1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
5217
5218
5219
5220
5221
5222
5223
5224
5225
5226
5227
5228
5229
5230
5231
5232
5233
5234
5235
5236
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254
5255
5256
5257
5258
5259
5260
5261
5262
5263
5264
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274
5275
5276
5277
5278
5279
5280
5281
5282
5283
5284
5285
5286
5287
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301
5302
5303
5304
5305
5306
5307
5308
5309
5310
5311
5312
5313
5314
5315
5316
5317
5318
5319
5320
5321
5322
5323
5324
5325
5326
5327
5328
5329
5330
5331
5332
5333
5334
5335
5336
5337
5338
5339
5340
5341
5342
5343
5344
5345
5346
5347
5348
5349
5350
5351
5352
5353
5354
5355
5356
5357
5358
5359
5360
5361
5362
5363
5364
5365
5366
5367
5368
5369
5370
5371
5372
5373
5374
5375
5376
5377
5378
5379
5380
5381
5382
5383
5384
5385
5386
5387
5388
5389
5390
5391
5392
5393
5394
5395
5396
5397
5398
5399
5400
5401
5402
5403
5404
5405
5406
5407
5408
5409
5410
5411
5412
5413
5414
5415
5416
5417
5418
5419
5420
5421
5422
5423
5424
5425
5426
5427
5428
5429
5430
5431
5432
5433
5434
5435
5436
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
5477
5478
5479
5480
5481
5482
5483
5484
5485
5486
5487
5488
5489
5490
5491
5492
5493
5494
5495
5496
5497
5498
5499
5500
5501
5502
5503
5504
5505
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
5516
5517
5518
5519
5520
5521
5522
5523
5524
5525
5526
5527
5528
5529
5530
5531
5532
5533
5534
5535
5536
5537
5538
5539
5540
5541
5542
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
5557
5558
5559
5560
5561
5562
5563
5564
5565
5566
5567
5568
5569
5570
5571
5572
5573
5574
5575
5576
5577
5578
5579
5580
5581
5582
5583
5584
5585
5586
5587
5588
5589
5590
5591
5592
5593
5594
5595
5596
5597
5598
5599
5600
5601
5602
5603
5604
5605
5606
5607
5608
5609
5610
5611
5612
5613
5614
5615
5616
5617
5618
5619
5620
5621
5622
5623
5624
5625
5626
5627
5628
5629
5630
5631
5632
5633
5634
5635
5636
5637
5638
5639
5640
5641
5642
5643
5644
5645
5646
5647
5648
5649
5650
5651
5652
5653
5654
5655
5656
5657
5658
5659
5660
5661
5662
5663
5664
5665
5666
5667
5668
5669
5670
5671
5672
5673
5674
5675
5676
5677
5678
5679
5680
5681
5682
5683
5684
5685
5686
5687
5688
5689
5690
5691
5692
5693
5694
5695
5696
5697
5698
5699
5700
5701
5702
5703
5704
5705
5706
5707
5708
5709
5710
5711
5712
5713
5714
5715
5716
5717
5718
5719
5720
5721
5722
5723
5724
5725
5726
5727
5728
5729
5730
5731
5732
5733
5734
5735
5736
5737
5738
5739
5740
5741
5742
5743
5744
5745
5746
5747
5748
5749
5750
5751
5752
5753
5754
5755
5756
5757
5758
5759
5760
5761
5762
5763
5764
5765
5766
5767
5768
5769
5770
5771
5772
5773
5774
5775
5776
5777
5778
5779
5780
5781
5782
5783
5784
5785
5786
5787
5788
5789
5790
5791
5792
5793
5794
5795
5796
5797
5798
5799
5800
5801
5802
5803
5804
5805
5806
5807
5808
5809
5810
5811
5812
5813
5814
5815
5816
5817
5818
5819
5820
5821
5822
5823
5824
5825
5826
5827
5828
5829
5830
5831
5832
5833
5834
5835
5836
5837
5838
5839
5840
5841
5842
5843
5844
5845
5846
5847
5848
5849
5850
5851
5852
5853
5854
5855
5856
5857
5858
5859
5860
5861
5862
5863
5864
5865
5866
5867
5868
5869
5870
5871
5872
5873
5874
5875
5876
5877
5878
5879
5880
5881
5882
5883
5884
5885
5886
5887
5888
5889
5890
5891
5892
5893
5894
5895
5896
5897
5898
5899
5900
5901
5902
5903
5904
5905
5906
5907
5908
5909
5910
5911
5912
5913
5914
5915
5916
5917
5918
5919
5920
5921
5922
5923
5924
5925
5926
5927
5928
5929
5930
5931
5932
5933
5934
5935
5936
5937
5938
5939
5940
5941
5942
5943
5944
5945
5946
5947
5948
5949
5950
5951
5952
5953
5954
5955
5956
5957
5958
5959
5960
5961
5962
5963
5964
5965
5966
5967
5968
5969
5970
5971
5972
5973
5974
5975
5976
5977
5978
5979
5980
5981
5982
5983
5984
5985
5986
5987
5988
5989
5990
5991
5992
5993
5994
5995
5996
5997
5998
5999
6000
6001
6002
6003
6004
6005
6006
6007
6008
6009
6010
6011
6012
6013
6014
6015
6016
6017
6018
6019
6020
6021
6022
6023
6024
6025
6026
6027
6028
6029
6030
6031
6032
6033
6034
6035
6036
6037
6038
6039
6040
6041
6042
6043
6044
6045
6046
6047
6048
6049
6050
6051
6052
6053
6054
6055
6056
6057
6058
6059
6060
6061
6062
6063
6064
6065
6066
6067
6068
6069
6070
6071
6072
6073
6074
6075
6076
6077
6078
6079
6080
6081
6082
6083
6084
6085
6086
6087
6088
6089
6090
6091
6092
6093
6094
6095
6096
6097
6098
6099
6100
6101
6102
6103
6104
6105
6106
6107
6108
6109
6110
6111
6112
6113
6114
6115
6116
6117
6118
6119
6120
6121
6122
6123
6124
6125
6126
6127
6128
6129
6130
6131
6132
6133
6134
6135
6136
6137
6138
6139
6140
6141
6142
6143
6144
6145
6146
6147
6148
6149
6150
6151
6152
6153
6154
6155
6156
6157
6158
6159
6160
6161
6162
6163
6164
6165
6166
6167
6168
6169
6170
6171
6172
6173
6174
6175
6176
6177
6178
6179
6180
6181
6182
6183
6184
6185
6186
6187
6188
6189
6190
6191
6192
6193
6194
6195
6196
6197
6198
6199
6200
6201
6202
6203
6204
6205
6206
6207
6208
6209
6210
6211
6212
6213
6214
6215
6216
6217
6218
6219
6220
6221
6222
6223
6224
6225
6226
6227
6228
6229
6230
6231
6232
6233
6234
6235
6236
6237
6238
6239
6240
6241
6242
6243
6244
6245
6246
6247
6248
6249
6250
6251
6252
6253
6254
6255
6256
6257
6258
6259
6260
6261
6262
6263
6264
6265
6266
6267
6268
6269
6270
6271
6272
6273
6274
6275
6276
6277
6278
6279
6280
6281
6282
6283
6284
6285
6286
6287
6288
6289
6290
6291
6292
6293
6294
6295
6296
6297
6298
6299
6300
6301
6302
6303
6304
6305
6306
6307
6308
6309
6310
6311
6312
6313
6314
6315
6316
6317
6318
6319
6320
6321
6322
6323
6324
6325
6326
6327
6328
6329
6330
6331
6332
6333
6334
6335
6336
6337
6338
6339
6340
6341
6342
6343
6344
6345
6346
6347
6348
6349
6350
6351
6352
6353
6354
6355
6356
6357
6358
6359
6360
6361
6362
6363
6364
6365
6366
6367
6368
6369
6370
6371
6372
6373
6374
6375
6376
6377
6378
6379
6380
6381
6382
6383
6384
6385
6386
6387
6388
6389
6390
6391
6392
6393
6394
6395
6396
6397
6398
6399
6400
6401
6402
6403
6404
6405
6406
6407
6408
6409
6410
6411
6412
6413
6414
6415
6416
6417
6418
6419
6420
6421
6422
6423
6424
6425
6426
6427
6428
6429
6430
6431
6432
6433
6434
6435
6436
6437
6438
6439
6440
6441
6442
6443
6444
6445
6446
6447
6448
6449
6450
6451
6452
6453
6454
6455
6456
6457
6458
6459
6460
6461
6462
6463
6464
6465
6466
6467
6468
6469
6470
6471
6472
6473
6474
6475
6476
6477
6478
6479
6480
6481
6482
6483
6484
6485
6486
6487
6488
6489
6490
6491
6492
6493
6494
6495
6496
6497
6498
6499
6500
6501
6502
6503
6504
6505
6506
6507
6508
6509
6510
6511
6512
6513
6514
6515
6516
6517
6518
6519
6520
6521
6522
6523
6524
6525
6526
6527
6528
6529
6530
6531
6532
6533
6534
6535
6536
6537
6538
6539
6540
6541
6542
6543
6544
6545
6546
6547
6548
6549
6550
6551
6552
6553
6554
6555
6556
6557
6558
6559
6560
6561
6562
6563
6564
6565
6566
6567
6568
6569
6570
6571
6572
6573
6574
6575
6576
6577
6578
6579
6580
6581
6582
6583
6584
6585
6586
6587
6588
6589
6590
6591
6592
6593
6594
6595
6596
6597
6598
6599
6600
6601
6602
6603
6604
6605
6606
6607
6608
6609
6610
6611
6612
6613
6614
6615
6616
6617
6618
6619
6620
6621
6622
6623
6624
6625
6626
6627
6628
6629
6630
6631
6632
6633
6634
6635
6636
6637
6638
6639
6640
6641
6642
6643
6644
6645
6646
6647
6648
6649
6650
6651
6652
6653
6654
6655
6656
6657
6658
6659
6660
6661
6662
6663
6664
6665
6666
6667
6668
6669
6670
6671
6672
6673
6674
6675
6676
6677
6678
6679
6680
6681
6682
6683
6684
6685
6686
6687
6688
6689
6690
6691
6692
6693
6694
6695
6696
6697
6698
6699
6700
6701
6702
6703
6704
6705
6706
6707
6708
6709
6710
6711
6712
6713
6714
6715
6716
6717
6718
6719
6720
6721
6722
6723
6724
6725
6726
6727
6728
6729
6730
6731
6732
6733
6734
6735
6736
6737
6738
6739
6740
6741
6742
6743
6744
6745
6746
6747
6748
6749
6750
6751
6752
6753
6754
6755
6756
6757
6758
6759
6760
6761
6762
6763
6764
6765
6766
6767
6768
6769
6770
6771
6772
6773
6774
6775
6776
6777
6778
6779
6780
6781
6782
6783
6784
6785
6786
6787
6788
6789
6790
6791
6792
6793
6794
6795
6796
6797
6798
6799
6800
6801
6802
6803
6804
6805
6806
6807
6808
6809
6810
6811
6812
6813
6814
6815
6816
6817
6818
6819
6820
6821
6822
6823
6824
6825
6826
6827
6828
6829
6830
6831
6832
6833
6834
6835
6836
6837
6838
6839
6840
6841
6842
6843
6844
6845
6846
6847
6848
6849
6850
6851
6852
6853
6854
6855
6856
6857
6858
6859
6860
6861
6862
6863
6864
6865
6866
6867
6868
6869
6870
6871
6872
6873
6874
6875
6876
6877
6878
6879
6880
6881
6882
6883
6884
6885
6886
6887
6888
6889
6890
6891
6892
6893
6894
6895
6896
6897
6898
6899
6900
6901
6902
6903
6904
6905
6906
6907
6908
6909
6910
6911
6912
6913
6914
6915
6916
6917
6918
6919
6920
6921
6922
6923
6924
6925
6926
6927
6928
6929
6930
6931
6932
6933
6934
6935
6936
6937
6938
6939
6940
6941
6942
6943
6944
6945
6946
6947
6948
6949
6950
6951
6952
6953
6954
6955
6956
6957
6958
6959
6960
6961
6962
6963
6964
6965
6966
6967
6968
6969
6970
6971
6972
6973
6974
6975
6976
6977
6978
6979
6980
6981
6982
6983
6984
6985
6986
6987
6988
6989
6990
6991
6992
6993
6994
6995
6996
6997
6998
6999
7000
7001
7002
7003
7004
7005
7006
7007
7008
7009
7010
7011
7012
7013
7014
7015
7016
7017
7018
7019
7020
7021
7022
7023
7024
7025
7026
7027
7028
7029
7030
7031
7032
7033
7034
7035
7036
7037
7038
7039
7040
7041
7042
7043
7044
7045
7046
7047
7048
7049
7050
7051
7052
7053
7054
7055
7056
7057
7058
7059
7060
7061
7062
7063
7064
7065
7066
7067
7068
7069
7070
7071
7072
7073
7074
7075
7076
7077
7078
7079
7080
7081
7082
7083
7084
7085
7086
7087
7088
7089
7090
7091
7092
7093
7094
7095
7096
7097
7098
7099
7100
7101
7102
7103
7104
7105
7106
7107
7108
7109
7110
7111
7112
7113
7114
7115
7116
7117
7118
7119
7120
7121
7122
7123
7124
7125
7126
7127
7128
7129
7130
7131
7132
7133
7134
7135
7136
7137
7138
7139
7140
7141
7142
7143
7144
7145
7146
7147
7148
7149
7150
7151
7152
7153
7154
7155
7156
7157
7158
7159
7160
7161
7162
7163
7164
7165
7166
7167
7168
7169
7170
7171
7172
7173
7174
7175
7176
7177
7178
7179
7180
7181
7182
7183
7184
7185
7186
7187
7188
7189
7190
7191
7192
7193
7194
7195
7196
7197
7198
7199
7200
7201
7202
7203
7204
7205
7206
7207
7208
7209
7210
7211
7212
7213
7214
7215
7216
7217
7218
7219
7220
7221
7222
7223
7224
7225
7226
7227
7228
7229
7230
7231
7232
7233
7234
7235
7236
7237
7238
7239
7240
7241
7242
7243
7244
7245
7246
7247
7248
7249
7250
7251
7252
7253
7254
7255
7256
7257
7258
7259
7260
7261
7262
7263
7264
7265
7266
7267
7268
7269
7270
7271
7272
7273
7274
7275
7276
7277
7278
7279
7280
7281
7282
7283
7284
7285
7286
7287
7288
7289
7290
7291
7292
7293
7294
7295
7296
7297
7298
7299
7300
7301
7302
7303
7304
7305
7306
7307
7308
7309
7310
7311
7312
7313
7314
7315
7316
7317
7318
7319
7320
7321
7322
7323
7324
7325
7326
7327
7328
7329
7330
7331
7332
7333
7334
7335
7336
7337
7338
7339
7340
7341
7342
7343
7344
7345
7346
7347
7348
7349
7350
7351
7352
7353
7354
7355
7356
7357
7358
7359
7360
7361
7362
7363
7364
7365
7366
7367
7368
7369
7370
7371
7372
7373
7374
7375
7376
7377
7378
7379
7380
7381
7382
7383
7384
7385
7386
7387
7388
7389
7390
7391
7392
7393
7394
7395
7396
7397
7398
7399
7400
7401
7402
7403
7404
7405
7406
7407
7408
7409
7410
7411
7412
7413
7414
7415
7416
7417
7418
7419
7420
7421
7422
7423
7424
7425
7426
7427
7428
7429
7430
7431
7432
7433
7434
7435
7436
7437
7438
7439
7440
7441
7442
7443
7444
7445
7446
7447
7448
7449
7450
7451
7452
7453
7454
7455
7456
7457
7458
7459
7460
7461
7462
7463
7464
7465
7466
7467
7468
7469
7470
7471
7472
7473
7474
7475
7476
7477
7478
7479
7480
7481
7482
7483
7484
7485
7486
7487
7488
7489
7490
7491
7492
7493
7494
7495
7496
7497
7498
7499
7500
7501
7502
7503
7504
7505
7506
7507
7508
7509
7510
7511
7512
7513
7514
7515
7516
7517
7518
7519
7520
7521
7522
7523
7524
7525
7526
7527
7528
7529
7530
7531
7532
7533
7534
7535
7536
7537
7538
7539
7540
7541
7542
7543
7544
7545
7546
7547
7548
7549
7550
7551
7552
7553
7554
7555
7556
7557
7558
7559
7560
7561
7562
7563
7564
7565
7566
7567
7568
7569
7570
7571
7572
7573
7574
7575
7576
7577
7578
7579
7580
7581
7582
7583
7584
7585
7586
7587
7588
7589
7590
7591
7592
7593
7594
7595
7596
7597
7598
7599
7600
7601
7602
7603
7604
7605
7606
7607
7608
7609
7610
7611
7612
7613
7614
7615
7616
7617
7618
7619
7620
7621
7622
7623
7624
7625
7626
7627
7628
7629
7630
7631
7632
7633
7634
7635
7636
7637
7638
7639
7640
7641
7642
7643
7644
7645
7646
7647
7648
7649
7650
7651
7652
7653
7654
7655
7656
7657
7658
7659
7660
7661
7662
7663
7664
7665
7666
7667
7668
7669
7670
7671
7672
7673
7674
7675
7676
7677
7678
7679
7680
7681
7682
7683
7684
7685
7686
7687
7688
7689
7690
7691
7692
7693
7694
7695
7696
7697
7698
7699
7700
7701
7702
7703
7704
7705
7706
7707
7708
7709
7710
7711
7712
7713
7714
7715
7716
7717
7718
7719
7720
7721
7722
7723
7724
7725
7726
7727
7728
7729
7730
7731
7732
7733
7734
7735
7736
7737
7738
7739
7740
7741
7742
7743
7744
7745
7746
7747
7748
7749
7750
7751
7752
7753
7754
7755
7756
7757
7758
7759
7760
7761
7762
7763
7764
7765
7766
7767
7768
7769
7770
7771
7772
7773
7774
7775
7776
7777
7778
7779
7780
7781
7782
7783
7784
7785
7786
7787
7788
7789
7790
7791
7792
7793
7794
7795
7796
7797
7798
7799
7800
7801
7802
7803
7804
7805
7806
7807
7808
7809
7810
7811
7812
7813
7814
7815
7816
7817
7818
7819
7820
7821
7822
7823
7824
7825
7826
7827
7828
7829
7830
7831
7832
7833
7834
7835
7836
7837
7838
7839
7840
7841
7842
7843
7844
7845
7846
7847
7848
7849
7850
7851
7852
7853
7854
7855
7856
7857
7858
7859
7860
7861
7862
7863
7864
7865
7866
7867
7868
7869
7870
7871
7872
7873
7874
7875
7876
7877
7878
7879
7880
7881
7882
7883
7884
7885
7886
7887
7888
7889
7890
7891
7892
7893
7894
7895
7896
7897
7898
7899
7900
7901
7902
7903
7904
7905
7906
7907
7908
7909
7910
7911
7912
7913
7914
7915
7916
7917
7918
7919
7920
7921
7922
7923
7924
7925
7926
7927
7928
7929
7930
7931
7932
7933
7934
7935
7936
7937
7938
7939
7940
7941
7942
7943
7944
7945
7946
7947
7948
7949
7950
7951
7952
7953
7954
7955
7956
7957
7958
7959
7960
7961
7962
7963
7964
7965
7966
7967
7968
7969
7970
7971
7972
7973
7974
7975
7976
7977
7978
7979
7980
7981
7982
7983
7984
7985
7986
7987
7988
7989
7990
7991
7992
7993
7994
7995
7996
7997
7998
7999
8000
8001
8002
8003
8004
8005
8006
8007
8008
8009
8010
8011
8012
8013
8014
8015
8016
8017
8018
8019
8020
8021
8022
8023
8024
8025
8026
8027
8028
8029
8030
8031
8032
8033
8034
8035
8036
8037
8038
8039
8040
8041
8042
8043
8044
8045
8046
8047
8048
8049
8050
8051
8052
8053
8054
8055
8056
8057
8058
8059
8060
8061
8062
8063
8064
8065
8066
8067
8068
8069
8070
8071
8072
8073
8074
8075
8076
8077
8078
8079
8080
8081
8082
8083
8084
8085
8086
8087
8088
8089
8090
8091
8092
8093
8094
8095
8096
8097
8098
8099
8100
8101
8102
8103
8104
8105
8106
8107
8108
8109
8110
8111
8112
8113
8114
8115
8116
8117
8118
8119
8120
8121
8122
8123
8124
8125
8126
8127
8128
8129
8130
8131
8132
8133
8134
8135
8136
8137
8138
8139
8140
8141
8142
8143
8144
8145
8146
8147
8148
8149
8150
8151
8152
8153
8154
8155
8156
8157
8158
8159
8160
8161
8162
8163
8164
8165
8166
8167
8168
8169
8170
8171
8172
8173
8174
8175
8176
8177
8178
8179
8180
8181
8182
8183
8184
8185
8186
8187
8188
8189
8190
8191
8192
8193
8194
8195
8196
8197
8198
8199
8200
8201
8202
8203
8204
8205
8206
8207
8208
8209
8210
8211
8212
8213
8214
8215
8216
8217
8218
8219
8220
8221
8222
8223
8224
8225
8226
8227
8228
8229
8230
8231
8232
8233
8234
8235
8236
8237
8238
8239
8240
8241
8242
8243
8244
8245
8246
8247
8248
8249
8250
8251
8252
8253
8254
8255
8256
8257
8258
8259
8260
8261
8262
8263
8264
8265
8266
8267
8268
8269
8270
8271
8272
8273
8274
8275
8276
8277
8278
8279
8280
8281
8282
8283
8284
8285
8286
8287
8288
8289
8290
8291
8292
8293
8294
8295
8296
8297
8298
8299
8300
8301
8302
8303
8304
8305
8306
8307
8308
8309
8310
8311
8312
8313
8314
8315
8316
8317
8318
8319
8320
8321
8322
8323
8324
8325
8326
8327
8328
8329
8330
8331
8332
8333
8334
8335
8336
8337
8338
8339
8340
8341
8342
8343
8344
8345
8346
8347
8348
8349
8350
8351
8352
8353
8354
8355
8356
8357
8358
8359
8360
8361
8362
8363
8364
8365
8366
8367
8368
8369
8370
8371
8372
8373
8374
8375
8376
8377
8378
8379
8380
8381
8382
8383
8384
8385
8386
8387
8388
8389
8390
8391
8392
8393
8394
8395
8396
8397
8398
8399
8400
8401
8402
8403
8404
8405
8406
8407
8408
8409
8410
8411
8412
8413
8414
8415
8416
8417
8418
8419
8420
8421
8422
8423
8424
8425
8426
8427
8428
8429
8430
8431
8432
8433
8434
8435
8436
8437
8438
8439
8440
8441
8442
8443
8444
8445
8446
8447
8448
8449
8450
8451
8452
8453
8454
8455
8456
8457
8458
8459
8460
8461
8462
8463
8464
8465
8466
8467
8468
8469
8470
8471
8472
8473
8474
8475
8476
8477
8478
8479
8480
8481
8482
8483
8484
8485
8486
8487
8488
8489
8490
8491
8492
8493
8494
8495
8496
8497
8498
8499
8500
8501
8502
8503
8504
8505
8506
8507
8508
8509
8510
8511
8512
8513
8514
8515
8516
8517
8518
8519
8520
8521
8522
8523
8524
8525
8526
8527
8528
8529
8530
8531
8532
8533
8534
8535
8536
8537
8538
8539
8540
8541
8542
8543
8544
8545
8546
8547
8548
8549
8550
8551
8552
8553
8554
8555
8556
8557
8558
8559
8560
8561
8562
8563
8564
8565
8566
8567
8568
8569
8570
8571
8572
8573
8574
8575
8576
8577
8578
8579
8580
8581
8582
8583
8584
8585
8586
8587
8588
8589
8590
8591
8592
8593
8594
8595
8596
8597
8598
8599
8600
8601
8602
8603
8604
8605
8606
8607
8608
8609
8610
8611
8612
8613
8614
8615
8616
8617
8618
8619
8620
8621
8622
8623
8624
8625
8626
8627
8628
8629
8630
8631
8632
8633
8634
8635
8636
8637
8638
8639
8640
8641
8642
8643
8644
8645
8646
8647
8648
8649
8650
8651
8652
8653
8654
8655
8656
8657
8658
8659
8660
8661
8662
8663
8664
8665
8666
8667
8668
8669
8670
8671
8672
8673
8674
8675
8676
8677
8678
8679
8680
8681
8682
8683
8684
8685
8686
8687
8688
8689
8690
8691
8692
8693
8694
8695
8696
8697
8698
8699
8700
8701
8702
8703
8704
8705
8706
8707
8708
8709
8710
8711
8712
8713
8714
8715
8716
8717
8718
8719
8720
8721
8722
8723
8724
8725
8726
8727
8728
8729
8730
8731
8732
8733
8734
8735
8736
8737
8738
8739
8740
8741
8742
8743
8744
8745
8746
8747
8748
8749
8750
8751
8752
8753
8754
8755
8756
8757
8758
8759
8760
8761
8762
8763
8764
8765
8766
8767
8768
8769
8770
8771
8772
8773
8774
8775
8776
8777
8778
8779
8780
8781
8782
8783
8784
8785
8786
8787
8788
8789
8790
8791
8792
8793
8794
8795
8796
8797
8798
8799
8800
8801
8802
8803
8804
8805
8806
8807
8808
8809
8810
8811
8812
8813
8814
8815
8816
8817
8818
8819
8820
8821
8822
8823
8824
8825
8826
8827
8828
8829
8830
8831
8832
8833
8834
8835
8836
8837
8838
8839
8840
8841
8842
8843
8844
8845
8846
8847
8848
8849
8850
8851
8852
8853
8854
8855
8856
8857
8858
8859
8860
8861
8862
8863
8864
8865
8866
8867
8868
8869
8870
8871
8872
8873
8874
8875
8876
8877
8878
8879
8880
8881
8882
8883
8884
8885
8886
8887
8888
8889
8890
8891
8892
8893
8894
8895
8896
8897
8898
8899
8900
8901
8902
8903
8904
8905
8906
8907
8908
8909
8910
8911
8912
8913
8914
8915
8916
8917
8918
8919
8920
8921
8922
8923
8924
8925
8926
8927
8928
8929
8930
8931
8932
8933
8934
8935
8936
8937
8938
8939
8940
8941
8942
8943
8944
8945
8946
8947
8948
8949
8950
8951
8952
8953
8954
8955
8956
8957
8958
8959
8960
8961
8962
8963
8964
8965
8966
8967
8968
8969
8970
8971
8972
8973
8974
8975
8976
8977
8978
8979
8980
8981
8982
8983
8984
8985
8986
8987
8988
8989
8990
8991
8992
8993
8994
8995
8996
8997
8998
8999
9000
9001
9002
9003
9004
9005
9006
9007
9008
9009
9010
9011
9012
9013
9014
9015
9016
9017
9018
9019
9020
9021
9022
9023
9024
9025
9026
9027
9028
9029
9030
9031
9032
9033
9034
9035
9036
9037
9038
9039
9040
9041
9042
9043
9044
9045
9046
9047
9048
9049
9050
9051
9052
9053
9054
9055
9056
9057
9058
9059
9060
9061
9062
9063
9064
9065
9066
9067
9068
9069
9070
9071
9072
9073
9074
9075
9076
9077
9078
9079
9080
9081
9082
9083
9084
9085
9086
9087
9088
9089
9090
9091
9092
9093
9094
9095
9096
9097
9098
9099
9100
9101
9102
9103
9104
9105
9106
9107
9108
9109
9110
9111
9112
9113
9114
9115
9116
9117
9118
9119
9120
9121
9122
9123
9124
9125
9126
9127
9128
9129
9130
9131
9132
9133
9134
9135
9136
9137
9138
9139
9140
9141
9142
9143
9144
9145
9146
9147
9148
9149
9150
9151
9152
9153
9154
9155
9156
9157
9158
9159
9160
9161
9162
9163
9164
9165
9166
9167
9168
9169
9170
9171
9172
9173
9174
9175
9176
9177
9178
9179
9180
9181
9182
9183
9184
9185
9186
9187
9188
9189
9190
9191
9192
9193
9194
9195
9196
9197
9198
9199
9200
9201
9202
9203
9204
9205
9206
9207
9208
9209
9210
9211
9212
9213
9214
9215
9216
9217
9218
9219
9220
9221
9222
9223
9224
9225
9226
9227
9228
9229
9230
9231
9232
9233
9234
9235
9236
9237
9238
9239
9240
9241
9242
9243
9244
9245
9246
9247
9248
9249
9250
9251
9252
9253
9254
9255
9256
9257
9258
9259
9260
9261
9262
9263
9264
9265
9266
9267
9268
9269
9270
9271
9272
9273
9274
9275
9276
9277
9278
9279
9280
9281
9282
9283
9284
9285
9286
9287
9288
9289
9290
9291
9292
9293
9294
9295
9296
9297
9298
9299
9300
9301
9302
9303
9304
9305
9306
9307
9308
9309
9310
9311
9312
9313
9314
9315
9316
9317
9318
9319
9320
9321
9322
9323
9324
9325
9326
9327
9328
9329
9330
9331
9332
9333
9334
9335
9336
9337
9338
9339
9340
9341
9342
9343
9344
9345
9346
9347
9348
9349
9350
9351
9352
9353
9354
9355
9356
9357
9358
9359
9360
9361
9362
9363
9364
9365
9366
9367
9368
9369
9370
9371
9372
9373
9374
9375
9376
9377
9378
9379
9380
9381
9382
9383
9384
9385
9386
9387
9388
9389
9390
9391
9392
9393
9394
9395
9396
9397
9398
9399
9400
9401
9402
9403
9404
9405
9406
9407
9408
9409
9410
9411
9412
9413
9414
9415
9416
9417
9418
9419
9420
9421
9422
9423
9424
9425
9426
9427
9428
9429
9430
9431
9432
9433
9434
9435
9436
9437
9438
9439
9440
9441
9442
9443
9444
9445
9446
9447
9448
9449
9450
9451
9452
9453
9454
9455
9456
9457
9458
9459
9460
9461
9462
9463
9464
9465
9466
9467
9468
9469
9470
9471
9472
9473
9474
9475
9476
9477
9478
9479
9480
9481
9482
9483
9484
9485
9486
9487
9488
9489
9490
9491
9492
9493
9494
9495
9496
9497
9498
9499
9500
9501
9502
9503
9504
9505
9506
9507
9508
9509
9510
9511
9512
9513
9514
9515
9516
9517
9518
9519
9520
9521
9522
9523
9524
9525
9526
9527
9528
9529
9530
9531
9532
9533
9534
9535
9536
9537
9538
9539
9540
9541
9542
9543
9544
9545
9546
9547
9548
9549
9550
9551
9552
9553
9554
9555
9556
9557
9558
9559
9560
9561
9562
9563
9564
9565
9566
9567
9568
9569
9570
9571
9572
9573
9574
9575
9576
9577
9578
9579
9580
9581
9582
9583
9584
9585
9586
9587
9588
9589
9590
9591
9592
9593
9594
9595
9596
9597
9598
9599
9600
9601
9602
9603
9604
9605
9606
9607
9608
9609
9610
9611
9612
9613
9614
9615
9616
9617
9618
9619
9620
9621
9622
9623
9624
9625
9626
9627
9628
9629
9630
9631
9632
9633
9634
9635
9636
9637
9638
9639
9640
9641
9642
9643
9644
9645
9646
9647
9648
9649
9650
9651
9652
9653
9654
9655
9656
9657
9658
9659
9660
9661
9662
9663
9664
9665
9666
9667
9668
9669
9670
9671
9672
9673
9674
9675
9676
9677
9678
9679
9680
9681
9682
9683
9684
9685
9686
9687
9688
9689
9690
9691
9692
9693
9694
9695
9696
9697
9698
9699
9700
9701
9702
9703
9704
9705
9706
9707
9708
9709
9710
9711
9712
9713
9714
9715
9716
9717
9718
9719
9720
9721
9722
9723
9724
9725
9726
9727
9728
9729
9730
9731
9732
9733
9734
9735
9736
9737
9738
9739
9740
9741
9742
9743
9744
9745
9746
9747
9748
9749
9750
9751
9752
9753
9754
9755
9756
9757
9758
9759
9760
9761
9762
9763
9764
9765
9766
9767
9768
9769
9770
9771
9772
9773
9774
9775
9776
9777
9778
9779
9780
9781
9782
9783
9784
9785
9786
9787
9788
9789
9790
9791
9792
9793
9794
9795
9796
9797
9798
9799
9800
9801
9802
9803
9804
9805
9806
9807
9808
9809
9810
9811
9812
9813
9814
9815
9816
9817
9818
9819
9820
9821
9822
9823
9824
9825
9826
9827
9828
9829
9830
9831
9832
9833
9834
9835
9836
9837
9838
9839
9840
9841
9842
9843
9844
9845
9846
9847
9848
9849
9850
9851
9852
9853
9854
9855
9856
9857
9858
9859
9860
9861
9862
9863
9864
9865
9866
9867
9868
9869
9870
9871
9872
9873
9874
9875
9876
9877
9878
9879
9880
9881
9882
9883
9884
9885
9886
9887
9888
9889
9890
9891
9892
9893
9894
9895
9896
9897
9898
9899
9900
9901
9902
9903
9904
9905
9906
9907
9908
9909
9910
9911
9912
9913
9914
9915
9916
9917
9918
9919
9920
9921
9922
9923
9924
9925
9926
9927
9928
9929
9930
9931
9932
9933
9934
9935
9936
9937
9938
9939
9940
9941
9942
9943
9944
9945
9946
9947
9948
9949
9950
9951
9952
9953
9954
9955
9956
9957
9958
9959
9960
9961
9962
9963
9964
9965
9966
9967
9968
9969
9970
9971
9972
9973
9974
9975
9976
9977
9978
9979
9980
9981
9982
9983
9984
9985
9986
9987
9988
9989
9990
9991
9992
9993
9994
9995
9996
9997
9998
9999
10000
10001
10002
10003
10004
10005
10006
10007
10008
10009
10010
10011
10012
10013
10014
10015
10016
10017
10018
10019
10020
10021
10022
10023
10024
10025
10026
10027
10028
10029
10030
10031
10032
10033
10034
10035
10036
10037
10038
10039
10040
10041
10042
10043
10044
10045
10046
10047
10048
10049
10050
10051
10052
10053
10054
10055
10056
10057
10058
10059
10060
10061
10062
10063
10064
10065
10066
10067
10068
10069
10070
10071
10072
10073
10074
10075
10076
10077
10078
10079
10080
10081
10082
10083
10084
10085
10086
10087
10088
10089
10090
10091
10092
10093
10094
10095
10096
10097
10098
10099
10100
10101
10102
10103
10104
10105
10106
10107
10108
10109
10110
10111
10112
10113
10114
10115
10116
10117
10118
10119
10120
10121
10122
10123
10124
10125
10126
10127
10128
10129
10130
10131
10132
10133
10134
10135
10136
10137
10138
10139
10140
10141
10142
10143
10144
10145
10146
10147
10148
10149
10150
10151
10152
10153
10154
10155
10156
10157
10158
10159
10160
10161
10162
10163
10164
10165
10166
10167
10168
10169
10170
10171
10172
10173
10174
10175
10176
10177
10178
10179
10180
10181
10182
10183
10184
10185
10186
10187
10188
10189
10190
10191
10192
10193
10194
10195
10196
10197
10198
10199
10200
10201
10202
10203
10204
10205
10206
10207
10208
10209
10210
10211
10212
10213
10214
10215
10216
10217
10218
10219
10220
10221
10222
10223
10224
10225
10226
10227
10228
10229
10230
10231
10232
10233
10234
10235
10236
10237
10238
10239
10240
10241
10242
10243
10244
10245
10246
10247
10248
10249
10250
10251
10252
10253
10254
10255
10256
10257
10258
10259
10260
10261
10262
10263
10264
10265
10266
10267
10268
10269
10270
10271
10272
10273
10274
10275
10276
10277
10278
10279
10280
10281
10282
10283
10284
10285
10286
10287
10288
10289
10290
10291
10292
10293
10294
10295
10296
10297
10298
10299
10300
10301
10302
10303
10304
10305
10306
10307
10308
10309
10310
10311
10312
10313
10314
10315
10316
10317
10318
10319
10320
10321
10322
10323
10324
10325
10326
10327
10328
10329
10330
10331
10332
10333
10334
10335
10336
10337
10338
10339
10340
10341
10342
10343
10344
10345
10346
10347
10348
10349
10350
10351
10352
10353
10354
10355
10356
10357
10358
10359
10360
10361
10362
10363
10364
10365
10366
10367
10368
10369
10370
10371
10372
10373
10374
10375
10376
10377
10378
10379
10380
10381
10382
10383
10384
10385
10386
10387
10388
10389
10390
10391
10392
10393
10394
10395
10396
10397
10398
10399
10400
10401
10402
10403
10404
10405
10406
10407
10408
10409
10410
10411
10412
10413
10414
10415
10416
10417
10418
10419
10420
10421
10422
10423
10424
10425
10426
10427
10428
10429
10430
10431
10432
10433
10434
10435
10436
10437
10438
10439
10440
10441
10442
10443
10444
10445
10446
10447
10448
10449
10450
10451
10452
10453
10454
10455
10456
10457
10458
10459
10460
10461
10462
10463
10464
10465
10466
10467
10468
10469
10470
10471
10472
10473
10474
10475
10476
10477
10478
10479
10480
10481
10482
10483
10484
10485
10486
10487
10488
10489
10490
10491
10492
10493
10494
10495
10496
10497
10498
10499
10500
10501
10502
10503
10504
10505
10506
10507
10508
10509
10510
10511
10512
10513
10514
10515
10516
10517
10518
10519
10520
10521
10522
10523
10524
10525
10526
10527
10528
10529
10530
10531
10532
10533
10534
10535
10536
10537
10538
10539
10540
10541
10542
10543
10544
10545
10546
10547
10548
10549
10550
10551
10552
10553
10554
10555
10556
10557
10558
10559
10560
10561
10562
10563
10564
10565
10566
10567
10568
10569
10570
10571
10572
10573
10574
10575
10576
10577
10578
10579
10580
10581
10582
10583
10584
10585
10586
10587
10588
10589
10590
10591
10592
10593
10594
10595
10596
10597
10598
10599
10600
10601
10602
10603
10604
10605
10606
10607
10608
10609
10610
10611
10612
10613
10614
10615
10616
10617
10618
10619
10620
10621
10622
10623
10624
10625
10626
10627
10628
10629
10630
10631
10632
10633
10634
10635
10636
10637
10638
10639
10640
10641
10642
10643
10644
10645
10646
10647
10648
10649
10650
10651
10652
10653
10654
10655
10656
10657
10658
10659
10660
10661
10662
10663
10664
10665
10666
10667
10668
10669
10670
10671
10672
10673
10674
10675
10676
10677
10678
10679
10680
10681
10682
10683
10684
10685
10686
10687
10688
10689
10690
10691
10692
10693
10694
10695
10696
10697
10698
10699
10700
10701
10702
10703
10704
10705
10706
10707
10708
10709
10710
10711
10712
10713
10714
10715
10716
10717
10718
10719
10720
10721
10722
10723
10724
10725
10726
10727
10728
10729
10730
10731
10732
10733
10734
10735
10736
10737
10738
10739
10740
10741
10742
10743
10744
10745
10746
10747
10748
10749
10750
10751
10752
10753
10754
10755
10756
10757
10758
10759
10760
10761
10762
10763
10764
10765
10766
10767
10768
10769
10770
10771
10772
10773
10774
10775
10776
10777
10778
10779
10780
10781
10782
10783
10784
10785
10786
10787
10788
10789
10790
10791
10792
10793
10794
10795
10796
10797
10798
10799
10800
10801
10802
10803
10804
10805
10806
10807
10808
10809
10810
10811
10812
10813
10814
10815
10816
10817
10818
10819
10820
10821
10822
10823
10824
10825
10826
10827
10828
10829
10830
10831
10832
10833
10834
10835
10836
10837
10838
10839
10840
10841
10842
10843
10844
10845
10846
10847
10848
10849
10850
10851
10852
10853
10854
10855
10856
10857
10858
10859
10860
10861
10862
10863
10864
10865
10866
10867
10868
10869
10870
10871
10872
10873
10874
10875
10876
10877
10878
10879
10880
10881
10882
10883
10884
10885
10886
10887
10888
10889
10890
10891
10892
10893
10894
10895
10896
10897
10898
10899
10900
10901
10902
10903
10904
10905
10906
10907
10908
10909
10910
10911
10912
10913
10914
10915
10916
10917
10918
10919
10920
10921
10922
10923
10924
10925
10926
10927
10928
10929
10930
10931
10932
10933
10934
10935
10936
10937
10938
10939
10940
10941
10942
10943
10944
10945
10946
10947
10948
10949
10950
10951
10952
10953
10954
10955
10956
10957
10958
10959
10960
10961
10962
10963
10964
10965
10966
10967
10968
10969
10970
10971
10972
10973
10974
10975
10976
10977
10978
10979
10980
10981
10982
10983
10984
10985
10986
10987
10988
10989
10990
10991
10992
10993
10994
10995
10996
10997
10998
10999
11000
11001
11002
11003
11004
11005
11006
11007
11008
11009
11010
11011
11012
11013
11014
11015
11016
11017
11018
11019
11020
11021
11022
11023
11024
11025
11026
11027
11028
11029
11030
11031
11032
11033
11034
11035
11036
11037
11038
11039
11040
11041
11042
11043
11044
11045
11046
11047
11048
11049
11050
11051
11052
11053
11054
11055
11056
11057
11058
11059
11060
11061
11062
11063
11064
11065
11066
11067
11068
11069
11070
11071
11072
11073
11074
11075
11076
11077
11078
11079
11080
11081
11082
11083
11084
11085
11086
11087
11088
11089
11090
11091
11092
11093
11094
11095
11096
11097
11098
11099
11100
11101
11102
11103
11104
11105
11106
11107
11108
11109
11110
11111
11112
11113
11114
11115
11116
11117
11118
11119
11120
11121
11122
11123
11124
11125
11126
11127
11128
11129
11130
11131
11132
11133
11134
11135
11136
11137
11138
11139
11140
11141
11142
11143
11144
11145
11146
11147
11148
11149
11150
11151
11152
11153
11154
11155
11156
11157
11158
11159
11160
11161
11162
11163
11164
11165
11166
11167
11168
11169
11170
11171
11172
11173
11174
11175
11176
11177
11178
11179
11180
11181
11182
11183
11184
11185
11186
11187
11188
11189
11190
11191
11192
11193
11194
11195
11196
11197
11198
11199
11200
11201
11202
11203
11204
11205
11206
11207
11208
11209
11210
11211
11212
11213
11214
11215
11216
11217
11218
11219
11220
11221
11222
11223
11224
11225
11226
11227
11228
11229
11230
11231
11232
11233
11234
11235
11236
11237
11238
11239
11240
11241
11242
11243
11244
11245
11246
11247
11248
11249
11250
11251
11252
11253
11254
11255
11256
11257
11258
11259
11260
11261
11262
11263
11264
11265
11266
11267
11268
11269
11270
11271
11272
11273
11274
11275
11276
11277
11278
11279
11280
11281
11282
11283
11284
11285
11286
11287
11288
11289
11290
11291
11292
11293
11294
11295
11296
11297
11298
11299
11300
11301
11302
11303
11304
11305
11306
11307
11308
11309
11310
11311
11312
11313
11314
11315
11316
11317
11318
11319
11320
11321
11322
11323
11324
11325
11326
11327
11328
11329
11330
11331
11332
11333
11334
11335
11336
11337
11338
11339
11340
11341
11342
11343
11344
11345
11346
11347
11348
11349
11350
11351
11352
11353
11354
11355
11356
11357
11358
11359
11360
11361
11362
11363
11364
11365
11366
11367
11368
11369
11370
11371
11372
11373
11374
11375
11376
11377
11378
11379
11380
11381
11382
11383
11384
11385
11386
11387
11388
11389
11390
11391
11392
11393
11394
11395
11396
11397
11398
11399
11400
11401
11402
11403
11404
11405
11406
11407
11408
11409
11410
11411
11412
11413
11414
11415
11416
11417
11418
11419
11420
11421
11422
11423
11424
11425
11426
11427
11428
11429
11430
11431
11432
11433
11434
11435
11436
11437
11438
11439
11440
11441
11442
11443
11444
11445
11446
11447
11448
11449
11450
11451
11452
11453
11454
11455
11456
11457
11458
11459
11460
11461
11462
11463
11464
11465
11466
11467
11468
11469
11470
11471
11472
11473
11474
11475
11476
11477
11478
11479
11480
11481
11482
11483
11484
11485
11486
11487
11488
11489
11490
11491
11492
11493
11494
11495
11496
11497
11498
11499
11500
11501
11502
11503
11504
11505
11506
11507
11508
11509
11510
11511
11512
11513
11514
11515
11516
11517
11518
11519
11520
11521
11522
11523
11524
11525
11526
11527
11528
11529
11530
11531
11532
11533
11534
11535
11536
11537
11538
11539
11540
11541
11542
11543
11544
11545
11546
11547
11548
11549
11550
11551
11552
11553
11554
11555
11556
11557
11558
11559
11560
11561
11562
11563
11564
11565
11566
11567
11568
11569
11570
11571
11572
11573
11574
11575
11576
11577
11578
11579
11580
11581
11582
11583
11584
11585
11586
11587
11588
11589
11590
11591
11592
11593
11594
11595
11596
11597
11598
11599
11600
11601
11602
11603
11604
11605
11606
11607
11608
11609
11610
11611
11612
11613
11614
11615
11616
11617
11618
11619
11620
11621
11622
11623
11624
11625
11626
11627
11628
11629
11630
11631
11632
11633
11634
11635
11636
11637
11638
11639
11640
11641
11642
11643
11644
11645
11646
11647
11648
11649
11650
11651
11652
11653
11654
11655
11656
11657
11658
11659
11660
11661
11662
11663
11664
11665
11666
11667
11668
11669
11670
11671
11672
11673
11674
11675
11676
11677
11678
11679
11680
11681
11682
11683
11684
11685
11686
11687
11688
11689
11690
11691
11692
11693
11694
11695
11696
11697
11698
11699
11700
11701
11702
11703
11704
11705
11706
11707
11708
11709
11710
11711
11712
11713
11714
11715
11716
11717
11718
11719
11720
11721
11722
11723
11724
11725
11726
11727
11728
11729
11730
11731
11732
11733
11734
11735
11736
11737
11738
11739
11740
11741
11742
11743
11744
11745
11746
11747
11748
11749
11750
11751
11752
11753
11754
11755
11756
11757
11758
11759
11760
11761
11762
11763
11764
11765
11766
11767
11768
11769
11770
11771
11772
11773
11774
11775
11776
11777
11778
11779
11780
11781
11782
11783
11784
11785
11786
11787
11788
11789
11790
11791
11792
11793
11794
11795
11796
11797
11798
11799
11800
11801
11802
11803
11804
11805
11806
11807
11808
11809
11810
11811
11812
11813
11814
11815
11816
11817
11818
11819
11820
11821
11822
11823
11824
11825
11826
11827
11828
11829
11830
11831
11832
11833
11834
11835
11836
11837
11838
11839
11840
11841
11842
11843
11844
11845
11846
11847
11848
11849
11850
11851
11852
11853
11854
11855
11856
11857
11858
11859
11860
11861
11862
11863
11864
11865
11866
11867
11868
11869
11870
11871
11872
11873
11874
11875
11876
11877
11878
11879
11880
11881
11882
11883
11884
11885
11886
11887
11888
11889
11890
11891
11892
11893
11894
11895
11896
11897
11898
11899
11900
11901
11902
11903
11904
11905
11906
11907
11908
11909
11910
11911
11912
11913
11914
11915
11916
11917
11918
11919
11920
11921
11922
11923
11924
11925
11926
11927
11928
11929
11930
11931
11932
11933
11934
11935
11936
11937
11938
11939
11940
11941
11942
11943
11944
11945
11946
11947
11948
11949
11950
11951
11952
11953
11954
11955
11956
11957
11958
11959
11960
11961
11962
11963
11964
11965
11966
11967
11968
11969
11970
11971
11972
11973
11974
11975
11976
11977
11978
11979
11980
11981
11982
11983
11984
11985
11986
11987
11988
11989
11990
11991
11992
11993
11994
11995
11996
11997
11998
11999
12000
12001
12002
12003
12004
12005
12006
12007
12008
12009
12010
12011
12012
12013
12014
12015
12016
12017
12018
12019
12020
12021
12022
12023
12024
12025
12026
12027
12028
12029
12030
12031
12032
12033
12034
12035
12036
12037
12038
12039
12040
12041
12042
12043
12044
12045
12046
12047
12048
12049
12050
12051
12052
12053
12054
12055
12056
12057
12058
12059
12060
12061
12062
12063
12064
12065
12066
12067
12068
12069
12070
12071
12072
12073
12074
12075
12076
12077
12078
12079
12080
12081
12082
12083
12084
12085
12086
12087
12088
12089
12090
12091
12092
12093
12094
12095
12096
12097
12098
12099
12100
12101
12102
12103
12104
12105
12106
12107
12108
12109
12110
12111
12112
12113
12114
12115
12116
12117
12118
12119
12120
12121
12122
12123
12124
12125
12126
12127
12128
12129
12130
12131
12132
12133
12134
12135
12136
12137
12138
12139
12140
12141
12142
12143
12144
12145
12146
12147
12148
12149
12150
12151
12152
12153
12154
12155
12156
12157
12158
12159
12160
12161
12162
12163
12164
12165
12166
12167
12168
12169
12170
12171
12172
12173
12174
12175
12176
12177
12178
12179
12180
12181
12182
12183
12184
12185
12186
12187
12188
12189
12190
12191
12192
12193
12194
12195
12196
12197
12198
12199
12200
12201
12202
12203
12204
12205
12206
12207
12208
12209
12210
12211
12212
12213
12214
12215
12216
12217
12218
12219
12220
12221
12222
12223
12224
12225
12226
12227
12228
12229
12230
12231
12232
12233
12234
12235
12236
12237
12238
12239
12240
12241
12242
12243
12244
12245
12246
12247
12248
12249
12250
12251
12252
12253
12254
12255
12256
12257
12258
12259
12260
12261
12262
12263
12264
12265
12266
12267
12268
12269
12270
12271
12272
12273
12274
12275
12276
12277
12278
12279
12280
12281
12282
12283
12284
12285
12286
12287
12288
12289
12290
12291
12292
12293
12294
12295
12296
12297
12298
12299
12300
12301
12302
12303
12304
12305
12306
12307
12308
12309
12310
12311
12312
12313
12314
12315
12316
12317
12318
12319
12320
12321
12322
12323
12324
12325
12326
12327
12328
12329
12330
12331
12332
12333
12334
12335
12336
12337
12338
12339
12340
12341
12342
12343
12344
12345
12346
12347
12348
12349
12350
12351
12352
12353
12354
12355
12356
12357
12358
12359
12360
12361
12362
12363
12364
12365
12366
12367
12368
12369
12370
12371
12372
12373
12374
12375
12376
12377
12378
12379
12380
12381
12382
12383
12384
12385
12386
12387
12388
12389
12390
12391
12392
12393
12394
12395
12396
12397
12398
12399
12400
12401
12402
12403
12404
12405
12406
12407
12408
12409
12410
12411
12412
12413
12414
12415
12416
12417
12418
12419
12420
12421
12422
12423
12424
12425
12426
12427
12428
12429
12430
12431
12432
12433
12434
12435
12436
12437
12438
12439
12440
12441
12442
12443
12444
12445
12446
12447
12448
12449
12450
12451
12452
12453
12454
12455
12456
12457
12458
12459
12460
12461
12462
12463
12464
12465
12466
12467
12468
12469
12470
12471
12472
12473
12474
12475
12476
12477
12478
12479
12480
12481
12482
12483
12484
12485
12486
12487
12488
12489
12490
12491
12492
12493
12494
12495
12496
12497
12498
12499
12500
12501
12502
12503
12504
12505
12506
12507
12508
12509
12510
12511
12512
12513
12514
12515
12516
12517
12518
12519
12520
12521
12522
12523
12524
12525
12526
12527
12528
12529
12530
12531
12532
12533
12534
12535
12536
12537
12538
12539
12540
12541
12542
12543
12544
12545
12546
12547
12548
12549
12550
12551
12552
12553
12554
12555
12556
12557
12558
12559
12560
12561
12562
12563
12564
12565
12566
12567
12568
12569
12570
12571
12572
12573
12574
12575
12576
12577
12578
12579
12580
12581
12582
12583
12584
12585
12586
12587
12588
12589
12590
12591
12592
12593
12594
12595
12596
12597
12598
12599
12600
12601
12602
12603
12604
12605
12606
12607
12608
12609
12610
12611
12612
12613
12614
12615
12616
12617
12618
12619
12620
12621
12622
12623
12624
12625
12626
12627
12628
12629
12630
12631
12632
12633
12634
12635
12636
12637
12638
12639
12640
12641
12642
12643
12644
12645
12646
12647
12648
12649
12650
12651
12652
12653
12654
12655
12656
12657
12658
12659
12660
12661
12662
12663
12664
12665
12666
12667
12668
12669
12670
12671
12672
12673
12674
12675
12676
12677
12678
12679
12680
12681
12682
12683
12684
12685
12686
12687
12688
12689
12690
12691
12692
12693
12694
12695
12696
12697
12698
12699
12700
12701
12702
12703
12704
12705
12706
12707
12708
12709
12710
12711
12712
12713
12714
12715
12716
12717
12718
12719
12720
12721
12722
12723
12724
12725
12726
12727
12728
12729
12730
12731
12732
12733
12734
12735
12736
12737
12738
12739
12740
12741
12742
12743
12744
12745
12746
12747
12748
12749
12750
12751
12752
12753
12754
12755
12756
12757
12758
12759
12760
12761
12762
12763
12764
12765
12766
12767
12768
12769
12770
12771
12772
12773
12774
12775
12776
12777
12778
12779
12780
12781
12782
12783
12784
12785
12786
12787
12788
12789
12790
12791
12792
12793
12794
12795
12796
12797
12798
12799
12800
12801
12802
12803
12804
12805
12806
12807
12808
12809
12810
12811
12812
12813
12814
12815
12816
12817
12818
12819
12820
12821
12822
12823
12824
12825
12826
12827
12828
12829
12830
12831
12832
12833
12834
12835
12836
12837
12838
12839
12840
12841
12842
12843
12844
12845
12846
12847
12848
12849
12850
12851
12852
12853
12854
12855
12856
12857
12858
12859
12860
12861
12862
12863
12864
12865
12866
12867
12868
12869
12870
12871
12872
12873
12874
12875
12876
12877
12878
12879
12880
12881
12882
12883
12884
12885
12886
12887
12888
12889
12890
12891
12892
12893
12894
12895
12896
12897
12898
12899
12900
12901
12902
12903
12904
12905
12906
12907
12908
12909
12910
12911
12912
12913
12914
12915
12916
12917
12918
12919
12920
12921
12922
12923
12924
12925
12926
12927
12928
12929
12930
12931
12932
12933
12934
12935
12936
12937
12938
12939
12940
12941
12942
12943
12944
12945
12946
12947
12948
12949
12950
12951
12952
12953
12954
12955
12956
12957
12958
12959
12960
12961
12962
12963
12964
12965
12966
12967
12968
12969
12970
12971
12972
12973
12974
12975
12976
12977
12978
12979
12980
12981
12982
12983
12984
12985
12986
12987
12988
12989
12990
12991
12992
12993
12994
12995
12996
12997
12998
12999
13000
13001
13002
13003
13004
13005
13006
13007
13008
13009
13010
13011
13012
13013
13014
13015
13016
13017
13018
13019
13020
13021
13022
13023
13024
13025
13026
13027
13028
13029
13030
13031
13032
13033
13034
13035
13036
13037
13038
13039
13040
13041
13042
13043
13044
13045
13046
13047
13048
13049
13050
13051
13052
13053
13054
13055
13056
13057
13058
13059
13060
13061
13062
13063
13064
13065
13066
13067
13068
13069
13070
13071
13072
13073
13074
13075
13076
13077
13078
13079
13080
13081
13082
13083
13084
13085
13086
13087
13088
13089
13090
13091
13092
13093
13094
13095
13096
13097
13098
13099
13100
13101
13102
13103
13104
13105
13106
13107
13108
13109
13110
13111
13112
13113
13114
13115
13116
13117
13118
13119
13120
13121
13122
13123
13124
13125
13126
13127
13128
13129
13130
13131
13132
13133
13134
13135
13136
13137
13138
13139
13140
13141
13142
13143
13144
13145
13146
13147
13148
13149
13150
13151
13152
13153
13154
13155
13156
13157
13158
13159
13160
13161
13162
13163
13164
13165
13166
13167
13168
13169
13170
13171
13172
13173
13174
13175
13176
13177
13178
13179
13180
13181
13182
13183
13184
13185
13186
13187
13188
13189
13190
13191
13192
13193
13194
13195
13196
13197
13198
13199
13200
13201
13202
13203
13204
13205
13206
13207
13208
13209
13210
13211
13212
13213
13214
13215
13216
13217
13218
13219
13220
13221
13222
13223
13224
13225
13226
13227
13228
13229
13230
13231
13232
13233
13234
13235
13236
13237
13238
13239
13240
13241
13242
13243
13244
13245
13246
13247
13248
13249
13250
13251
13252
13253
13254
13255
13256
13257
13258
13259
13260
13261
13262
13263
13264
13265
13266
13267
13268
13269
13270
13271
13272
13273
13274
13275
13276
13277
13278
13279
13280
13281
13282
13283
13284
13285
13286
13287
13288
13289
13290
13291
13292
13293
13294
13295
13296
13297
13298
13299
13300
13301
13302
13303
13304
13305
13306
13307
13308
13309
13310
13311
13312
13313
13314
13315
13316
13317
13318
13319
13320
13321
13322
13323
13324
13325
13326
13327
13328
13329
13330
13331
13332
13333
13334
13335
13336
13337
13338
13339
13340
13341
13342
13343
13344
13345
13346
13347
13348
13349
13350
13351
13352
13353
13354
13355
13356
13357
13358
13359
13360
13361
13362
13363
13364
13365
13366
13367
13368
13369
13370
13371
13372
13373
13374
13375
13376
13377
13378
13379
13380
13381
13382
13383
13384
13385
13386
13387
13388
13389
13390
13391
13392
13393
13394
13395
13396
13397
13398
13399
13400
13401
13402
13403
13404
13405
13406
13407
13408
13409
13410
13411
13412
13413
13414
13415
13416
13417
13418
13419
13420
13421
13422
13423
13424
13425
13426
13427
13428
13429
13430
13431
13432
13433
13434
13435
13436
13437
13438
13439
13440
13441
13442
13443
13444
13445
13446
13447
13448
13449
13450
13451
13452
13453
13454
13455
13456
13457
13458
13459
13460
13461
13462
13463
13464
13465
13466
13467
13468
13469
13470
13471
13472
|
/* Process declarations and variables for C++ compiler.
Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
Contributed by Michael Tiemann (tiemann@cygnus.com)
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
/* Process declarations and symbol lookup for C++ front end.
Also constructs types; the standard scalar types at initialization,
and structure, union, array and enum types when they are declared. */
/* ??? not all decl nodes are given the most useful possible
line numbers. For example, the CONST_DECLs for enum values. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
#include "flags.h"
#include "cp-tree.h"
#include "tree-iterator.h"
#include "tree-inline.h"
#include "decl.h"
#include "intl.h"
#include "output.h"
#include "toplev.h"
#include "hashtab.h"
#include "tm_p.h"
#include "target.h"
#include "c-family/c-common.h"
#include "c-family/c-objc.h"
#include "c-family/c-pragma.h"
#include "diagnostic.h"
#include "intl.h"
#include "debug.h"
#include "timevar.h"
#include "pointer-set.h"
#include "splay-tree.h"
#include "plugin.h"
/* Possible cases of bad specifiers type used by bad_specifiers. */
enum bad_spec_place {
BSP_VAR, /* variable */
BSP_PARM, /* parameter */
BSP_TYPE, /* type */
BSP_FIELD /* field */
};
static tree grokparms (tree parmlist, tree *);
static const char *redeclaration_error_message (tree, tree);
static int decl_jump_unsafe (tree);
static void require_complete_types_for_parms (tree);
static int ambi_op_p (enum tree_code);
static int unary_op_p (enum tree_code);
static void push_local_name (tree);
static tree grok_reference_init (tree, tree, tree, tree *);
static tree grokvardecl (tree, tree, const cp_decl_specifier_seq *,
int, int, tree);
static void record_unknown_type (tree, const char *);
static tree builtin_function_1 (tree, tree, bool);
static tree build_library_fn_1 (tree, enum tree_code, tree);
static int member_function_or_else (tree, tree, enum overload_flags);
static void bad_specifiers (tree, enum bad_spec_place, int, int, int, int,
int);
static void check_for_uninitialized_const_var (tree);
static hashval_t typename_hash (const void *);
static int typename_compare (const void *, const void *);
static tree local_variable_p_walkfn (tree *, int *, void *);
static tree record_builtin_java_type (const char *, int);
static const char *tag_name (enum tag_types);
static tree lookup_and_check_tag (enum tag_types, tree, tag_scope, bool);
static int walk_namespaces_r (tree, walk_namespaces_fn, void *);
static void maybe_deduce_size_from_array_init (tree, tree);
static void layout_var_decl (tree);
static tree check_initializer (tree, tree, int, tree *);
static void make_rtl_for_nonlocal_decl (tree, tree, const char *);
static void save_function_data (tree);
static void copy_type_enum (tree , tree);
static void check_function_type (tree, tree);
static void finish_constructor_body (void);
static void begin_destructor_body (void);
static void finish_destructor_body (void);
static void record_key_method_defined (tree);
static tree create_array_type_for_decl (tree, tree, tree);
static tree get_atexit_node (void);
static tree get_dso_handle_node (void);
static tree start_cleanup_fn (void);
static void end_cleanup_fn (void);
static tree cp_make_fname_decl (location_t, tree, int);
static void initialize_predefined_identifiers (void);
static tree check_special_function_return_type
(special_function_kind, tree, tree);
static tree push_cp_library_fn (enum tree_code, tree);
static tree build_cp_library_fn (tree, enum tree_code, tree);
static void store_parm_decls (tree);
static void initialize_local_var (tree, tree);
static void expand_static_init (tree, tree);
/* The following symbols are subsumed in the cp_global_trees array, and
listed here individually for documentation purposes.
C++ extensions
tree wchar_decl_node;
tree vtable_entry_type;
tree delta_type_node;
tree __t_desc_type_node;
tree class_type_node;
tree unknown_type_node;
Array type `vtable_entry_type[]'
tree vtbl_type_node;
tree vtbl_ptr_type_node;
Namespaces,
tree std_node;
tree abi_node;
A FUNCTION_DECL which can call `abort'. Not necessarily the
one that the user will declare, but sufficient to be called
by routines that want to abort the program.
tree abort_fndecl;
The FUNCTION_DECL for the default `::operator delete'.
tree global_delete_fndecl;
Used by RTTI
tree type_info_type_node, tinfo_decl_id, tinfo_decl_type;
tree tinfo_var_id; */
tree cp_global_trees[CPTI_MAX];
/* Indicates that there is a type value in some namespace, although
that is not necessarily in scope at the moment. */
tree global_type_node;
/* The node that holds the "name" of the global scope. */
tree global_scope_name;
#define local_names cp_function_chain->x_local_names
/* A list of objects which have constructors or destructors
which reside in the global scope. The decl is stored in
the TREE_VALUE slot and the initializer is stored
in the TREE_PURPOSE slot. */
tree static_aggregates;
/* -- end of C++ */
/* A node for the integer constant 2. */
tree integer_two_node;
/* Used only for jumps to as-yet undefined labels, since jumps to
defined labels can have their validity checked immediately. */
struct GTY((chain_next ("%h.next"))) named_label_use_entry {
struct named_label_use_entry *next;
/* The binding level to which this entry is *currently* attached.
This is initially the binding level in which the goto appeared,
but is modified as scopes are closed. */
struct cp_binding_level *binding_level;
/* The head of the names list that was current when the goto appeared,
or the inner scope popped. These are the decls that will *not* be
skipped when jumping to the label. */
tree names_in_scope;
/* The location of the goto, for error reporting. */
location_t o_goto_locus;
/* True if an OpenMP structured block scope has been closed since
the goto appeared. This means that the branch from the label will
illegally exit an OpenMP scope. */
bool in_omp_scope;
};
/* A list of all LABEL_DECLs in the function that have names. Here so
we can clear out their names' definitions at the end of the
function, and so we can check the validity of jumps to these labels. */
struct GTY(()) named_label_entry {
/* The decl itself. */
tree label_decl;
/* The binding level to which the label is *currently* attached.
This is initially set to the binding level in which the label
is defined, but is modified as scopes are closed. */
struct cp_binding_level *binding_level;
/* The head of the names list that was current when the label was
defined, or the inner scope popped. These are the decls that will
be skipped when jumping to the label. */
tree names_in_scope;
/* A vector of all decls from all binding levels that would be
crossed by a backward branch to the label. */
VEC(tree,gc) *bad_decls;
/* A list of uses of the label, before the label is defined. */
struct named_label_use_entry *uses;
/* The following bits are set after the label is defined, and are
updated as scopes are popped. They indicate that a backward jump
to the label will illegally enter a scope of the given flavor. */
bool in_try_scope;
bool in_catch_scope;
bool in_omp_scope;
};
#define named_labels cp_function_chain->x_named_labels
/* The number of function bodies which we are currently processing.
(Zero if we are at namespace scope, one inside the body of a
function, two inside the body of a function in a local class, etc.) */
int function_depth;
/* To avoid unwanted recursion, finish_function defers all mark_used calls
encountered during its execution until it finishes. */
bool defer_mark_used_calls;
VEC(tree, gc) *deferred_mark_used_calls;
/* States indicating how grokdeclarator() should handle declspecs marked
with __attribute__((deprecated)). An object declared as
__attribute__((deprecated)) suppresses warnings of uses of other
deprecated items. */
enum deprecated_states deprecated_state = DEPRECATED_NORMAL;
/* A list of VAR_DECLs whose type was incomplete at the time the
variable was declared. */
typedef struct GTY(()) incomplete_var_d {
tree decl;
tree incomplete_type;
} incomplete_var;
DEF_VEC_O(incomplete_var);
DEF_VEC_ALLOC_O(incomplete_var,gc);
static GTY(()) VEC(incomplete_var,gc) *incomplete_vars;
/* Returns the kind of template specialization we are currently
processing, given that it's declaration contained N_CLASS_SCOPES
explicit scope qualifications. */
tmpl_spec_kind
current_tmpl_spec_kind (int n_class_scopes)
{
int n_template_parm_scopes = 0;
int seen_specialization_p = 0;
int innermost_specialization_p = 0;
struct cp_binding_level *b;
/* Scan through the template parameter scopes. */
for (b = current_binding_level;
b->kind == sk_template_parms;
b = b->level_chain)
{
/* If we see a specialization scope inside a parameter scope,
then something is wrong. That corresponds to a declaration
like:
template <class T> template <> ...
which is always invalid since [temp.expl.spec] forbids the
specialization of a class member template if the enclosing
class templates are not explicitly specialized as well. */
if (b->explicit_spec_p)
{
if (n_template_parm_scopes == 0)
innermost_specialization_p = 1;
else
seen_specialization_p = 1;
}
else if (seen_specialization_p == 1)
return tsk_invalid_member_spec;
++n_template_parm_scopes;
}
/* Handle explicit instantiations. */
if (processing_explicit_instantiation)
{
if (n_template_parm_scopes != 0)
/* We've seen a template parameter list during an explicit
instantiation. For example:
template <class T> template void f(int);
This is erroneous. */
return tsk_invalid_expl_inst;
else
return tsk_expl_inst;
}
if (n_template_parm_scopes < n_class_scopes)
/* We've not seen enough template headers to match all the
specialized classes present. For example:
template <class T> void R<T>::S<T>::f(int);
This is invalid; there needs to be one set of template
parameters for each class. */
return tsk_insufficient_parms;
else if (n_template_parm_scopes == n_class_scopes)
/* We're processing a non-template declaration (even though it may
be a member of a template class.) For example:
template <class T> void S<T>::f(int);
The `class T' matches the `S<T>', leaving no template headers
corresponding to the `f'. */
return tsk_none;
else if (n_template_parm_scopes > n_class_scopes + 1)
/* We've got too many template headers. For example:
template <> template <class T> void f (T);
There need to be more enclosing classes. */
return tsk_excessive_parms;
else
/* This must be a template. It's of the form:
template <class T> template <class U> void S<T>::f(U);
This is a specialization if the innermost level was a
specialization; otherwise it's just a definition of the
template. */
return innermost_specialization_p ? tsk_expl_spec : tsk_template;
}
/* Exit the current scope. */
void
finish_scope (void)
{
poplevel (0, 0, 0);
}
/* When a label goes out of scope, check to see if that label was used
in a valid manner, and issue any appropriate warnings or errors. */
static void
pop_label (tree label, tree old_value)
{
if (!processing_template_decl)
{
if (DECL_INITIAL (label) == NULL_TREE)
{
location_t location;
error ("label %q+D used but not defined", label);
location = input_location; /* FIXME want (input_filename, (line)0) */
/* Avoid crashing later. */
define_label (location, DECL_NAME (label));
}
else
warn_for_unused_label (label);
}
SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label), old_value);
}
/* At the end of a function, all labels declared within the function
go out of scope. BLOCK is the top-level block for the
function. */
static int
pop_labels_1 (void **slot, void *data)
{
struct named_label_entry *ent = (struct named_label_entry *) *slot;
tree block = (tree) data;
pop_label (ent->label_decl, NULL_TREE);
/* Put the labels into the "variables" of the top-level block,
so debugger can see them. */
DECL_CHAIN (ent->label_decl) = BLOCK_VARS (block);
BLOCK_VARS (block) = ent->label_decl;
htab_clear_slot (named_labels, slot);
return 1;
}
static void
pop_labels (tree block)
{
if (named_labels)
{
htab_traverse (named_labels, pop_labels_1, block);
named_labels = NULL;
}
}
/* At the end of a block with local labels, restore the outer definition. */
static void
pop_local_label (tree label, tree old_value)
{
struct named_label_entry dummy;
void **slot;
pop_label (label, old_value);
dummy.label_decl = label;
slot = htab_find_slot (named_labels, &dummy, NO_INSERT);
htab_clear_slot (named_labels, slot);
}
/* The following two routines are used to interface to Objective-C++.
The binding level is purposely treated as an opaque type. */
void *
objc_get_current_scope (void)
{
return current_binding_level;
}
/* The following routine is used by the NeXT-style SJLJ exceptions;
variables get marked 'volatile' so as to not be clobbered by
_setjmp()/_longjmp() calls. All variables in the current scope,
as well as parent scopes up to (but not including) ENCLOSING_BLK
shall be thusly marked. */
void
objc_mark_locals_volatile (void *enclosing_blk)
{
struct cp_binding_level *scope;
for (scope = current_binding_level;
scope && scope != enclosing_blk;
scope = scope->level_chain)
{
tree decl;
for (decl = scope->names; decl; decl = TREE_CHAIN (decl))
objc_volatilize_decl (decl);
/* Do not climb up past the current function. */
if (scope->kind == sk_function_parms)
break;
}
}
/* Update data for defined and undefined labels when leaving a scope. */
static int
poplevel_named_label_1 (void **slot, void *data)
{
struct named_label_entry *ent = (struct named_label_entry *) *slot;
struct cp_binding_level *bl = (struct cp_binding_level *) data;
struct cp_binding_level *obl = bl->level_chain;
if (ent->binding_level == bl)
{
tree decl;
/* ENT->NAMES_IN_SCOPE may contain a mixture of DECLs and
TREE_LISTs representing OVERLOADs, so be careful. */
for (decl = ent->names_in_scope; decl; decl = (DECL_P (decl)
? DECL_CHAIN (decl)
: TREE_CHAIN (decl)))
if (decl_jump_unsafe (decl))
VEC_safe_push (tree, gc, ent->bad_decls, decl);
ent->binding_level = obl;
ent->names_in_scope = obl->names;
switch (bl->kind)
{
case sk_try:
ent->in_try_scope = true;
break;
case sk_catch:
ent->in_catch_scope = true;
break;
case sk_omp:
ent->in_omp_scope = true;
break;
default:
break;
}
}
else if (ent->uses)
{
struct named_label_use_entry *use;
for (use = ent->uses; use ; use = use->next)
if (use->binding_level == bl)
{
use->binding_level = obl;
use->names_in_scope = obl->names;
if (bl->kind == sk_omp)
use->in_omp_scope = true;
}
}
return 1;
}
/* Saved errorcount to avoid -Wunused-but-set-{parameter,variable} warnings
when errors were reported, except for -Werror-unused-but-set-*. */
static int unused_but_set_errorcount;
/* Exit a binding level.
Pop the level off, and restore the state of the identifier-decl mappings
that were in effect when this level was entered.
If KEEP == 1, this level had explicit declarations, so
and create a "block" (a BLOCK node) for the level
to record its declarations and subblocks for symbol table output.
If FUNCTIONBODY is nonzero, this level is the body of a function,
so create a block as if KEEP were set and also clear out all
label names.
If REVERSE is nonzero, reverse the order of decls before putting
them into the BLOCK. */
tree
poplevel (int keep, int reverse, int functionbody)
{
tree link;
/* The chain of decls was accumulated in reverse order.
Put it into forward order, just for cleanliness. */
tree decls;
tree subblocks;
tree block;
tree decl;
int leaving_for_scope;
scope_kind kind;
unsigned ix;
cp_label_binding *label_bind;
timevar_push (TV_NAME_LOOKUP);
restart:
block = NULL_TREE;
gcc_assert (current_binding_level->kind != sk_class);
if (current_binding_level->kind == sk_cleanup)
functionbody = 0;
subblocks = functionbody >= 0 ? current_binding_level->blocks : 0;
gcc_assert (!VEC_length(cp_class_binding,
current_binding_level->class_shadowed));
/* We used to use KEEP == 2 to indicate that the new block should go
at the beginning of the list of blocks at this binding level,
rather than the end. This hack is no longer used. */
gcc_assert (keep == 0 || keep == 1);
if (current_binding_level->keep)
keep = 1;
/* Any uses of undefined labels, and any defined labels, now operate
under constraints of next binding contour. */
if (cfun && !functionbody && named_labels)
htab_traverse (named_labels, poplevel_named_label_1,
current_binding_level);
/* Get the decls in the order they were written.
Usually current_binding_level->names is in reverse order.
But parameter decls were previously put in forward order. */
if (reverse)
current_binding_level->names
= decls = nreverse (current_binding_level->names);
else
decls = current_binding_level->names;
/* If there were any declarations or structure tags in that level,
or if this level is a function body,
create a BLOCK to record them for the life of this function. */
block = NULL_TREE;
if (keep == 1 || functionbody)
block = make_node (BLOCK);
if (block != NULL_TREE)
{
BLOCK_VARS (block) = decls;
BLOCK_SUBBLOCKS (block) = subblocks;
}
/* In each subblock, record that this is its superior. */
if (keep >= 0)
for (link = subblocks; link; link = BLOCK_CHAIN (link))
BLOCK_SUPERCONTEXT (link) = block;
/* We still support the old for-scope rules, whereby the variables
in a for-init statement were in scope after the for-statement
ended. We only use the new rules if flag_new_for_scope is
nonzero. */
leaving_for_scope
= current_binding_level->kind == sk_for && flag_new_for_scope == 1;
/* Before we remove the declarations first check for unused variables. */
if ((warn_unused_variable || warn_unused_but_set_variable)
&& !processing_template_decl)
for (decl = getdecls (); decl; decl = TREE_CHAIN (decl))
if (TREE_CODE (decl) == VAR_DECL
&& (! TREE_USED (decl) || !DECL_READ_P (decl))
&& ! DECL_IN_SYSTEM_HEADER (decl)
&& DECL_NAME (decl) && ! DECL_ARTIFICIAL (decl))
{
if (! TREE_USED (decl))
warning (OPT_Wunused_variable, "unused variable %q+D", decl);
else if (DECL_CONTEXT (decl) == current_function_decl
&& TREE_TYPE (decl) != error_mark_node
&& TREE_CODE (TREE_TYPE (decl)) != REFERENCE_TYPE
&& errorcount == unused_but_set_errorcount
&& (!CLASS_TYPE_P (TREE_TYPE (decl))
|| !TYPE_HAS_NONTRIVIAL_DESTRUCTOR (TREE_TYPE (decl))))
{
warning (OPT_Wunused_but_set_variable,
"variable %q+D set but not used", decl);
unused_but_set_errorcount = errorcount;
}
}
/* Remove declarations for all the DECLs in this level. */
for (link = decls; link; link = TREE_CHAIN (link))
{
if (leaving_for_scope && TREE_CODE (link) == VAR_DECL
&& DECL_NAME (link))
{
tree name = DECL_NAME (link);
cxx_binding *ob;
tree ns_binding;
ob = outer_binding (name,
IDENTIFIER_BINDING (name),
/*class_p=*/true);
if (!ob)
ns_binding = IDENTIFIER_NAMESPACE_VALUE (name);
else
ns_binding = NULL_TREE;
if (ob && ob->scope == current_binding_level->level_chain)
/* We have something like:
int i;
for (int i; ;);
and we are leaving the `for' scope. There's no reason to
keep the binding of the inner `i' in this case. */
pop_binding (name, link);
else if ((ob && (TREE_CODE (ob->value) == TYPE_DECL))
|| (ns_binding && TREE_CODE (ns_binding) == TYPE_DECL))
/* Here, we have something like:
typedef int I;
void f () {
for (int I; ;);
}
We must pop the for-scope binding so we know what's a
type and what isn't. */
pop_binding (name, link);
else
{
/* Mark this VAR_DECL as dead so that we can tell we left it
there only for backward compatibility. */
DECL_DEAD_FOR_LOCAL (link) = 1;
/* Keep track of what should have happened when we
popped the binding. */
if (ob && ob->value)
{
SET_DECL_SHADOWED_FOR_VAR (link, ob->value);
DECL_HAS_SHADOWED_FOR_VAR_P (link) = 1;
}
/* Add it to the list of dead variables in the next
outermost binding to that we can remove these when we
leave that binding. */
VEC_safe_push (tree, gc,
current_binding_level->level_chain->dead_vars_from_for,
link);
/* Although we don't pop the cxx_binding, we do clear
its SCOPE since the scope is going away now. */
IDENTIFIER_BINDING (name)->scope
= current_binding_level->level_chain;
}
}
else
{
tree name;
/* Remove the binding. */
decl = link;
if (TREE_CODE (decl) == TREE_LIST)
decl = TREE_VALUE (decl);
name = decl;
if (TREE_CODE (name) == OVERLOAD)
name = OVL_FUNCTION (name);
gcc_assert (DECL_P (name));
pop_binding (DECL_NAME (name), decl);
}
}
/* Remove declarations for any `for' variables from inner scopes
that we kept around. */
FOR_EACH_VEC_ELT_REVERSE (tree, current_binding_level->dead_vars_from_for,
ix, decl)
pop_binding (DECL_NAME (decl), decl);
/* Restore the IDENTIFIER_TYPE_VALUEs. */
for (link = current_binding_level->type_shadowed;
link; link = TREE_CHAIN (link))
SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link), TREE_VALUE (link));
/* Restore the IDENTIFIER_LABEL_VALUEs for local labels. */
FOR_EACH_VEC_ELT_REVERSE (cp_label_binding,
current_binding_level->shadowed_labels,
ix, label_bind)
pop_local_label (label_bind->label, label_bind->prev_value);
/* There may be OVERLOADs (wrapped in TREE_LISTs) on the BLOCK_VARs
list if a `using' declaration put them there. The debugging
back ends won't understand OVERLOAD, so we remove them here.
Because the BLOCK_VARS are (temporarily) shared with
CURRENT_BINDING_LEVEL->NAMES we must do this fixup after we have
popped all the bindings. */
if (block)
{
tree* d;
for (d = &BLOCK_VARS (block); *d; )
{
if (TREE_CODE (*d) == TREE_LIST)
*d = TREE_CHAIN (*d);
else
d = &DECL_CHAIN (*d);
}
}
/* If the level being exited is the top level of a function,
check over all the labels. */
if (functionbody)
{
/* Since this is the top level block of a function, the vars are
the function's parameters. Don't leave them in the BLOCK
because they are found in the FUNCTION_DECL instead. */
BLOCK_VARS (block) = 0;
pop_labels (block);
}
kind = current_binding_level->kind;
if (kind == sk_cleanup)
{
tree stmt;
/* If this is a temporary binding created for a cleanup, then we'll
have pushed a statement list level. Pop that, create a new
BIND_EXPR for the block, and insert it into the stream. */
stmt = pop_stmt_list (current_binding_level->statement_list);
stmt = c_build_bind_expr (input_location, block, stmt);
add_stmt (stmt);
}
leave_scope ();
if (functionbody)
{
/* The current function is being defined, so its DECL_INITIAL
should be error_mark_node. */
gcc_assert (DECL_INITIAL (current_function_decl) == error_mark_node);
DECL_INITIAL (current_function_decl) = block;
}
else if (block)
current_binding_level->blocks
= block_chainon (current_binding_level->blocks, block);
/* If we did not make a block for the level just exited,
any blocks made for inner levels
(since they cannot be recorded as subblocks in that level)
must be carried forward so they will later become subblocks
of something else. */
else if (subblocks)
current_binding_level->blocks
= block_chainon (current_binding_level->blocks, subblocks);
/* Each and every BLOCK node created here in `poplevel' is important
(e.g. for proper debugging information) so if we created one
earlier, mark it as "used". */
if (block)
TREE_USED (block) = 1;
/* All temporary bindings created for cleanups are popped silently. */
if (kind == sk_cleanup)
goto restart;
POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, block);
}
/* Walk all the namespaces contained NAMESPACE, including NAMESPACE
itself, calling F for each. The DATA is passed to F as well. */
static int
walk_namespaces_r (tree name_space, walk_namespaces_fn f, void* data)
{
int result = 0;
tree current = NAMESPACE_LEVEL (name_space)->namespaces;
result |= (*f) (name_space, data);
for (; current; current = DECL_CHAIN (current))
result |= walk_namespaces_r (current, f, data);
return result;
}
/* Walk all the namespaces, calling F for each. The DATA is passed to
F as well. */
int
walk_namespaces (walk_namespaces_fn f, void* data)
{
return walk_namespaces_r (global_namespace, f, data);
}
/* Call wrapup_globals_declarations for the globals in NAMESPACE. If
DATA is non-NULL, this is the last time we will call
wrapup_global_declarations for this NAMESPACE. */
int
wrapup_globals_for_namespace (tree name_space, void* data)
{
struct cp_binding_level *level = NAMESPACE_LEVEL (name_space);
VEC(tree,gc) *statics = level->static_decls;
tree *vec = VEC_address (tree, statics);
int len = VEC_length (tree, statics);
int last_time = (data != 0);
if (last_time)
{
check_global_declarations (vec, len);
emit_debug_global_declarations (vec, len);
return 0;
}
/* Write out any globals that need to be output. */
return wrapup_global_declarations (vec, len);
}
/* In C++, you don't have to write `struct S' to refer to `S'; you
can just use `S'. We accomplish this by creating a TYPE_DECL as
if the user had written `typedef struct S S'. Create and return
the TYPE_DECL for TYPE. */
tree
create_implicit_typedef (tree name, tree type)
{
tree decl;
decl = build_decl (input_location, TYPE_DECL, name, type);
DECL_ARTIFICIAL (decl) = 1;
/* There are other implicit type declarations, like the one *within*
a class that allows you to write `S::S'. We must distinguish
amongst these. */
SET_DECL_IMPLICIT_TYPEDEF_P (decl);
TYPE_NAME (type) = decl;
TYPE_STUB_DECL (type) = decl;
return decl;
}
/* Remember a local name for name-mangling purposes. */
static void
push_local_name (tree decl)
{
size_t i, nelts;
tree t, name;
timevar_push (TV_NAME_LOOKUP);
name = DECL_NAME (decl);
nelts = VEC_length (tree, local_names);
for (i = 0; i < nelts; i++)
{
t = VEC_index (tree, local_names, i);
if (DECL_NAME (t) == name)
{
if (!DECL_LANG_SPECIFIC (decl))
retrofit_lang_decl (decl);
DECL_LANG_SPECIFIC (decl)->u.base.u2sel = 1;
if (DECL_LANG_SPECIFIC (t))
DECL_DISCRIMINATOR (decl) = DECL_DISCRIMINATOR (t) + 1;
else
DECL_DISCRIMINATOR (decl) = 1;
VEC_replace (tree, local_names, i, decl);
timevar_pop (TV_NAME_LOOKUP);
return;
}
}
VEC_safe_push (tree, gc, local_names, decl);
timevar_pop (TV_NAME_LOOKUP);
}
/* Subroutine of duplicate_decls: return truthvalue of whether
or not types of these decls match.
For C++, we must compare the parameter list so that `int' can match
`int&' in a parameter position, but `int&' is not confused with
`const int&'. */
int
decls_match (tree newdecl, tree olddecl)
{
int types_match;
if (newdecl == olddecl)
return 1;
if (TREE_CODE (newdecl) != TREE_CODE (olddecl))
/* If the two DECLs are not even the same kind of thing, we're not
interested in their types. */
return 0;
if (TREE_CODE (newdecl) == FUNCTION_DECL)
{
tree f1 = TREE_TYPE (newdecl);
tree f2 = TREE_TYPE (olddecl);
tree p1 = TYPE_ARG_TYPES (f1);
tree p2 = TYPE_ARG_TYPES (f2);
/* Specializations of different templates are different functions
even if they have the same type. */
tree t1 = (DECL_USE_TEMPLATE (newdecl)
? DECL_TI_TEMPLATE (newdecl)
: NULL_TREE);
tree t2 = (DECL_USE_TEMPLATE (olddecl)
? DECL_TI_TEMPLATE (olddecl)
: NULL_TREE);
if (t1 != t2)
return 0;
if (CP_DECL_CONTEXT (newdecl) != CP_DECL_CONTEXT (olddecl)
&& ! (DECL_EXTERN_C_P (newdecl)
&& DECL_EXTERN_C_P (olddecl)))
return 0;
#ifdef NO_IMPLICIT_EXTERN_C
/* A new declaration doesn't match a built-in one unless it
is also extern "C". */
if (DECL_IS_BUILTIN (olddecl)
&& DECL_EXTERN_C_P (olddecl) && !DECL_EXTERN_C_P (newdecl))
return 0;
#endif
if (TREE_CODE (f1) != TREE_CODE (f2))
return 0;
if (same_type_p (TREE_TYPE (f1), TREE_TYPE (f2)))
{
if (!prototype_p (f2) && DECL_EXTERN_C_P (olddecl)
&& (DECL_BUILT_IN (olddecl)
#ifndef NO_IMPLICIT_EXTERN_C
|| (DECL_IN_SYSTEM_HEADER (newdecl) && !DECL_CLASS_SCOPE_P (newdecl))
|| (DECL_IN_SYSTEM_HEADER (olddecl) && !DECL_CLASS_SCOPE_P (olddecl))
#endif
))
{
types_match = self_promoting_args_p (p1);
if (p1 == void_list_node)
TREE_TYPE (newdecl) = TREE_TYPE (olddecl);
}
#ifndef NO_IMPLICIT_EXTERN_C
else if (!prototype_p (f1)
&& (DECL_EXTERN_C_P (olddecl)
&& DECL_IN_SYSTEM_HEADER (olddecl)
&& !DECL_CLASS_SCOPE_P (olddecl))
&& (DECL_EXTERN_C_P (newdecl)
&& DECL_IN_SYSTEM_HEADER (newdecl)
&& !DECL_CLASS_SCOPE_P (newdecl)))
{
types_match = self_promoting_args_p (p2);
TREE_TYPE (newdecl) = TREE_TYPE (olddecl);
}
#endif
else
types_match =
compparms (p1, p2)
&& (TYPE_ATTRIBUTES (TREE_TYPE (newdecl)) == NULL_TREE
|| comp_type_attributes (TREE_TYPE (newdecl),
TREE_TYPE (olddecl)) != 0);
}
else
types_match = 0;
}
else if (TREE_CODE (newdecl) == TEMPLATE_DECL)
{
if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl))
!= TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)))
return 0;
if (!comp_template_parms (DECL_TEMPLATE_PARMS (newdecl),
DECL_TEMPLATE_PARMS (olddecl)))
return 0;
if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
types_match = same_type_p (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl)),
TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl)));
else
types_match = decls_match (DECL_TEMPLATE_RESULT (olddecl),
DECL_TEMPLATE_RESULT (newdecl));
}
else
{
/* Need to check scope for variable declaration (VAR_DECL).
For typedef (TYPE_DECL), scope is ignored. */
if (TREE_CODE (newdecl) == VAR_DECL
&& CP_DECL_CONTEXT (newdecl) != CP_DECL_CONTEXT (olddecl)
/* [dcl.link]
Two declarations for an object with C language linkage
with the same name (ignoring the namespace that qualify
it) that appear in different namespace scopes refer to
the same object. */
&& !(DECL_EXTERN_C_P (olddecl) && DECL_EXTERN_C_P (newdecl)))
return 0;
if (TREE_TYPE (newdecl) == error_mark_node)
types_match = TREE_TYPE (olddecl) == error_mark_node;
else if (TREE_TYPE (olddecl) == NULL_TREE)
types_match = TREE_TYPE (newdecl) == NULL_TREE;
else if (TREE_TYPE (newdecl) == NULL_TREE)
types_match = 0;
else
types_match = comptypes (TREE_TYPE (newdecl),
TREE_TYPE (olddecl),
COMPARE_REDECLARATION);
}
return types_match;
}
/* If NEWDECL is `static' and an `extern' was seen previously,
warn about it. OLDDECL is the previous declaration.
Note that this does not apply to the C++ case of declaring
a variable `extern const' and then later `const'.
Don't complain about built-in functions, since they are beyond
the user's control. */
void
warn_extern_redeclared_static (tree newdecl, tree olddecl)
{
if (TREE_CODE (newdecl) == TYPE_DECL
|| TREE_CODE (newdecl) == TEMPLATE_DECL
|| TREE_CODE (newdecl) == CONST_DECL
|| TREE_CODE (newdecl) == NAMESPACE_DECL)
return;
/* Don't get confused by static member functions; that's a different
use of `static'. */
if (TREE_CODE (newdecl) == FUNCTION_DECL
&& DECL_STATIC_FUNCTION_P (newdecl))
return;
/* If the old declaration was `static', or the new one isn't, then
everything is OK. */
if (DECL_THIS_STATIC (olddecl) || !DECL_THIS_STATIC (newdecl))
return;
/* It's OK to declare a builtin function as `static'. */
if (TREE_CODE (olddecl) == FUNCTION_DECL
&& DECL_ARTIFICIAL (olddecl))
return;
permerror (input_location, "%qD was declared %<extern%> and later %<static%>", newdecl);
permerror (input_location, "previous declaration of %q+D", olddecl);
}
/* NEW_DECL is a redeclaration of OLD_DECL; both are functions or
function templates. If their exception specifications do not
match, issue a diagnostic. */
static void
check_redeclaration_exception_specification (tree new_decl,
tree old_decl)
{
tree new_type;
tree old_type;
tree new_exceptions;
tree old_exceptions;
new_type = TREE_TYPE (new_decl);
new_exceptions = TYPE_RAISES_EXCEPTIONS (new_type);
old_type = TREE_TYPE (old_decl);
old_exceptions = TYPE_RAISES_EXCEPTIONS (old_type);
/* [except.spec]
If any declaration of a function has an exception-specification,
all declarations, including the definition and an explicit
specialization, of that function shall have an
exception-specification with the same set of type-ids. */
if ((pedantic || ! DECL_IN_SYSTEM_HEADER (old_decl))
&& ! DECL_IS_BUILTIN (old_decl)
&& flag_exceptions
&& !comp_except_specs (new_exceptions, old_exceptions, ce_normal))
{
error ("declaration of %qF has a different exception specifier",
new_decl);
error ("from previous declaration %q+F", old_decl);
}
}
/* Return true if OLD_DECL and NEW_DECL agree on constexprness.
Otherwise issue diagnostics. */
static bool
validate_constexpr_redeclaration (tree old_decl, tree new_decl)
{
old_decl = STRIP_TEMPLATE (old_decl);
new_decl = STRIP_TEMPLATE (new_decl);
if (!VAR_OR_FUNCTION_DECL_P (old_decl)
|| !VAR_OR_FUNCTION_DECL_P (new_decl))
return true;
if (DECL_DECLARED_CONSTEXPR_P (old_decl)
== DECL_DECLARED_CONSTEXPR_P (new_decl))
return true;
if (TREE_CODE (old_decl) == FUNCTION_DECL && DECL_BUILT_IN (old_decl))
{
/* Hide a built-in declaration. */
DECL_DECLARED_CONSTEXPR_P (old_decl)
= DECL_DECLARED_CONSTEXPR_P (new_decl);
return true;
}
error ("redeclaration %qD differs in %<constexpr%>", new_decl);
error ("from previous declaration %q+D", old_decl);
return false;
}
#define GNU_INLINE_P(fn) (DECL_DECLARED_INLINE_P (fn) \
&& lookup_attribute ("gnu_inline", \
DECL_ATTRIBUTES (fn)))
/* If NEWDECL is a redeclaration of OLDDECL, merge the declarations.
If the redeclaration is invalid, a diagnostic is issued, and the
error_mark_node is returned. Otherwise, OLDDECL is returned.
If NEWDECL is not a redeclaration of OLDDECL, NULL_TREE is
returned.
NEWDECL_IS_FRIEND is true if NEWDECL was declared as a friend. */
tree
duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
{
unsigned olddecl_uid = DECL_UID (olddecl);
int olddecl_friend = 0, types_match = 0, hidden_friend = 0;
int new_defines_function = 0;
tree new_template_info;
if (newdecl == olddecl)
return olddecl;
types_match = decls_match (newdecl, olddecl);
/* If either the type of the new decl or the type of the old decl is an
error_mark_node, then that implies that we have already issued an
error (earlier) for some bogus type specification, and in that case,
it is rather pointless to harass the user with yet more error message
about the same declaration, so just pretend the types match here. */
if (TREE_TYPE (newdecl) == error_mark_node
|| TREE_TYPE (olddecl) == error_mark_node)
return error_mark_node;
if (DECL_P (olddecl)
&& TREE_CODE (newdecl) == FUNCTION_DECL
&& TREE_CODE (olddecl) == FUNCTION_DECL
&& (DECL_UNINLINABLE (newdecl) || DECL_UNINLINABLE (olddecl)))
{
if (DECL_DECLARED_INLINE_P (newdecl)
&& DECL_UNINLINABLE (newdecl)
&& lookup_attribute ("noinline", DECL_ATTRIBUTES (newdecl)))
/* Already warned elsewhere. */;
else if (DECL_DECLARED_INLINE_P (olddecl)
&& DECL_UNINLINABLE (olddecl)
&& lookup_attribute ("noinline", DECL_ATTRIBUTES (olddecl)))
/* Already warned. */;
else if (DECL_DECLARED_INLINE_P (newdecl)
&& DECL_UNINLINABLE (olddecl)
&& lookup_attribute ("noinline", DECL_ATTRIBUTES (olddecl)))
{
warning (OPT_Wattributes, "function %q+D redeclared as inline",
newdecl);
warning (OPT_Wattributes, "previous declaration of %q+D "
"with attribute noinline", olddecl);
}
else if (DECL_DECLARED_INLINE_P (olddecl)
&& DECL_UNINLINABLE (newdecl)
&& lookup_attribute ("noinline", DECL_ATTRIBUTES (newdecl)))
{
warning (OPT_Wattributes, "function %q+D redeclared with "
"attribute noinline", newdecl);
warning (OPT_Wattributes, "previous declaration of %q+D was inline",
olddecl);
}
}
/* Check for redeclaration and other discrepancies. */
if (TREE_CODE (olddecl) == FUNCTION_DECL
&& DECL_ARTIFICIAL (olddecl))
{
gcc_assert (!DECL_HIDDEN_FRIEND_P (olddecl));
if (TREE_CODE (newdecl) != FUNCTION_DECL)
{
/* Avoid warnings redeclaring built-ins which have not been
explicitly declared. */
if (DECL_ANTICIPATED (olddecl))
return NULL_TREE;
/* If you declare a built-in or predefined function name as static,
the old definition is overridden, but optionally warn this was a
bad choice of name. */
if (! TREE_PUBLIC (newdecl))
{
warning (OPT_Wshadow,
DECL_BUILT_IN (olddecl)
? G_("shadowing built-in function %q#D")
: G_("shadowing library function %q#D"), olddecl);
/* Discard the old built-in function. */
return NULL_TREE;
}
/* If the built-in is not ansi, then programs can override
it even globally without an error. */
else if (! DECL_BUILT_IN (olddecl))
warning (0, "library function %q#D redeclared as non-function %q#D",
olddecl, newdecl);
else
{
error ("declaration of %q#D", newdecl);
error ("conflicts with built-in declaration %q#D",
olddecl);
}
return NULL_TREE;
}
else if (!types_match)
{
/* Avoid warnings redeclaring built-ins which have not been
explicitly declared. */
if (DECL_ANTICIPATED (olddecl))
{
/* Deal with fileptr_type_node. FILE type is not known
at the time we create the builtins. */
tree t1, t2;
for (t1 = TYPE_ARG_TYPES (TREE_TYPE (newdecl)),
t2 = TYPE_ARG_TYPES (TREE_TYPE (olddecl));
t1 || t2;
t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2))
if (!t1 || !t2)
break;
else if (TREE_VALUE (t2) == fileptr_type_node)
{
tree t = TREE_VALUE (t1);
if (TREE_CODE (t) == POINTER_TYPE
&& TYPE_NAME (TREE_TYPE (t))
&& DECL_NAME (TYPE_NAME (TREE_TYPE (t)))
== get_identifier ("FILE")
&& compparms (TREE_CHAIN (t1), TREE_CHAIN (t2)))
{
tree oldargs = TYPE_ARG_TYPES (TREE_TYPE (olddecl));
TYPE_ARG_TYPES (TREE_TYPE (olddecl))
= TYPE_ARG_TYPES (TREE_TYPE (newdecl));
types_match = decls_match (newdecl, olddecl);
if (types_match)
return duplicate_decls (newdecl, olddecl,
newdecl_is_friend);
TYPE_ARG_TYPES (TREE_TYPE (olddecl)) = oldargs;
}
}
else if (! same_type_p (TREE_VALUE (t1), TREE_VALUE (t2)))
break;
}
else if ((DECL_EXTERN_C_P (newdecl)
&& DECL_EXTERN_C_P (olddecl))
|| compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)),
TYPE_ARG_TYPES (TREE_TYPE (olddecl))))
{
/* A near match; override the builtin. */
if (TREE_PUBLIC (newdecl))
{
warning (0, "new declaration %q#D", newdecl);
warning (0, "ambiguates built-in declaration %q#D",
olddecl);
}
else
warning (OPT_Wshadow,
DECL_BUILT_IN (olddecl)
? G_("shadowing built-in function %q#D")
: G_("shadowing library function %q#D"), olddecl);
}
else
/* Discard the old built-in function. */
return NULL_TREE;
/* Replace the old RTL to avoid problems with inlining. */
COPY_DECL_RTL (newdecl, olddecl);
}
/* Even if the types match, prefer the new declarations type for
built-ins which have not been explicitly declared, for
exception lists, etc... */
else if (DECL_IS_BUILTIN (olddecl))
{
tree type = TREE_TYPE (newdecl);
tree attribs = (*targetm.merge_type_attributes)
(TREE_TYPE (olddecl), type);
type = cp_build_type_attribute_variant (type, attribs);
TREE_TYPE (newdecl) = TREE_TYPE (olddecl) = type;
}
/* If a function is explicitly declared "throw ()", propagate that to
the corresponding builtin. */
if (DECL_BUILT_IN_CLASS (olddecl) == BUILT_IN_NORMAL
&& DECL_ANTICIPATED (olddecl)
&& TREE_NOTHROW (newdecl)
&& !TREE_NOTHROW (olddecl)
&& built_in_decls [DECL_FUNCTION_CODE (olddecl)] != NULL_TREE
&& built_in_decls [DECL_FUNCTION_CODE (olddecl)] != olddecl
&& types_match)
TREE_NOTHROW (built_in_decls [DECL_FUNCTION_CODE (olddecl)]) = 1;
/* Whether or not the builtin can throw exceptions has no
bearing on this declarator. */
TREE_NOTHROW (olddecl) = 0;
if (DECL_THIS_STATIC (newdecl) && !DECL_THIS_STATIC (olddecl))
{
/* If a builtin function is redeclared as `static', merge
the declarations, but make the original one static. */
DECL_THIS_STATIC (olddecl) = 1;
TREE_PUBLIC (olddecl) = 0;
/* Make the old declaration consistent with the new one so
that all remnants of the builtin-ness of this function
will be banished. */
SET_DECL_LANGUAGE (olddecl, DECL_LANGUAGE (newdecl));
COPY_DECL_RTL (newdecl, olddecl);
}
}
else if (TREE_CODE (olddecl) != TREE_CODE (newdecl))
{
/* C++ Standard, 3.3, clause 4:
"[Note: a namespace name or a class template name must be unique
in its declarative region (7.3.2, clause 14). ]" */
if (TREE_CODE (olddecl) != NAMESPACE_DECL
&& TREE_CODE (newdecl) != NAMESPACE_DECL
&& (TREE_CODE (olddecl) != TEMPLATE_DECL
|| TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) != TYPE_DECL)
&& (TREE_CODE (newdecl) != TEMPLATE_DECL
|| TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) != TYPE_DECL))
{
if ((TREE_CODE (olddecl) == TYPE_DECL && DECL_ARTIFICIAL (olddecl)
&& TREE_CODE (newdecl) != TYPE_DECL)
|| (TREE_CODE (newdecl) == TYPE_DECL && DECL_ARTIFICIAL (newdecl)
&& TREE_CODE (olddecl) != TYPE_DECL))
{
/* We do nothing special here, because C++ does such nasty
things with TYPE_DECLs. Instead, just let the TYPE_DECL
get shadowed, and know that if we need to find a TYPE_DECL
for a given name, we can look in the IDENTIFIER_TYPE_VALUE
slot of the identifier. */
return NULL_TREE;
}
if ((TREE_CODE (newdecl) == FUNCTION_DECL
&& DECL_FUNCTION_TEMPLATE_P (olddecl))
|| (TREE_CODE (olddecl) == FUNCTION_DECL
&& DECL_FUNCTION_TEMPLATE_P (newdecl)))
return NULL_TREE;
}
error ("%q#D redeclared as different kind of symbol", newdecl);
if (TREE_CODE (olddecl) == TREE_LIST)
olddecl = TREE_VALUE (olddecl);
error ("previous declaration of %q+#D", olddecl);
return error_mark_node;
}
else if (!types_match)
{
if (CP_DECL_CONTEXT (newdecl) != CP_DECL_CONTEXT (olddecl))
/* These are certainly not duplicate declarations; they're
from different scopes. */
return NULL_TREE;
if (TREE_CODE (newdecl) == TEMPLATE_DECL)
{
/* The name of a class template may not be declared to refer to
any other template, class, function, object, namespace, value,
or type in the same scope. */
if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == TYPE_DECL
|| TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
{
error ("declaration of template %q#D", newdecl);
error ("conflicts with previous declaration %q+#D", olddecl);
}
else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == FUNCTION_DECL
&& TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL
&& compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl))),
TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl))))
&& comp_template_parms (DECL_TEMPLATE_PARMS (newdecl),
DECL_TEMPLATE_PARMS (olddecl))
/* Template functions can be disambiguated by
return type. */
&& same_type_p (TREE_TYPE (TREE_TYPE (newdecl)),
TREE_TYPE (TREE_TYPE (olddecl))))
{
error ("new declaration %q#D", newdecl);
error ("ambiguates old declaration %q+#D", olddecl);
}
return NULL_TREE;
}
if (TREE_CODE (newdecl) == FUNCTION_DECL)
{
if (DECL_EXTERN_C_P (newdecl) && DECL_EXTERN_C_P (olddecl))
{
error ("declaration of C function %q#D conflicts with",
newdecl);
error ("previous declaration %q+#D here", olddecl);
return NULL_TREE;
}
else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)),
TYPE_ARG_TYPES (TREE_TYPE (olddecl))))
{
error ("new declaration %q#D", newdecl);
error ("ambiguates old declaration %q+#D", olddecl);
return error_mark_node;
}
else
return NULL_TREE;
}
else
{
error ("conflicting declaration %q#D", newdecl);
error ("%q+D has a previous declaration as %q#D", olddecl, olddecl);
return error_mark_node;
}
}
else if (TREE_CODE (newdecl) == FUNCTION_DECL
&& ((DECL_TEMPLATE_SPECIALIZATION (olddecl)
&& (!DECL_TEMPLATE_INFO (newdecl)
|| (DECL_TI_TEMPLATE (newdecl)
!= DECL_TI_TEMPLATE (olddecl))))
|| (DECL_TEMPLATE_SPECIALIZATION (newdecl)
&& (!DECL_TEMPLATE_INFO (olddecl)
|| (DECL_TI_TEMPLATE (olddecl)
!= DECL_TI_TEMPLATE (newdecl))))))
/* It's OK to have a template specialization and a non-template
with the same type, or to have specializations of two
different templates with the same type. Note that if one is a
specialization, and the other is an instantiation of the same
template, that we do not exit at this point. That situation
can occur if we instantiate a template class, and then
specialize one of its methods. This situation is valid, but
the declarations must be merged in the usual way. */
return NULL_TREE;
else if (TREE_CODE (newdecl) == FUNCTION_DECL
&& ((DECL_TEMPLATE_INSTANTIATION (olddecl)
&& !DECL_USE_TEMPLATE (newdecl))
|| (DECL_TEMPLATE_INSTANTIATION (newdecl)
&& !DECL_USE_TEMPLATE (olddecl))))
/* One of the declarations is a template instantiation, and the
other is not a template at all. That's OK. */
return NULL_TREE;
else if (TREE_CODE (newdecl) == NAMESPACE_DECL)
{
/* In [namespace.alias] we have:
In a declarative region, a namespace-alias-definition can be
used to redefine a namespace-alias declared in that declarative
region to refer only to the namespace to which it already
refers.
Therefore, if we encounter a second alias directive for the same
alias, we can just ignore the second directive. */
if (DECL_NAMESPACE_ALIAS (newdecl)
&& (DECL_NAMESPACE_ALIAS (newdecl)
== DECL_NAMESPACE_ALIAS (olddecl)))
return olddecl;
/* [namespace.alias]
A namespace-name or namespace-alias shall not be declared as
the name of any other entity in the same declarative region.
A namespace-name defined at global scope shall not be
declared as the name of any other entity in any global scope
of the program. */
error ("declaration of namespace %qD conflicts with", newdecl);
error ("previous declaration of namespace %q+D here", olddecl);
return error_mark_node;
}
else
{
const char *errmsg = redeclaration_error_message (newdecl, olddecl);
if (errmsg)
{
error_at (DECL_SOURCE_LOCATION (newdecl), errmsg, newdecl);
if (DECL_NAME (olddecl) != NULL_TREE)
error ((DECL_INITIAL (olddecl) && namespace_bindings_p ())
? "%q+#D previously defined here"
: "%q+#D previously declared here", olddecl);
return error_mark_node;
}
else if (TREE_CODE (olddecl) == FUNCTION_DECL
&& DECL_INITIAL (olddecl) != NULL_TREE
&& !prototype_p (TREE_TYPE (olddecl))
&& prototype_p (TREE_TYPE (newdecl)))
{
/* Prototype decl follows defn w/o prototype. */
warning_at (input_location, 0, "prototype for %q+#D", newdecl);
warning_at (DECL_SOURCE_LOCATION (olddecl), 0,
"follows non-prototype definition here");
}
else if ((TREE_CODE (olddecl) == FUNCTION_DECL
|| TREE_CODE (olddecl) == VAR_DECL)
&& DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl))
{
/* [dcl.link]
If two declarations of the same function or object
specify different linkage-specifications ..., the program
is ill-formed.... Except for functions with C++ linkage,
a function declaration without a linkage specification
shall not precede the first linkage specification for
that function. A function can be declared without a
linkage specification after an explicit linkage
specification has been seen; the linkage explicitly
specified in the earlier declaration is not affected by
such a function declaration.
DR 563 raises the question why the restrictions on
functions should not also apply to objects. Older
versions of G++ silently ignore the linkage-specification
for this example:
namespace N {
extern int i;
extern "C" int i;
}
which is clearly wrong. Therefore, we now treat objects
like functions. */
if (current_lang_depth () == 0)
{
/* There is no explicit linkage-specification, so we use
the linkage from the previous declaration. */
if (!DECL_LANG_SPECIFIC (newdecl))
retrofit_lang_decl (newdecl);
SET_DECL_LANGUAGE (newdecl, DECL_LANGUAGE (olddecl));
}
else
{
error ("previous declaration of %q+#D with %qL linkage",
olddecl, DECL_LANGUAGE (olddecl));
error ("conflicts with new declaration with %qL linkage",
DECL_LANGUAGE (newdecl));
}
}
if (DECL_LANG_SPECIFIC (olddecl) && DECL_USE_TEMPLATE (olddecl))
;
else if (TREE_CODE (olddecl) == FUNCTION_DECL)
{
tree t1 = TYPE_ARG_TYPES (TREE_TYPE (olddecl));
tree t2 = TYPE_ARG_TYPES (TREE_TYPE (newdecl));
int i = 1;
if (TREE_CODE (TREE_TYPE (newdecl)) == METHOD_TYPE)
t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2);
for (; t1 && t1 != void_list_node;
t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2), i++)
if (TREE_PURPOSE (t1) && TREE_PURPOSE (t2))
{
if (1 == simple_cst_equal (TREE_PURPOSE (t1),
TREE_PURPOSE (t2)))
{
permerror (input_location, "default argument given for parameter %d of %q#D",
i, newdecl);
permerror (input_location, "after previous specification in %q+#D", olddecl);
}
else
{
error ("default argument given for parameter %d of %q#D",
i, newdecl);
error ("after previous specification in %q+#D",
olddecl);
}
}
}
}
/* Do not merge an implicit typedef with an explicit one. In:
class A;
...
typedef class A A __attribute__ ((foo));
the attribute should apply only to the typedef. */
if (TREE_CODE (olddecl) == TYPE_DECL
&& (DECL_IMPLICIT_TYPEDEF_P (olddecl)
|| DECL_IMPLICIT_TYPEDEF_P (newdecl)))
return NULL_TREE;
/* If new decl is `static' and an `extern' was seen previously,
warn about it. */
warn_extern_redeclared_static (newdecl, olddecl);
if (!validate_constexpr_redeclaration (olddecl, newdecl))
return error_mark_node;
/* We have committed to returning 1 at this point. */
if (TREE_CODE (newdecl) == FUNCTION_DECL)
{
/* Now that functions must hold information normally held
by field decls, there is extra work to do so that
declaration information does not get destroyed during
definition. */
if (DECL_VINDEX (olddecl))
DECL_VINDEX (newdecl) = DECL_VINDEX (olddecl);
if (DECL_CONTEXT (olddecl))
DECL_CONTEXT (newdecl) = DECL_CONTEXT (olddecl);
DECL_STATIC_CONSTRUCTOR (newdecl) |= DECL_STATIC_CONSTRUCTOR (olddecl);
DECL_STATIC_DESTRUCTOR (newdecl) |= DECL_STATIC_DESTRUCTOR (olddecl);
DECL_PURE_VIRTUAL_P (newdecl) |= DECL_PURE_VIRTUAL_P (olddecl);
DECL_VIRTUAL_P (newdecl) |= DECL_VIRTUAL_P (olddecl);
DECL_INVALID_OVERRIDER_P (newdecl) |= DECL_INVALID_OVERRIDER_P (olddecl);
DECL_THIS_STATIC (newdecl) |= DECL_THIS_STATIC (olddecl);
if (DECL_OVERLOADED_OPERATOR_P (olddecl) != ERROR_MARK)
SET_OVERLOADED_OPERATOR_CODE
(newdecl, DECL_OVERLOADED_OPERATOR_P (olddecl));
new_defines_function = DECL_INITIAL (newdecl) != NULL_TREE;
/* Optionally warn about more than one declaration for the same
name, but don't warn about a function declaration followed by a
definition. */
if (warn_redundant_decls && ! DECL_ARTIFICIAL (olddecl)
&& !(new_defines_function && DECL_INITIAL (olddecl) == NULL_TREE)
/* Don't warn about extern decl followed by definition. */
&& !(DECL_EXTERNAL (olddecl) && ! DECL_EXTERNAL (newdecl))
/* Don't warn about friends, let add_friend take care of it. */
&& ! (newdecl_is_friend || DECL_FRIEND_P (olddecl)))
{
warning (OPT_Wredundant_decls, "redundant redeclaration of %qD in same scope", newdecl);
warning (OPT_Wredundant_decls, "previous declaration of %q+D", olddecl);
}
if (DECL_DELETED_FN (newdecl))
{
error ("deleted definition of %qD", newdecl);
error ("after previous declaration %q+D", olddecl);
}
}
/* Deal with C++: must preserve virtual function table size. */
if (TREE_CODE (olddecl) == TYPE_DECL)
{
tree newtype = TREE_TYPE (newdecl);
tree oldtype = TREE_TYPE (olddecl);
if (newtype != error_mark_node && oldtype != error_mark_node
&& TYPE_LANG_SPECIFIC (newtype) && TYPE_LANG_SPECIFIC (oldtype))
CLASSTYPE_FRIEND_CLASSES (newtype)
= CLASSTYPE_FRIEND_CLASSES (oldtype);
DECL_ORIGINAL_TYPE (newdecl) = DECL_ORIGINAL_TYPE (olddecl);
}
/* Copy all the DECL_... slots specified in the new decl
except for any that we copy here from the old type. */
DECL_ATTRIBUTES (newdecl)
= (*targetm.merge_decl_attributes) (olddecl, newdecl);
if (TREE_CODE (newdecl) == TEMPLATE_DECL)
{
tree old_result;
tree new_result;
old_result = DECL_TEMPLATE_RESULT (olddecl);
new_result = DECL_TEMPLATE_RESULT (newdecl);
TREE_TYPE (olddecl) = TREE_TYPE (old_result);
DECL_TEMPLATE_SPECIALIZATIONS (olddecl)
= chainon (DECL_TEMPLATE_SPECIALIZATIONS (olddecl),
DECL_TEMPLATE_SPECIALIZATIONS (newdecl));
DECL_ATTRIBUTES (old_result)
= (*targetm.merge_decl_attributes) (old_result, new_result);
if (DECL_FUNCTION_TEMPLATE_P (newdecl))
{
if (GNU_INLINE_P (old_result) != GNU_INLINE_P (new_result)
&& DECL_INITIAL (new_result))
{
if (DECL_INITIAL (old_result))
DECL_UNINLINABLE (old_result) = 1;
else
DECL_UNINLINABLE (old_result) = DECL_UNINLINABLE (new_result);
DECL_EXTERNAL (old_result) = DECL_EXTERNAL (new_result);
DECL_NOT_REALLY_EXTERN (old_result)
= DECL_NOT_REALLY_EXTERN (new_result);
DECL_INTERFACE_KNOWN (old_result)
= DECL_INTERFACE_KNOWN (new_result);
DECL_DECLARED_INLINE_P (old_result)
= DECL_DECLARED_INLINE_P (new_result);
DECL_DISREGARD_INLINE_LIMITS (old_result)
|= DECL_DISREGARD_INLINE_LIMITS (new_result);
}
else
{
DECL_DECLARED_INLINE_P (old_result)
|= DECL_DECLARED_INLINE_P (new_result);
DECL_DISREGARD_INLINE_LIMITS (old_result)
|= DECL_DISREGARD_INLINE_LIMITS (new_result);
check_redeclaration_exception_specification (newdecl, olddecl);
}
}
/* If the new declaration is a definition, update the file and
line information on the declaration, and also make
the old declaration the same definition. */
if (DECL_INITIAL (new_result) != NULL_TREE)
{
DECL_SOURCE_LOCATION (olddecl)
= DECL_SOURCE_LOCATION (old_result)
= DECL_SOURCE_LOCATION (newdecl);
DECL_INITIAL (old_result) = DECL_INITIAL (new_result);
if (DECL_FUNCTION_TEMPLATE_P (newdecl))
{
tree parm;
DECL_ARGUMENTS (old_result)
= DECL_ARGUMENTS (new_result);
for (parm = DECL_ARGUMENTS (old_result); parm;
parm = DECL_CHAIN (parm))
DECL_CONTEXT (parm) = old_result;
}
}
return olddecl;
}
if (types_match)
{
/* Automatically handles default parameters. */
tree oldtype = TREE_TYPE (olddecl);
tree newtype;
/* Merge the data types specified in the two decls. */
newtype = merge_types (TREE_TYPE (newdecl), TREE_TYPE (olddecl));
/* If merge_types produces a non-typedef type, just use the old type. */
if (TREE_CODE (newdecl) == TYPE_DECL
&& newtype == DECL_ORIGINAL_TYPE (newdecl))
newtype = oldtype;
if (TREE_CODE (newdecl) == VAR_DECL)
{
DECL_THIS_EXTERN (newdecl) |= DECL_THIS_EXTERN (olddecl);
DECL_INITIALIZED_P (newdecl) |= DECL_INITIALIZED_P (olddecl);
DECL_NONTRIVIALLY_INITIALIZED_P (newdecl)
|= DECL_NONTRIVIALLY_INITIALIZED_P (olddecl);
DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (newdecl)
|= DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (olddecl);
/* Merge the threadprivate attribute from OLDDECL into NEWDECL. */
if (DECL_LANG_SPECIFIC (olddecl)
&& CP_DECL_THREADPRIVATE_P (olddecl))
{
/* Allocate a LANG_SPECIFIC structure for NEWDECL, if needed. */
if (!DECL_LANG_SPECIFIC (newdecl))
retrofit_lang_decl (newdecl);
DECL_TLS_MODEL (newdecl) = DECL_TLS_MODEL (olddecl);
CP_DECL_THREADPRIVATE_P (newdecl) = 1;
}
}
/* Do this after calling `merge_types' so that default
parameters don't confuse us. */
else if (TREE_CODE (newdecl) == FUNCTION_DECL)
check_redeclaration_exception_specification (newdecl, olddecl);
TREE_TYPE (newdecl) = TREE_TYPE (olddecl) = newtype;
if (TREE_CODE (newdecl) == FUNCTION_DECL)
check_default_args (newdecl);
/* Lay the type out, unless already done. */
if (! same_type_p (newtype, oldtype)
&& TREE_TYPE (newdecl) != error_mark_node
&& !(processing_template_decl && uses_template_parms (newdecl)))
layout_type (TREE_TYPE (newdecl));
if ((TREE_CODE (newdecl) == VAR_DECL
|| TREE_CODE (newdecl) == PARM_DECL
|| TREE_CODE (newdecl) == RESULT_DECL
|| TREE_CODE (newdecl) == FIELD_DECL
|| TREE_CODE (newdecl) == TYPE_DECL)
&& !(processing_template_decl && uses_template_parms (newdecl)))
layout_decl (newdecl, 0);
/* Merge the type qualifiers. */
if (TREE_READONLY (newdecl))
TREE_READONLY (olddecl) = 1;
if (TREE_THIS_VOLATILE (newdecl))
TREE_THIS_VOLATILE (olddecl) = 1;
if (TREE_NOTHROW (newdecl))
TREE_NOTHROW (olddecl) = 1;
/* Merge deprecatedness. */
if (TREE_DEPRECATED (newdecl))
TREE_DEPRECATED (olddecl) = 1;
/* Preserve function specific target and optimization options */
if (TREE_CODE (newdecl) == FUNCTION_DECL)
{
if (DECL_FUNCTION_SPECIFIC_TARGET (olddecl)
&& !DECL_FUNCTION_SPECIFIC_TARGET (newdecl))
DECL_FUNCTION_SPECIFIC_TARGET (newdecl)
= DECL_FUNCTION_SPECIFIC_TARGET (olddecl);
if (DECL_FUNCTION_SPECIFIC_OPTIMIZATION (olddecl)
&& !DECL_FUNCTION_SPECIFIC_OPTIMIZATION (newdecl))
DECL_FUNCTION_SPECIFIC_OPTIMIZATION (newdecl)
= DECL_FUNCTION_SPECIFIC_OPTIMIZATION (olddecl);
}
/* Merge the initialization information. */
if (DECL_INITIAL (newdecl) == NULL_TREE
&& DECL_INITIAL (olddecl) != NULL_TREE)
{
DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
DECL_SOURCE_LOCATION (newdecl) = DECL_SOURCE_LOCATION (olddecl);
if (TREE_CODE (newdecl) == FUNCTION_DECL)
{
DECL_SAVED_TREE (newdecl) = DECL_SAVED_TREE (olddecl);
DECL_STRUCT_FUNCTION (newdecl) = DECL_STRUCT_FUNCTION (olddecl);
}
}
/* Merge the section attribute.
We want to issue an error if the sections conflict but that must be
done later in decl_attributes since we are called before attributes
are assigned. */
if (DECL_SECTION_NAME (newdecl) == NULL_TREE)
DECL_SECTION_NAME (newdecl) = DECL_SECTION_NAME (olddecl);
if (TREE_CODE (newdecl) == FUNCTION_DECL)
{
DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (newdecl)
|= DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (olddecl);
DECL_NO_LIMIT_STACK (newdecl) |= DECL_NO_LIMIT_STACK (olddecl);
TREE_THIS_VOLATILE (newdecl) |= TREE_THIS_VOLATILE (olddecl);
TREE_NOTHROW (newdecl) |= TREE_NOTHROW (olddecl);
DECL_IS_MALLOC (newdecl) |= DECL_IS_MALLOC (olddecl);
DECL_IS_OPERATOR_NEW (newdecl) |= DECL_IS_OPERATOR_NEW (olddecl);
DECL_PURE_P (newdecl) |= DECL_PURE_P (olddecl);
TREE_READONLY (newdecl) |= TREE_READONLY (olddecl);
DECL_LOOPING_CONST_OR_PURE_P (newdecl)
|= DECL_LOOPING_CONST_OR_PURE_P (olddecl);
/* Keep the old RTL. */
COPY_DECL_RTL (olddecl, newdecl);
}
else if (TREE_CODE (newdecl) == VAR_DECL
&& (DECL_SIZE (olddecl) || !DECL_SIZE (newdecl)))
{
/* Keep the old RTL. We cannot keep the old RTL if the old
declaration was for an incomplete object and the new
declaration is not since many attributes of the RTL will
change. */
COPY_DECL_RTL (olddecl, newdecl);
}
}
/* If cannot merge, then use the new type and qualifiers,
and don't preserve the old rtl. */
else
{
/* Clean out any memory we had of the old declaration. */
tree oldstatic = value_member (olddecl, static_aggregates);
if (oldstatic)
TREE_VALUE (oldstatic) = error_mark_node;
TREE_TYPE (olddecl) = TREE_TYPE (newdecl);
TREE_READONLY (olddecl) = TREE_READONLY (newdecl);
TREE_THIS_VOLATILE (olddecl) = TREE_THIS_VOLATILE (newdecl);
TREE_SIDE_EFFECTS (olddecl) = TREE_SIDE_EFFECTS (newdecl);
}
/* Merge the storage class information. */
merge_weak (newdecl, olddecl);
if (DECL_ONE_ONLY (olddecl))
DECL_COMDAT_GROUP (newdecl) = DECL_COMDAT_GROUP (olddecl);
DECL_DEFER_OUTPUT (newdecl) |= DECL_DEFER_OUTPUT (olddecl);
TREE_PUBLIC (newdecl) = TREE_PUBLIC (olddecl);
TREE_STATIC (olddecl) = TREE_STATIC (newdecl) |= TREE_STATIC (olddecl);
if (! DECL_EXTERNAL (olddecl))
DECL_EXTERNAL (newdecl) = 0;
new_template_info = NULL_TREE;
if (DECL_LANG_SPECIFIC (newdecl) && DECL_LANG_SPECIFIC (olddecl))
{
bool new_redefines_gnu_inline = false;
if (new_defines_function
&& ((DECL_INTERFACE_KNOWN (olddecl)
&& TREE_CODE (olddecl) == FUNCTION_DECL)
|| (TREE_CODE (olddecl) == TEMPLATE_DECL
&& (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl))
== FUNCTION_DECL))))
{
tree fn = olddecl;
if (TREE_CODE (fn) == TEMPLATE_DECL)
fn = DECL_TEMPLATE_RESULT (olddecl);
new_redefines_gnu_inline = GNU_INLINE_P (fn) && DECL_INITIAL (fn);
}
if (!new_redefines_gnu_inline)
{
DECL_INTERFACE_KNOWN (newdecl) |= DECL_INTERFACE_KNOWN (olddecl);
DECL_NOT_REALLY_EXTERN (newdecl) |= DECL_NOT_REALLY_EXTERN (olddecl);
DECL_COMDAT (newdecl) |= DECL_COMDAT (olddecl);
}
DECL_TEMPLATE_INSTANTIATED (newdecl)
|= DECL_TEMPLATE_INSTANTIATED (olddecl);
DECL_ODR_USED (newdecl) |= DECL_ODR_USED (olddecl);
/* If the OLDDECL is an instantiation and/or specialization,
then the NEWDECL must be too. But, it may not yet be marked
as such if the caller has created NEWDECL, but has not yet
figured out that it is a redeclaration. */
if (!DECL_USE_TEMPLATE (newdecl))
DECL_USE_TEMPLATE (newdecl) = DECL_USE_TEMPLATE (olddecl);
/* Don't really know how much of the language-specific
values we should copy from old to new. */
DECL_IN_AGGR_P (newdecl) = DECL_IN_AGGR_P (olddecl);
DECL_REPO_AVAILABLE_P (newdecl) = DECL_REPO_AVAILABLE_P (olddecl);
DECL_INITIALIZED_IN_CLASS_P (newdecl)
|= DECL_INITIALIZED_IN_CLASS_P (olddecl);
if (LANG_DECL_HAS_MIN (newdecl))
{
DECL_LANG_SPECIFIC (newdecl)->u.min.u2 =
DECL_LANG_SPECIFIC (olddecl)->u.min.u2;
if (DECL_TEMPLATE_INFO (newdecl))
new_template_info = DECL_TEMPLATE_INFO (newdecl);
DECL_TEMPLATE_INFO (newdecl) = DECL_TEMPLATE_INFO (olddecl);
}
/* Only functions have these fields. */
if (TREE_CODE (newdecl) == FUNCTION_DECL
|| DECL_FUNCTION_TEMPLATE_P (newdecl))
{
DECL_NONCONVERTING_P (newdecl) = DECL_NONCONVERTING_P (olddecl);
olddecl_friend = DECL_FRIEND_P (olddecl);
hidden_friend = (DECL_ANTICIPATED (olddecl)
&& DECL_HIDDEN_FRIEND_P (olddecl)
&& newdecl_is_friend);
DECL_BEFRIENDING_CLASSES (newdecl)
= chainon (DECL_BEFRIENDING_CLASSES (newdecl),
DECL_BEFRIENDING_CLASSES (olddecl));
/* DECL_THUNKS is only valid for virtual functions,
otherwise it is a DECL_FRIEND_CONTEXT. */
if (DECL_VIRTUAL_P (newdecl))
DECL_THUNKS (newdecl) = DECL_THUNKS (olddecl);
}
/* Only variables have this field. */
else if (TREE_CODE (newdecl) == VAR_DECL
&& VAR_HAD_UNKNOWN_BOUND (olddecl))
SET_VAR_HAD_UNKNOWN_BOUND (newdecl);
}
if (TREE_CODE (newdecl) == FUNCTION_DECL)
{
tree parm;
/* Merge parameter attributes. */
tree oldarg, newarg;
for (oldarg = DECL_ARGUMENTS(olddecl),
newarg = DECL_ARGUMENTS(newdecl);
oldarg && newarg;
oldarg = DECL_CHAIN(oldarg), newarg = DECL_CHAIN(newarg)) {
DECL_ATTRIBUTES (newarg)
= (*targetm.merge_decl_attributes) (oldarg, newarg);
DECL_ATTRIBUTES (oldarg) = DECL_ATTRIBUTES (newarg);
}
if (DECL_TEMPLATE_INSTANTIATION (olddecl)
&& !DECL_TEMPLATE_INSTANTIATION (newdecl))
{
/* If newdecl is not a specialization, then it is not a
template-related function at all. And that means that we
should have exited above, returning 0. */
gcc_assert (DECL_TEMPLATE_SPECIALIZATION (newdecl));
if (DECL_ODR_USED (olddecl))
/* From [temp.expl.spec]:
If a template, a member template or the member of a class
template is explicitly specialized then that
specialization shall be declared before the first use of
that specialization that would cause an implicit
instantiation to take place, in every translation unit in
which such a use occurs. */
error ("explicit specialization of %qD after first use",
olddecl);
SET_DECL_TEMPLATE_SPECIALIZATION (olddecl);
/* Don't propagate visibility from the template to the
specialization here. We'll do that in determine_visibility if
appropriate. */
DECL_VISIBILITY_SPECIFIED (olddecl) = 0;
/* [temp.expl.spec/14] We don't inline explicit specialization
just because the primary template says so. */
/* But still keep DECL_DISREGARD_INLINE_LIMITS in sync with
the always_inline attribute. */
if (DECL_DISREGARD_INLINE_LIMITS (olddecl)
&& !DECL_DISREGARD_INLINE_LIMITS (newdecl))
{
if (DECL_DECLARED_INLINE_P (newdecl))
DECL_DISREGARD_INLINE_LIMITS (newdecl) = true;
else
DECL_ATTRIBUTES (newdecl)
= remove_attribute ("always_inline",
DECL_ATTRIBUTES (newdecl));
}
}
else if (new_defines_function && DECL_INITIAL (olddecl))
{
/* Never inline re-defined extern inline functions.
FIXME: this could be better handled by keeping both
function as separate declarations. */
DECL_UNINLINABLE (newdecl) = 1;
}
else
{
if (DECL_PENDING_INLINE_INFO (newdecl) == 0)
DECL_PENDING_INLINE_INFO (newdecl) = DECL_PENDING_INLINE_INFO (olddecl);
DECL_DECLARED_INLINE_P (newdecl) |= DECL_DECLARED_INLINE_P (olddecl);
DECL_UNINLINABLE (newdecl) = DECL_UNINLINABLE (olddecl)
= (DECL_UNINLINABLE (newdecl) || DECL_UNINLINABLE (olddecl));
DECL_DISREGARD_INLINE_LIMITS (newdecl)
= DECL_DISREGARD_INLINE_LIMITS (olddecl)
= (DECL_DISREGARD_INLINE_LIMITS (newdecl)
|| DECL_DISREGARD_INLINE_LIMITS (olddecl));
}
/* Preserve abstractness on cloned [cd]tors. */
DECL_ABSTRACT (newdecl) = DECL_ABSTRACT (olddecl);
/* Update newdecl's parms to point at olddecl. */
for (parm = DECL_ARGUMENTS (newdecl); parm;
parm = DECL_CHAIN (parm))
DECL_CONTEXT (parm) = olddecl;
if (! types_match)
{
SET_DECL_LANGUAGE (olddecl, DECL_LANGUAGE (newdecl));
COPY_DECL_ASSEMBLER_NAME (newdecl, olddecl);
COPY_DECL_RTL (newdecl, olddecl);
}
if (! types_match || new_defines_function)
{
/* These need to be copied so that the names are available.
Note that if the types do match, we'll preserve inline
info and other bits, but if not, we won't. */
DECL_ARGUMENTS (olddecl) = DECL_ARGUMENTS (newdecl);
DECL_RESULT (olddecl) = DECL_RESULT (newdecl);
}
if (new_defines_function)
/* If defining a function declared with other language
linkage, use the previously declared language linkage. */
SET_DECL_LANGUAGE (newdecl, DECL_LANGUAGE (olddecl));
else if (types_match)
{
/* If redeclaring a builtin function, and not a definition,
it stays built in. */
if (DECL_BUILT_IN (olddecl))
{
DECL_BUILT_IN_CLASS (newdecl) = DECL_BUILT_IN_CLASS (olddecl);
DECL_FUNCTION_CODE (newdecl) = DECL_FUNCTION_CODE (olddecl);
/* If we're keeping the built-in definition, keep the rtl,
regardless of declaration matches. */
COPY_DECL_RTL (olddecl, newdecl);
}
DECL_RESULT (newdecl) = DECL_RESULT (olddecl);
/* Don't clear out the arguments if we're just redeclaring a
function. */
if (DECL_ARGUMENTS (olddecl))
DECL_ARGUMENTS (newdecl) = DECL_ARGUMENTS (olddecl);
}
}
else if (TREE_CODE (newdecl) == NAMESPACE_DECL)
NAMESPACE_LEVEL (newdecl) = NAMESPACE_LEVEL (olddecl);
/* Now preserve various other info from the definition. */
TREE_ADDRESSABLE (newdecl) = TREE_ADDRESSABLE (olddecl);
TREE_ASM_WRITTEN (newdecl) = TREE_ASM_WRITTEN (olddecl);
DECL_COMMON (newdecl) = DECL_COMMON (olddecl);
COPY_DECL_ASSEMBLER_NAME (olddecl, newdecl);
/* Warn about conflicting visibility specifications. */
if (DECL_VISIBILITY_SPECIFIED (olddecl)
&& DECL_VISIBILITY_SPECIFIED (newdecl)
&& DECL_VISIBILITY (newdecl) != DECL_VISIBILITY (olddecl))
{
warning_at (input_location, OPT_Wattributes,
"%q+D: visibility attribute ignored because it", newdecl);
warning_at (DECL_SOURCE_LOCATION (olddecl), OPT_Wattributes,
"conflicts with previous declaration here");
}
/* Choose the declaration which specified visibility. */
if (DECL_VISIBILITY_SPECIFIED (olddecl))
{
DECL_VISIBILITY (newdecl) = DECL_VISIBILITY (olddecl);
DECL_VISIBILITY_SPECIFIED (newdecl) = 1;
}
/* Init priority used to be merged from newdecl to olddecl by the memcpy,
so keep this behavior. */
if (TREE_CODE (newdecl) == VAR_DECL && DECL_HAS_INIT_PRIORITY_P (newdecl))
{
SET_DECL_INIT_PRIORITY (olddecl, DECL_INIT_PRIORITY (newdecl));
DECL_HAS_INIT_PRIORITY_P (olddecl) = 1;
}
/* Likewise for DECL_USER_ALIGN and DECL_PACKED. */
DECL_USER_ALIGN (olddecl) = DECL_USER_ALIGN (newdecl);
if (TREE_CODE (newdecl) == FIELD_DECL)
DECL_PACKED (olddecl) = DECL_PACKED (newdecl);
/* The DECL_LANG_SPECIFIC information in OLDDECL will be replaced
with that from NEWDECL below. */
if (DECL_LANG_SPECIFIC (olddecl))
{
gcc_assert (DECL_LANG_SPECIFIC (olddecl)
!= DECL_LANG_SPECIFIC (newdecl));
ggc_free (DECL_LANG_SPECIFIC (olddecl));
}
/* Merge the USED information. */
if (TREE_USED (olddecl))
TREE_USED (newdecl) = 1;
else if (TREE_USED (newdecl))
TREE_USED (olddecl) = 1;
if (TREE_CODE (newdecl) == VAR_DECL)
{
if (DECL_READ_P (olddecl))
DECL_READ_P (newdecl) = 1;
else if (DECL_READ_P (newdecl))
DECL_READ_P (olddecl) = 1;
}
if (DECL_PRESERVE_P (olddecl))
DECL_PRESERVE_P (newdecl) = 1;
else if (DECL_PRESERVE_P (newdecl))
DECL_PRESERVE_P (olddecl) = 1;
if (TREE_CODE (newdecl) == FUNCTION_DECL)
{
int function_size;
function_size = sizeof (struct tree_decl_common);
memcpy ((char *) olddecl + sizeof (struct tree_common),
(char *) newdecl + sizeof (struct tree_common),
function_size - sizeof (struct tree_common));
memcpy ((char *) olddecl + sizeof (struct tree_decl_common),
(char *) newdecl + sizeof (struct tree_decl_common),
sizeof (struct tree_function_decl) - sizeof (struct tree_decl_common));
if (new_template_info)
/* If newdecl is a template instantiation, it is possible that
the following sequence of events has occurred:
o A friend function was declared in a class template. The
class template was instantiated.
o The instantiation of the friend declaration was
recorded on the instantiation list, and is newdecl.
o Later, however, instantiate_class_template called pushdecl
on the newdecl to perform name injection. But, pushdecl in
turn called duplicate_decls when it discovered that another
declaration of a global function with the same name already
existed.
o Here, in duplicate_decls, we decided to clobber newdecl.
If we're going to do that, we'd better make sure that
olddecl, and not newdecl, is on the list of
instantiations so that if we try to do the instantiation
again we won't get the clobbered declaration. */
reregister_specialization (newdecl,
new_template_info,
olddecl);
}
else
{
size_t size = tree_code_size (TREE_CODE (olddecl));
memcpy ((char *) olddecl + sizeof (struct tree_common),
(char *) newdecl + sizeof (struct tree_common),
sizeof (struct tree_decl_common) - sizeof (struct tree_common));
switch (TREE_CODE (olddecl))
{
case LABEL_DECL:
case VAR_DECL:
case RESULT_DECL:
case PARM_DECL:
case FIELD_DECL:
case TYPE_DECL:
case CONST_DECL:
{
memcpy ((char *) olddecl + sizeof (struct tree_decl_common),
(char *) newdecl + sizeof (struct tree_decl_common),
size - sizeof (struct tree_decl_common)
+ TREE_CODE_LENGTH (TREE_CODE (newdecl)) * sizeof (char *));
}
break;
default:
memcpy ((char *) olddecl + sizeof (struct tree_decl_common),
(char *) newdecl + sizeof (struct tree_decl_common),
sizeof (struct tree_decl_non_common) - sizeof (struct tree_decl_common)
+ TREE_CODE_LENGTH (TREE_CODE (newdecl)) * sizeof (char *));
break;
}
}
DECL_UID (olddecl) = olddecl_uid;
if (olddecl_friend)
DECL_FRIEND_P (olddecl) = 1;
if (hidden_friend)
{
DECL_ANTICIPATED (olddecl) = 1;
DECL_HIDDEN_FRIEND_P (olddecl) = 1;
}
/* NEWDECL contains the merged attribute lists.
Update OLDDECL to be the same. */
DECL_ATTRIBUTES (olddecl) = DECL_ATTRIBUTES (newdecl);
/* If OLDDECL had its DECL_RTL instantiated, re-invoke make_decl_rtl
so that encode_section_info has a chance to look at the new decl
flags and attributes. */
if (DECL_RTL_SET_P (olddecl)
&& (TREE_CODE (olddecl) == FUNCTION_DECL
|| (TREE_CODE (olddecl) == VAR_DECL
&& TREE_STATIC (olddecl))))
make_decl_rtl (olddecl);
/* The NEWDECL will no longer be needed. Because every out-of-class
declaration of a member results in a call to duplicate_decls,
freeing these nodes represents in a significant savings. */
ggc_free (newdecl);
return olddecl;
}
/* Return zero if the declaration NEWDECL is valid
when the declaration OLDDECL (assumed to be for the same name)
has already been seen.
Otherwise return an error message format string with a %s
where the identifier should go. */
static const char *
redeclaration_error_message (tree newdecl, tree olddecl)
{
if (TREE_CODE (newdecl) == TYPE_DECL)
{
/* Because C++ can put things into name space for free,
constructs like "typedef struct foo { ... } foo"
would look like an erroneous redeclaration. */
if (same_type_p (TREE_TYPE (newdecl), TREE_TYPE (olddecl)))
return NULL;
else
return G_("redefinition of %q#D");
}
else if (TREE_CODE (newdecl) == FUNCTION_DECL)
{
/* If this is a pure function, its olddecl will actually be
the original initialization to `0' (which we force to call
abort()). Don't complain about redefinition in this case. */
if (DECL_LANG_SPECIFIC (olddecl) && DECL_PURE_VIRTUAL_P (olddecl)
&& DECL_INITIAL (olddecl) == NULL_TREE)
return NULL;
/* If both functions come from different namespaces, this is not
a redeclaration - this is a conflict with a used function. */
if (DECL_NAMESPACE_SCOPE_P (olddecl)
&& DECL_CONTEXT (olddecl) != DECL_CONTEXT (newdecl)
&& ! decls_match (olddecl, newdecl))
return G_("%qD conflicts with used function");
/* We'll complain about linkage mismatches in
warn_extern_redeclared_static. */
/* Defining the same name twice is no good. */
if (DECL_INITIAL (olddecl) != NULL_TREE
&& DECL_INITIAL (newdecl) != NULL_TREE)
{
if (DECL_NAME (olddecl) == NULL_TREE)
return G_("%q#D not declared in class");
else if (!GNU_INLINE_P (olddecl)
|| GNU_INLINE_P (newdecl))
return G_("redefinition of %q#D");
}
if (DECL_DECLARED_INLINE_P (olddecl) && DECL_DECLARED_INLINE_P (newdecl))
{
bool olda = GNU_INLINE_P (olddecl);
bool newa = GNU_INLINE_P (newdecl);
if (olda != newa)
{
if (newa)
return G_("%q+D redeclared inline with "
"%<gnu_inline%> attribute");
else
return G_("%q+D redeclared inline without "
"%<gnu_inline%> attribute");
}
}
return NULL;
}
else if (TREE_CODE (newdecl) == TEMPLATE_DECL)
{
tree nt, ot;
if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
{
if (COMPLETE_TYPE_P (TREE_TYPE (newdecl))
&& COMPLETE_TYPE_P (TREE_TYPE (olddecl)))
return G_("redefinition of %q#D");
return NULL;
}
if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) != FUNCTION_DECL
|| (DECL_TEMPLATE_RESULT (newdecl)
== DECL_TEMPLATE_RESULT (olddecl)))
return NULL;
nt = DECL_TEMPLATE_RESULT (newdecl);
if (DECL_TEMPLATE_INFO (nt))
nt = DECL_TEMPLATE_RESULT (template_for_substitution (nt));
ot = DECL_TEMPLATE_RESULT (olddecl);
if (DECL_TEMPLATE_INFO (ot))
ot = DECL_TEMPLATE_RESULT (template_for_substitution (ot));
if (DECL_INITIAL (nt) && DECL_INITIAL (ot)
&& (!GNU_INLINE_P (ot) || GNU_INLINE_P (nt)))
return G_("redefinition of %q#D");
if (DECL_DECLARED_INLINE_P (ot) && DECL_DECLARED_INLINE_P (nt))
{
bool olda = GNU_INLINE_P (ot);
bool newa = GNU_INLINE_P (nt);
if (olda != newa)
{
if (newa)
return G_("%q+D redeclared inline with "
"%<gnu_inline%> attribute");
else
return G_("%q+D redeclared inline without "
"%<gnu_inline%> attribute");
}
}
/* Core issue #226 (C++0x):
If a friend function template declaration specifies a
default template-argument, that declaration shall be a
definition and shall be the only declaration of the
function template in the translation unit. */
if ((cxx_dialect != cxx98)
&& TREE_CODE (ot) == FUNCTION_DECL && DECL_FRIEND_P (ot)
&& !check_default_tmpl_args (nt, DECL_TEMPLATE_PARMS (newdecl),
/*is_primary=*/1, /*is_partial=*/0,
/*is_friend_decl=*/2))
return G_("redeclaration of friend %q#D "
"may not have default template arguments");
return NULL;
}
else if (TREE_CODE (newdecl) == VAR_DECL
&& DECL_THREAD_LOCAL_P (newdecl) != DECL_THREAD_LOCAL_P (olddecl)
&& (! DECL_LANG_SPECIFIC (olddecl)
|| ! CP_DECL_THREADPRIVATE_P (olddecl)
|| DECL_THREAD_LOCAL_P (newdecl)))
{
/* Only variables can be thread-local, and all declarations must
agree on this property. */
if (DECL_THREAD_LOCAL_P (newdecl))
return G_("thread-local declaration of %q#D follows "
"non-thread-local declaration");
else
return G_("non-thread-local declaration of %q#D follows "
"thread-local declaration");
}
else if (toplevel_bindings_p () || DECL_NAMESPACE_SCOPE_P (newdecl))
{
/* The objects have been declared at namespace scope. If either
is a member of an anonymous union, then this is an invalid
redeclaration. For example:
int i;
union { int i; };
is invalid. */
if ((TREE_CODE (newdecl) == VAR_DECL && DECL_ANON_UNION_VAR_P (newdecl))
|| (TREE_CODE (olddecl) == VAR_DECL && DECL_ANON_UNION_VAR_P (olddecl)))
return G_("redeclaration of %q#D");
/* If at least one declaration is a reference, there is no
conflict. For example:
int i = 3;
extern int i;
is valid. */
if (DECL_EXTERNAL (newdecl) || DECL_EXTERNAL (olddecl))
return NULL;
/* Reject two definitions. */
return G_("redefinition of %q#D");
}
else
{
/* Objects declared with block scope: */
/* Reject two definitions, and reject a definition
together with an external reference. */
if (!(DECL_EXTERNAL (newdecl) && DECL_EXTERNAL (olddecl)))
return G_("redeclaration of %q#D");
return NULL;
}
}
/* Hash and equality functions for the named_label table. */
static hashval_t
named_label_entry_hash (const void *data)
{
const struct named_label_entry *ent = (const struct named_label_entry *) data;
return DECL_UID (ent->label_decl);
}
static int
named_label_entry_eq (const void *a, const void *b)
{
const struct named_label_entry *ent_a = (const struct named_label_entry *) a;
const struct named_label_entry *ent_b = (const struct named_label_entry *) b;
return ent_a->label_decl == ent_b->label_decl;
}
/* Create a new label, named ID. */
static tree
make_label_decl (tree id, int local_p)
{
struct named_label_entry *ent;
void **slot;
tree decl;
decl = build_decl (input_location, LABEL_DECL, id, void_type_node);
DECL_CONTEXT (decl) = current_function_decl;
DECL_MODE (decl) = VOIDmode;
C_DECLARED_LABEL_FLAG (decl) = local_p;
/* Say where one reference is to the label, for the sake of the
error if it is not defined. */
DECL_SOURCE_LOCATION (decl) = input_location;
/* Record the fact that this identifier is bound to this label. */
SET_IDENTIFIER_LABEL_VALUE (id, decl);
/* Create the label htab for the function on demand. */
if (!named_labels)
named_labels = htab_create_ggc (13, named_label_entry_hash,
named_label_entry_eq, NULL);
/* Record this label on the list of labels used in this function.
We do this before calling make_label_decl so that we get the
IDENTIFIER_LABEL_VALUE before the new label is declared. */
ent = ggc_alloc_cleared_named_label_entry ();
ent->label_decl = decl;
slot = htab_find_slot (named_labels, ent, INSERT);
gcc_assert (*slot == NULL);
*slot = ent;
return decl;
}
/* Look for a label named ID in the current function. If one cannot
be found, create one. (We keep track of used, but undefined,
labels, and complain about them at the end of a function.) */
tree
lookup_label (tree id)
{
tree decl;
timevar_push (TV_NAME_LOOKUP);
/* You can't use labels at global scope. */
if (current_function_decl == NULL_TREE)
{
error ("label %qE referenced outside of any function", id);
POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
}
/* See if we've already got this label. */
decl = IDENTIFIER_LABEL_VALUE (id);
if (decl != NULL_TREE && DECL_CONTEXT (decl) == current_function_decl)
POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, decl);
decl = make_label_decl (id, /*local_p=*/0);
POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, decl);
}
/* Declare a local label named ID. */
tree
declare_local_label (tree id)
{
tree decl;
cp_label_binding *bind;
/* Add a new entry to the SHADOWED_LABELS list so that when we leave
this scope we can restore the old value of IDENTIFIER_TYPE_VALUE. */
bind = VEC_safe_push (cp_label_binding, gc,
current_binding_level->shadowed_labels, NULL);
bind->prev_value = IDENTIFIER_LABEL_VALUE (id);
decl = make_label_decl (id, /*local_p=*/1);
bind->label = decl;
return decl;
}
/* Returns nonzero if it is ill-formed to jump past the declaration of
DECL. Returns 2 if it's also a real problem. */
static int
decl_jump_unsafe (tree decl)
{
/* [stmt.dcl]/3: A program that jumps from a point where a local variable
with automatic storage duration is not in scope to a point where it is
in scope is ill-formed unless the variable has scalar type, class type
with a trivial default constructor and a trivial destructor, a
cv-qualified version of one of these types, or an array of one of the
preceding types and is declared without an initializer (8.5). */
tree type = TREE_TYPE (decl);
if (TREE_CODE (decl) != VAR_DECL || TREE_STATIC (decl)
|| type == error_mark_node)
return 0;
type = strip_array_types (type);
if (type_has_nontrivial_default_init (TREE_TYPE (decl))
|| DECL_NONTRIVIALLY_INITIALIZED_P (decl))
return 2;
if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (TREE_TYPE (decl)))
return 1;
return 0;
}
/* A subroutine of check_previous_goto_1 to identify a branch to the user. */
static void
identify_goto (tree decl, const location_t *locus)
{
if (decl)
permerror (input_location, "jump to label %qD", decl);
else
permerror (input_location, "jump to case label");
if (locus)
permerror (*locus, " from here");
}
/* Check that a single previously seen jump to a newly defined label
is OK. DECL is the LABEL_DECL or 0; LEVEL is the binding_level for
the jump context; NAMES are the names in scope in LEVEL at the jump
context; LOCUS is the source position of the jump or 0. Returns
true if all is well. */
static bool
check_previous_goto_1 (tree decl, struct cp_binding_level* level, tree names,
bool exited_omp, const location_t *locus)
{
struct cp_binding_level *b;
bool identified = false, saw_eh = false, saw_omp = false;
if (exited_omp)
{
identify_goto (decl, locus);
error (" exits OpenMP structured block");
identified = saw_omp = true;
}
for (b = current_binding_level; b ; b = b->level_chain)
{
tree new_decls, old_decls = (b == level ? names : NULL_TREE);
for (new_decls = b->names; new_decls != old_decls;
new_decls = DECL_CHAIN (new_decls))
{
int problem = decl_jump_unsafe (new_decls);
if (! problem)
continue;
if (!identified)
{
identify_goto (decl, locus);
identified = true;
}
if (problem > 1)
error (" crosses initialization of %q+#D", new_decls);
else
permerror (input_location, " enters scope of %q+#D which has "
"non-trivial destructor", new_decls);
}
if (b == level)
break;
if ((b->kind == sk_try || b->kind == sk_catch) && !saw_eh)
{
if (!identified)
{
identify_goto (decl, locus);
identified = true;
}
if (b->kind == sk_try)
error (" enters try block");
else
error (" enters catch block");
saw_eh = true;
}
if (b->kind == sk_omp && !saw_omp)
{
if (!identified)
{
identify_goto (decl, locus);
identified = true;
}
error (" enters OpenMP structured block");
saw_omp = true;
}
}
return !identified;
}
static void
check_previous_goto (tree decl, struct named_label_use_entry *use)
{
check_previous_goto_1 (decl, use->binding_level,
use->names_in_scope, use->in_omp_scope,
&use->o_goto_locus);
}
static bool
check_switch_goto (struct cp_binding_level* level)
{
return check_previous_goto_1 (NULL_TREE, level, level->names, false, NULL);
}
/* Check that a new jump to a label DECL is OK. Called by
finish_goto_stmt. */
void
check_goto (tree decl)
{
struct named_label_entry *ent, dummy;
bool saw_catch = false, identified = false;
tree bad;
unsigned ix;
/* We can't know where a computed goto is jumping.
So we assume that it's OK. */
if (TREE_CODE (decl) != LABEL_DECL)
return;
/* We didn't record any information about this label when we created it,
and there's not much point since it's trivial to analyze as a return. */
if (decl == cdtor_label)
return;
dummy.label_decl = decl;
ent = (struct named_label_entry *) htab_find (named_labels, &dummy);
gcc_assert (ent != NULL);
/* If the label hasn't been defined yet, defer checking. */
if (! DECL_INITIAL (decl))
{
struct named_label_use_entry *new_use;
/* Don't bother creating another use if the last goto had the
same data, and will therefore create the same set of errors. */
if (ent->uses
&& ent->uses->names_in_scope == current_binding_level->names)
return;
new_use = ggc_alloc_named_label_use_entry ();
new_use->binding_level = current_binding_level;
new_use->names_in_scope = current_binding_level->names;
new_use->o_goto_locus = input_location;
new_use->in_omp_scope = false;
new_use->next = ent->uses;
ent->uses = new_use;
return;
}
if (ent->in_try_scope || ent->in_catch_scope
|| ent->in_omp_scope || !VEC_empty (tree, ent->bad_decls))
{
permerror (input_location, "jump to label %q+D", decl);
permerror (input_location, " from here");
identified = true;
}
FOR_EACH_VEC_ELT (tree, ent->bad_decls, ix, bad)
{
int u = decl_jump_unsafe (bad);
if (u > 1 && DECL_ARTIFICIAL (bad))
{
/* Can't skip init of __exception_info. */
error_at (DECL_SOURCE_LOCATION (bad), " enters catch block");
saw_catch = true;
}
else if (u > 1)
error (" skips initialization of %q+#D", bad);
else
permerror (input_location, " enters scope of %q+#D which has "
"non-trivial destructor", bad);
}
if (ent->in_try_scope)
error (" enters try block");
else if (ent->in_catch_scope && !saw_catch)
error (" enters catch block");
if (ent->in_omp_scope)
error (" enters OpenMP structured block");
else if (flag_openmp)
{
struct cp_binding_level *b;
for (b = current_binding_level; b ; b = b->level_chain)
{
if (b == ent->binding_level)
break;
if (b->kind == sk_omp)
{
if (!identified)
{
permerror (input_location, "jump to label %q+D", decl);
permerror (input_location, " from here");
identified = true;
}
error (" exits OpenMP structured block");
break;
}
}
}
}
/* Check that a return is ok wrt OpenMP structured blocks.
Called by finish_return_stmt. Returns true if all is well. */
bool
check_omp_return (void)
{
struct cp_binding_level *b;
for (b = current_binding_level; b ; b = b->level_chain)
if (b->kind == sk_omp)
{
error ("invalid exit from OpenMP structured block");
return false;
}
return true;
}
/* Define a label, specifying the location in the source file.
Return the LABEL_DECL node for the label. */
tree
define_label (location_t location, tree name)
{
struct named_label_entry *ent, dummy;
struct cp_binding_level *p;
tree decl;
timevar_push (TV_NAME_LOOKUP);
decl = lookup_label (name);
dummy.label_decl = decl;
ent = (struct named_label_entry *) htab_find (named_labels, &dummy);
gcc_assert (ent != NULL);
/* After labels, make any new cleanups in the function go into their
own new (temporary) binding contour. */
for (p = current_binding_level;
p->kind != sk_function_parms;
p = p->level_chain)
p->more_cleanups_ok = 0;
if (name == get_identifier ("wchar_t"))
permerror (input_location, "label named wchar_t");
if (DECL_INITIAL (decl) != NULL_TREE)
{
error ("duplicate label %qD", decl);
POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
}
else
{
struct named_label_use_entry *use;
/* Mark label as having been defined. */
DECL_INITIAL (decl) = error_mark_node;
/* Say where in the source. */
DECL_SOURCE_LOCATION (decl) = location;
ent->binding_level = current_binding_level;
ent->names_in_scope = current_binding_level->names;
for (use = ent->uses; use ; use = use->next)
check_previous_goto (decl, use);
ent->uses = NULL;
}
POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, decl);
}
struct cp_switch
{
struct cp_binding_level *level;
struct cp_switch *next;
/* The SWITCH_STMT being built. */
tree switch_stmt;
/* A splay-tree mapping the low element of a case range to the high
element, or NULL_TREE if there is no high element. Used to
determine whether or not a new case label duplicates an old case
label. We need a tree, rather than simply a hash table, because
of the GNU case range extension. */
splay_tree cases;
};
/* A stack of the currently active switch statements. The innermost
switch statement is on the top of the stack. There is no need to
mark the stack for garbage collection because it is only active
during the processing of the body of a function, and we never
collect at that point. */
static struct cp_switch *switch_stack;
/* Called right after a switch-statement condition is parsed.
SWITCH_STMT is the switch statement being parsed. */
void
push_switch (tree switch_stmt)
{
struct cp_switch *p = XNEW (struct cp_switch);
p->level = current_binding_level;
p->next = switch_stack;
p->switch_stmt = switch_stmt;
p->cases = splay_tree_new (case_compare, NULL, NULL);
switch_stack = p;
}
void
pop_switch (void)
{
struct cp_switch *cs = switch_stack;
location_t switch_location;
/* Emit warnings as needed. */
switch_location = EXPR_LOC_OR_HERE (cs->switch_stmt);
if (!processing_template_decl)
c_do_switch_warnings (cs->cases, switch_location,
SWITCH_STMT_TYPE (cs->switch_stmt),
SWITCH_STMT_COND (cs->switch_stmt));
splay_tree_delete (cs->cases);
switch_stack = switch_stack->next;
free (cs);
}
/* Note that we've seen a definition of a case label, and complain if this
is a bad place for one. */
tree
finish_case_label (location_t loc, tree low_value, tree high_value)
{
tree cond, r;
struct cp_binding_level *p;
if (processing_template_decl)
{
tree label;
/* For templates, just add the case label; we'll do semantic
analysis at instantiation-time. */
label = build_decl (loc, LABEL_DECL, NULL_TREE, NULL_TREE);
return add_stmt (build_case_label (loc, low_value, high_value, label));
}
/* Find the condition on which this switch statement depends. */
cond = SWITCH_STMT_COND (switch_stack->switch_stmt);
if (cond && TREE_CODE (cond) == TREE_LIST)
cond = TREE_VALUE (cond);
if (!check_switch_goto (switch_stack->level))
return error_mark_node;
if (low_value)
low_value = cxx_constant_value (low_value);
if (high_value)
high_value = cxx_constant_value (high_value);
r = c_add_case_label (loc, switch_stack->cases, cond,
SWITCH_STMT_TYPE (switch_stack->switch_stmt),
low_value, high_value);
/* After labels, make any new cleanups in the function go into their
own new (temporary) binding contour. */
for (p = current_binding_level;
p->kind != sk_function_parms;
p = p->level_chain)
p->more_cleanups_ok = 0;
return r;
}
/* Hash a TYPENAME_TYPE. K is really of type `tree'. */
static hashval_t
typename_hash (const void* k)
{
hashval_t hash;
const_tree const t = (const_tree) k;
hash = (htab_hash_pointer (TYPE_CONTEXT (t))
^ htab_hash_pointer (DECL_NAME (TYPE_NAME (t))));
return hash;
}
typedef struct typename_info {
tree scope;
tree name;
tree template_id;
bool enum_p;
bool class_p;
} typename_info;
/* Compare two TYPENAME_TYPEs. K1 is really of type `tree', K2 is
really of type `typename_info*' */
static int
typename_compare (const void * k1, const void * k2)
{
const_tree const t1 = (const_tree) k1;
const typename_info *const t2 = (const typename_info *) k2;
return (DECL_NAME (TYPE_NAME (t1)) == t2->name
&& TYPE_CONTEXT (t1) == t2->scope
&& TYPENAME_TYPE_FULLNAME (t1) == t2->template_id
&& TYPENAME_IS_ENUM_P (t1) == t2->enum_p
&& TYPENAME_IS_CLASS_P (t1) == t2->class_p);
}
/* Build a TYPENAME_TYPE. If the type is `typename T::t', CONTEXT is
the type of `T', NAME is the IDENTIFIER_NODE for `t'.
Returns the new TYPENAME_TYPE. */
static GTY ((param_is (union tree_node))) htab_t typename_htab;
static tree
build_typename_type (tree context, tree name, tree fullname,
enum tag_types tag_type)
{
tree t;
tree d;
typename_info ti;
void **e;
hashval_t hash;
if (typename_htab == NULL)
typename_htab = htab_create_ggc (61, &typename_hash,
&typename_compare, NULL);
ti.scope = FROB_CONTEXT (context);
ti.name = name;
ti.template_id = fullname;
ti.enum_p = tag_type == enum_type;
ti.class_p = (tag_type == class_type
|| tag_type == record_type
|| tag_type == union_type);
hash = (htab_hash_pointer (ti.scope)
^ htab_hash_pointer (ti.name));
/* See if we already have this type. */
e = htab_find_slot_with_hash (typename_htab, &ti, hash, INSERT);
if (*e)
t = (tree) *e;
else
{
/* Build the TYPENAME_TYPE. */
t = cxx_make_type (TYPENAME_TYPE);
TYPE_CONTEXT (t) = ti.scope;
TYPENAME_TYPE_FULLNAME (t) = ti.template_id;
TYPENAME_IS_ENUM_P (t) = ti.enum_p;
TYPENAME_IS_CLASS_P (t) = ti.class_p;
/* Build the corresponding TYPE_DECL. */
d = build_decl (input_location, TYPE_DECL, name, t);
TYPE_NAME (TREE_TYPE (d)) = d;
TYPE_STUB_DECL (TREE_TYPE (d)) = d;
DECL_CONTEXT (d) = FROB_CONTEXT (context);
DECL_ARTIFICIAL (d) = 1;
/* Store it in the hash table. */
*e = t;
/* TYPENAME_TYPEs must always be compared structurally, because
they may or may not resolve down to another type depending on
the currently open classes. */
SET_TYPE_STRUCTURAL_EQUALITY (t);
}
return t;
}
/* Resolve `typename CONTEXT::NAME'. TAG_TYPE indicates the tag
provided to name the type. Returns an appropriate type, unless an
error occurs, in which case error_mark_node is returned. If we
locate a non-artificial TYPE_DECL and TF_KEEP_TYPE_DECL is set, we
return that, rather than the _TYPE it corresponds to, in other
cases we look through the type decl. If TF_ERROR is set, complain
about errors, otherwise be quiet. */
tree
make_typename_type (tree context, tree name, enum tag_types tag_type,
tsubst_flags_t complain)
{
tree fullname;
tree t;
bool want_template;
if (name == error_mark_node
|| context == NULL_TREE
|| context == error_mark_node)
return error_mark_node;
if (TYPE_P (name))
{
if (!(TYPE_LANG_SPECIFIC (name)
&& (CLASSTYPE_IS_TEMPLATE (name)
|| CLASSTYPE_USE_TEMPLATE (name))))
name = TYPE_IDENTIFIER (name);
else
/* Create a TEMPLATE_ID_EXPR for the type. */
name = build_nt (TEMPLATE_ID_EXPR,
CLASSTYPE_TI_TEMPLATE (name),
CLASSTYPE_TI_ARGS (name));
}
else if (TREE_CODE (name) == TYPE_DECL)
name = DECL_NAME (name);
fullname = name;
if (TREE_CODE (name) == TEMPLATE_ID_EXPR)
{
name = TREE_OPERAND (name, 0);
if (TREE_CODE (name) == TEMPLATE_DECL)
name = TREE_OPERAND (fullname, 0) = DECL_NAME (name);
else if (TREE_CODE (name) == OVERLOAD)
{
error ("%qD is not a type", name);
return error_mark_node;
}
}
if (TREE_CODE (name) == TEMPLATE_DECL)
{
error ("%qD used without template parameters", name);
return error_mark_node;
}
gcc_assert (TREE_CODE (name) == IDENTIFIER_NODE);
gcc_assert (TYPE_P (context));
if (!MAYBE_CLASS_TYPE_P (context))
{
if (complain & tf_error)
error ("%q#T is not a class", context);
return error_mark_node;
}
/* When the CONTEXT is a dependent type, NAME could refer to a
dependent base class of CONTEXT. But look inside it anyway
if CONTEXT is a currently open scope, in case it refers to a
member of the current instantiation or a non-dependent base;
lookup will stop when we hit a dependent base. */
if (!dependent_scope_p (context))
/* We should only set WANT_TYPE when we're a nested typename type.
Then we can give better diagnostics if we find a non-type. */
t = lookup_field (context, name, 2, /*want_type=*/true);
else
t = NULL_TREE;
if ((!t || TREE_CODE (t) == TREE_LIST) && dependent_type_p (context))
return build_typename_type (context, name, fullname, tag_type);
want_template = TREE_CODE (fullname) == TEMPLATE_ID_EXPR;
if (!t)
{
if (complain & tf_error)
error (want_template ? "no class template named %q#T in %q#T"
: "no type named %q#T in %q#T", name, context);
return error_mark_node;
}
/* Pull out the template from an injected-class-name (or multiple). */
if (want_template)
t = maybe_get_template_decl_from_type_decl (t);
if (TREE_CODE (t) == TREE_LIST)
{
if (complain & tf_error)
{
error ("lookup of %qT in %qT is ambiguous", name, context);
print_candidates (t);
}
return error_mark_node;
}
if (want_template && !DECL_CLASS_TEMPLATE_P (t))
{
if (complain & tf_error)
error ("%<typename %T::%D%> names %q#T, which is not a class template",
context, name, t);
return error_mark_node;
}
if (!want_template && TREE_CODE (t) != TYPE_DECL)
{
if (complain & tf_error)
error ("%<typename %T::%D%> names %q#T, which is not a type",
context, name, t);
return error_mark_node;
}
if (complain & tf_error)
perform_or_defer_access_check (TYPE_BINFO (context), t, t);
/* If we are currently parsing a template and if T is a typedef accessed
through CONTEXT then we need to remember and check access of T at
template instantiation time. */
add_typedef_to_current_template_for_access_check (t, context, input_location);
if (want_template)
return lookup_template_class (t, TREE_OPERAND (fullname, 1),
NULL_TREE, context,
/*entering_scope=*/0,
tf_warning_or_error | tf_user);
if (DECL_ARTIFICIAL (t) || !(complain & tf_keep_type_decl))
t = TREE_TYPE (t);
return t;
}
/* Resolve `CONTEXT::template NAME'. Returns a TEMPLATE_DECL if the name
can be resolved or an UNBOUND_CLASS_TEMPLATE, unless an error occurs,
in which case error_mark_node is returned.
If PARM_LIST is non-NULL, also make sure that the template parameter
list of TEMPLATE_DECL matches.
If COMPLAIN zero, don't complain about any errors that occur. */
tree
make_unbound_class_template (tree context, tree name, tree parm_list,
tsubst_flags_t complain)
{
tree t;
tree d;
if (TYPE_P (name))
name = TYPE_IDENTIFIER (name);
else if (DECL_P (name))
name = DECL_NAME (name);
gcc_assert (TREE_CODE (name) == IDENTIFIER_NODE);
if (!dependent_type_p (context)
|| currently_open_class (context))
{
tree tmpl = NULL_TREE;
if (MAYBE_CLASS_TYPE_P (context))
tmpl = lookup_field (context, name, 0, false);
if (tmpl && TREE_CODE (tmpl) == TYPE_DECL)
tmpl = maybe_get_template_decl_from_type_decl (tmpl);
if (!tmpl || !DECL_CLASS_TEMPLATE_P (tmpl))
{
if (complain & tf_error)
error ("no class template named %q#T in %q#T", name, context);
return error_mark_node;
}
if (parm_list
&& !comp_template_parms (DECL_TEMPLATE_PARMS (tmpl), parm_list))
{
if (complain & tf_error)
{
error ("template parameters do not match template");
error ("%q+D declared here", tmpl);
}
return error_mark_node;
}
if (complain & tf_error)
perform_or_defer_access_check (TYPE_BINFO (context), tmpl, tmpl);
return tmpl;
}
/* Build the UNBOUND_CLASS_TEMPLATE. */
t = cxx_make_type (UNBOUND_CLASS_TEMPLATE);
TYPE_CONTEXT (t) = FROB_CONTEXT (context);
TREE_TYPE (t) = NULL_TREE;
SET_TYPE_STRUCTURAL_EQUALITY (t);
/* Build the corresponding TEMPLATE_DECL. */
d = build_decl (input_location, TEMPLATE_DECL, name, t);
TYPE_NAME (TREE_TYPE (d)) = d;
TYPE_STUB_DECL (TREE_TYPE (d)) = d;
DECL_CONTEXT (d) = FROB_CONTEXT (context);
DECL_ARTIFICIAL (d) = 1;
DECL_TEMPLATE_PARMS (d) = parm_list;
return t;
}
/* Push the declarations of builtin types into the namespace.
RID_INDEX is the index of the builtin type in the array
RID_POINTERS. NAME is the name used when looking up the builtin
type. TYPE is the _TYPE node for the builtin type. */
void
record_builtin_type (enum rid rid_index,
const char* name,
tree type)
{
tree rname = NULL_TREE, tname = NULL_TREE;
tree tdecl = NULL_TREE;
if ((int) rid_index < (int) RID_MAX)
rname = ridpointers[(int) rid_index];
if (name)
tname = get_identifier (name);
/* The calls to SET_IDENTIFIER_GLOBAL_VALUE below should be
eliminated. Built-in types should not be looked up name; their
names are keywords that the parser can recognize. However, there
is code in c-common.c that uses identifier_global_value to look
up built-in types by name. */
if (tname)
{
tdecl = build_decl (BUILTINS_LOCATION, TYPE_DECL, tname, type);
DECL_ARTIFICIAL (tdecl) = 1;
SET_IDENTIFIER_GLOBAL_VALUE (tname, tdecl);
}
if (rname)
{
if (!tdecl)
{
tdecl = build_decl (BUILTINS_LOCATION, TYPE_DECL, rname, type);
DECL_ARTIFICIAL (tdecl) = 1;
}
SET_IDENTIFIER_GLOBAL_VALUE (rname, tdecl);
}
if (!TYPE_NAME (type))
TYPE_NAME (type) = tdecl;
if (tdecl)
debug_hooks->type_decl (tdecl, 0);
}
/* Record one of the standard Java types.
* Declare it as having the given NAME.
* If SIZE > 0, it is the size of one of the integral types;
* otherwise it is the negative of the size of one of the other types. */
static tree
record_builtin_java_type (const char* name, int size)
{
tree type, decl;
if (size > 0)
{
type = build_nonstandard_integer_type (size, 0);
type = build_distinct_type_copy (type);
}
else if (size > -32)
{
tree stype;
/* "__java_char" or ""__java_boolean". */
type = build_nonstandard_integer_type (-size, 1);
type = build_distinct_type_copy (type);
/* Get the signed type cached and attached to the unsigned type,
so it doesn't get garbage-collected at "random" times,
causing potential codegen differences out of different UIDs
and different alias set numbers. */
stype = build_nonstandard_integer_type (-size, 0);
stype = build_distinct_type_copy (stype);
TREE_CHAIN (type) = stype;
/*if (size == -1) TREE_SET_CODE (type, BOOLEAN_TYPE);*/
}
else
{ /* "__java_float" or ""__java_double". */
type = make_node (REAL_TYPE);
TYPE_PRECISION (type) = - size;
layout_type (type);
}
record_builtin_type (RID_MAX, name, type);
decl = TYPE_NAME (type);
/* Suppress generate debug symbol entries for these types,
since for normal C++ they are just clutter.
However, push_lang_context undoes this if extern "Java" is seen. */
DECL_IGNORED_P (decl) = 1;
TYPE_FOR_JAVA (type) = 1;
return type;
}
/* Push a type into the namespace so that the back ends ignore it. */
static void
record_unknown_type (tree type, const char* name)
{
tree decl = pushdecl (build_decl (UNKNOWN_LOCATION,
TYPE_DECL, get_identifier (name), type));
/* Make sure the "unknown type" typedecl gets ignored for debug info. */
DECL_IGNORED_P (decl) = 1;
TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
TYPE_SIZE (type) = TYPE_SIZE (void_type_node);
TYPE_ALIGN (type) = 1;
TYPE_USER_ALIGN (type) = 0;
SET_TYPE_MODE (type, TYPE_MODE (void_type_node));
}
/* A string for which we should create an IDENTIFIER_NODE at
startup. */
typedef struct predefined_identifier
{
/* The name of the identifier. */
const char *const name;
/* The place where the IDENTIFIER_NODE should be stored. */
tree *const node;
/* Nonzero if this is the name of a constructor or destructor. */
const int ctor_or_dtor_p;
} predefined_identifier;
/* Create all the predefined identifiers. */
static void
initialize_predefined_identifiers (void)
{
const predefined_identifier *pid;
/* A table of identifiers to create at startup. */
static const predefined_identifier predefined_identifiers[] = {
{ "C++", &lang_name_cplusplus, 0 },
{ "C", &lang_name_c, 0 },
{ "Java", &lang_name_java, 0 },
/* Some of these names have a trailing space so that it is
impossible for them to conflict with names written by users. */
{ "__ct ", &ctor_identifier, 1 },
{ "__base_ctor ", &base_ctor_identifier, 1 },
{ "__comp_ctor ", &complete_ctor_identifier, 1 },
{ "__dt ", &dtor_identifier, 1 },
{ "__comp_dtor ", &complete_dtor_identifier, 1 },
{ "__base_dtor ", &base_dtor_identifier, 1 },
{ "__deleting_dtor ", &deleting_dtor_identifier, 1 },
{ IN_CHARGE_NAME, &in_charge_identifier, 0 },
{ "nelts", &nelts_identifier, 0 },
{ THIS_NAME, &this_identifier, 0 },
{ VTABLE_DELTA_NAME, &delta_identifier, 0 },
{ VTABLE_PFN_NAME, &pfn_identifier, 0 },
{ "_vptr", &vptr_identifier, 0 },
{ "__vtt_parm", &vtt_parm_identifier, 0 },
{ "::", &global_scope_name, 0 },
{ "std", &std_identifier, 0 },
{ NULL, NULL, 0 }
};
for (pid = predefined_identifiers; pid->name; ++pid)
{
*pid->node = get_identifier (pid->name);
if (pid->ctor_or_dtor_p)
IDENTIFIER_CTOR_OR_DTOR_P (*pid->node) = 1;
}
}
/* Create the predefined scalar types of C,
and some nodes representing standard constants (0, 1, (void *)0).
Initialize the global binding level.
Make definitions for built-in primitive functions. */
void
cxx_init_decl_processing (void)
{
tree void_ftype;
tree void_ftype_ptr;
build_common_tree_nodes (flag_signed_char);
/* Create all the identifiers we need. */
initialize_predefined_identifiers ();
/* Create the global variables. */
push_to_top_level ();
current_function_decl = NULL_TREE;
current_binding_level = NULL;
/* Enter the global namespace. */
gcc_assert (global_namespace == NULL_TREE);
global_namespace = build_lang_decl (NAMESPACE_DECL, global_scope_name,
void_type_node);
DECL_CONTEXT (global_namespace) = build_translation_unit_decl (NULL_TREE);
TREE_PUBLIC (global_namespace) = 1;
begin_scope (sk_namespace, global_namespace);
current_lang_name = NULL_TREE;
if (flag_visibility_ms_compat)
default_visibility = VISIBILITY_HIDDEN;
/* Initially, C. */
current_lang_name = lang_name_c;
/* Create the `std' namespace. */
push_namespace (std_identifier);
std_node = current_namespace;
pop_namespace ();
c_common_nodes_and_builtins ();
java_byte_type_node = record_builtin_java_type ("__java_byte", 8);
java_short_type_node = record_builtin_java_type ("__java_short", 16);
java_int_type_node = record_builtin_java_type ("__java_int", 32);
java_long_type_node = record_builtin_java_type ("__java_long", 64);
java_float_type_node = record_builtin_java_type ("__java_float", -32);
java_double_type_node = record_builtin_java_type ("__java_double", -64);
java_char_type_node = record_builtin_java_type ("__java_char", -16);
java_boolean_type_node = record_builtin_java_type ("__java_boolean", -1);
integer_two_node = build_int_cst (NULL_TREE, 2);
record_builtin_type (RID_BOOL, "bool", boolean_type_node);
truthvalue_type_node = boolean_type_node;
truthvalue_false_node = boolean_false_node;
truthvalue_true_node = boolean_true_node;
empty_except_spec = build_tree_list (NULL_TREE, NULL_TREE);
noexcept_true_spec = build_tree_list (boolean_true_node, NULL_TREE);
noexcept_false_spec = build_tree_list (boolean_false_node, NULL_TREE);
#if 0
record_builtin_type (RID_MAX, NULL, string_type_node);
#endif
delta_type_node = ptrdiff_type_node;
vtable_index_type = ptrdiff_type_node;
vtt_parm_type = build_pointer_type (const_ptr_type_node);
void_ftype = build_function_type_list (void_type_node, NULL_TREE);
void_ftype_ptr = build_function_type_list (void_type_node,
ptr_type_node, NULL_TREE);
void_ftype_ptr
= build_exception_variant (void_ftype_ptr, empty_except_spec);
/* C++ extensions */
unknown_type_node = make_node (LANG_TYPE);
record_unknown_type (unknown_type_node, "unknown type");
/* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
TREE_TYPE (unknown_type_node) = unknown_type_node;
/* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same
result. */
TYPE_POINTER_TO (unknown_type_node) = unknown_type_node;
TYPE_REFERENCE_TO (unknown_type_node) = unknown_type_node;
init_list_type_node = make_node (LANG_TYPE);
record_unknown_type (init_list_type_node, "init list");
{
/* Make sure we get a unique function type, so we can give
its pointer type a name. (This wins for gdb.) */
tree vfunc_type = make_node (FUNCTION_TYPE);
TREE_TYPE (vfunc_type) = integer_type_node;
TYPE_ARG_TYPES (vfunc_type) = NULL_TREE;
layout_type (vfunc_type);
vtable_entry_type = build_pointer_type (vfunc_type);
}
record_builtin_type (RID_MAX, VTBL_PTR_TYPE, vtable_entry_type);
vtbl_type_node
= build_cplus_array_type (vtable_entry_type, NULL_TREE);
layout_type (vtbl_type_node);
vtbl_type_node = cp_build_qualified_type (vtbl_type_node, TYPE_QUAL_CONST);
record_builtin_type (RID_MAX, NULL, vtbl_type_node);
vtbl_ptr_type_node = build_pointer_type (vtable_entry_type);
layout_type (vtbl_ptr_type_node);
record_builtin_type (RID_MAX, NULL, vtbl_ptr_type_node);
push_namespace (get_identifier ("__cxxabiv1"));
abi_node = current_namespace;
pop_namespace ();
global_type_node = make_node (LANG_TYPE);
record_unknown_type (global_type_node, "global type");
/* Now, C++. */
current_lang_name = lang_name_cplusplus;
{
tree newtype, deltype;
tree ptr_ftype_sizetype;
tree new_eh_spec;
ptr_ftype_sizetype
= build_function_type_list (ptr_type_node, size_type_node, NULL_TREE);
if (cxx_dialect == cxx98)
{
tree bad_alloc_id;
tree bad_alloc_type_node;
tree bad_alloc_decl;
push_namespace (std_identifier);
bad_alloc_id = get_identifier ("bad_alloc");
bad_alloc_type_node = make_class_type (RECORD_TYPE);
TYPE_CONTEXT (bad_alloc_type_node) = current_namespace;
bad_alloc_decl
= create_implicit_typedef (bad_alloc_id, bad_alloc_type_node);
DECL_CONTEXT (bad_alloc_decl) = current_namespace;
pop_namespace ();
new_eh_spec
= add_exception_specifier (NULL_TREE, bad_alloc_type_node, -1);
}
else
new_eh_spec = noexcept_false_spec;
newtype = build_exception_variant (ptr_ftype_sizetype, new_eh_spec);
deltype = build_exception_variant (void_ftype_ptr, empty_except_spec);
push_cp_library_fn (NEW_EXPR, newtype);
push_cp_library_fn (VEC_NEW_EXPR, newtype);
global_delete_fndecl = push_cp_library_fn (DELETE_EXPR, deltype);
push_cp_library_fn (VEC_DELETE_EXPR, deltype);
nullptr_type_node = make_node (NULLPTR_TYPE);
TYPE_SIZE (nullptr_type_node) = bitsize_int (GET_MODE_BITSIZE (ptr_mode));
TYPE_SIZE_UNIT (nullptr_type_node) = size_int (GET_MODE_SIZE (ptr_mode));
TYPE_UNSIGNED (nullptr_type_node) = 1;
TYPE_PRECISION (nullptr_type_node) = GET_MODE_BITSIZE (ptr_mode);
SET_TYPE_MODE (nullptr_type_node, Pmode);
record_builtin_type (RID_MAX, "decltype(nullptr)", nullptr_type_node);
nullptr_node = build_int_cst (nullptr_type_node, 0);
}
abort_fndecl
= build_library_fn_ptr ("__cxa_pure_virtual", void_ftype);
/* Perform other language dependent initializations. */
init_class_processing ();
init_rtti_processing ();
init_template_processing ();
if (flag_exceptions)
init_exception_processing ();
if (! supports_one_only ())
flag_weak = 0;
make_fname_decl = cp_make_fname_decl;
start_fname_decls ();
/* Show we use EH for cleanups. */
if (flag_exceptions)
using_eh_for_cleanups ();
}
/* Generate an initializer for a function naming variable from
NAME. NAME may be NULL, to indicate a dependent name. TYPE_P is
filled in with the type of the init. */
tree
cp_fname_init (const char* name, tree *type_p)
{
tree domain = NULL_TREE;
tree type;
tree init = NULL_TREE;
size_t length = 0;
if (name)
{
length = strlen (name);
domain = build_index_type (size_int (length));
init = build_string (length + 1, name);
}
type = cp_build_qualified_type (char_type_node, TYPE_QUAL_CONST);
type = build_cplus_array_type (type, domain);
*type_p = type;
if (init)
TREE_TYPE (init) = type;
else
init = error_mark_node;
return init;
}
/* Create the VAR_DECL for __FUNCTION__ etc. ID is the name to give
the decl, LOC is the location to give the decl, NAME is the
initialization string and TYPE_DEP indicates whether NAME depended
on the type of the function. We make use of that to detect
__PRETTY_FUNCTION__ inside a template fn. This is being done lazily
at the point of first use, so we mustn't push the decl now. */
static tree
cp_make_fname_decl (location_t loc, tree id, int type_dep)
{
const char *const name = (type_dep && processing_template_decl
? NULL : fname_as_string (type_dep));
tree type;
tree init = cp_fname_init (name, &type);
tree decl = build_decl (loc, VAR_DECL, id, type);
if (name)
free (CONST_CAST (char *, name));
/* As we're using pushdecl_with_scope, we must set the context. */
DECL_CONTEXT (decl) = current_function_decl;
DECL_PRETTY_FUNCTION_P (decl) = type_dep;
TREE_STATIC (decl) = 1;
TREE_READONLY (decl) = 1;
DECL_ARTIFICIAL (decl) = 1;
TREE_USED (decl) = 1;
if (current_function_decl)
{
struct cp_binding_level *b = current_binding_level;
if (b->kind == sk_function_parms)
return error_mark_node;
while (b->level_chain->kind != sk_function_parms)
b = b->level_chain;
pushdecl_with_scope (decl, b, /*is_friend=*/false);
cp_finish_decl (decl, init, /*init_const_expr_p=*/false, NULL_TREE,
LOOKUP_ONLYCONVERTING);
}
else
{
DECL_THIS_STATIC (decl) = true;
pushdecl_top_level_and_finish (decl, init);
}
return decl;
}
static tree
builtin_function_1 (tree decl, tree context, bool is_global)
{
tree id = DECL_NAME (decl);
const char *name = IDENTIFIER_POINTER (id);
retrofit_lang_decl (decl);
DECL_ARTIFICIAL (decl) = 1;
SET_OVERLOADED_OPERATOR_CODE (decl, ERROR_MARK);
SET_DECL_LANGUAGE (decl, lang_c);
/* Runtime library routines are, by definition, available in an
external shared object. */
DECL_VISIBILITY (decl) = VISIBILITY_DEFAULT;
DECL_VISIBILITY_SPECIFIED (decl) = 1;
DECL_CONTEXT (decl) = context;
if (is_global)
pushdecl_top_level (decl);
else
pushdecl (decl);
/* A function in the user's namespace should have an explicit
declaration before it is used. Mark the built-in function as
anticipated but not actually declared. */
if (name[0] != '_' || name[1] != '_')
DECL_ANTICIPATED (decl) = 1;
else if (strncmp (name + 2, "builtin_", strlen ("builtin_")) != 0)
{
size_t len = strlen (name);
/* Treat __*_chk fortification functions as anticipated as well,
unless they are __builtin_*. */
if (len > strlen ("___chk")
&& memcmp (name + len - strlen ("_chk"),
"_chk", strlen ("_chk") + 1) == 0)
DECL_ANTICIPATED (decl) = 1;
}
return decl;
}
tree
cxx_builtin_function (tree decl)
{
tree id = DECL_NAME (decl);
const char *name = IDENTIFIER_POINTER (id);
/* All builtins that don't begin with an '_' should additionally
go in the 'std' namespace. */
if (name[0] != '_')
{
tree decl2 = copy_node(decl);
push_namespace (std_identifier);
builtin_function_1 (decl2, std_node, false);
pop_namespace ();
}
return builtin_function_1 (decl, NULL_TREE, false);
}
/* Like cxx_builtin_function, but guarantee the function is added to the global
scope. This is to allow function specific options to add new machine
dependent builtins when the target ISA changes via attribute((target(...)))
which saves space on program startup if the program does not use non-generic
ISAs. */
tree
cxx_builtin_function_ext_scope (tree decl)
{
tree id = DECL_NAME (decl);
const char *name = IDENTIFIER_POINTER (id);
/* All builtins that don't begin with an '_' should additionally
go in the 'std' namespace. */
if (name[0] != '_')
{
tree decl2 = copy_node(decl);
push_namespace (std_identifier);
builtin_function_1 (decl2, std_node, true);
pop_namespace ();
}
return builtin_function_1 (decl, NULL_TREE, true);
}
/* Generate a FUNCTION_DECL with the typical flags for a runtime library
function. Not called directly. */
static tree
build_library_fn_1 (tree name, enum tree_code operator_code, tree type)
{
tree fn = build_lang_decl (FUNCTION_DECL, name, type);
DECL_EXTERNAL (fn) = 1;
TREE_PUBLIC (fn) = 1;
DECL_ARTIFICIAL (fn) = 1;
SET_OVERLOADED_OPERATOR_CODE (fn, operator_code);
SET_DECL_LANGUAGE (fn, lang_c);
/* Runtime library routines are, by definition, available in an
external shared object. */
DECL_VISIBILITY (fn) = VISIBILITY_DEFAULT;
DECL_VISIBILITY_SPECIFIED (fn) = 1;
return fn;
}
/* Returns the _DECL for a library function with C linkage.
We assume that such functions never throw; if this is incorrect,
callers should unset TREE_NOTHROW. */
static tree
build_library_fn (tree name, tree type)
{
tree fn = build_library_fn_1 (name, ERROR_MARK, type);
TREE_NOTHROW (fn) = 1;
return fn;
}
/* Returns the _DECL for a library function with C++ linkage. */
static tree
build_cp_library_fn (tree name, enum tree_code operator_code, tree type)
{
tree fn = build_library_fn_1 (name, operator_code, type);
TREE_NOTHROW (fn) = TYPE_NOTHROW_P (type);
DECL_CONTEXT (fn) = FROB_CONTEXT (current_namespace);
SET_DECL_LANGUAGE (fn, lang_cplusplus);
return fn;
}
/* Like build_library_fn, but takes a C string instead of an
IDENTIFIER_NODE. */
tree
build_library_fn_ptr (const char* name, tree type)
{
return build_library_fn (get_identifier (name), type);
}
/* Like build_cp_library_fn, but takes a C string instead of an
IDENTIFIER_NODE. */
tree
build_cp_library_fn_ptr (const char* name, tree type)
{
return build_cp_library_fn (get_identifier (name), ERROR_MARK, type);
}
/* Like build_library_fn, but also pushes the function so that we will
be able to find it via IDENTIFIER_GLOBAL_VALUE. Also, the function
may throw exceptions listed in RAISES. */
tree
push_library_fn (tree name, tree type, tree raises)
{
tree fn;
if (raises)
type = build_exception_variant (type, raises);
fn = build_library_fn (name, type);
pushdecl_top_level (fn);
return fn;
}
/* Like build_cp_library_fn, but also pushes the function so that it
will be found by normal lookup. */
static tree
push_cp_library_fn (enum tree_code operator_code, tree type)
{
tree fn = build_cp_library_fn (ansi_opname (operator_code),
operator_code,
type);
pushdecl (fn);
return fn;
}
/* Like push_library_fn, but takes a TREE_LIST of parm types rather than
a FUNCTION_TYPE. */
tree
push_void_library_fn (tree name, tree parmtypes)
{
tree type = build_function_type (void_type_node, parmtypes);
return push_library_fn (name, type, NULL_TREE);
}
/* Like push_library_fn, but also note that this function throws
and does not return. Used for __throw_foo and the like. */
tree
push_throw_library_fn (tree name, tree type)
{
tree fn = push_library_fn (name, type, NULL_TREE);
TREE_THIS_VOLATILE (fn) = 1;
TREE_NOTHROW (fn) = 0;
return fn;
}
/* When we call finish_struct for an anonymous union, we create
default copy constructors and such. But, an anonymous union
shouldn't have such things; this function undoes the damage to the
anonymous union type T.
(The reason that we create the synthesized methods is that we don't
distinguish `union { int i; }' from `typedef union { int i; } U'.
The first is an anonymous union; the second is just an ordinary
union type.) */
void
fixup_anonymous_aggr (tree t)
{
tree *q;
/* Wipe out memory of synthesized methods. */
TYPE_HAS_USER_CONSTRUCTOR (t) = 0;
TYPE_HAS_DEFAULT_CONSTRUCTOR (t) = 0;
TYPE_HAS_COPY_CTOR (t) = 0;
TYPE_HAS_CONST_COPY_CTOR (t) = 0;
TYPE_HAS_COPY_ASSIGN (t) = 0;
TYPE_HAS_CONST_COPY_ASSIGN (t) = 0;
/* Splice the implicitly generated functions out of the TYPE_METHODS
list. */
q = &TYPE_METHODS (t);
while (*q)
{
if (DECL_ARTIFICIAL (*q))
*q = TREE_CHAIN (*q);
else
q = &DECL_CHAIN (*q);
}
/* ISO C++ 9.5.3. Anonymous unions may not have function members. */
if (TYPE_METHODS (t))
{
tree decl = TYPE_MAIN_DECL (t);
if (TREE_CODE (t) != UNION_TYPE)
error_at (DECL_SOURCE_LOCATION (decl),
"an anonymous struct cannot have function members");
else
error_at (DECL_SOURCE_LOCATION (decl),
"an anonymous union cannot have function members");
}
/* Anonymous aggregates cannot have fields with ctors, dtors or complex
assignment operators (because they cannot have these methods themselves).
For anonymous unions this is already checked because they are not allowed
in any union, otherwise we have to check it. */
if (TREE_CODE (t) != UNION_TYPE)
{
tree field, type;
for (field = TYPE_FIELDS (t); field; field = DECL_CHAIN (field))
if (TREE_CODE (field) == FIELD_DECL)
{
type = TREE_TYPE (field);
if (CLASS_TYPE_P (type))
{
if (TYPE_NEEDS_CONSTRUCTING (type))
error ("member %q+#D with constructor not allowed "
"in anonymous aggregate", field);
if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type))
error ("member %q+#D with destructor not allowed "
"in anonymous aggregate", field);
if (TYPE_HAS_COMPLEX_COPY_ASSIGN (type))
error ("member %q+#D with copy assignment operator "
"not allowed in anonymous aggregate", field);
}
}
}
}
/* Make sure that a declaration with no declarator is well-formed, i.e.
just declares a tagged type or anonymous union.
Returns the type declared; or NULL_TREE if none. */
tree
check_tag_decl (cp_decl_specifier_seq *declspecs)
{
int saw_friend = declspecs->specs[(int)ds_friend] != 0;
int saw_typedef = declspecs->specs[(int)ds_typedef] != 0;
/* If a class, struct, or enum type is declared by the DECLSPECS
(i.e, if a class-specifier, enum-specifier, or non-typename
elaborated-type-specifier appears in the DECLSPECS),
DECLARED_TYPE is set to the corresponding type. */
tree declared_type = NULL_TREE;
bool error_p = false;
if (declspecs->multiple_types_p)
error ("multiple types in one declaration");
else if (declspecs->redefined_builtin_type)
{
if (!in_system_header)
permerror (input_location, "redeclaration of C++ built-in type %qT",
declspecs->redefined_builtin_type);
return NULL_TREE;
}
if (declspecs->type
&& TYPE_P (declspecs->type)
&& ((TREE_CODE (declspecs->type) != TYPENAME_TYPE
&& MAYBE_CLASS_TYPE_P (declspecs->type))
|| TREE_CODE (declspecs->type) == ENUMERAL_TYPE))
declared_type = declspecs->type;
else if (declspecs->type == error_mark_node)
error_p = true;
if (declared_type == NULL_TREE && ! saw_friend && !error_p)
permerror (input_location, "declaration does not declare anything");
/* Check for an anonymous union. */
else if (declared_type && RECORD_OR_UNION_CODE_P (TREE_CODE (declared_type))
&& TYPE_ANONYMOUS_P (declared_type))
{
/* 7/3 In a simple-declaration, the optional init-declarator-list
can be omitted only when declaring a class (clause 9) or
enumeration (7.2), that is, when the decl-specifier-seq contains
either a class-specifier, an elaborated-type-specifier with
a class-key (9.1), or an enum-specifier. In these cases and
whenever a class-specifier or enum-specifier is present in the
decl-specifier-seq, the identifiers in these specifiers are among
the names being declared by the declaration (as class-name,
enum-names, or enumerators, depending on the syntax). In such
cases, and except for the declaration of an unnamed bit-field (9.6),
the decl-specifier-seq shall introduce one or more names into the
program, or shall redeclare a name introduced by a previous
declaration. [Example:
enum { }; // ill-formed
typedef class { }; // ill-formed
--end example] */
if (saw_typedef)
{
error ("missing type-name in typedef-declaration");
return NULL_TREE;
}
/* Anonymous unions are objects, so they can have specifiers. */;
SET_ANON_AGGR_TYPE_P (declared_type);
if (TREE_CODE (declared_type) != UNION_TYPE && !in_system_header)
pedwarn (input_location, OPT_pedantic, "ISO C++ prohibits anonymous structs");
}
else
{
if (declspecs->specs[(int)ds_inline]
|| declspecs->specs[(int)ds_virtual])
error ("%qs can only be specified for functions",
declspecs->specs[(int)ds_inline]
? "inline" : "virtual");
else if (saw_friend
&& (!current_class_type
|| current_scope () != current_class_type))
error ("%<friend%> can only be specified inside a class");
else if (declspecs->specs[(int)ds_explicit])
error ("%<explicit%> can only be specified for constructors");
else if (declspecs->storage_class)
error ("a storage class can only be specified for objects "
"and functions");
else if (declspecs->specs[(int)ds_const]
|| declspecs->specs[(int)ds_volatile]
|| declspecs->specs[(int)ds_restrict]
|| declspecs->specs[(int)ds_thread])
error ("qualifiers can only be specified for objects "
"and functions");
else if (saw_typedef)
warning (0, "%<typedef%> was ignored in this declaration");
else if (declspecs->specs[(int) ds_constexpr])
error ("%<constexpr%> cannot be used for type declarations");
}
return declared_type;
}
/* Called when a declaration is seen that contains no names to declare.
If its type is a reference to a structure, union or enum inherited
from a containing scope, shadow that tag name for the current scope
with a forward reference.
If its type defines a new named structure or union
or defines an enum, it is valid but we need not do anything here.
Otherwise, it is an error.
C++: may have to grok the declspecs to learn about static,
complain for anonymous unions.
Returns the TYPE declared -- or NULL_TREE if none. */
tree
shadow_tag (cp_decl_specifier_seq *declspecs)
{
tree t = check_tag_decl (declspecs);
if (!t)
return NULL_TREE;
if (declspecs->attributes)
{
warning (0, "attribute ignored in declaration of %q+#T", t);
warning (0, "attribute for %q+#T must follow the %qs keyword",
t, class_key_or_enum_as_string (t));
}
if (maybe_process_partial_specialization (t) == error_mark_node)
return NULL_TREE;
/* This is where the variables in an anonymous union are
declared. An anonymous union declaration looks like:
union { ... } ;
because there is no declarator after the union, the parser
sends that declaration here. */
if (ANON_AGGR_TYPE_P (t))
{
fixup_anonymous_aggr (t);
if (TYPE_FIELDS (t))
{
tree decl = grokdeclarator (/*declarator=*/NULL,
declspecs, NORMAL, 0, NULL);
finish_anon_union (decl);
}
}
return t;
}
/* Decode a "typename", such as "int **", returning a ..._TYPE node. */
tree
groktypename (cp_decl_specifier_seq *type_specifiers,
const cp_declarator *declarator,
bool is_template_arg)
{
tree attrs;
tree type;
enum decl_context context
= is_template_arg ? TEMPLATE_TYPE_ARG : TYPENAME;
attrs = type_specifiers->attributes;
type_specifiers->attributes = NULL_TREE;
type = grokdeclarator (declarator, type_specifiers, context, 0, &attrs);
if (attrs && type != error_mark_node)
{
if (CLASS_TYPE_P (type))
warning (OPT_Wattributes, "ignoring attributes applied to class type %qT "
"outside of definition", type);
else if (MAYBE_CLASS_TYPE_P (type))
/* A template type parameter or other dependent type. */
warning (OPT_Wattributes, "ignoring attributes applied to dependent "
"type %qT without an associated declaration", type);
else
cplus_decl_attributes (&type, attrs, 0);
}
return type;
}
/* Process a DECLARATOR for a function-scope variable declaration,
namespace-scope variable declaration, or function declaration.
(Function definitions go through start_function; class member
declarations appearing in the body of the class go through
grokfield.) The DECL corresponding to the DECLARATOR is returned.
If an error occurs, the error_mark_node is returned instead.
DECLSPECS are the decl-specifiers for the declaration. INITIALIZED is
SD_INITIALIZED if an explicit initializer is present, or SD_DEFAULTED
for an explicitly defaulted function, or SD_DELETED for an explicitly
deleted function, but 0 (SD_UNINITIALIZED) if this is a variable
implicitly initialized via a default constructor. ATTRIBUTES and
PREFIX_ATTRIBUTES are GNU attributes associated with this declaration.
*PUSHED_SCOPE_P is set to the scope entered in this function, if any; if
set, the caller is responsible for calling pop_scope. */
tree
start_decl (const cp_declarator *declarator,
cp_decl_specifier_seq *declspecs,
int initialized,
tree attributes,
tree prefix_attributes,
tree *pushed_scope_p)
{
tree decl;
tree context;
bool was_public;
int flags;
bool alias;
*pushed_scope_p = NULL_TREE;
/* An object declared as __attribute__((deprecated)) suppresses
warnings of uses of other deprecated items. */
if (lookup_attribute ("deprecated", attributes))
deprecated_state = DEPRECATED_SUPPRESS;
attributes = chainon (attributes, prefix_attributes);
decl = grokdeclarator (declarator, declspecs, NORMAL, initialized,
&attributes);
deprecated_state = DEPRECATED_NORMAL;
if (decl == NULL_TREE || TREE_CODE (decl) == VOID_TYPE
|| decl == error_mark_node)
return error_mark_node;
context = CP_DECL_CONTEXT (decl);
if (context != global_namespace)
*pushed_scope_p = push_scope (context);
if (initialized)
/* Is it valid for this decl to have an initializer at all?
If not, set INITIALIZED to zero, which will indirectly
tell `cp_finish_decl' to ignore the initializer once it is parsed. */
switch (TREE_CODE (decl))
{
case TYPE_DECL:
error ("typedef %qD is initialized (use decltype instead)", decl);
return error_mark_node;
case FUNCTION_DECL:
if (initialized == SD_DELETED)
/* We'll handle the rest of the semantics later, but we need to
set this now so it's visible to duplicate_decls. */
DECL_DELETED_FN (decl) = 1;
break;
default:
break;
}
if (initialized)
{
if (! toplevel_bindings_p ()
&& DECL_EXTERNAL (decl))
warning (0, "declaration of %q#D has %<extern%> and is initialized",
decl);
DECL_EXTERNAL (decl) = 0;
if (toplevel_bindings_p ())
TREE_STATIC (decl) = 1;
}
alias = lookup_attribute ("alias", DECL_ATTRIBUTES (decl)) != 0;
if (alias && TREE_CODE (decl) == FUNCTION_DECL)
record_key_method_defined (decl);
/* If this is a typedef that names the class for linkage purposes
(7.1.3p8), apply any attributes directly to the type. */
if (TREE_CODE (decl) == TYPE_DECL
&& TAGGED_TYPE_P (TREE_TYPE (decl))
&& decl == TYPE_NAME (TYPE_MAIN_VARIANT (TREE_TYPE (decl))))
flags = ATTR_FLAG_TYPE_IN_PLACE;
else
flags = 0;
/* Set attributes here so if duplicate decl, will have proper attributes. */
cplus_decl_attributes (&decl, attributes, flags);
/* Dllimported symbols cannot be defined. Static data members (which
can be initialized in-class and dllimported) go through grokfield,
not here, so we don't need to exclude those decls when checking for
a definition. */
if (initialized && DECL_DLLIMPORT_P (decl))
{
error ("definition of %q#D is marked %<dllimport%>", decl);
DECL_DLLIMPORT_P (decl) = 0;
}
/* If #pragma weak was used, mark the decl weak now. */
maybe_apply_pragma_weak (decl);
if (TREE_CODE (decl) == FUNCTION_DECL
&& DECL_DECLARED_INLINE_P (decl)
&& DECL_UNINLINABLE (decl)
&& lookup_attribute ("noinline", DECL_ATTRIBUTES (decl)))
warning (0, "inline function %q+D given attribute noinline", decl);
if (TYPE_P (context) && COMPLETE_TYPE_P (complete_type (context)))
{
if (TREE_CODE (decl) == VAR_DECL)
{
tree field = lookup_field (context, DECL_NAME (decl), 0, false);
if (field == NULL_TREE || TREE_CODE (field) != VAR_DECL)
error ("%q#D is not a static member of %q#T", decl, context);
else
{
if (DECL_CONTEXT (field) != context)
{
if (!same_type_p (DECL_CONTEXT (field), context))
permerror (input_location, "ISO C++ does not permit %<%T::%D%> "
"to be defined as %<%T::%D%>",
DECL_CONTEXT (field), DECL_NAME (decl),
context, DECL_NAME (decl));
DECL_CONTEXT (decl) = DECL_CONTEXT (field);
}
if (processing_specialization
&& template_class_depth (context) == 0
&& CLASSTYPE_TEMPLATE_SPECIALIZATION (context))
error ("template header not allowed in member definition "
"of explicitly specialized class");
/* Static data member are tricky; an in-class initialization
still doesn't provide a definition, so the in-class
declaration will have DECL_EXTERNAL set, but will have an
initialization. Thus, duplicate_decls won't warn
about this situation, and so we check here. */
if (initialized && DECL_INITIALIZED_IN_CLASS_P (field))
error ("duplicate initialization of %qD", decl);
if (duplicate_decls (decl, field, /*newdecl_is_friend=*/false))
decl = field;
if (declspecs->specs[(int) ds_constexpr]
&& !DECL_DECLARED_CONSTEXPR_P (field))
error ("%qD declared %<constexpr%> outside its class", field);
}
}
else
{
tree field = check_classfn (context, decl,
(processing_template_decl
> template_class_depth (context))
? current_template_parms
: NULL_TREE);
if (field && field != error_mark_node
&& duplicate_decls (decl, field,
/*newdecl_is_friend=*/false))
decl = field;
}
/* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
DECL_IN_AGGR_P (decl) = 0;
/* Do not mark DECL as an explicit specialization if it was not
already marked as an instantiation; a declaration should
never be marked as a specialization unless we know what
template is being specialized. */
if (DECL_LANG_SPECIFIC (decl) && DECL_USE_TEMPLATE (decl))
{
SET_DECL_TEMPLATE_SPECIALIZATION (decl);
/* [temp.expl.spec] An explicit specialization of a static data
member of a template is a definition if the declaration
includes an initializer; otherwise, it is a declaration.
We check for processing_specialization so this only applies
to the new specialization syntax. */
if (!initialized && processing_specialization)
DECL_EXTERNAL (decl) = 1;
}
if (DECL_EXTERNAL (decl) && ! DECL_TEMPLATE_SPECIALIZATION (decl)
/* Aliases are definitions. */
&& !alias)
permerror (input_location, "declaration of %q#D outside of class is not definition",
decl);
}
was_public = TREE_PUBLIC (decl);
/* Enter this declaration into the symbol table. */
decl = maybe_push_decl (decl);
if (processing_template_decl)
decl = push_template_decl (decl);
if (decl == error_mark_node)
return error_mark_node;
/* Tell the back end to use or not use .common as appropriate. If we say
-fconserve-space, we want this to save .data space, at the expense of
wrong semantics. If we say -fno-conserve-space, we want this to
produce errors about redefs; to do this we force variables into the
data segment. */
if (flag_conserve_space
&& TREE_CODE (decl) == VAR_DECL
&& TREE_PUBLIC (decl)
&& !DECL_THREAD_LOCAL_P (decl)
&& !have_global_bss_p ())
DECL_COMMON (decl) = 1;
if (TREE_CODE (decl) == VAR_DECL
&& DECL_NAMESPACE_SCOPE_P (decl) && !TREE_PUBLIC (decl) && !was_public
&& !DECL_THIS_STATIC (decl) && !DECL_ARTIFICIAL (decl))
{
/* This is a const variable with implicit 'static'. Set
DECL_THIS_STATIC so we can tell it from variables that are
!TREE_PUBLIC because of the anonymous namespace. */
gcc_assert (CP_TYPE_CONST_P (TREE_TYPE (decl)) || errorcount);
DECL_THIS_STATIC (decl) = 1;
}
if (!processing_template_decl && TREE_CODE (decl) == VAR_DECL)
start_decl_1 (decl, initialized);
return decl;
}
/* Process the declaration of a variable DECL. INITIALIZED is true
iff DECL is explicitly initialized. (INITIALIZED is false if the
variable is initialized via an implicitly-called constructor.)
This function must be called for ordinary variables (including, for
example, implicit instantiations of templates), but must not be
called for template declarations. */
void
start_decl_1 (tree decl, bool initialized)
{
tree type;
bool complete_p;
bool aggregate_definition_p;
gcc_assert (!processing_template_decl);
if (error_operand_p (decl))
return;
gcc_assert (TREE_CODE (decl) == VAR_DECL);
type = TREE_TYPE (decl);
complete_p = COMPLETE_TYPE_P (type);
aggregate_definition_p = MAYBE_CLASS_TYPE_P (type) && !DECL_EXTERNAL (decl);
/* If an explicit initializer is present, or if this is a definition
of an aggregate, then we need a complete type at this point.
(Scalars are always complete types, so there is nothing to
check.) This code just sets COMPLETE_P; errors (if necessary)
are issued below. */
if ((initialized || aggregate_definition_p)
&& !complete_p
&& COMPLETE_TYPE_P (complete_type (type)))
{
complete_p = true;
/* We will not yet have set TREE_READONLY on DECL if the type
was "const", but incomplete, before this point. But, now, we
have a complete type, so we can try again. */
cp_apply_type_quals_to_decl (cp_type_quals (type), decl);
}
if (initialized)
/* Is it valid for this decl to have an initializer at all? */
{
/* Don't allow initializations for incomplete types except for
arrays which might be completed by the initialization. */
if (complete_p)
; /* A complete type is ok. */
else if (type_uses_auto (type))
; /* An auto type is ok. */
else if (TREE_CODE (type) != ARRAY_TYPE)
{
error ("variable %q#D has initializer but incomplete type", decl);
type = TREE_TYPE (decl) = error_mark_node;
}
else if (!COMPLETE_TYPE_P (complete_type (TREE_TYPE (type))))
{
if (DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl))
error ("elements of array %q#D have incomplete type", decl);
/* else we already gave an error in start_decl. */
}
}
else if (aggregate_definition_p && !complete_p)
{
if (type_uses_auto (type))
error ("declaration of %q#D has no initializer", decl);
else
error ("aggregate %q#D has incomplete type and cannot be defined",
decl);
/* Change the type so that assemble_variable will give
DECL an rtl we can live with: (mem (const_int 0)). */
type = TREE_TYPE (decl) = error_mark_node;
}
/* Create a new scope to hold this declaration if necessary.
Whether or not a new scope is necessary cannot be determined
until after the type has been completed; if the type is a
specialization of a class template it is not until after
instantiation has occurred that TYPE_HAS_NONTRIVIAL_DESTRUCTOR
will be set correctly. */
maybe_push_cleanup_level (type);
}
/* Handle initialization of references. DECL, TYPE, and INIT have the
same meaning as in cp_finish_decl. *CLEANUP must be NULL on entry,
but will be set to a new CLEANUP_STMT if a temporary is created
that must be destroyed subsequently.
Returns an initializer expression to use to initialize DECL, or
NULL if the initialization can be performed statically.
Quotes on semantics can be found in ARM 8.4.3. */
static tree
grok_reference_init (tree decl, tree type, tree init, tree *cleanup)
{
tree tmp;
if (init == NULL_TREE)
{
if ((DECL_LANG_SPECIFIC (decl) == 0
|| DECL_IN_AGGR_P (decl) == 0)
&& ! DECL_THIS_EXTERN (decl))
error ("%qD declared as reference but not initialized", decl);
return NULL_TREE;
}
if (TREE_CODE (init) == TREE_LIST)
init = build_x_compound_expr_from_list (init, ELK_INIT,
tf_warning_or_error);
if (TREE_CODE (TREE_TYPE (type)) != ARRAY_TYPE
&& TREE_CODE (TREE_TYPE (init)) == ARRAY_TYPE)
/* Note: default conversion is only called in very special cases. */
init = decay_conversion (init);
/* Convert INIT to the reference type TYPE. This may involve the
creation of a temporary, whose lifetime must be the same as that
of the reference. If so, a DECL_EXPR for the temporary will be
added just after the DECL_EXPR for DECL. That's why we don't set
DECL_INITIAL for local references (instead assigning to them
explicitly); we need to allow the temporary to be initialized
first. */
tmp = initialize_reference (type, init, decl, cleanup, tf_warning_or_error);
if (tmp == error_mark_node)
return NULL_TREE;
else if (tmp == NULL_TREE)
{
error ("cannot initialize %qT from %qT", type, TREE_TYPE (init));
return NULL_TREE;
}
if (TREE_STATIC (decl) && !TREE_CONSTANT (tmp))
return tmp;
DECL_INITIAL (decl) = tmp;
return NULL_TREE;
}
/* Subroutine of check_initializer. We're initializing a DECL of
std::initializer_list<T> TYPE from a braced-init-list INIT, and need to
extend the lifetime of the underlying array to match that of the decl,
just like for reference initialization. CLEANUP is as for
grok_reference_init. */
static tree
build_init_list_var_init (tree decl, tree type, tree init, tree *array_init,
tree *cleanup)
{
tree aggr_init, array, arrtype;
init = perform_implicit_conversion (type, init, tf_warning_or_error);
if (error_operand_p (init))
return error_mark_node;
aggr_init = TARGET_EXPR_INITIAL (init);
array = CONSTRUCTOR_ELT (aggr_init, 0)->value;
arrtype = TREE_TYPE (array);
STRIP_NOPS (array);
gcc_assert (TREE_CODE (array) == ADDR_EXPR);
array = TREE_OPERAND (array, 0);
/* If the array is constant, finish_compound_literal already made it a
static variable and we don't need to do anything here. */
if (decl && TREE_CODE (array) == TARGET_EXPR)
{
tree var = set_up_extended_ref_temp (decl, array, cleanup, array_init);
var = build_address (var);
var = convert (arrtype, var);
CONSTRUCTOR_ELT (aggr_init, 0)->value = var;
}
return init;
}
/* Designated initializers in arrays are not supported in GNU C++.
The parser cannot detect this error since it does not know whether
a given brace-enclosed initializer is for a class type or for an
array. This function checks that CE does not use a designated
initializer. If it does, an error is issued. Returns true if CE
is valid, i.e., does not have a designated initializer. */
static bool
check_array_designated_initializer (const constructor_elt *ce)
{
/* Designated initializers for array elements are not supported. */
if (ce->index)
{
/* The parser only allows identifiers as designated
initializers. */
if (ce->index == error_mark_node)
error ("name used in a GNU-style designated "
"initializer for an array");
else if (TREE_CODE (ce->index) == INTEGER_CST)
/* An index added by reshape_init. */
return true;
else
{
gcc_assert (TREE_CODE (ce->index) == IDENTIFIER_NODE);
error ("name %qD used in a GNU-style designated "
"initializer for an array", ce->index);
}
return false;
}
return true;
}
/* When parsing `int a[] = {1, 2};' we don't know the size of the
array until we finish parsing the initializer. If that's the
situation we're in, update DECL accordingly. */
static void
maybe_deduce_size_from_array_init (tree decl, tree init)
{
tree type = TREE_TYPE (decl);
if (TREE_CODE (type) == ARRAY_TYPE
&& TYPE_DOMAIN (type) == NULL_TREE
&& TREE_CODE (decl) != TYPE_DECL)
{
/* do_default is really a C-ism to deal with tentative definitions.
But let's leave it here to ease the eventual merge. */
int do_default = !DECL_EXTERNAL (decl);
tree initializer = init ? init : DECL_INITIAL (decl);
int failure = 0;
/* Check that there are no designated initializers in INIT, as
those are not supported in GNU C++, and as the middle-end
will crash if presented with a non-numeric designated
initializer. */
if (initializer && TREE_CODE (initializer) == CONSTRUCTOR)
{
VEC(constructor_elt,gc) *v = CONSTRUCTOR_ELTS (initializer);
constructor_elt *ce;
HOST_WIDE_INT i;
FOR_EACH_VEC_ELT (constructor_elt, v, i, ce)
if (!check_array_designated_initializer (ce))
failure = 1;
}
if (!failure)
{
failure = cp_complete_array_type (&TREE_TYPE (decl), initializer,
do_default);
if (failure == 1)
{
error ("initializer fails to determine size of %qD", decl);
TREE_TYPE (decl) = error_mark_node;
}
else if (failure == 2)
{
if (do_default)
{
error ("array size missing in %qD", decl);
TREE_TYPE (decl) = error_mark_node;
}
/* If a `static' var's size isn't known, make it extern as
well as static, so it does not get allocated. If it's not
`static', then don't mark it extern; finish_incomplete_decl
will give it a default size and it will get allocated. */
else if (!pedantic && TREE_STATIC (decl) && !TREE_PUBLIC (decl))
DECL_EXTERNAL (decl) = 1;
}
else if (failure == 3)
{
error ("zero-size array %qD", decl);
TREE_TYPE (decl) = error_mark_node;
}
}
cp_apply_type_quals_to_decl (cp_type_quals (TREE_TYPE (decl)), decl);
relayout_decl (decl);
}
}
/* Set DECL_SIZE, DECL_ALIGN, etc. for DECL (a VAR_DECL), and issue
any appropriate error messages regarding the layout. */
static void
layout_var_decl (tree decl)
{
tree type;
type = TREE_TYPE (decl);
if (type == error_mark_node)
return;
/* If we haven't already layed out this declaration, do so now.
Note that we must not call complete type for an external object
because it's type might involve templates that we are not
supposed to instantiate yet. (And it's perfectly valid to say
`extern X x' for some incomplete type `X'.) */
if (!DECL_EXTERNAL (decl))
complete_type (type);
if (!DECL_SIZE (decl)
&& TREE_TYPE (decl) != error_mark_node
&& (COMPLETE_TYPE_P (type)
|| (TREE_CODE (type) == ARRAY_TYPE
&& !TYPE_DOMAIN (type)
&& COMPLETE_TYPE_P (TREE_TYPE (type)))))
layout_decl (decl, 0);
if (!DECL_EXTERNAL (decl) && DECL_SIZE (decl) == NULL_TREE)
{
/* An automatic variable with an incomplete type: that is an error.
Don't talk about array types here, since we took care of that
message in grokdeclarator. */
error ("storage size of %qD isn%'t known", decl);
TREE_TYPE (decl) = error_mark_node;
}
#if 0
/* Keep this code around in case we later want to control debug info
based on whether a type is "used". (jason 1999-11-11) */
else if (!DECL_EXTERNAL (decl) && MAYBE_CLASS_TYPE_P (ttype))
/* Let debugger know it should output info for this type. */
note_debug_info_needed (ttype);
if (TREE_STATIC (decl) && DECL_CLASS_SCOPE_P (decl))
note_debug_info_needed (DECL_CONTEXT (decl));
#endif
if ((DECL_EXTERNAL (decl) || TREE_STATIC (decl))
&& DECL_SIZE (decl) != NULL_TREE
&& ! TREE_CONSTANT (DECL_SIZE (decl)))
{
if (TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST)
constant_expression_warning (DECL_SIZE (decl));
else
{
error ("storage size of %qD isn%'t constant", decl);
TREE_TYPE (decl) = error_mark_node;
}
}
}
/* If a local static variable is declared in an inline function, or if
we have a weak definition, we must endeavor to create only one
instance of the variable at link-time. */
void
maybe_commonize_var (tree decl)
{
/* Static data in a function with comdat linkage also has comdat
linkage. */
if (TREE_STATIC (decl)
/* Don't mess with __FUNCTION__. */
&& ! DECL_ARTIFICIAL (decl)
&& DECL_FUNCTION_SCOPE_P (decl)
&& vague_linkage_p (DECL_CONTEXT (decl)))
{
if (flag_weak)
{
/* With weak symbols, we simply make the variable COMDAT;
that will cause copies in multiple translations units to
be merged. */
comdat_linkage (decl);
}
else
{
if (DECL_INITIAL (decl) == NULL_TREE
|| DECL_INITIAL (decl) == error_mark_node)
{
/* Without weak symbols, we can use COMMON to merge
uninitialized variables. */
TREE_PUBLIC (decl) = 1;
DECL_COMMON (decl) = 1;
}
else
{
/* While for initialized variables, we must use internal
linkage -- which means that multiple copies will not
be merged. */
TREE_PUBLIC (decl) = 0;
DECL_COMMON (decl) = 0;
warning_at (input_location, 0,
"sorry: semantics of inline function static "
"data %q+#D are wrong (you%'ll wind up "
"with multiple copies)", decl);
warning_at (DECL_SOURCE_LOCATION (decl), 0,
" you can work around this by removing "
"the initializer");
}
}
}
else if (DECL_LANG_SPECIFIC (decl) && DECL_COMDAT (decl))
/* Set it up again; we might have set DECL_INITIAL since the last
time. */
comdat_linkage (decl);
}
/* Issue an error message if DECL is an uninitialized const variable. */
static void
check_for_uninitialized_const_var (tree decl)
{
tree type = strip_array_types (TREE_TYPE (decl));
/* ``Unless explicitly declared extern, a const object does not have
external linkage and must be initialized. ($8.4; $12.1)'' ARM
7.1.6 */
if (TREE_CODE (decl) == VAR_DECL
&& TREE_CODE (type) != REFERENCE_TYPE
&& CP_TYPE_CONST_P (type)
&& (!TYPE_NEEDS_CONSTRUCTING (type)
|| !type_has_user_provided_default_constructor (type))
&& !DECL_INITIAL (decl))
{
permerror (DECL_SOURCE_LOCATION (decl),
"uninitialized const %qD", decl);
if (CLASS_TYPE_P (type)
&& !type_has_user_provided_default_constructor (type))
{
tree defaulted_ctor;
inform (DECL_SOURCE_LOCATION (TYPE_MAIN_DECL (type)),
"%q#T has no user-provided default constructor", type);
defaulted_ctor = in_class_defaulted_default_constructor (type);
if (defaulted_ctor)
inform (DECL_SOURCE_LOCATION (defaulted_ctor),
"constructor is not user-provided because it is "
"explicitly defaulted in the class body");
}
}
}
/* Structure holding the current initializer being processed by reshape_init.
CUR is a pointer to the current element being processed, END is a pointer
after the last element present in the initializer. */
typedef struct reshape_iterator_t
{
constructor_elt *cur;
constructor_elt *end;
} reshape_iter;
static tree reshape_init_r (tree, reshape_iter *, bool);
/* FIELD is a FIELD_DECL or NULL. In the former case, the value
returned is the next FIELD_DECL (possibly FIELD itself) that can be
initialized. If there are no more such fields, the return value
will be NULL. */
tree
next_initializable_field (tree field)
{
while (field
&& (TREE_CODE (field) != FIELD_DECL
|| (DECL_C_BIT_FIELD (field) && !DECL_NAME (field))
|| DECL_ARTIFICIAL (field)))
field = DECL_CHAIN (field);
return field;
}
/* Subroutine of reshape_init_array and reshape_init_vector, which does
the actual work. ELT_TYPE is the element type of the array. MAX_INDEX is an
INTEGER_CST representing the size of the array minus one (the maximum index),
or NULL_TREE if the array was declared without specifying the size. D is
the iterator within the constructor. */
static tree
reshape_init_array_1 (tree elt_type, tree max_index, reshape_iter *d)
{
tree new_init;
bool sized_array_p = (max_index != NULL_TREE);
unsigned HOST_WIDE_INT max_index_cst = 0;
unsigned HOST_WIDE_INT index;
/* The initializer for an array is always a CONSTRUCTOR. */
new_init = build_constructor (init_list_type_node, NULL);
if (sized_array_p)
{
/* Minus 1 is used for zero sized arrays. */
if (integer_all_onesp (max_index))
return new_init;
if (host_integerp (max_index, 1))
max_index_cst = tree_low_cst (max_index, 1);
/* sizetype is sign extended, not zero extended. */
else
max_index_cst = tree_low_cst (fold_convert (size_type_node, max_index),
1);
}
/* Loop until there are no more initializers. */
for (index = 0;
d->cur != d->end && (!sized_array_p || index <= max_index_cst);
++index)
{
tree elt_init;
check_array_designated_initializer (d->cur);
elt_init = reshape_init_r (elt_type, d, /*first_initializer_p=*/false);
if (elt_init == error_mark_node)
return error_mark_node;
CONSTRUCTOR_APPEND_ELT (CONSTRUCTOR_ELTS (new_init),
size_int (index), elt_init);
if (!TREE_CONSTANT (elt_init))
TREE_CONSTANT (new_init) = false;
}
return new_init;
}
/* Subroutine of reshape_init_r, processes the initializers for arrays.
Parameters are the same of reshape_init_r. */
static tree
reshape_init_array (tree type, reshape_iter *d)
{
tree max_index = NULL_TREE;
gcc_assert (TREE_CODE (type) == ARRAY_TYPE);
if (TYPE_DOMAIN (type))
max_index = array_type_nelts (type);
return reshape_init_array_1 (TREE_TYPE (type), max_index, d);
}
/* Subroutine of reshape_init_r, processes the initializers for vectors.
Parameters are the same of reshape_init_r. */
static tree
reshape_init_vector (tree type, reshape_iter *d)
{
tree max_index = NULL_TREE;
gcc_assert (TREE_CODE (type) == VECTOR_TYPE);
if (COMPOUND_LITERAL_P (d->cur->value))
{
tree value = d->cur->value;
if (!same_type_p (TREE_TYPE (value), type))
{
error ("invalid type %qT as initializer for a vector of type %qT",
TREE_TYPE (d->cur->value), type);
value = error_mark_node;
}
++d->cur;
return value;
}
/* For a vector, we initialize it as an array of the appropriate size. */
if (TREE_CODE (type) == VECTOR_TYPE)
max_index = size_int (TYPE_VECTOR_SUBPARTS (type) - 1);
return reshape_init_array_1 (TREE_TYPE (type), max_index, d);
}
/* Subroutine of reshape_init_r, processes the initializers for classes
or union. Parameters are the same of reshape_init_r. */
static tree
reshape_init_class (tree type, reshape_iter *d, bool first_initializer_p)
{
tree field;
tree new_init;
gcc_assert (CLASS_TYPE_P (type));
/* The initializer for a class is always a CONSTRUCTOR. */
new_init = build_constructor (init_list_type_node, NULL);
field = next_initializable_field (TYPE_FIELDS (type));
if (!field)
{
/* [dcl.init.aggr]
An initializer for an aggregate member that is an
empty class shall have the form of an empty
initializer-list {}. */
if (!first_initializer_p)
{
error ("initializer for %qT must be brace-enclosed", type);
return error_mark_node;
}
return new_init;
}
/* Loop through the initializable fields, gathering initializers. */
while (d->cur != d->end)
{
tree field_init;
/* Handle designated initializers, as an extension. */
if (d->cur->index)
{
field = lookup_field_1 (type, d->cur->index, /*want_type=*/false);
if (!field || TREE_CODE (field) != FIELD_DECL)
{
error ("%qT has no non-static data member named %qD", type,
d->cur->index);
return error_mark_node;
}
}
/* If we processed all the member of the class, we are done. */
if (!field)
break;
field_init = reshape_init_r (TREE_TYPE (field), d,
/*first_initializer_p=*/false);
if (field_init == error_mark_node)
return error_mark_node;
CONSTRUCTOR_APPEND_ELT (CONSTRUCTOR_ELTS (new_init), field, field_init);
/* [dcl.init.aggr]
When a union is initialized with a brace-enclosed
initializer, the braces shall only contain an
initializer for the first member of the union. */
if (TREE_CODE (type) == UNION_TYPE)
break;
field = next_initializable_field (DECL_CHAIN (field));
}
return new_init;
}
/* Subroutine of reshape_init, which processes a single initializer (part of
a CONSTRUCTOR). TYPE is the type of the variable being initialized, D is the
iterator within the CONSTRUCTOR which points to the initializer to process.
FIRST_INITIALIZER_P is true if this is the first initializer of the
outermost CONSTRUCTOR node. */
static tree
reshape_init_r (tree type, reshape_iter *d, bool first_initializer_p)
{
tree init = d->cur->value;
if (error_operand_p (init))
return error_mark_node;
/* A non-aggregate type is always initialized with a single
initializer. */
if (!CP_AGGREGATE_TYPE_P (type))
{
/* It is invalid to initialize a non-aggregate type with a
brace-enclosed initializer before C++0x.
We need to check for BRACE_ENCLOSED_INITIALIZER_P here because
of g++.old-deja/g++.mike/p7626.C: a pointer-to-member constant is
a CONSTRUCTOR (with a record type). */
if (TREE_CODE (init) == CONSTRUCTOR
&& BRACE_ENCLOSED_INITIALIZER_P (init)) /* p7626.C */
{
if (SCALAR_TYPE_P (type))
{
error ("braces around scalar initializer for type %qT", type);
init = error_mark_node;
}
else
maybe_warn_cpp0x (CPP0X_INITIALIZER_LISTS);
}
d->cur++;
return init;
}
/* [dcl.init.aggr]
All implicit type conversions (clause _conv_) are considered when
initializing the aggregate member with an initializer from an
initializer-list. If the initializer can initialize a member,
the member is initialized. Otherwise, if the member is itself a
non-empty subaggregate, brace elision is assumed and the
initializer is considered for the initialization of the first
member of the subaggregate. */
if (TREE_CODE (init) != CONSTRUCTOR
/* But don't try this for the first initializer, since that would be
looking through the outermost braces; A a2 = { a1 }; is not a
valid aggregate initialization. */
&& !first_initializer_p
&& (same_type_ignoring_top_level_qualifiers_p (type, TREE_TYPE (init))
|| can_convert_arg (type, TREE_TYPE (init), init, LOOKUP_NORMAL)))
{
d->cur++;
return init;
}
/* [dcl.init.string]
A char array (whether plain char, signed char, or unsigned char)
can be initialized by a string-literal (optionally enclosed in
braces); a wchar_t array can be initialized by a wide
string-literal (optionally enclosed in braces). */
if (TREE_CODE (type) == ARRAY_TYPE
&& char_type_p (TYPE_MAIN_VARIANT (TREE_TYPE (type))))
{
tree str_init = init;
/* Strip one level of braces if and only if they enclose a single
element (as allowed by [dcl.init.string]). */
if (!first_initializer_p
&& TREE_CODE (str_init) == CONSTRUCTOR
&& VEC_length (constructor_elt, CONSTRUCTOR_ELTS (str_init)) == 1)
{
str_init = VEC_index (constructor_elt,
CONSTRUCTOR_ELTS (str_init), 0)->value;
}
/* If it's a string literal, then it's the initializer for the array
as a whole. Otherwise, continue with normal initialization for
array types (one value per array element). */
if (TREE_CODE (str_init) == STRING_CST)
{
d->cur++;
return str_init;
}
}
/* The following cases are about aggregates. If we are not within a full
initializer already, and there is not a CONSTRUCTOR, it means that there
is a missing set of braces (that is, we are processing the case for
which reshape_init exists). */
if (!first_initializer_p)
{
if (TREE_CODE (init) == CONSTRUCTOR)
{
if (TREE_TYPE (init) && TYPE_PTRMEMFUNC_P (TREE_TYPE (init)))
/* There is no need to reshape pointer-to-member function
initializers, as they are always constructed correctly
by the front end. */
;
else if (COMPOUND_LITERAL_P (init))
/* For a nested compound literal, there is no need to reshape since
brace elision is not allowed. Even if we decided to allow it,
we should add a call to reshape_init in finish_compound_literal,
before calling digest_init, so changing this code would still
not be necessary. */
gcc_assert (!BRACE_ENCLOSED_INITIALIZER_P (init));
else
{
++d->cur;
gcc_assert (BRACE_ENCLOSED_INITIALIZER_P (init));
return reshape_init (type, init);
}
}
warning (OPT_Wmissing_braces, "missing braces around initializer for %qT",
type);
}
/* Dispatch to specialized routines. */
if (CLASS_TYPE_P (type))
return reshape_init_class (type, d, first_initializer_p);
else if (TREE_CODE (type) == ARRAY_TYPE)
return reshape_init_array (type, d);
else if (TREE_CODE (type) == VECTOR_TYPE)
return reshape_init_vector (type, d);
else
gcc_unreachable();
}
/* Undo the brace-elision allowed by [dcl.init.aggr] in a
brace-enclosed aggregate initializer.
INIT is the CONSTRUCTOR containing the list of initializers describing
a brace-enclosed initializer for an entity of the indicated aggregate TYPE.
It may not presently match the shape of the TYPE; for example:
struct S { int a; int b; };
struct S a[] = { 1, 2, 3, 4 };
Here INIT will hold a VEC of four elements, rather than a
VEC of two elements, each itself a VEC of two elements. This
routine transforms INIT from the former form into the latter. The
revised CONSTRUCTOR node is returned. */
tree
reshape_init (tree type, tree init)
{
VEC(constructor_elt, gc) *v;
reshape_iter d;
tree new_init;
gcc_assert (BRACE_ENCLOSED_INITIALIZER_P (init));
v = CONSTRUCTOR_ELTS (init);
/* An empty constructor does not need reshaping, and it is always a valid
initializer. */
if (VEC_empty (constructor_elt, v))
return init;
/* Recurse on this CONSTRUCTOR. */
d.cur = VEC_index (constructor_elt, v, 0);
d.end = d.cur + VEC_length (constructor_elt, v);
new_init = reshape_init_r (type, &d, true);
if (new_init == error_mark_node)
return error_mark_node;
/* Make sure all the element of the constructor were used. Otherwise,
issue an error about exceeding initializers. */
if (d.cur != d.end)
error ("too many initializers for %qT", type);
return new_init;
}
/* Verify array initializer. Returns true if errors have been reported. */
bool
check_array_initializer (tree decl, tree type, tree init)
{
tree element_type = TREE_TYPE (type);
/* The array type itself need not be complete, because the
initializer may tell us how many elements are in the array.
But, the elements of the array must be complete. */
if (!COMPLETE_TYPE_P (complete_type (element_type)))
{
if (decl)
error ("elements of array %q#D have incomplete type", decl);
else
error ("elements of array %q#T have incomplete type", type);
return true;
}
/* It is not valid to initialize a VLA. */
if (init
&& ((COMPLETE_TYPE_P (type) && !TREE_CONSTANT (TYPE_SIZE (type)))
|| !TREE_CONSTANT (TYPE_SIZE (element_type))))
{
if (decl)
error ("variable-sized object %qD may not be initialized", decl);
else
error ("variable-sized compound literal");
return true;
}
return false;
}
/* Subroutine of check_initializer; args are passed down from that function.
Set stmts_are_full_exprs_p to 1 across a call to build_aggr_init. */
static tree
build_aggr_init_full_exprs (tree decl, tree init, int flags)
{
int saved_stmts_are_full_exprs_p = 0;
if (building_stmt_tree ())
{
saved_stmts_are_full_exprs_p = stmts_are_full_exprs_p ();
current_stmt_tree ()->stmts_are_full_exprs_p = 1;
}
init = build_aggr_init (decl, init, flags, tf_warning_or_error);
if (building_stmt_tree ())
current_stmt_tree ()->stmts_are_full_exprs_p =
saved_stmts_are_full_exprs_p;
return init;
}
/* Verify INIT (the initializer for DECL), and record the
initialization in DECL_INITIAL, if appropriate. CLEANUP is as for
grok_reference_init.
If the return value is non-NULL, it is an expression that must be
evaluated dynamically to initialize DECL. */
static tree
check_initializer (tree decl, tree init, int flags, tree *cleanup)
{
tree type = TREE_TYPE (decl);
tree init_code = NULL;
tree extra_init = NULL_TREE;
tree core_type;
/* Things that are going to be initialized need to have complete
type. */
TREE_TYPE (decl) = type = complete_type (TREE_TYPE (decl));
if (type == error_mark_node)
/* We will have already complained. */
return NULL_TREE;
if (TREE_CODE (type) == ARRAY_TYPE)
{
if (check_array_initializer (decl, type, init))
return NULL_TREE;
}
else if (!COMPLETE_TYPE_P (type))
{
error ("%qD has incomplete type", decl);
TREE_TYPE (decl) = error_mark_node;
return NULL_TREE;
}
else
/* There is no way to make a variable-sized class type in GNU C++. */
gcc_assert (TREE_CONSTANT (TYPE_SIZE (type)));
if (init && BRACE_ENCLOSED_INITIALIZER_P (init))
{
int init_len = VEC_length (constructor_elt, CONSTRUCTOR_ELTS (init));
if (SCALAR_TYPE_P (type))
{
if (init_len == 0)
{
maybe_warn_cpp0x (CPP0X_INITIALIZER_LISTS);
init = build_zero_init (type, NULL_TREE, false);
}
else if (init_len != 1)
{
error ("scalar object %qD requires one element in initializer",
decl);
TREE_TYPE (decl) = error_mark_node;
return NULL_TREE;
}
}
}
if (TREE_CODE (decl) == CONST_DECL)
{
gcc_assert (TREE_CODE (type) != REFERENCE_TYPE);
DECL_INITIAL (decl) = init;
gcc_assert (init != NULL_TREE);
init = NULL_TREE;
}
else if (!init && DECL_REALLY_EXTERN (decl))
;
else if (TREE_CODE (type) == REFERENCE_TYPE)
init = grok_reference_init (decl, type, init, cleanup);
else if (init || TYPE_NEEDS_CONSTRUCTING (type))
{
if (!init)
check_for_uninitialized_const_var (decl);
/* Do not reshape constructors of vectors (they don't need to be
reshaped. */
else if (BRACE_ENCLOSED_INITIALIZER_P (init))
{
if (is_std_init_list (type))
init = build_init_list_var_init (decl, type, init,
&extra_init, cleanup);
else if (TYPE_NON_AGGREGATE_CLASS (type))
{
/* Don't reshape if the class has constructors. */
if (cxx_dialect == cxx98)
error ("in C++98 %qD must be initialized by constructor, "
"not by %<{...}%>",
decl);
}
else if (TREE_CODE (type) == VECTOR_TYPE && TYPE_VECTOR_OPAQUE (type))
{
error ("opaque vector types cannot be initialized");
init = error_mark_node;
}
else
init = reshape_init (type, init);
}
/* If DECL has an array type without a specific bound, deduce the
array size from the initializer. */
maybe_deduce_size_from_array_init (decl, init);
type = TREE_TYPE (decl);
if (type == error_mark_node)
return NULL_TREE;
if (TYPE_NEEDS_CONSTRUCTING (type)
|| (CLASS_TYPE_P (type)
&& !(init && BRACE_ENCLOSED_INITIALIZER_P (init))))
{
init_code = build_aggr_init_full_exprs (decl, init, flags);
/* If this is a constexpr initializer, expand_default_init will
have returned an INIT_EXPR rather than a CALL_EXPR. In that
case, pull the initializer back out and pass it down into
store_init_value. */
while (TREE_CODE (init_code) == EXPR_STMT
|| TREE_CODE (init_code) == CONVERT_EXPR)
init_code = TREE_OPERAND (init_code, 0);
if (TREE_CODE (init_code) == INIT_EXPR)
{
init = TREE_OPERAND (init_code, 1);
init_code = NULL_TREE;
/* Don't call digest_init; it's unnecessary and will complain
about aggregate initialization of non-aggregate classes. */
flags |= LOOKUP_ALREADY_DIGESTED;
}
else if (DECL_DECLARED_CONSTEXPR_P (decl))
{
/* Declared constexpr, but no suitable initializer; massage
init appropriately so we can pass it into store_init_value
for the error. */
if (init && BRACE_ENCLOSED_INITIALIZER_P (init))
init = finish_compound_literal (type, init,
tf_warning_or_error);
else if (CLASS_TYPE_P (type)
&& (!init || TREE_CODE (init) == TREE_LIST))
{
init = build_functional_cast (type, init, tf_none);
if (init != error_mark_node)
TARGET_EXPR_DIRECT_INIT_P (init) = true;
}
init_code = NULL_TREE;
}
else
init = NULL_TREE;
}
if (init && TREE_CODE (init) != TREE_VEC)
{
init_code = store_init_value (decl, init, flags);
if (pedantic && TREE_CODE (type) == ARRAY_TYPE
&& DECL_INITIAL (decl)
&& TREE_CODE (DECL_INITIAL (decl)) == STRING_CST
&& PAREN_STRING_LITERAL_P (DECL_INITIAL (decl)))
warning (0, "array %qD initialized by parenthesized string literal %qE",
decl, DECL_INITIAL (decl));
init = NULL;
}
}
else
{
if (CLASS_TYPE_P (core_type = strip_array_types (type))
&& (CLASSTYPE_READONLY_FIELDS_NEED_INIT (core_type)
|| CLASSTYPE_REF_FIELDS_NEED_INIT (core_type)))
diagnose_uninitialized_cst_or_ref_member (core_type, /*using_new=*/false,
/*complain=*/true);
check_for_uninitialized_const_var (decl);
}
if (init && init != error_mark_node)
init_code = build2 (INIT_EXPR, type, decl, init);
if (extra_init)
init_code = add_stmt_to_compound (extra_init, init_code);
if (init_code && DECL_IN_AGGR_P (decl))
{
static int explained = 0;
if (cxx_dialect < cxx0x)
error ("initializer invalid for static member with constructor");
else
error ("non-constant in-class initialization invalid for static "
"member %qD", decl);
if (!explained)
{
error ("(an out of class initialization is required)");
explained = 1;
}
}
return init_code;
}
/* If DECL is not a local variable, give it RTL. */
static void
make_rtl_for_nonlocal_decl (tree decl, tree init, const char* asmspec)
{
int toplev = toplevel_bindings_p ();
int defer_p;
const char *filename;
/* Set the DECL_ASSEMBLER_NAME for the object. */
if (asmspec)
{
/* The `register' keyword, when used together with an
asm-specification, indicates that the variable should be
placed in a particular register. */
if (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl))
{
set_user_assembler_name (decl, asmspec);
DECL_HARD_REGISTER (decl) = 1;
}
else
{
if (TREE_CODE (decl) == FUNCTION_DECL
&& DECL_BUILT_IN_CLASS (decl) == BUILT_IN_NORMAL)
set_builtin_user_assembler_name (decl, asmspec);
set_user_assembler_name (decl, asmspec);
}
}
/* Handle non-variables up front. */
if (TREE_CODE (decl) != VAR_DECL)
{
rest_of_decl_compilation (decl, toplev, at_eof);
return;
}
/* If we see a class member here, it should be a static data
member. */
if (DECL_LANG_SPECIFIC (decl) && DECL_IN_AGGR_P (decl))
{
gcc_assert (TREE_STATIC (decl));
/* An in-class declaration of a static data member should be
external; it is only a declaration, and not a definition. */
if (init == NULL_TREE)
gcc_assert (DECL_EXTERNAL (decl) || !TREE_PUBLIC (decl));
}
/* We don't create any RTL for local variables. */
if (DECL_FUNCTION_SCOPE_P (decl) && !TREE_STATIC (decl))
return;
/* We defer emission of local statics until the corresponding
DECL_EXPR is expanded. */
defer_p = DECL_FUNCTION_SCOPE_P (decl) || DECL_VIRTUAL_P (decl);
/* We try to defer namespace-scope static constants so that they are
not emitted into the object file unnecessarily. */
filename = input_filename;
if (!DECL_VIRTUAL_P (decl)
&& TREE_READONLY (decl)
&& DECL_INITIAL (decl) != NULL_TREE
&& DECL_INITIAL (decl) != error_mark_node
&& filename != NULL
&& ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl))
&& toplev
&& !TREE_PUBLIC (decl))
{
/* Fool with the linkage of static consts according to #pragma
interface. */
struct c_fileinfo *finfo = get_fileinfo (filename);
if (!finfo->interface_unknown && !TREE_PUBLIC (decl))
{
TREE_PUBLIC (decl) = 1;
DECL_EXTERNAL (decl) = finfo->interface_only;
}
defer_p = 1;
}
/* Likewise for template instantiations. */
else if (DECL_LANG_SPECIFIC (decl)
&& DECL_IMPLICIT_INSTANTIATION (decl))
defer_p = 1;
/* If we're not deferring, go ahead and assemble the variable. */
if (!defer_p)
rest_of_decl_compilation (decl, toplev, at_eof);
}
/* walk_tree helper for wrap_temporary_cleanups, below. */
static tree
wrap_cleanups_r (tree *stmt_p, int *walk_subtrees, void *data)
{
if (TYPE_P (*stmt_p))
{
*walk_subtrees = 0;
return NULL_TREE;
}
if (TREE_CODE (*stmt_p) == TARGET_EXPR)
{
tree guard = (tree)data;
tree tcleanup = TARGET_EXPR_CLEANUP (*stmt_p);
tcleanup = build2 (TRY_CATCH_EXPR, void_type_node, tcleanup, guard);
/* Tell honor_protect_cleanup_actions to handle this as a separate
cleanup. */
TRY_CATCH_IS_CLEANUP (tcleanup) = 1;
TARGET_EXPR_CLEANUP (*stmt_p) = tcleanup;
}
return NULL_TREE;
}
/* We're initializing a local variable which has a cleanup GUARD. If there
are any temporaries used in the initializer INIT of this variable, we
need to wrap their cleanups with TRY_CATCH_EXPR (, GUARD) so that the
variable will be cleaned up properly if one of them throws.
Unfortunately, there's no way to express this properly in terms of
nesting, as the regions for the temporaries overlap the region for the
variable itself; if there are two temporaries, the variable needs to be
the first thing destroyed if either of them throws. However, we only
want to run the variable's cleanup if it actually got constructed. So
we need to guard the temporary cleanups with the variable's cleanup if
they are run on the normal path, but not if they are run on the
exceptional path. We implement this by telling
honor_protect_cleanup_actions to strip the variable cleanup from the
exceptional path. */
static void
wrap_temporary_cleanups (tree init, tree guard)
{
cp_walk_tree_without_duplicates (&init, wrap_cleanups_r, (void *)guard);
}
/* Generate code to initialize DECL (a local variable). */
static void
initialize_local_var (tree decl, tree init)
{
tree type = TREE_TYPE (decl);
tree cleanup;
int already_used;
gcc_assert (TREE_CODE (decl) == VAR_DECL
|| TREE_CODE (decl) == RESULT_DECL);
gcc_assert (!TREE_STATIC (decl));
if (DECL_SIZE (decl) == NULL_TREE)
{
/* If we used it already as memory, it must stay in memory. */
DECL_INITIAL (decl) = NULL_TREE;
TREE_ADDRESSABLE (decl) = TREE_USED (decl);
return;
}
if (type == error_mark_node)
return;
/* Compute and store the initial value. */
already_used = TREE_USED (decl) || TREE_USED (type);
if (TREE_USED (type))
DECL_READ_P (decl) = 1;
/* Generate a cleanup, if necessary. */
cleanup = cxx_maybe_build_cleanup (decl);
/* Perform the initialization. */
if (init)
{
int saved_stmts_are_full_exprs_p;
/* If we're only initializing a single object, guard the destructors
of any temporaries used in its initializer with its destructor.
This isn't right for arrays because each element initialization is
a full-expression. */
if (cleanup && TREE_CODE (type) != ARRAY_TYPE)
wrap_temporary_cleanups (init, cleanup);
gcc_assert (building_stmt_tree ());
saved_stmts_are_full_exprs_p = stmts_are_full_exprs_p ();
current_stmt_tree ()->stmts_are_full_exprs_p = 1;
finish_expr_stmt (init);
current_stmt_tree ()->stmts_are_full_exprs_p =
saved_stmts_are_full_exprs_p;
}
/* Set this to 0 so we can tell whether an aggregate which was
initialized was ever used. Don't do this if it has a
destructor, so we don't complain about the 'resource
allocation is initialization' idiom. Now set
attribute((unused)) on types so decls of that type will be
marked used. (see TREE_USED, above.) */
if (TYPE_NEEDS_CONSTRUCTING (type)
&& ! already_used
&& TYPE_HAS_TRIVIAL_DESTRUCTOR (type)
&& DECL_NAME (decl))
TREE_USED (decl) = 0;
else if (already_used)
TREE_USED (decl) = 1;
if (cleanup)
finish_decl_cleanup (decl, cleanup);
}
/* DECL is a VAR_DECL for a compiler-generated variable with static
storage duration (like a virtual table) whose initializer is a
compile-time constant. Initialize the variable and provide it to the
back end. */
void
initialize_artificial_var (tree decl, VEC(constructor_elt,gc) *v)
{
tree init;
gcc_assert (DECL_ARTIFICIAL (decl));
init = build_constructor (TREE_TYPE (decl), v);
gcc_assert (TREE_CODE (init) == CONSTRUCTOR);
DECL_INITIAL (decl) = init;
DECL_INITIALIZED_P (decl) = 1;
determine_visibility (decl);
layout_var_decl (decl);
maybe_commonize_var (decl);
make_rtl_for_nonlocal_decl (decl, init, /*asmspec=*/NULL);
}
/* INIT is the initializer for a variable, as represented by the
parser. Returns true iff INIT is value-dependent. */
static bool
value_dependent_init_p (tree init)
{
if (TREE_CODE (init) == TREE_LIST)
/* A parenthesized initializer, e.g.: int i (3, 2); ? */
return any_value_dependent_elements_p (init);
else if (TREE_CODE (init) == CONSTRUCTOR)
/* A brace-enclosed initializer, e.g.: int i = { 3 }; ? */
{
VEC(constructor_elt, gc) *elts;
size_t nelts;
size_t i;
elts = CONSTRUCTOR_ELTS (init);
nelts = VEC_length (constructor_elt, elts);
for (i = 0; i < nelts; ++i)
if (value_dependent_init_p (VEC_index (constructor_elt,
elts, i)->value))
return true;
}
else
/* It must be a simple expression, e.g., int i = 3; */
return value_dependent_expression_p (init);
return false;
}
/* Finish processing of a declaration;
install its line number and initial value.
If the length of an array type is not known before,
it must be determined now, from the initial value, or it is an error.
INIT is the initializer (if any) for DECL. If INIT_CONST_EXPR_P is
true, then INIT is an integral constant expression.
FLAGS is LOOKUP_ONLYCONVERTING if the = init syntax was used, else 0
if the (init) syntax was used. */
void
cp_finish_decl (tree decl, tree init, bool init_const_expr_p,
tree asmspec_tree, int flags)
{
tree type;
tree cleanup;
const char *asmspec = NULL;
int was_readonly = 0;
bool var_definition_p = false;
tree auto_node;
if (decl == error_mark_node)
return;
else if (! decl)
{
if (init)
error ("assignment (not initialization) in declaration");
return;
}
gcc_assert (TREE_CODE (decl) != RESULT_DECL);
/* Parameters are handled by store_parm_decls, not cp_finish_decl. */
gcc_assert (TREE_CODE (decl) != PARM_DECL);
type = TREE_TYPE (decl);
if (type == error_mark_node)
return;
/* Assume no cleanup is required. */
cleanup = NULL_TREE;
/* If a name was specified, get the string. */
if (global_scope_p (current_binding_level))
asmspec_tree = maybe_apply_renaming_pragma (decl, asmspec_tree);
if (asmspec_tree && asmspec_tree != error_mark_node)
asmspec = TREE_STRING_POINTER (asmspec_tree);
if (current_class_type
&& CP_DECL_CONTEXT (decl) == current_class_type
&& TYPE_BEING_DEFINED (current_class_type)
&& (DECL_INITIAL (decl) || init))
DECL_INITIALIZED_IN_CLASS_P (decl) = 1;
auto_node = type_uses_auto (type);
if (auto_node)
{
tree d_init;
if (init == NULL_TREE)
{
error ("declaration of %q#D has no initializer", decl);
TREE_TYPE (decl) = error_mark_node;
return;
}
d_init = init;
if (TREE_CODE (d_init) == TREE_LIST)
d_init = build_x_compound_expr_from_list (d_init, ELK_INIT,
tf_warning_or_error);
d_init = resolve_nondeduced_context (d_init);
if (describable_type (d_init))
{
type = TREE_TYPE (decl) = do_auto_deduction (type, d_init,
auto_node);
if (type == error_mark_node)
return;
}
}
if (TREE_CODE (decl) == FUNCTION_DECL
/* For members, defer until finalize_literal_type_property. */
&& (!DECL_CLASS_SCOPE_P (decl)
|| !TYPE_BEING_DEFINED (DECL_CONTEXT (decl))))
validate_constexpr_fundecl (decl);
else if (!ensure_literal_type_for_constexpr_object (decl))
DECL_DECLARED_CONSTEXPR_P (decl) = 0;
if (init && TREE_CODE (decl) == FUNCTION_DECL)
{
tree clone;
if (init == ridpointers[(int)RID_DELETE])
{
/* FIXME check this is 1st decl. */
DECL_DELETED_FN (decl) = 1;
DECL_DECLARED_INLINE_P (decl) = 1;
DECL_INITIAL (decl) = error_mark_node;
FOR_EACH_CLONE (clone, decl)
{
DECL_DELETED_FN (clone) = 1;
DECL_DECLARED_INLINE_P (clone) = 1;
DECL_INITIAL (clone) = error_mark_node;
}
init = NULL_TREE;
}
else if (init == ridpointers[(int)RID_DEFAULT])
{
if (defaultable_fn_check (decl))
DECL_DEFAULTED_FN (decl) = 1;
else
DECL_INITIAL (decl) = NULL_TREE;
}
}
if (init && TREE_CODE (decl) == VAR_DECL)
{
DECL_NONTRIVIALLY_INITIALIZED_P (decl) = 1;
if (init_const_expr_p)
{
/* Set these flags now for templates. We'll update the flags in
store_init_value for instantiations. */
DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (decl) = 1;
if (decl_maybe_constant_var_p (decl))
TREE_CONSTANT (decl) = 1;
}
}
if (processing_template_decl)
{
bool type_dependent_p;
/* Add this declaration to the statement-tree. */
if (at_function_scope_p ())
add_decl_expr (decl);
type_dependent_p = dependent_type_p (type);
if (check_for_bare_parameter_packs (init))
{
init = NULL_TREE;
DECL_INITIAL (decl) = NULL_TREE;
}
/* Generally, initializers in templates are expanded when the
template is instantiated. But, if DECL is a variable constant
then it can be used in future constant expressions, so its value
must be available. */
if (init
&& init_const_expr_p
&& !type_dependent_p
&& decl_maybe_constant_var_p (decl)
&& !value_dependent_init_p (init))
{
tree init_code = check_initializer (decl, init, flags, &cleanup);
if (init_code == NULL_TREE)
init = NULL_TREE;
}
else if (TREE_CODE (decl) == VAR_DECL
&& !DECL_PRETTY_FUNCTION_P (decl)
&& !type_dependent_p)
maybe_deduce_size_from_array_init (decl, init);
if (init)
DECL_INITIAL (decl) = init;
return;
}
/* Take care of TYPE_DECLs up front. */
if (TREE_CODE (decl) == TYPE_DECL)
{
if (type != error_mark_node
&& MAYBE_CLASS_TYPE_P (type) && DECL_NAME (decl))
{
if (TREE_TYPE (DECL_NAME (decl)) && TREE_TYPE (decl) != type)
warning (0, "shadowing previous type declaration of %q#D", decl);
set_identifier_type_value (DECL_NAME (decl), decl);
}
/* If we have installed this as the canonical typedef for this
type, and that type has not been defined yet, delay emitting
the debug information for it, as we will emit it later. */
if (TYPE_MAIN_DECL (TREE_TYPE (decl)) == decl
&& !COMPLETE_TYPE_P (TREE_TYPE (decl)))
TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
rest_of_decl_compilation (decl, DECL_FILE_SCOPE_P (decl),
at_eof);
return;
}
/* A reference will be modified here, as it is initialized. */
if (! DECL_EXTERNAL (decl)
&& TREE_READONLY (decl)
&& TREE_CODE (type) == REFERENCE_TYPE)
{
was_readonly = 1;
TREE_READONLY (decl) = 0;
}
if (TREE_CODE (decl) == VAR_DECL)
{
/* Only variables with trivial initialization and destruction can
have thread-local storage. */
if (DECL_THREAD_LOCAL_P (decl)
&& (type_has_nontrivial_default_init (TREE_TYPE (decl))
|| TYPE_HAS_NONTRIVIAL_DESTRUCTOR (TREE_TYPE (decl))))
error ("%qD cannot be thread-local because it has non-trivial "
"type %qT", decl, TREE_TYPE (decl));
/* If this is a local variable that will need a mangled name,
register it now. We must do this before processing the
initializer for the variable, since the initialization might
require a guard variable, and since the mangled name of the
guard variable will depend on the mangled name of this
variable. */
if (DECL_FUNCTION_SCOPE_P (decl)
&& TREE_STATIC (decl)
&& !DECL_ARTIFICIAL (decl))
{
push_local_name (decl);
if (DECL_CONSTRUCTOR_P (current_function_decl)
|| DECL_DESTRUCTOR_P (current_function_decl))
/* Normally local_decls is populated during GIMPLE lowering,
but [cd]tors are never actually compiled directly. We need
to put statics on the list so we can deal with the label
address extension. */
add_local_decl (cfun, decl);
}
/* Convert the initializer to the type of DECL, if we have not
already initialized DECL. */
if (!DECL_INITIALIZED_P (decl)
/* If !DECL_EXTERNAL then DECL is being defined. In the
case of a static data member initialized inside the
class-specifier, there can be an initializer even if DECL
is *not* defined. */
&& (!DECL_EXTERNAL (decl) || init))
{
if (TYPE_FOR_JAVA (type) && MAYBE_CLASS_TYPE_P (type))
{
tree jclass
= IDENTIFIER_GLOBAL_VALUE (get_identifier ("jclass"));
/* Allow libjava/prims.cc define primitive classes. */
if (init != NULL_TREE
|| jclass == NULL_TREE
|| TREE_CODE (jclass) != TYPE_DECL
|| !POINTER_TYPE_P (TREE_TYPE (jclass))
|| !same_type_ignoring_top_level_qualifiers_p
(type, TREE_TYPE (TREE_TYPE (jclass))))
error ("Java object %qD not allocated with %<new%>", decl);
init = NULL_TREE;
}
init = check_initializer (decl, init, flags, &cleanup);
/* Thread-local storage cannot be dynamically initialized. */
if (DECL_THREAD_LOCAL_P (decl) && init)
{
error ("%qD is thread-local and so cannot be dynamically "
"initialized", decl);
init = NULL_TREE;
}
/* Check that the initializer for a static data member was a
constant. Although we check in the parser that the
initializer is an integral constant expression, we do not
simplify division-by-zero at the point at which it
occurs. Therefore, in:
struct S { static const int i = 7 / 0; };
we issue an error at this point. It would
probably be better to forbid division by zero in
integral constant expressions. */
if (DECL_EXTERNAL (decl) && init)
{
error ("%qD cannot be initialized by a non-constant expression"
" when being declared", decl);
DECL_INITIALIZED_IN_CLASS_P (decl) = 0;
init = NULL_TREE;
}
/* Handle:
[dcl.init]
The memory occupied by any object of static storage
duration is zero-initialized at program startup before
any other initialization takes place.
We cannot create an appropriate initializer until after
the type of DECL is finalized. If DECL_INITIAL is set,
then the DECL is statically initialized, and any
necessary zero-initialization has already been performed. */
if (TREE_STATIC (decl) && !DECL_INITIAL (decl))
DECL_INITIAL (decl) = build_zero_init (TREE_TYPE (decl),
/*nelts=*/NULL_TREE,
/*static_storage_p=*/true);
/* Remember that the initialization for this variable has
taken place. */
DECL_INITIALIZED_P (decl) = 1;
/* This declaration is the definition of this variable,
unless we are initializing a static data member within
the class specifier. */
if (!DECL_EXTERNAL (decl))
var_definition_p = true;
}
/* If the variable has an array type, lay out the type, even if
there is no initializer. It is valid to index through the
array, and we must get TYPE_ALIGN set correctly on the array
type. */
else if (TREE_CODE (type) == ARRAY_TYPE)
layout_type (type);
if (TREE_STATIC (decl)
&& !at_function_scope_p ()
&& current_function_decl == NULL)
/* So decl is a global variable or a static member of a
non local class. Record the types it uses
so that we can decide later to emit debug info for them. */
record_types_used_by_current_var_decl (decl);
}
else if (TREE_CODE (decl) == FIELD_DECL
&& TYPE_FOR_JAVA (type) && MAYBE_CLASS_TYPE_P (type))
error ("non-static data member %qD has Java class type", decl);
/* Add this declaration to the statement-tree. This needs to happen
after the call to check_initializer so that the DECL_EXPR for a
reference temp is added before the DECL_EXPR for the reference itself. */
if (at_function_scope_p ())
add_decl_expr (decl);
/* Let the middle end know about variables and functions -- but not
static data members in uninstantiated class templates. */
if (TREE_CODE (decl) == VAR_DECL
|| TREE_CODE (decl) == FUNCTION_DECL)
{
if (TREE_CODE (decl) == VAR_DECL)
{
layout_var_decl (decl);
maybe_commonize_var (decl);
}
/* This needs to happen after the linkage is set. */
determine_visibility (decl);
if (var_definition_p && TREE_STATIC (decl))
{
/* If a TREE_READONLY variable needs initialization
at runtime, it is no longer readonly and we need to
avoid MEM_READONLY_P being set on RTL created for it. */
if (init)
{
if (TREE_READONLY (decl))
TREE_READONLY (decl) = 0;
was_readonly = 0;
}
else if (was_readonly)
TREE_READONLY (decl) = 1;
}
make_rtl_for_nonlocal_decl (decl, init, asmspec);
/* Check for abstractness of the type. Notice that there is no
need to strip array types here since the check for those types
is already done within create_array_type_for_decl. */
if (TREE_CODE (type) == FUNCTION_TYPE
|| TREE_CODE (type) == METHOD_TYPE)
abstract_virtuals_error (decl, TREE_TYPE (type));
else
abstract_virtuals_error (decl, type);
if (TREE_TYPE (decl) == error_mark_node)
/* No initialization required. */
;
else if (TREE_CODE (decl) == FUNCTION_DECL)
{
if (init)
{
if (init == ridpointers[(int)RID_DEFAULT])
{
/* An out-of-class default definition is defined at
the point where it is explicitly defaulted. */
if (DECL_DELETED_FN (decl))
maybe_explain_implicit_delete (decl);
else if (DECL_INITIAL (decl) == error_mark_node)
synthesize_method (decl);
}
else
error ("function %q#D is initialized like a variable", decl);
}
/* else no initialization required. */
}
else if (DECL_EXTERNAL (decl)
&& ! (DECL_LANG_SPECIFIC (decl)
&& DECL_NOT_REALLY_EXTERN (decl)))
{
if (init)
DECL_INITIAL (decl) = init;
}
/* A variable definition. */
else if (DECL_FUNCTION_SCOPE_P (decl) && !TREE_STATIC (decl))
/* Initialize the local variable. */
initialize_local_var (decl, init);
/* If a variable is defined, and then a subsequent
definition with external linkage is encountered, we will
get here twice for the same variable. We want to avoid
calling expand_static_init more than once. For variables
that are not static data members, we can call
expand_static_init only when we actually process the
initializer. It is not legal to redeclare a static data
member, so this issue does not arise in that case. */
else if (var_definition_p && TREE_STATIC (decl))
expand_static_init (decl, init);
}
/* If a CLEANUP_STMT was created to destroy a temporary bound to a
reference, insert it in the statement-tree now. */
if (cleanup)
push_cleanup (decl, cleanup, false);
if (was_readonly)
TREE_READONLY (decl) = 1;
}
/* Returns a declaration for a VAR_DECL as if:
extern "C" TYPE NAME;
had been seen. Used to create compiler-generated global
variables. */
static tree
declare_global_var (tree name, tree type)
{
tree decl;
push_to_top_level ();
decl = build_decl (input_location, VAR_DECL, name, type);
TREE_PUBLIC (decl) = 1;
DECL_EXTERNAL (decl) = 1;
DECL_ARTIFICIAL (decl) = 1;
/* If the user has explicitly declared this variable (perhaps
because the code we are compiling is part of a low-level runtime
library), then it is possible that our declaration will be merged
with theirs by pushdecl. */
decl = pushdecl (decl);
cp_finish_decl (decl, NULL_TREE, false, NULL_TREE, 0);
pop_from_top_level ();
return decl;
}
/* Returns the type for the argument to "__cxa_atexit" (or "atexit",
if "__cxa_atexit" is not being used) corresponding to the function
to be called when the program exits. */
static tree
get_atexit_fn_ptr_type (void)
{
tree fn_type;
if (!atexit_fn_ptr_type_node)
{
tree arg_type;
if (flag_use_cxa_atexit
&& !targetm.cxx.use_atexit_for_cxa_atexit ())
/* The parameter to "__cxa_atexit" is "void (*)(void *)". */
arg_type = ptr_type_node;
else
/* The parameter to "atexit" is "void (*)(void)". */
arg_type = NULL_TREE;
fn_type = build_function_type_list (void_type_node,
arg_type, NULL_TREE);
atexit_fn_ptr_type_node = build_pointer_type (fn_type);
}
return atexit_fn_ptr_type_node;
}
/* Returns a pointer to the `atexit' function. Note that if
FLAG_USE_CXA_ATEXIT is nonzero, then this will actually be the new
`__cxa_atexit' function specified in the IA64 C++ ABI. */
static tree
get_atexit_node (void)
{
tree atexit_fndecl;
tree fn_type;
tree fn_ptr_type;
const char *name;
bool use_aeabi_atexit;
if (atexit_node)
return atexit_node;
if (flag_use_cxa_atexit && !targetm.cxx.use_atexit_for_cxa_atexit ())
{
/* The declaration for `__cxa_atexit' is:
int __cxa_atexit (void (*)(void *), void *, void *)
We build up the argument types and then the function type
itself. */
tree argtype0, argtype1, argtype2;
use_aeabi_atexit = targetm.cxx.use_aeabi_atexit ();
/* First, build the pointer-to-function type for the first
argument. */
fn_ptr_type = get_atexit_fn_ptr_type ();
/* Then, build the rest of the argument types. */
argtype2 = ptr_type_node;
if (use_aeabi_atexit)
{
argtype1 = fn_ptr_type;
argtype0 = ptr_type_node;
}
else
{
argtype1 = ptr_type_node;
argtype0 = fn_ptr_type;
}
/* And the final __cxa_atexit type. */
fn_type = build_function_type_list (integer_type_node,
argtype0, argtype1, argtype2,
NULL_TREE);
fn_ptr_type = build_pointer_type (fn_type);
if (use_aeabi_atexit)
name = "__aeabi_atexit";
else
name = "__cxa_atexit";
}
else
{
/* The declaration for `atexit' is:
int atexit (void (*)());
We build up the argument types and then the function type
itself. */
fn_ptr_type = get_atexit_fn_ptr_type ();
/* Build the final atexit type. */
fn_type = build_function_type_list (integer_type_node,
fn_ptr_type, NULL_TREE);
name = "atexit";
}
/* Now, build the function declaration. */
push_lang_context (lang_name_c);
atexit_fndecl = build_library_fn_ptr (name, fn_type);
mark_used (atexit_fndecl);
pop_lang_context ();
atexit_node = decay_conversion (atexit_fndecl);
return atexit_node;
}
/* Returns the __dso_handle VAR_DECL. */
static tree
get_dso_handle_node (void)
{
if (dso_handle_node)
return dso_handle_node;
/* Declare the variable. */
dso_handle_node = declare_global_var (get_identifier ("__dso_handle"),
ptr_type_node);
return dso_handle_node;
}
/* Begin a new function with internal linkage whose job will be simply
to destroy some particular variable. */
static GTY(()) int start_cleanup_cnt;
static tree
start_cleanup_fn (void)
{
char name[32];
tree fntype;
tree fndecl;
bool use_cxa_atexit = flag_use_cxa_atexit
&& !targetm.cxx.use_atexit_for_cxa_atexit ();
push_to_top_level ();
/* No need to mangle this. */
push_lang_context (lang_name_c);
/* Build the name of the function. */
sprintf (name, "__tcf_%d", start_cleanup_cnt++);
/* Build the function declaration. */
fntype = TREE_TYPE (get_atexit_fn_ptr_type ());
fndecl = build_lang_decl (FUNCTION_DECL, get_identifier (name), fntype);
/* It's a function with internal linkage, generated by the
compiler. */
TREE_PUBLIC (fndecl) = 0;
DECL_ARTIFICIAL (fndecl) = 1;
/* Make the function `inline' so that it is only emitted if it is
actually needed. It is unlikely that it will be inlined, since
it is only called via a function pointer, but we avoid unnecessary
emissions this way. */
DECL_DECLARED_INLINE_P (fndecl) = 1;
DECL_INTERFACE_KNOWN (fndecl) = 1;
/* Build the parameter. */
if (use_cxa_atexit)
{
tree parmdecl;
parmdecl = cp_build_parm_decl (NULL_TREE, ptr_type_node);
DECL_CONTEXT (parmdecl) = fndecl;
TREE_USED (parmdecl) = 1;
DECL_READ_P (parmdecl) = 1;
DECL_ARGUMENTS (fndecl) = parmdecl;
}
pushdecl (fndecl);
start_preparsed_function (fndecl, NULL_TREE, SF_PRE_PARSED);
pop_lang_context ();
return current_function_decl;
}
/* Finish the cleanup function begun by start_cleanup_fn. */
static void
end_cleanup_fn (void)
{
expand_or_defer_fn (finish_function (0));
pop_from_top_level ();
}
/* Generate code to handle the destruction of DECL, an object with
static storage duration. */
tree
register_dtor_fn (tree decl)
{
tree cleanup;
tree compound_stmt;
tree fcall;
tree type;
bool use_dtor;
tree arg0, arg1 = NULL_TREE, arg2 = NULL_TREE;
type = TREE_TYPE (decl);
if (TYPE_HAS_TRIVIAL_DESTRUCTOR (type))
return void_zero_node;
/* If we're using "__cxa_atexit" (or "__aeabi_atexit"), and DECL is
a class object, we can just pass the destructor to
"__cxa_atexit"; we don't have to build a temporary function to do
the cleanup. */
use_dtor = (flag_use_cxa_atexit
&& !targetm.cxx.use_atexit_for_cxa_atexit ()
&& CLASS_TYPE_P (type));
if (use_dtor)
{
int idx;
/* Find the destructor. */
idx = lookup_fnfields_1 (type, complete_dtor_identifier);
gcc_assert (idx >= 0);
cleanup = VEC_index (tree, CLASSTYPE_METHOD_VEC (type), idx);
/* Make sure it is accessible. */
perform_or_defer_access_check (TYPE_BINFO (type), cleanup, cleanup);
}
else
{
/* Call build_cleanup before we enter the anonymous function so
that any access checks will be done relative to the current
scope, rather than the scope of the anonymous function. */
build_cleanup (decl);
/* Now start the function. */
cleanup = start_cleanup_fn ();
/* Now, recompute the cleanup. It may contain SAVE_EXPRs that refer
to the original function, rather than the anonymous one. That
will make the back end think that nested functions are in use,
which causes confusion. */
push_deferring_access_checks (dk_no_check);
fcall = build_cleanup (decl);
pop_deferring_access_checks ();
/* Create the body of the anonymous function. */
compound_stmt = begin_compound_stmt (BCS_FN_BODY);
finish_expr_stmt (fcall);
finish_compound_stmt (compound_stmt);
end_cleanup_fn ();
}
/* Call atexit with the cleanup function. */
mark_used (cleanup);
cleanup = build_address (cleanup);
if (flag_use_cxa_atexit && !targetm.cxx.use_atexit_for_cxa_atexit ())
{
tree addr;
if (use_dtor)
{
/* We must convert CLEANUP to the type that "__cxa_atexit"
expects. */
cleanup = build_nop (get_atexit_fn_ptr_type (), cleanup);
/* "__cxa_atexit" will pass the address of DECL to the
cleanup function. */
mark_used (decl);
addr = build_address (decl);
/* The declared type of the parameter to "__cxa_atexit" is
"void *". For plain "T*", we could just let the
machinery in cp_build_function_call convert it -- but if the
type is "cv-qualified T *", then we need to convert it
before passing it in, to avoid spurious errors. */
addr = build_nop (ptr_type_node, addr);
}
else
/* Since the cleanup functions we build ignore the address
they're given, there's no reason to pass the actual address
in, and, in general, it's cheaper to pass NULL than any
other value. */
addr = null_pointer_node;
arg2 = cp_build_addr_expr (get_dso_handle_node (),
tf_warning_or_error);
if (targetm.cxx.use_aeabi_atexit ())
{
arg1 = cleanup;
arg0 = addr;
}
else
{
arg1 = addr;
arg0 = cleanup;
}
}
else
arg0 = cleanup;
return cp_build_function_call_nary (get_atexit_node (), tf_warning_or_error,
arg0, arg1, arg2, NULL_TREE);
}
/* DECL is a VAR_DECL with static storage duration. INIT, if present,
is its initializer. Generate code to handle the construction
and destruction of DECL. */
static void
expand_static_init (tree decl, tree init)
{
gcc_assert (TREE_CODE (decl) == VAR_DECL);
gcc_assert (TREE_STATIC (decl));
/* Some variables require no dynamic initialization. */
if (!init
&& TYPE_HAS_TRIVIAL_DESTRUCTOR (TREE_TYPE (decl)))
return;
if (DECL_FUNCTION_SCOPE_P (decl))
{
/* Emit code to perform this initialization but once. */
tree if_stmt = NULL_TREE, inner_if_stmt = NULL_TREE;
tree then_clause = NULL_TREE, inner_then_clause = NULL_TREE;
tree guard, guard_addr;
tree acquire_fn, release_fn, abort_fn;
tree flag, begin;
/* Emit code to perform this initialization but once. This code
looks like:
static <type> guard;
if (!guard.first_byte) {
if (__cxa_guard_acquire (&guard)) {
bool flag = false;
try {
// Do initialization.
flag = true; __cxa_guard_release (&guard);
// Register variable for destruction at end of program.
} catch {
if (!flag) __cxa_guard_abort (&guard);
}
}
Note that the `flag' variable is only set to 1 *after* the
initialization is complete. This ensures that an exception,
thrown during the construction, will cause the variable to
reinitialized when we pass through this code again, as per:
[stmt.dcl]
If the initialization exits by throwing an exception, the
initialization is not complete, so it will be tried again
the next time control enters the declaration.
This process should be thread-safe, too; multiple threads
should not be able to initialize the variable more than
once. */
/* Create the guard variable. */
guard = get_guard (decl);
/* This optimization isn't safe on targets with relaxed memory
consistency. On such targets we force synchronization in
__cxa_guard_acquire. */
if (!targetm.relaxed_ordering || !flag_threadsafe_statics)
{
/* Begin the conditional initialization. */
if_stmt = begin_if_stmt ();
finish_if_stmt_cond (get_guard_cond (guard), if_stmt);
then_clause = begin_compound_stmt (BCS_NO_SCOPE);
}
if (flag_threadsafe_statics)
{
guard_addr = build_address (guard);
acquire_fn = get_identifier ("__cxa_guard_acquire");
release_fn = get_identifier ("__cxa_guard_release");
abort_fn = get_identifier ("__cxa_guard_abort");
if (!get_global_value_if_present (acquire_fn, &acquire_fn))
{
tree vfntype = build_function_type_list (void_type_node,
TREE_TYPE (guard_addr),
NULL_TREE);
acquire_fn = push_library_fn
(acquire_fn, build_function_type_list (integer_type_node,
TREE_TYPE (guard_addr),
NULL_TREE),
NULL_TREE);
release_fn = push_library_fn (release_fn, vfntype, NULL_TREE);
abort_fn = push_library_fn (abort_fn, vfntype, NULL_TREE);
}
else
{
release_fn = identifier_global_value (release_fn);
abort_fn = identifier_global_value (abort_fn);
}
inner_if_stmt = begin_if_stmt ();
finish_if_stmt_cond (build_call_n (acquire_fn, 1, guard_addr),
inner_if_stmt);
inner_then_clause = begin_compound_stmt (BCS_NO_SCOPE);
begin = get_target_expr (boolean_false_node);
flag = TARGET_EXPR_SLOT (begin);
TARGET_EXPR_CLEANUP (begin)
= build3 (COND_EXPR, void_type_node, flag,
void_zero_node,
build_call_n (abort_fn, 1, guard_addr));
CLEANUP_EH_ONLY (begin) = 1;
/* Do the initialization itself. */
init = add_stmt_to_compound (begin, init);
init = add_stmt_to_compound
(init, build2 (MODIFY_EXPR, void_type_node, flag, boolean_true_node));
init = add_stmt_to_compound
(init, build_call_n (release_fn, 1, guard_addr));
}
else
init = add_stmt_to_compound (init, set_guard (guard));
/* Use atexit to register a function for destroying this static
variable. */
init = add_stmt_to_compound (init, register_dtor_fn (decl));
finish_expr_stmt (init);
if (flag_threadsafe_statics)
{
finish_compound_stmt (inner_then_clause);
finish_then_clause (inner_if_stmt);
finish_if_stmt (inner_if_stmt);
}
if (!targetm.relaxed_ordering || !flag_threadsafe_statics)
{
finish_compound_stmt (then_clause);
finish_then_clause (if_stmt);
finish_if_stmt (if_stmt);
}
}
else
static_aggregates = tree_cons (init, decl, static_aggregates);
}
/* Make TYPE a complete type based on INITIAL_VALUE.
Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
2 if there was no information (in which case assume 0 if DO_DEFAULT),
3 if the initializer list is empty (in pedantic mode). */
int
cp_complete_array_type (tree *ptype, tree initial_value, bool do_default)
{
int failure;
tree type, elt_type;
if (initial_value)
{
unsigned HOST_WIDE_INT i;
tree value;
/* An array of character type can be initialized from a
brace-enclosed string constant.
FIXME: this code is duplicated from reshape_init. Probably
we should just call reshape_init here? */
if (char_type_p (TYPE_MAIN_VARIANT (TREE_TYPE (*ptype)))
&& TREE_CODE (initial_value) == CONSTRUCTOR
&& !VEC_empty (constructor_elt, CONSTRUCTOR_ELTS (initial_value)))
{
VEC(constructor_elt,gc) *v = CONSTRUCTOR_ELTS (initial_value);
tree value = VEC_index (constructor_elt, v, 0)->value;
if (TREE_CODE (value) == STRING_CST
&& VEC_length (constructor_elt, v) == 1)
initial_value = value;
}
/* If any of the elements are parameter packs, we can't actually
complete this type now because the array size is dependent. */
if (TREE_CODE (initial_value) == CONSTRUCTOR)
{
FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (initial_value),
i, value)
{
if (PACK_EXPANSION_P (value))
return 0;
}
}
}
failure = complete_array_type (ptype, initial_value, do_default);
/* We can create the array before the element type is complete, which
means that we didn't have these two bits set in the original type
either. In completing the type, we are expected to propagate these
bits. See also complete_type which does the same thing for arrays
of fixed size. */
type = *ptype;
if (TYPE_DOMAIN (type))
{
elt_type = TREE_TYPE (type);
TYPE_NEEDS_CONSTRUCTING (type) = TYPE_NEEDS_CONSTRUCTING (elt_type);
TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)
= TYPE_HAS_NONTRIVIAL_DESTRUCTOR (elt_type);
}
return failure;
}
/* As above, but either give an error or reject zero-size arrays, depending
on COMPLAIN. */
int
cp_complete_array_type_or_error (tree *ptype, tree initial_value,
bool do_default, tsubst_flags_t complain)
{
int failure;
bool sfinae = !(complain & tf_error);
/* In SFINAE context we can't be lenient about zero-size arrays. */
if (sfinae)
++pedantic;
failure = cp_complete_array_type (ptype, initial_value, do_default);
if (sfinae)
--pedantic;
if (failure)
{
if (sfinae)
/* Not an error. */;
else if (failure == 1)
error ("initializer fails to determine size of %qT", *ptype);
else if (failure == 2)
{
if (do_default)
error ("array size missing in %qT", *ptype);
}
else if (failure == 3)
error ("zero-size array %qT", *ptype);
*ptype = error_mark_node;
}
return failure;
}
/* Return zero if something is declared to be a member of type
CTYPE when in the context of CUR_TYPE. STRING is the error
message to print in that case. Otherwise, quietly return 1. */
static int
member_function_or_else (tree ctype, tree cur_type, enum overload_flags flags)
{
if (ctype && ctype != cur_type)
{
if (flags == DTOR_FLAG)
error ("destructor for alien class %qT cannot be a member", ctype);
else
error ("constructor for alien class %qT cannot be a member", ctype);
return 0;
}
return 1;
}
/* Subroutine of `grokdeclarator'. */
/* Generate errors possibly applicable for a given set of specifiers.
This is for ARM $7.1.2. */
static void
bad_specifiers (tree object,
enum bad_spec_place type,
int virtualp,
int quals,
int inlinep,
int friendp,
int raises)
{
switch (type)
{
case BSP_VAR:
if (virtualp)
error ("%qD declared as a %<virtual%> variable", object);
if (inlinep)
error ("%qD declared as an %<inline%> variable", object);
if (quals)
error ("%<const%> and %<volatile%> function specifiers on "
"%qD invalid in variable declaration", object);
break;
case BSP_PARM:
if (virtualp)
error ("%qD declared as a %<virtual%> parameter", object);
if (inlinep)
error ("%qD declared as an %<inline%> parameter", object);
if (quals)
error ("%<const%> and %<volatile%> function specifiers on "
"%qD invalid in parameter declaration", object);
break;
case BSP_TYPE:
if (virtualp)
error ("%qD declared as a %<virtual%> type", object);
if (inlinep)
error ("%qD declared as an %<inline%> type", object);
if (quals)
error ("%<const%> and %<volatile%> function specifiers on "
"%qD invalid in type declaration", object);
break;
case BSP_FIELD:
if (virtualp)
error ("%qD declared as a %<virtual%> field", object);
if (inlinep)
error ("%qD declared as an %<inline%> field", object);
if (quals)
error ("%<const%> and %<volatile%> function specifiers on "
"%qD invalid in field declaration", object);
break;
default:
gcc_unreachable();
}
if (friendp)
error ("%q+D declared as a friend", object);
if (raises
&& (TREE_CODE (object) == TYPE_DECL
|| (!TYPE_PTRFN_P (TREE_TYPE (object))
&& !TYPE_REFFN_P (TREE_TYPE (object))
&& !TYPE_PTRMEMFUNC_P (TREE_TYPE (object)))))
error ("%q+D declared with an exception specification", object);
}
/* DECL is a member function or static data member and is presently
being defined. Check that the definition is taking place in a
valid namespace. */
static void
check_class_member_definition_namespace (tree decl)
{
/* These checks only apply to member functions and static data
members. */
gcc_assert (TREE_CODE (decl) == FUNCTION_DECL
|| TREE_CODE (decl) == VAR_DECL);
/* We check for problems with specializations in pt.c in
check_specialization_namespace, where we can issue better
diagnostics. */
if (processing_specialization)
return;
/* There are no restrictions on the placement of
explicit instantiations. */
if (processing_explicit_instantiation)
return;
/* [class.mfct]
A member function definition that appears outside of the
class definition shall appear in a namespace scope enclosing
the class definition.
[class.static.data]
The definition for a static data member shall appear in a
namespace scope enclosing the member's class definition. */
if (!is_ancestor (current_namespace, DECL_CONTEXT (decl)))
permerror (input_location, "definition of %qD is not in namespace enclosing %qT",
decl, DECL_CONTEXT (decl));
}
/* Build a PARM_DECL for the "this" parameter. TYPE is the
METHOD_TYPE for a non-static member function; QUALS are the
cv-qualifiers that apply to the function. */
tree
build_this_parm (tree type, cp_cv_quals quals)
{
tree this_type;
tree qual_type;
tree parm;
cp_cv_quals this_quals;
this_type = TREE_VALUE (TYPE_ARG_TYPES (type));
/* The `this' parameter is implicitly `const'; it cannot be
assigned to. */
this_quals = (quals & TYPE_QUAL_RESTRICT) | TYPE_QUAL_CONST;
qual_type = cp_build_qualified_type (this_type, this_quals);
parm = build_artificial_parm (this_identifier, qual_type);
cp_apply_type_quals_to_decl (this_quals, parm);
return parm;
}
/* CTYPE is class type, or null if non-class.
TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
or METHOD_TYPE.
DECLARATOR is the function's name.
PARMS is a chain of PARM_DECLs for the function.
VIRTUALP is truthvalue of whether the function is virtual or not.
FLAGS are to be passed through to `grokclassfn'.
QUALS are qualifiers indicating whether the function is `const'
or `volatile'.
RAISES is a list of exceptions that this function can raise.
CHECK is 1 if we must find this method in CTYPE, 0 if we should
not look, and -1 if we should not call `grokclassfn' at all.
SFK is the kind of special function (if any) for the new function.
Returns `NULL_TREE' if something goes wrong, after issuing
applicable error messages. */
static tree
grokfndecl (tree ctype,
tree type,
tree declarator,
tree parms,
tree orig_declarator,
int virtualp,
enum overload_flags flags,
cp_cv_quals quals,
tree raises,
int check,
int friendp,
int publicp,
int inlinep,
special_function_kind sfk,
bool funcdef_flag,
int template_count,
tree in_namespace,
tree* attrlist,
location_t location)
{
tree decl;
int staticp = ctype && TREE_CODE (type) == FUNCTION_TYPE;
tree t;
if (raises)
type = build_exception_variant (type, raises);
decl = build_lang_decl (FUNCTION_DECL, declarator, type);
/* If we have an explicit location, use it, otherwise use whatever
build_lang_decl used (probably input_location). */
if (location != UNKNOWN_LOCATION)
DECL_SOURCE_LOCATION (decl) = location;
if (TREE_CODE (type) == METHOD_TYPE)
{
tree parm;
parm = build_this_parm (type, quals);
DECL_CHAIN (parm) = parms;
parms = parm;
}
DECL_ARGUMENTS (decl) = parms;
for (t = parms; t; t = DECL_CHAIN (t))
DECL_CONTEXT (t) = decl;
/* Propagate volatile out from type to decl. */
if (TYPE_VOLATILE (type))
TREE_THIS_VOLATILE (decl) = 1;
/* Setup decl according to sfk. */
switch (sfk)
{
case sfk_constructor:
case sfk_copy_constructor:
case sfk_move_constructor:
DECL_CONSTRUCTOR_P (decl) = 1;
break;
case sfk_destructor:
DECL_DESTRUCTOR_P (decl) = 1;
break;
default:
break;
}
/* If pointers to member functions use the least significant bit to
indicate whether a function is virtual, ensure a pointer
to this function will have that bit clear. */
if (TARGET_PTRMEMFUNC_VBIT_LOCATION == ptrmemfunc_vbit_in_pfn
&& TREE_CODE (type) == METHOD_TYPE
&& DECL_ALIGN (decl) < 2 * BITS_PER_UNIT)
DECL_ALIGN (decl) = 2 * BITS_PER_UNIT;
if (friendp
&& TREE_CODE (orig_declarator) == TEMPLATE_ID_EXPR)
{
if (funcdef_flag)
error
("defining explicit specialization %qD in friend declaration",
orig_declarator);
else
{
tree fns = TREE_OPERAND (orig_declarator, 0);
tree args = TREE_OPERAND (orig_declarator, 1);
if (PROCESSING_REAL_TEMPLATE_DECL_P ())
{
/* Something like `template <class T> friend void f<T>()'. */
error ("invalid use of template-id %qD in declaration "
"of primary template",
orig_declarator);
return NULL_TREE;
}
/* A friend declaration of the form friend void f<>(). Record
the information in the TEMPLATE_ID_EXPR. */
SET_DECL_IMPLICIT_INSTANTIATION (decl);
if (TREE_CODE (fns) == COMPONENT_REF)
{
/* Due to bison parser ickiness, we will have already looked
up an operator_name or PFUNCNAME within the current class
(see template_id in parse.y). If the current class contains
such a name, we'll get a COMPONENT_REF here. Undo that. */
gcc_assert (TREE_TYPE (TREE_OPERAND (fns, 0))
== current_class_type);
fns = TREE_OPERAND (fns, 1);
}
gcc_assert (TREE_CODE (fns) == IDENTIFIER_NODE
|| TREE_CODE (fns) == OVERLOAD);
DECL_TEMPLATE_INFO (decl) = build_template_info (fns, args);
for (t = TYPE_ARG_TYPES (TREE_TYPE (decl)); t; t = TREE_CHAIN (t))
if (TREE_PURPOSE (t)
&& TREE_CODE (TREE_PURPOSE (t)) == DEFAULT_ARG)
{
error ("default arguments are not allowed in declaration "
"of friend template specialization %qD",
decl);
return NULL_TREE;
}
if (inlinep)
{
error ("%<inline%> is not allowed in declaration of friend "
"template specialization %qD",
decl);
return NULL_TREE;
}
}
}
/* If this decl has namespace scope, set that up. */
if (in_namespace)
set_decl_namespace (decl, in_namespace, friendp);
else if (!ctype)
DECL_CONTEXT (decl) = FROB_CONTEXT (current_decl_namespace ());
/* `main' and builtins have implicit 'C' linkage. */
if ((MAIN_NAME_P (declarator)
|| (IDENTIFIER_LENGTH (declarator) > 10
&& IDENTIFIER_POINTER (declarator)[0] == '_'
&& IDENTIFIER_POINTER (declarator)[1] == '_'
&& strncmp (IDENTIFIER_POINTER (declarator)+2, "builtin_", 8) == 0))
&& current_lang_name == lang_name_cplusplus
&& ctype == NULL_TREE
&& DECL_FILE_SCOPE_P (decl))
SET_DECL_LANGUAGE (decl, lang_c);
/* Should probably propagate const out from type to decl I bet (mrs). */
if (staticp)
{
DECL_STATIC_FUNCTION_P (decl) = 1;
DECL_CONTEXT (decl) = ctype;
}
if (ctype)
{
DECL_CONTEXT (decl) = ctype;
if (funcdef_flag)
check_class_member_definition_namespace (decl);
}
if (ctype == NULL_TREE && DECL_MAIN_P (decl))
{
if (processing_template_decl)
error ("cannot declare %<::main%> to be a template");
if (inlinep)
error ("cannot declare %<::main%> to be inline");
if (!publicp)
error ("cannot declare %<::main%> to be static");
inlinep = 0;
publicp = 1;
}
/* Members of anonymous types and local classes have no linkage; make
them internal. If a typedef is made later, this will be changed. */
if (ctype && (TYPE_ANONYMOUS_P (ctype)
|| decl_function_context (TYPE_MAIN_DECL (ctype))))
publicp = 0;
if (publicp && cxx_dialect == cxx98)
{
/* [basic.link]: A name with no linkage (notably, the name of a class
or enumeration declared in a local scope) shall not be used to
declare an entity with linkage.
DR 757 relaxes this restriction for C++0x. */
t = no_linkage_check (TREE_TYPE (decl),
/*relaxed_p=*/false);
if (t)
{
if (TYPE_ANONYMOUS_P (t))
{
if (DECL_EXTERN_C_P (decl))
/* Allow this; it's pretty common in C. */;
else
{
permerror (input_location, "anonymous type with no linkage "
"used to declare function %q#D with linkage",
decl);
if (DECL_ORIGINAL_TYPE (TYPE_NAME (t)))
permerror (input_location, "%q+#D does not refer to the unqualified "
"type, so it is not used for linkage",
TYPE_NAME (t));
}
}
else
permerror (input_location, "type %qT with no linkage used to "
"declare function %q#D with linkage", t, decl);
}
}
TREE_PUBLIC (decl) = publicp;
if (! publicp)
{
DECL_INTERFACE_KNOWN (decl) = 1;
DECL_NOT_REALLY_EXTERN (decl) = 1;
}
/* If the declaration was declared inline, mark it as such. */
if (inlinep)
DECL_DECLARED_INLINE_P (decl) = 1;
if (inlinep & 2)
DECL_DECLARED_CONSTEXPR_P (decl) = true;
DECL_EXTERNAL (decl) = 1;
if (quals && TREE_CODE (type) == FUNCTION_TYPE)
{
error (ctype
? G_("static member function %qD cannot have cv-qualifier")
: G_("non-member function %qD cannot have cv-qualifier"),
decl);
quals = TYPE_UNQUALIFIED;
}
if (IDENTIFIER_OPNAME_P (DECL_NAME (decl))
&& !grok_op_properties (decl, /*complain=*/true))
return NULL_TREE;
if (funcdef_flag)
/* Make the init_value nonzero so pushdecl knows this is not
tentative. error_mark_node is replaced later with the BLOCK. */
DECL_INITIAL (decl) = error_mark_node;
if (TYPE_NOTHROW_P (type) || nothrow_libfn_p (decl))
TREE_NOTHROW (decl) = 1;
/* Caller will do the rest of this. */
if (check < 0)
return decl;
if (ctype != NULL_TREE)
grokclassfn (ctype, decl, flags);
decl = check_explicit_specialization (orig_declarator, decl,
template_count,
2 * funcdef_flag +
4 * (friendp != 0));
if (decl == error_mark_node)
return NULL_TREE;
if (attrlist)
{
cplus_decl_attributes (&decl, *attrlist, 0);
*attrlist = NULL_TREE;
}
/* Check main's type after attributes have been applied. */
if (ctype == NULL_TREE && DECL_MAIN_P (decl))
{
if (!same_type_p (TREE_TYPE (TREE_TYPE (decl)),
integer_type_node))
{
tree oldtypeargs = TYPE_ARG_TYPES (TREE_TYPE (decl));
tree newtype;
error ("%<::main%> must return %<int%>");
newtype = build_function_type (integer_type_node, oldtypeargs);
TREE_TYPE (decl) = newtype;
}
if (warn_main)
check_main_parameter_types (decl);
}
if (ctype != NULL_TREE
&& (! TYPE_FOR_JAVA (ctype) || check_java_method (decl))
&& check)
{
tree old_decl = check_classfn (ctype, decl,
(processing_template_decl
> template_class_depth (ctype))
? current_template_parms
: NULL_TREE);
if (old_decl == error_mark_node)
return NULL_TREE;
if (old_decl)
{
tree ok;
tree pushed_scope;
if (TREE_CODE (old_decl) == TEMPLATE_DECL)
/* Because grokfndecl is always supposed to return a
FUNCTION_DECL, we pull out the DECL_TEMPLATE_RESULT
here. We depend on our callers to figure out that its
really a template that's being returned. */
old_decl = DECL_TEMPLATE_RESULT (old_decl);
if (DECL_STATIC_FUNCTION_P (old_decl)
&& TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE)
/* Remove the `this' parm added by grokclassfn.
XXX Isn't this done in start_function, too? */
revert_static_member_fn (decl);
if (DECL_ARTIFICIAL (old_decl))
{
error ("definition of implicitly-declared %qD", old_decl);
return NULL_TREE;
}
/* Since we've smashed OLD_DECL to its
DECL_TEMPLATE_RESULT, we must do the same to DECL. */
if (TREE_CODE (decl) == TEMPLATE_DECL)
decl = DECL_TEMPLATE_RESULT (decl);
/* Attempt to merge the declarations. This can fail, in
the case of some invalid specialization declarations. */
pushed_scope = push_scope (ctype);
ok = duplicate_decls (decl, old_decl, friendp);
if (pushed_scope)
pop_scope (pushed_scope);
if (!ok)
{
error ("no %q#D member function declared in class %qT",
decl, ctype);
return NULL_TREE;
}
return old_decl;
}
}
if (DECL_CONSTRUCTOR_P (decl) && !grok_ctor_properties (ctype, decl))
return NULL_TREE;
if (ctype == NULL_TREE || check)
return decl;
if (virtualp)
DECL_VIRTUAL_P (decl) = 1;
return decl;
}
/* DECL is a VAR_DECL for a static data member. Set flags to reflect
the linkage that DECL will receive in the object file. */
static void
set_linkage_for_static_data_member (tree decl)
{
/* A static data member always has static storage duration and
external linkage. Note that static data members are forbidden in
local classes -- the only situation in which a class has
non-external linkage. */
TREE_PUBLIC (decl) = 1;
TREE_STATIC (decl) = 1;
/* For non-template classes, static data members are always put
out in exactly those files where they are defined, just as
with ordinary namespace-scope variables. */
if (!processing_template_decl)
DECL_INTERFACE_KNOWN (decl) = 1;
}
/* Create a VAR_DECL named NAME with the indicated TYPE.
If SCOPE is non-NULL, it is the class type or namespace containing
the variable. If SCOPE is NULL, the variable should is created in
the innermost enclosings scope. */
static tree
grokvardecl (tree type,
tree name,
const cp_decl_specifier_seq *declspecs,
int initialized,
int constp,
tree scope)
{
tree decl;
tree explicit_scope;
gcc_assert (!name || TREE_CODE (name) == IDENTIFIER_NODE);
/* Compute the scope in which to place the variable, but remember
whether or not that scope was explicitly specified by the user. */
explicit_scope = scope;
if (!scope)
{
/* An explicit "extern" specifier indicates a namespace-scope
variable. */
if (declspecs->storage_class == sc_extern)
scope = current_decl_namespace ();
else if (!at_function_scope_p ())
scope = current_scope ();
}
if (scope
&& (/* If the variable is a namespace-scope variable declared in a
template, we need DECL_LANG_SPECIFIC. */
(TREE_CODE (scope) == NAMESPACE_DECL && processing_template_decl)
/* Similarly for namespace-scope variables with language linkage
other than C++. */
|| (TREE_CODE (scope) == NAMESPACE_DECL
&& current_lang_name != lang_name_cplusplus)
/* Similarly for static data members. */
|| TYPE_P (scope)))
decl = build_lang_decl (VAR_DECL, name, type);
else
decl = build_decl (input_location, VAR_DECL, name, type);
if (explicit_scope && TREE_CODE (explicit_scope) == NAMESPACE_DECL)
set_decl_namespace (decl, explicit_scope, 0);
else
DECL_CONTEXT (decl) = FROB_CONTEXT (scope);
if (declspecs->storage_class == sc_extern)
{
DECL_THIS_EXTERN (decl) = 1;
DECL_EXTERNAL (decl) = !initialized;
}
if (DECL_CLASS_SCOPE_P (decl))
{
set_linkage_for_static_data_member (decl);
/* This function is only called with out-of-class definitions. */
DECL_EXTERNAL (decl) = 0;
check_class_member_definition_namespace (decl);
}
/* At top level, either `static' or no s.c. makes a definition
(perhaps tentative), and absence of `static' makes it public. */
else if (toplevel_bindings_p ())
{
TREE_PUBLIC (decl) = (declspecs->storage_class != sc_static
&& (DECL_THIS_EXTERN (decl) || ! constp));
TREE_STATIC (decl) = ! DECL_EXTERNAL (decl);
}
/* Not at top level, only `static' makes a static definition. */
else
{
TREE_STATIC (decl) = declspecs->storage_class == sc_static;
TREE_PUBLIC (decl) = DECL_EXTERNAL (decl);
}
if (declspecs->specs[(int)ds_thread])
DECL_TLS_MODEL (decl) = decl_default_tls_model (decl);
/* If the type of the decl has no linkage, make sure that we'll
notice that in mark_used. */
if (cxx_dialect > cxx98
&& decl_linkage (decl) != lk_none
&& DECL_LANG_SPECIFIC (decl) == NULL
&& !DECL_EXTERN_C_P (decl)
&& no_linkage_check (TREE_TYPE (decl), /*relaxed_p=*/false))
retrofit_lang_decl (decl);
if (TREE_PUBLIC (decl))
{
/* [basic.link]: A name with no linkage (notably, the name of a class
or enumeration declared in a local scope) shall not be used to
declare an entity with linkage.
DR 757 relaxes this restriction for C++0x. */
tree t = (cxx_dialect > cxx98 ? NULL_TREE
: no_linkage_check (TREE_TYPE (decl), /*relaxed_p=*/false));
if (t)
{
if (TYPE_ANONYMOUS_P (t))
{
if (DECL_EXTERN_C_P (decl))
/* Allow this; it's pretty common in C. */
;
else
{
/* DRs 132, 319 and 389 seem to indicate types with
no linkage can only be used to declare extern "C"
entities. Since it's not always an error in the
ISO C++ 90 Standard, we only issue a warning. */
warning (0, "anonymous type with no linkage used to declare "
"variable %q#D with linkage", decl);
if (DECL_ORIGINAL_TYPE (TYPE_NAME (t)))
warning (0, "%q+#D does not refer to the unqualified "
"type, so it is not used for linkage",
TYPE_NAME (t));
}
}
else
warning (0, "type %qT with no linkage used to declare variable "
"%q#D with linkage", t, decl);
}
}
else
DECL_INTERFACE_KNOWN (decl) = 1;
return decl;
}
/* Create and return a canonical pointer to member function type, for
TYPE, which is a POINTER_TYPE to a METHOD_TYPE. */
tree
build_ptrmemfunc_type (tree type)
{
tree field, fields;
tree t;
tree unqualified_variant = NULL_TREE;
if (type == error_mark_node)
return type;
/* If a canonical type already exists for this type, use it. We use
this method instead of type_hash_canon, because it only does a
simple equality check on the list of field members. */
if ((t = TYPE_GET_PTRMEMFUNC_TYPE (type)))
return t;
/* Make sure that we always have the unqualified pointer-to-member
type first. */
if (cp_type_quals (type) != TYPE_UNQUALIFIED)
unqualified_variant
= build_ptrmemfunc_type (TYPE_MAIN_VARIANT (type));
t = make_class_type (RECORD_TYPE);
xref_basetypes (t, NULL_TREE);
/* Let the front end know this is a pointer to member function... */
TYPE_PTRMEMFUNC_FLAG (t) = 1;
/* ... and not really a class type. */
SET_CLASS_TYPE_P (t, 0);
field = build_decl (input_location, FIELD_DECL, pfn_identifier, type);
fields = field;
field = build_decl (input_location, FIELD_DECL, delta_identifier,
delta_type_node);
DECL_CHAIN (field) = fields;
fields = field;
finish_builtin_struct (t, "__ptrmemfunc_type", fields, ptr_type_node);
/* Zap out the name so that the back end will give us the debugging
information for this anonymous RECORD_TYPE. */
TYPE_NAME (t) = NULL_TREE;
/* If this is not the unqualified form of this pointer-to-member
type, set the TYPE_MAIN_VARIANT for this type to be the
unqualified type. Since they are actually RECORD_TYPEs that are
not variants of each other, we must do this manually.
As we just built a new type there is no need to do yet another copy. */
if (cp_type_quals (type) != TYPE_UNQUALIFIED)
{
int type_quals = cp_type_quals (type);
TYPE_READONLY (t) = (type_quals & TYPE_QUAL_CONST) != 0;
TYPE_VOLATILE (t) = (type_quals & TYPE_QUAL_VOLATILE) != 0;
TYPE_RESTRICT (t) = (type_quals & TYPE_QUAL_RESTRICT) != 0;
TYPE_MAIN_VARIANT (t) = unqualified_variant;
TYPE_NEXT_VARIANT (t) = TYPE_NEXT_VARIANT (unqualified_variant);
TYPE_NEXT_VARIANT (unqualified_variant) = t;
TREE_TYPE (TYPE_BINFO (t)) = t;
}
/* Cache this pointer-to-member type so that we can find it again
later. */
TYPE_SET_PTRMEMFUNC_TYPE (type, t);
if (TYPE_STRUCTURAL_EQUALITY_P (type))
SET_TYPE_STRUCTURAL_EQUALITY (t);
else if (TYPE_CANONICAL (type) != type)
TYPE_CANONICAL (t) = build_ptrmemfunc_type (TYPE_CANONICAL (type));
return t;
}
/* Create and return a pointer to data member type. */
tree
build_ptrmem_type (tree class_type, tree member_type)
{
if (TREE_CODE (member_type) == METHOD_TYPE)
{
cp_cv_quals quals = type_memfn_quals (member_type);
member_type = build_memfn_type (member_type, class_type, quals);
return build_ptrmemfunc_type (build_pointer_type (member_type));
}
else
{
gcc_assert (TREE_CODE (member_type) != FUNCTION_TYPE);
return build_offset_type (class_type, member_type);
}
}
/* DECL is a VAR_DECL defined in-class, whose TYPE is also given.
Check to see that the definition is valid. Issue appropriate error
messages. Return 1 if the definition is particularly bad, or 0
otherwise. */
int
check_static_variable_definition (tree decl, tree type)
{
/* If DECL is declared constexpr, we'll do the appropriate checks
in check_initializer. */
if (DECL_P (decl) && DECL_DECLARED_CONSTEXPR_P (decl))
return 0;
else if (cxx_dialect >= cxx0x && !INTEGRAL_OR_ENUMERATION_TYPE_P (type))
{
if (literal_type_p (type))
error ("%<constexpr%> needed for in-class initialization of static "
"data member %q#D of non-integral type", decl);
else
error ("in-class initialization of static data member %q#D of "
"non-literal type", decl);
return 1;
}
/* Motion 10 at San Diego: If a static const integral data member is
initialized with an integral constant expression, the initializer
may appear either in the declaration (within the class), or in
the definition, but not both. If it appears in the class, the
member is a member constant. The file-scope definition is always
required. */
if (!ARITHMETIC_TYPE_P (type) && TREE_CODE (type) != ENUMERAL_TYPE)
{
error ("invalid in-class initialization of static data member "
"of non-integral type %qT",
type);
return 1;
}
else if (!CP_TYPE_CONST_P (type))
error ("ISO C++ forbids in-class initialization of non-const "
"static member %qD",
decl);
else if (!INTEGRAL_OR_ENUMERATION_TYPE_P (type))
pedwarn (input_location, OPT_pedantic, "ISO C++ forbids initialization of member constant "
"%qD of non-integral type %qT", decl, type);
return 0;
}
/* Given the SIZE (i.e., number of elements) in an array, compute an
appropriate index type for the array. If non-NULL, NAME is the
name of the thing being declared. */
tree
compute_array_index_type (tree name, tree size, tsubst_flags_t complain)
{
tree type;
tree itype;
tree osize = size;
tree abi_1_itype = NULL_TREE;
if (error_operand_p (size))
return error_mark_node;
type = TREE_TYPE (size);
/* type_dependent_expression_p? */
if (!dependent_type_p (type))
{
mark_rvalue_use (size);
if (cxx_dialect < cxx0x && TREE_CODE (size) == NOP_EXPR
&& TREE_SIDE_EFFECTS (size))
/* In C++98, we mark a non-constant array bound with a magic
NOP_EXPR with TREE_SIDE_EFFECTS; don't fold in that case. */;
else
{
size = fold_non_dependent_expr (size);
if (CLASS_TYPE_P (type)
&& CLASSTYPE_LITERAL_P (type))
{
size = build_expr_type_conversion (WANT_INT, size, true);
if (size == error_mark_node)
return error_mark_node;
type = TREE_TYPE (size);
/* We didn't support this case in GCC 3.2, so don't bother
trying to model it now in ABI v1. */
abi_1_itype = error_mark_node;
}
size = maybe_constant_value (size);
if (!TREE_CONSTANT (size))
size = osize;
}
if (error_operand_p (size))
return error_mark_node;
/* The array bound must be an integer type. */
if (!INTEGRAL_OR_UNSCOPED_ENUMERATION_TYPE_P (type))
{
if (!(complain & tf_error))
return error_mark_node;
if (name)
error ("size of array %qD has non-integral type %qT", name, type);
else
error ("size of array has non-integral type %qT", type);
size = integer_one_node;
type = TREE_TYPE (size);
}
}
/* A type is dependent if it is...an array type constructed from any
dependent type or whose size is specified by a constant expression
that is value-dependent. */
/* We can only call value_dependent_expression_p on integral constant
expressions; treat non-constant expressions as dependent, too. */
if (processing_template_decl
&& (dependent_type_p (type)
|| !TREE_CONSTANT (size) || value_dependent_expression_p (size)))
{
/* We cannot do any checking for a SIZE that isn't known to be
constant. Just build the index type and mark that it requires
structural equality checks. */
itype = build_index_type (build_min (MINUS_EXPR, sizetype,
size, integer_one_node));
TYPE_DEPENDENT_P (itype) = 1;
TYPE_DEPENDENT_P_VALID (itype) = 1;
SET_TYPE_STRUCTURAL_EQUALITY (itype);
return itype;
}
if (!abi_version_at_least (2) && processing_template_decl
&& abi_1_itype == NULL_TREE)
/* For abi-1, we handled all instances in templates the same way,
even when they were non-dependent. This affects the manglings
produced. So, we do the normal checking for non-dependent
sizes, but at the end we'll return the same type that abi-1
would have, but with TYPE_CANONICAL set to the "right"
value that the current ABI would provide. */
abi_1_itype = build_index_type (build_min (MINUS_EXPR, sizetype,
osize, integer_one_node));
/* Normally, the array-bound will be a constant. */
if (TREE_CODE (size) == INTEGER_CST)
{
/* Check to see if the array bound overflowed. Make that an
error, no matter how generous we're being. */
constant_expression_error (size);
/* An array must have a positive number of elements. */
if (INT_CST_LT (size, integer_zero_node))
{
if (!(complain & tf_error))
return error_mark_node;
if (name)
error ("size of array %qD is negative", name);
else
error ("size of array is negative");
size = integer_one_node;
}
/* As an extension we allow zero-sized arrays. */
else if (integer_zerop (size))
{
if (!(complain & tf_error))
/* We must fail if performing argument deduction (as
indicated by the state of complain), so that
another substitution can be found. */
return error_mark_node;
else if (in_system_header)
/* Allow them in system headers because glibc uses them. */;
else if (name)
pedwarn (input_location, OPT_pedantic, "ISO C++ forbids zero-size array %qD", name);
else
pedwarn (input_location, OPT_pedantic, "ISO C++ forbids zero-size array");
}
}
else if (TREE_CONSTANT (size)
/* We don't allow VLAs at non-function scopes, or during
tentative template substitution. */
|| !at_function_scope_p () || !(complain & tf_error))
{
if (!(complain & tf_error))
return error_mark_node;
/* `(int) &fn' is not a valid array bound. */
if (name)
error ("size of array %qD is not an integral constant-expression",
name);
else
error ("size of array is not an integral constant-expression");
size = integer_one_node;
}
else if (pedantic && warn_vla != 0)
{
if (name)
pedwarn (input_location, OPT_Wvla, "ISO C++ forbids variable length array %qD", name);
else
pedwarn (input_location, OPT_Wvla, "ISO C++ forbids variable length array");
}
else if (warn_vla > 0)
{
if (name)
warning (OPT_Wvla,
"variable length array %qD is used", name);
else
warning (OPT_Wvla,
"variable length array is used");
}
if (processing_template_decl && !TREE_CONSTANT (size))
/* A variable sized array. */
itype = build_min (MINUS_EXPR, sizetype, size, integer_one_node);
else
{
HOST_WIDE_INT saved_processing_template_decl;
/* Compute the index of the largest element in the array. It is
one less than the number of elements in the array. We save
and restore PROCESSING_TEMPLATE_DECL so that computations in
cp_build_binary_op will be appropriately folded. */
saved_processing_template_decl = processing_template_decl;
processing_template_decl = 0;
itype = cp_build_binary_op (input_location,
MINUS_EXPR,
cp_convert (ssizetype, size),
cp_convert (ssizetype, integer_one_node),
tf_warning_or_error);
itype = fold (itype);
processing_template_decl = saved_processing_template_decl;
if (!TREE_CONSTANT (itype))
{
/* A variable sized array. */
if (TREE_SIDE_EFFECTS (itype))
/* Use get_temp_regvar rather than variable_size here so that
people walking expressions that use a variable of this type
don't walk into this expression. */
itype = get_temp_regvar (TREE_TYPE (itype), itype);
else
itype = variable_size (itype);
}
/* Make sure that there was no overflow when creating to a signed
index type. (For example, on a 32-bit machine, an array with
size 2^32 - 1 is too big.) */
else if (TREE_CODE (itype) == INTEGER_CST
&& TREE_OVERFLOW (itype))
{
if (!(complain & tf_error))
return error_mark_node;
error ("overflow in array dimension");
TREE_OVERFLOW (itype) = 0;
}
}
/* Create and return the appropriate index type. */
if (abi_1_itype && abi_1_itype != error_mark_node)
{
tree t = build_index_type (itype);
TYPE_CANONICAL (abi_1_itype) = TYPE_CANONICAL (t);
itype = abi_1_itype;
}
else
itype = build_index_type (itype);
/* If the index type were dependent, we would have returned early, so
remember that it isn't. */
TYPE_DEPENDENT_P (itype) = 0;
TYPE_DEPENDENT_P_VALID (itype) = 1;
return itype;
}
/* Returns the scope (if any) in which the entity declared by
DECLARATOR will be located. If the entity was declared with an
unqualified name, NULL_TREE is returned. */
tree
get_scope_of_declarator (const cp_declarator *declarator)
{
while (declarator && declarator->kind != cdk_id)
declarator = declarator->declarator;
/* If the declarator-id is a SCOPE_REF, the scope in which the
declaration occurs is the first operand. */
if (declarator
&& declarator->u.id.qualifying_scope)
return declarator->u.id.qualifying_scope;
/* Otherwise, the declarator is not a qualified name; the entity will
be declared in the current scope. */
return NULL_TREE;
}
/* Returns an ARRAY_TYPE for an array with SIZE elements of the
indicated TYPE. If non-NULL, NAME is the NAME of the declaration
with this type. */
static tree
create_array_type_for_decl (tree name, tree type, tree size)
{
tree itype = NULL_TREE;
/* If things have already gone awry, bail now. */
if (type == error_mark_node || size == error_mark_node)
return error_mark_node;
/* If there are some types which cannot be array elements,
issue an error-message and return. */
switch (TREE_CODE (type))
{
case VOID_TYPE:
if (name)
error ("declaration of %qD as array of void", name);
else
error ("creating array of void");
return error_mark_node;
case FUNCTION_TYPE:
if (name)
error ("declaration of %qD as array of functions", name);
else
error ("creating array of functions");
return error_mark_node;
case REFERENCE_TYPE:
if (name)
error ("declaration of %qD as array of references", name);
else
error ("creating array of references");
return error_mark_node;
case METHOD_TYPE:
if (name)
error ("declaration of %qD as array of function members", name);
else
error ("creating array of function members");
return error_mark_node;
default:
break;
}
/* [dcl.array]
The constant expressions that specify the bounds of the arrays
can be omitted only for the first member of the sequence. */
if (TREE_CODE (type) == ARRAY_TYPE && !TYPE_DOMAIN (type))
{
if (name)
error ("declaration of %qD as multidimensional array must "
"have bounds for all dimensions except the first",
name);
else
error ("multidimensional array must have bounds for all "
"dimensions except the first");
return error_mark_node;
}
/* Figure out the index type for the array. */
if (size)
itype = compute_array_index_type (name, size, tf_warning_or_error);
/* [dcl.array]
T is called the array element type; this type shall not be [...] an
abstract class type. */
abstract_virtuals_error (name, type);
return build_cplus_array_type (type, itype);
}
/* Check that it's OK to declare a function with the indicated TYPE.
SFK indicates the kind of special function (if any) that this
function is. OPTYPE is the type given in a conversion operator
declaration, or the class type for a constructor/destructor.
Returns the actual return type of the function; that
may be different than TYPE if an error occurs, or for certain
special functions. */
static tree
check_special_function_return_type (special_function_kind sfk,
tree type,
tree optype)
{
switch (sfk)
{
case sfk_constructor:
if (type)
error ("return type specification for constructor invalid");
if (targetm.cxx.cdtor_returns_this () && !TYPE_FOR_JAVA (optype))
type = build_pointer_type (optype);
else
type = void_type_node;
break;
case sfk_destructor:
if (type)
error ("return type specification for destructor invalid");
/* We can't use the proper return type here because we run into
problems with ambiguous bases and covariant returns.
Java classes are left unchanged because (void *) isn't a valid
Java type, and we don't want to change the Java ABI. */
if (targetm.cxx.cdtor_returns_this () && !TYPE_FOR_JAVA (optype))
type = build_pointer_type (void_type_node);
else
type = void_type_node;
break;
case sfk_conversion:
if (type)
error ("return type specified for %<operator %T%>", optype);
type = optype;
break;
default:
gcc_unreachable ();
}
return type;
}
/* A variable or data member (whose unqualified name is IDENTIFIER)
has been declared with the indicated TYPE. If the TYPE is not
acceptable, issue an error message and return a type to use for
error-recovery purposes. */
tree
check_var_type (tree identifier, tree type)
{
if (VOID_TYPE_P (type))
{
if (!identifier)
error ("unnamed variable or field declared void");
else if (TREE_CODE (identifier) == IDENTIFIER_NODE)
{
gcc_assert (!IDENTIFIER_OPNAME_P (identifier));
error ("variable or field %qE declared void", identifier);
}
else
error ("variable or field declared void");
type = error_mark_node;
}
return type;
}
/* Given declspecs and a declarator (abstract or otherwise), determine
the name and type of the object declared and construct a DECL node
for it.
DECLSPECS points to the representation of declaration-specifier
sequence that precedes declarator.
DECL_CONTEXT says which syntactic context this declaration is in:
NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
FUNCDEF for a function definition. Like NORMAL but a few different
error messages in each case. Return value may be zero meaning
this definition is too screwy to try to parse.
MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
handle member functions (which have FIELD context).
Return value may be zero meaning this definition is too screwy to
try to parse.
PARM for a parameter declaration (either within a function prototype
or before a function body). Make a PARM_DECL, or return void_type_node.
TPARM for a template parameter declaration.
CATCHPARM for a parameter declaration before a catch clause.
TYPENAME if for a typename (in a cast or sizeof).
Don't make a DECL node; just return the ..._TYPE node.
FIELD for a struct or union field; make a FIELD_DECL.
BITFIELD for a field with specified width.
INITIALIZED is as for start_decl.
ATTRLIST is a pointer to the list of attributes, which may be NULL
if there are none; *ATTRLIST may be modified if attributes from inside
the declarator should be applied to the declaration.
When this function is called, scoping variables (such as
CURRENT_CLASS_TYPE) should reflect the scope in which the
declaration occurs, not the scope in which the new declaration will
be placed. For example, on:
void S::f() { ... }
when grokdeclarator is called for `S::f', the CURRENT_CLASS_TYPE
should not be `S'.
Returns a DECL (if a declarator is present), a TYPE (if there is no
declarator, in cases like "struct S;"), or the ERROR_MARK_NODE if an
error occurs. */
tree
grokdeclarator (const cp_declarator *declarator,
const cp_decl_specifier_seq *declspecs,
enum decl_context decl_context,
int initialized,
tree* attrlist)
{
tree type = NULL_TREE;
int longlong = 0;
int explicit_int128 = 0;
int virtualp, explicitp, friendp, inlinep, staticp;
int explicit_int = 0;
int explicit_char = 0;
int defaulted_int = 0;
tree dependent_name = NULL_TREE;
tree typedef_decl = NULL_TREE;
const char *name = NULL;
tree typedef_type = NULL_TREE;
/* True if this declarator is a function definition. */
bool funcdef_flag = false;
cp_declarator_kind innermost_code = cdk_error;
int bitfield = 0;
#if 0
/* See the code below that used this. */
tree decl_attr = NULL_TREE;
#endif
/* Keep track of what sort of function is being processed
so that we can warn about default return values, or explicit
return values which do not match prescribed defaults. */
special_function_kind sfk = sfk_none;
tree dname = NULL_TREE;
tree ctor_return_type = NULL_TREE;
enum overload_flags flags = NO_SPECIAL;
/* cv-qualifiers that apply to the declarator, for a declaration of
a member function. */
cp_cv_quals memfn_quals = TYPE_UNQUALIFIED;
/* cv-qualifiers that apply to the type specified by the DECLSPECS. */
int type_quals;
tree raises = NULL_TREE;
int template_count = 0;
tree returned_attrs = NULL_TREE;
tree parms = NULL_TREE;
const cp_declarator *id_declarator;
/* The unqualified name of the declarator; either an
IDENTIFIER_NODE, BIT_NOT_EXPR, or TEMPLATE_ID_EXPR. */
tree unqualified_id;
/* The class type, if any, in which this entity is located,
or NULL_TREE if none. Note that this value may be different from
the current class type; for example if an attempt is made to declare
"A::f" inside "B", this value will be "A". */
tree ctype = current_class_type;
/* The NAMESPACE_DECL for the namespace in which this entity is
located. If an unqualified name is used to declare the entity,
this value will be NULL_TREE, even if the entity is located at
namespace scope. */
tree in_namespace = NULL_TREE;
cp_storage_class storage_class;
bool unsigned_p, signed_p, short_p, long_p, thread_p;
bool type_was_error_mark_node = false;
bool parameter_pack_p = declarator? declarator->parameter_pack_p : false;
bool template_type_arg = false;
bool template_parm_flag = false;
bool constexpr_p = declspecs->specs[(int) ds_constexpr];
const char *errmsg;
signed_p = declspecs->specs[(int)ds_signed];
unsigned_p = declspecs->specs[(int)ds_unsigned];
short_p = declspecs->specs[(int)ds_short];
long_p = declspecs->specs[(int)ds_long];
longlong = declspecs->specs[(int)ds_long] >= 2;
explicit_int128 = declspecs->explicit_int128_p;
thread_p = declspecs->specs[(int)ds_thread];
if (decl_context == FUNCDEF)
funcdef_flag = true, decl_context = NORMAL;
else if (decl_context == MEMFUNCDEF)
funcdef_flag = true, decl_context = FIELD;
else if (decl_context == BITFIELD)
bitfield = 1, decl_context = FIELD;
else if (decl_context == TEMPLATE_TYPE_ARG)
template_type_arg = true, decl_context = TYPENAME;
else if (decl_context == TPARM)
template_parm_flag = true, decl_context = PARM;
if (initialized > 1)
funcdef_flag = true;
/* Look inside a declarator for the name being declared
and get it as a string, for an error message. */
for (id_declarator = declarator;
id_declarator;
id_declarator = id_declarator->declarator)
{
if (id_declarator->kind != cdk_id)
innermost_code = id_declarator->kind;
switch (id_declarator->kind)
{
case cdk_function:
if (id_declarator->declarator
&& id_declarator->declarator->kind == cdk_id)
{
sfk = id_declarator->declarator->u.id.sfk;
if (sfk == sfk_destructor)
flags = DTOR_FLAG;
}
break;
case cdk_id:
{
tree qualifying_scope = id_declarator->u.id.qualifying_scope;
tree decl = id_declarator->u.id.unqualified_name;
if (!decl)
break;
if (qualifying_scope)
{
if (at_function_scope_p ())
{
/* [dcl.meaning]
A declarator-id shall not be qualified except
for ...
None of the cases are permitted in block
scope. */
if (qualifying_scope == global_namespace)
error ("invalid use of qualified-name %<::%D%>",
decl);
else if (TYPE_P (qualifying_scope))
error ("invalid use of qualified-name %<%T::%D%>",
qualifying_scope, decl);
else
error ("invalid use of qualified-name %<%D::%D%>",
qualifying_scope, decl);
return error_mark_node;
}
else if (TYPE_P (qualifying_scope))
{
ctype = qualifying_scope;
if (innermost_code != cdk_function
&& current_class_type
&& !UNIQUELY_DERIVED_FROM_P (ctype,
current_class_type))
{
error ("type %qT is not derived from type %qT",
ctype, current_class_type);
return error_mark_node;
}
}
else if (TREE_CODE (qualifying_scope) == NAMESPACE_DECL)
in_namespace = qualifying_scope;
}
switch (TREE_CODE (decl))
{
case BIT_NOT_EXPR:
{
tree type;
if (innermost_code != cdk_function)
{
error ("declaration of %qD as non-function", decl);
return error_mark_node;
}
else if (!qualifying_scope
&& !(current_class_type && at_class_scope_p ()))
{
error ("declaration of %qD as non-member", decl);
return error_mark_node;
}
type = TREE_OPERAND (decl, 0);
if (TYPE_P (type))
type = constructor_name (type);
name = identifier_to_locale (IDENTIFIER_POINTER (type));
dname = decl;
}
break;
case TEMPLATE_ID_EXPR:
{
tree fns = TREE_OPERAND (decl, 0);
dname = fns;
if (TREE_CODE (dname) != IDENTIFIER_NODE)
{
gcc_assert (is_overloaded_fn (dname));
dname = DECL_NAME (get_first_fn (dname));
}
}
/* Fall through. */
case IDENTIFIER_NODE:
if (TREE_CODE (decl) == IDENTIFIER_NODE)
dname = decl;
if (C_IS_RESERVED_WORD (dname))
{
error ("declarator-id missing; using reserved word %qD",
dname);
name = identifier_to_locale (IDENTIFIER_POINTER (dname));
}
else if (!IDENTIFIER_TYPENAME_P (dname))
name = identifier_to_locale (IDENTIFIER_POINTER (dname));
else
{
gcc_assert (flags == NO_SPECIAL);
flags = TYPENAME_FLAG;
ctor_return_type = TREE_TYPE (dname);
sfk = sfk_conversion;
if (is_typename_at_global_scope (dname))
name = identifier_to_locale (IDENTIFIER_POINTER (dname));
else
name = "<invalid operator>";
}
break;
default:
gcc_unreachable ();
}
break;
}
case cdk_array:
case cdk_pointer:
case cdk_reference:
case cdk_ptrmem:
break;
case cdk_error:
return error_mark_node;
default:
gcc_unreachable ();
}
if (id_declarator->kind == cdk_id)
break;
}
/* [dcl.fct.edf]
The declarator in a function-definition shall have the form
D1 ( parameter-declaration-clause) ... */
if (funcdef_flag && innermost_code != cdk_function)
{
error ("function definition does not declare parameters");
return error_mark_node;
}
if (((dname && IDENTIFIER_OPNAME_P (dname)) || flags == TYPENAME_FLAG)
&& innermost_code != cdk_function
&& ! (ctype && !declspecs->any_specifiers_p))
{
error ("declaration of %qD as non-function", dname);
return error_mark_node;
}
/* Anything declared one level down from the top level
must be one of the parameters of a function
(because the body is at least two levels down). */
/* This heuristic cannot be applied to C++ nodes! Fixed, however,
by not allowing C++ class definitions to specify their parameters
with xdecls (must be spec.d in the parmlist).
Since we now wait to push a class scope until we are sure that
we are in a legitimate method context, we must set oldcname
explicitly (since current_class_name is not yet alive).
We also want to avoid calling this a PARM if it is in a namespace. */
if (decl_context == NORMAL && !toplevel_bindings_p ())
{
struct cp_binding_level *b = current_binding_level;
current_binding_level = b->level_chain;
if (current_binding_level != 0 && toplevel_bindings_p ())
decl_context = PARM;
current_binding_level = b;
}
if (name == NULL)
name = decl_context == PARM ? "parameter" : "type name";
if (constexpr_p && declspecs->specs[(int)ds_typedef])
{
error ("%<constexpr%> cannot appear in a typedef declaration");
return error_mark_node;
}
/* If there were multiple types specified in the decl-specifier-seq,
issue an error message. */
if (declspecs->multiple_types_p)
{
error ("two or more data types in declaration of %qs", name);
return error_mark_node;
}
if (declspecs->conflicting_specifiers_p)
{
error ("conflicting specifiers in declaration of %qs", name);
return error_mark_node;
}
/* Extract the basic type from the decl-specifier-seq. */
type = declspecs->type;
if (type == error_mark_node)
{
type = NULL_TREE;
type_was_error_mark_node = true;
}
/* If the entire declaration is itself tagged as deprecated then
suppress reports of deprecated items. */
if (type && TREE_DEPRECATED (type)
&& deprecated_state != DEPRECATED_SUPPRESS)
warn_deprecated_use (type, NULL_TREE);
if (type && TREE_CODE (type) == TYPE_DECL)
{
typedef_decl = type;
type = TREE_TYPE (typedef_decl);
if (TREE_DEPRECATED (type)
&& DECL_ARTIFICIAL (typedef_decl)
&& deprecated_state != DEPRECATED_SUPPRESS)
warn_deprecated_use (type, NULL_TREE);
}
/* No type at all: default to `int', and set DEFAULTED_INT
because it was not a user-defined typedef. */
if (type == NULL_TREE && (signed_p || unsigned_p || long_p || short_p))
{
/* These imply 'int'. */
type = integer_type_node;
defaulted_int = 1;
}
/* Gather flags. */
explicit_int = declspecs->explicit_int_p;
explicit_char = declspecs->explicit_char_p;
#if 0
/* See the code below that used this. */
if (typedef_decl)
decl_attr = DECL_ATTRIBUTES (typedef_decl);
#endif
typedef_type = type;
if (sfk != sfk_conversion)
ctor_return_type = ctype;
if (sfk != sfk_none)
type = check_special_function_return_type (sfk, type,
ctor_return_type);
else if (type == NULL_TREE)
{
int is_main;
explicit_int = -1;
/* We handle `main' specially here, because 'main () { }' is so
common. With no options, it is allowed. With -Wreturn-type,
it is a warning. It is only an error with -pedantic-errors. */
is_main = (funcdef_flag
&& dname && TREE_CODE (dname) == IDENTIFIER_NODE
&& MAIN_NAME_P (dname)
&& ctype == NULL_TREE
&& in_namespace == NULL_TREE
&& current_namespace == global_namespace);
if (type_was_error_mark_node)
/* We've already issued an error, don't complain more. */;
else if (in_system_header || flag_ms_extensions)
/* Allow it, sigh. */;
else if (! is_main)
permerror (input_location, "ISO C++ forbids declaration of %qs with no type", name);
else if (pedantic)
pedwarn (input_location, OPT_pedantic,
"ISO C++ forbids declaration of %qs with no type", name);
else
warning (OPT_Wreturn_type,
"ISO C++ forbids declaration of %qs with no type", name);
type = integer_type_node;
}
ctype = NULL_TREE;
/* Now process the modifiers that were specified
and check for invalid combinations. */
/* Long double is a special combination. */
if (long_p && !longlong && TYPE_MAIN_VARIANT (type) == double_type_node)
{
long_p = false;
type = cp_build_qualified_type (long_double_type_node,
cp_type_quals (type));
}
/* Check all other uses of type modifiers. */
if (unsigned_p || signed_p || long_p || short_p)
{
int ok = 0;
if ((signed_p || unsigned_p) && TREE_CODE (type) != INTEGER_TYPE)
error ("%<signed%> or %<unsigned%> invalid for %qs", name);
else if (signed_p && unsigned_p)
error ("%<signed%> and %<unsigned%> specified together for %qs", name);
else if (longlong && TREE_CODE (type) != INTEGER_TYPE)
error ("%<long long%> invalid for %qs", name);
else if (explicit_int128 && TREE_CODE (type) != INTEGER_TYPE)
error ("%<__int128%> invalid for %qs", name);
else if (long_p && TREE_CODE (type) == REAL_TYPE)
error ("%<long%> invalid for %qs", name);
else if (short_p && TREE_CODE (type) == REAL_TYPE)
error ("%<short%> invalid for %qs", name);
else if ((long_p || short_p) && TREE_CODE (type) != INTEGER_TYPE)
error ("%<long%> or %<short%> invalid for %qs", name);
else if ((long_p || short_p || explicit_char || explicit_int) && explicit_int128)
error ("%<long%>, %<int%>, %<short%>, or %<char%> invalid for %qs", name);
else if ((long_p || short_p) && explicit_char)
error ("%<long%> or %<short%> specified with char for %qs", name);
else if (long_p && short_p)
error ("%<long%> and %<short%> specified together for %qs", name);
else if (type == char16_type_node || type == char32_type_node)
{
if (signed_p || unsigned_p)
error ("%<signed%> or %<unsigned%> invalid for %qs", name);
else if (short_p || long_p)
error ("%<short%> or %<long%> invalid for %qs", name);
}
else
{
ok = 1;
if (!explicit_int && !defaulted_int && !explicit_char && !explicit_int128 && pedantic)
{
pedwarn (input_location, OPT_pedantic,
"long, short, signed or unsigned used invalidly for %qs",
name);
if (flag_pedantic_errors)
ok = 0;
}
if (explicit_int128)
{
if (int128_integer_type_node == NULL_TREE)
{
error ("%<__int128%> is not supported by this target");
ok = 0;
}
else if (pedantic)
{
pedwarn (input_location, OPT_pedantic,
"ISO C++ does not support %<__int128%> for %qs",
name);
if (flag_pedantic_errors)
ok = 0;
}
}
}
/* Discard the type modifiers if they are invalid. */
if (! ok)
{
unsigned_p = false;
signed_p = false;
long_p = false;
short_p = false;
longlong = 0;
explicit_int128 = false;
}
}
/* Decide whether an integer type is signed or not.
Optionally treat bitfields as signed by default. */
if (unsigned_p
/* [class.bit]
It is implementation-defined whether a plain (neither
explicitly signed or unsigned) char, short, int, or long
bit-field is signed or unsigned.
Naturally, we extend this to long long as well. Note that
this does not include wchar_t. */
|| (bitfield && !flag_signed_bitfields
&& !signed_p
/* A typedef for plain `int' without `signed' can be
controlled just like plain `int', but a typedef for
`signed int' cannot be so controlled. */
&& !(typedef_decl
&& C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl))
&& TREE_CODE (type) == INTEGER_TYPE
&& !same_type_p (TYPE_MAIN_VARIANT (type), wchar_type_node)))
{
if (explicit_int128)
type = int128_unsigned_type_node;
else if (longlong)
type = long_long_unsigned_type_node;
else if (long_p)
type = long_unsigned_type_node;
else if (short_p)
type = short_unsigned_type_node;
else if (type == char_type_node)
type = unsigned_char_type_node;
else if (typedef_decl)
type = unsigned_type_for (type);
else
type = unsigned_type_node;
}
else if (signed_p && type == char_type_node)
type = signed_char_type_node;
else if (explicit_int128)
type = int128_integer_type_node;
else if (longlong)
type = long_long_integer_type_node;
else if (long_p)
type = long_integer_type_node;
else if (short_p)
type = short_integer_type_node;
if (declspecs->specs[(int)ds_complex])
{
if (TREE_CODE (type) != INTEGER_TYPE && TREE_CODE (type) != REAL_TYPE)
error ("complex invalid for %qs", name);
/* If we just have "complex", it is equivalent to
"complex double", but if any modifiers at all are specified it is
the complex form of TYPE. E.g, "complex short" is
"complex short int". */
else if (defaulted_int && ! longlong && ! explicit_int128
&& ! (long_p || short_p || signed_p || unsigned_p))
type = complex_double_type_node;
else if (type == integer_type_node)
type = complex_integer_type_node;
else if (type == float_type_node)
type = complex_float_type_node;
else if (type == double_type_node)
type = complex_double_type_node;
else if (type == long_double_type_node)
type = complex_long_double_type_node;
else
type = build_complex_type (type);
}
type_quals = TYPE_UNQUALIFIED;
if (declspecs->specs[(int)ds_const])
type_quals |= TYPE_QUAL_CONST;
if (declspecs->specs[(int)ds_volatile])
type_quals |= TYPE_QUAL_VOLATILE;
if (declspecs->specs[(int)ds_restrict])
type_quals |= TYPE_QUAL_RESTRICT;
if (sfk == sfk_conversion && type_quals != TYPE_UNQUALIFIED)
error ("qualifiers are not allowed on declaration of %<operator %T%>",
ctor_return_type);
type_quals |= cp_type_quals (type);
type = cp_build_qualified_type_real
(type, type_quals, ((typedef_decl && !DECL_ARTIFICIAL (typedef_decl)
? tf_ignore_bad_quals : 0) | tf_warning_or_error));
/* We might have ignored or rejected some of the qualifiers. */
type_quals = cp_type_quals (type);
staticp = 0;
inlinep = !! declspecs->specs[(int)ds_inline];
virtualp = !! declspecs->specs[(int)ds_virtual];
explicitp = !! declspecs->specs[(int)ds_explicit];
storage_class = declspecs->storage_class;
if (storage_class == sc_static)
staticp = 1 + (decl_context == FIELD);
if (virtualp && staticp == 2)
{
error ("member %qD cannot be declared both virtual and static", dname);
storage_class = sc_none;
staticp = 0;
}
friendp = !! declspecs->specs[(int)ds_friend];
if (dependent_name && !friendp)
{
error ("%<%T::%D%> is not a valid declarator", ctype, dependent_name);
return error_mark_node;
}
/* Issue errors about use of storage classes for parameters. */
if (decl_context == PARM)
{
if (declspecs->specs[(int)ds_typedef])
{
error ("typedef declaration invalid in parameter declaration");
return error_mark_node;
}
else if (template_parm_flag && storage_class != sc_none)
{
error ("storage class specified for template parameter %qs", name);
return error_mark_node;
}
else if (storage_class == sc_static
|| storage_class == sc_extern
|| thread_p)
error ("storage class specifiers invalid in parameter declarations");
if (type_uses_auto (type))
{
error ("parameter declared %<auto%>");
type = error_mark_node;
}
/* Function parameters cannot be constexpr. If we saw one, moan
and pretend it wasn't there. */
if (constexpr_p)
{
error ("a parameter cannot be declared %<constexpr%>");
constexpr_p = 0;
}
}
/* Give error if `virtual' is used outside of class declaration. */
if (virtualp
&& (current_class_name == NULL_TREE || decl_context != FIELD))
{
error ("%<virtual%> outside class declaration");
virtualp = 0;
}
/* Static anonymous unions are dealt with here. */
if (staticp && decl_context == TYPENAME
&& declspecs->type
&& ANON_AGGR_TYPE_P (declspecs->type))
decl_context = FIELD;
/* Warn about storage classes that are invalid for certain
kinds of declarations (parameters, typenames, etc.). */
if (thread_p
&& ((storage_class
&& storage_class != sc_extern
&& storage_class != sc_static)
|| declspecs->specs[(int)ds_typedef]))
{
error ("multiple storage classes in declaration of %qs", name);
thread_p = false;
}
if (decl_context != NORMAL
&& ((storage_class != sc_none
&& storage_class != sc_mutable)
|| thread_p))
{
if ((decl_context == PARM || decl_context == CATCHPARM)
&& (storage_class == sc_register
|| storage_class == sc_auto))
;
else if (declspecs->specs[(int)ds_typedef])
;
else if (decl_context == FIELD
/* C++ allows static class elements. */
&& storage_class == sc_static)
/* C++ also allows inlines and signed and unsigned elements,
but in those cases we don't come in here. */
;
else
{
if (decl_context == FIELD)
error ("storage class specified for %qs", name);
else
{
if (decl_context == PARM || decl_context == CATCHPARM)
error ("storage class specified for parameter %qs", name);
else
error ("storage class specified for typename");
}
if (storage_class == sc_register
|| storage_class == sc_auto
|| storage_class == sc_extern
|| thread_p)
storage_class = sc_none;
}
}
else if (storage_class == sc_extern && funcdef_flag
&& ! toplevel_bindings_p ())
error ("nested function %qs declared %<extern%>", name);
else if (toplevel_bindings_p ())
{
if (storage_class == sc_auto)
error ("top-level declaration of %qs specifies %<auto%>", name);
}
else if (thread_p
&& storage_class != sc_extern
&& storage_class != sc_static)
{
error ("function-scope %qs implicitly auto and declared %<__thread%>",
name);
thread_p = false;
}
if (storage_class && friendp)
{
error ("storage class specifiers invalid in friend function declarations");
storage_class = sc_none;
staticp = 0;
}
if (!id_declarator)
unqualified_id = NULL_TREE;
else
{
unqualified_id = id_declarator->u.id.unqualified_name;
switch (TREE_CODE (unqualified_id))
{
case BIT_NOT_EXPR:
unqualified_id = TREE_OPERAND (unqualified_id, 0);
if (TYPE_P (unqualified_id))
unqualified_id = constructor_name (unqualified_id);
break;
case IDENTIFIER_NODE:
case TEMPLATE_ID_EXPR:
break;
default:
gcc_unreachable ();
}
}
/* Determine the type of the entity declared by recurring on the
declarator. */
for (; declarator; declarator = declarator->declarator)
{
const cp_declarator *inner_declarator;
tree attrs;
if (type == error_mark_node)
return error_mark_node;
attrs = declarator->attributes;
if (attrs)
{
int attr_flags;
attr_flags = 0;
if (declarator == NULL || declarator->kind == cdk_id)
attr_flags |= (int) ATTR_FLAG_DECL_NEXT;
if (declarator->kind == cdk_function)
attr_flags |= (int) ATTR_FLAG_FUNCTION_NEXT;
if (declarator->kind == cdk_array)
attr_flags |= (int) ATTR_FLAG_ARRAY_NEXT;
returned_attrs = decl_attributes (&type,
chainon (returned_attrs, attrs),
attr_flags);
}
if (declarator->kind == cdk_id)
break;
inner_declarator = declarator->declarator;
switch (declarator->kind)
{
case cdk_array:
type = create_array_type_for_decl (dname, type,
declarator->u.array.bounds);
break;
case cdk_function:
{
tree arg_types;
int funcdecl_p;
/* Declaring a function type.
Make sure we have a valid type for the function to return. */
if (type_quals != TYPE_UNQUALIFIED)
{
if (SCALAR_TYPE_P (type) || VOID_TYPE_P (type))
warning (OPT_Wignored_qualifiers,
"type qualifiers ignored on function return type");
/* We now know that the TYPE_QUALS don't apply to the
decl, but to its return type. */
type_quals = TYPE_UNQUALIFIED;
}
errmsg = targetm.invalid_return_type (type);
if (errmsg)
{
error (errmsg);
type = integer_type_node;
}
/* Error about some types functions can't return. */
if (TREE_CODE (type) == FUNCTION_TYPE)
{
error ("%qs declared as function returning a function", name);
return error_mark_node;
}
if (TREE_CODE (type) == ARRAY_TYPE)
{
error ("%qs declared as function returning an array", name);
return error_mark_node;
}
/* Pick up type qualifiers which should be applied to `this'. */
memfn_quals = declarator->u.function.qualifiers;
/* Pick up the exception specifications. */
raises = declarator->u.function.exception_specification;
/* Say it's a definition only for the CALL_EXPR
closest to the identifier. */
funcdecl_p = inner_declarator && inner_declarator->kind == cdk_id;
/* Handle a late-specified return type. */
if (funcdecl_p)
{
if (type_uses_auto (type))
{
if (!declarator->u.function.late_return_type)
{
error ("%qs function uses %<auto%> type specifier without"
" late return type", name);
return error_mark_node;
}
else if (!is_auto (type))
{
error ("%qs function with late return type has"
" %qT as its type rather than plain %<auto%>",
name, type);
return error_mark_node;
}
}
else if (declarator->u.function.late_return_type)
{
error ("%qs function with late return type not declared"
" with %<auto%> type specifier", name);
return error_mark_node;
}
}
type = splice_late_return_type
(type, declarator->u.function.late_return_type);
if (type == error_mark_node)
return error_mark_node;
if (ctype == NULL_TREE
&& decl_context == FIELD
&& funcdecl_p
&& (friendp == 0 || dname == current_class_name))
ctype = current_class_type;
if (ctype && (sfk == sfk_constructor
|| sfk == sfk_destructor))
{
/* We are within a class's scope. If our declarator name
is the same as the class name, and we are defining
a function, then it is a constructor/destructor, and
therefore returns a void type. */
/* ISO C++ 12.4/2. A destructor may not be declared
const or volatile. A destructor may not be
static.
ISO C++ 12.1. A constructor may not be declared
const or volatile. A constructor may not be
virtual. A constructor may not be static. */
if (staticp == 2)
error ((flags == DTOR_FLAG)
? "destructor cannot be static member function"
: "constructor cannot be static member function");
if (memfn_quals)
{
error ((flags == DTOR_FLAG)
? "destructors may not be cv-qualified"
: "constructors may not be cv-qualified");
memfn_quals = TYPE_UNQUALIFIED;
}
if (decl_context == FIELD
&& !member_function_or_else (ctype,
current_class_type,
flags))
return error_mark_node;
if (flags != DTOR_FLAG)
{
/* It's a constructor. */
if (explicitp == 1)
explicitp = 2;
if (virtualp)
{
permerror (input_location, "constructors cannot be declared virtual");
virtualp = 0;
}
if (decl_context == FIELD
&& sfk != sfk_constructor)
return error_mark_node;
}
if (decl_context == FIELD)
staticp = 0;
}
else if (friendp)
{
if (initialized)
error ("can%'t initialize friend function %qs", name);
if (virtualp)
{
/* Cannot be both friend and virtual. */
error ("virtual functions cannot be friends");
friendp = 0;
}
if (decl_context == NORMAL)
error ("friend declaration not in class definition");
if (current_function_decl && funcdef_flag)
error ("can%'t define friend function %qs in a local "
"class definition",
name);
}
else if (ctype && sfk == sfk_conversion)
{
if (explicitp == 1)
{
maybe_warn_cpp0x (CPP0X_EXPLICIT_CONVERSION);
explicitp = 2;
}
}
arg_types = grokparms (declarator->u.function.parameters,
&parms);
if (inner_declarator
&& inner_declarator->kind == cdk_id
&& inner_declarator->u.id.sfk == sfk_destructor
&& arg_types != void_list_node)
{
error ("destructors may not have parameters");
arg_types = void_list_node;
parms = NULL_TREE;
}
type = build_function_type (type, arg_types);
}
break;
case cdk_pointer:
case cdk_reference:
case cdk_ptrmem:
/* Filter out pointers-to-references and references-to-references.
We can get these if a TYPE_DECL is used. */
if (TREE_CODE (type) == REFERENCE_TYPE)
{
if (declarator->kind != cdk_reference)
{
error ("cannot declare pointer to %q#T", type);
type = TREE_TYPE (type);
}
/* In C++0x, we allow reference to reference declarations
that occur indirectly through typedefs [7.1.3/8 dcl.typedef]
and template type arguments [14.3.1/4 temp.arg.type]. The
check for direct reference to reference declarations, which
are still forbidden, occurs below. Reasoning behind the change
can be found in DR106, DR540, and the rvalue reference
proposals. */
else if (cxx_dialect == cxx98)
{
error ("cannot declare reference to %q#T", type);
type = TREE_TYPE (type);
}
}
else if (VOID_TYPE_P (type))
{
if (declarator->kind == cdk_reference)
error ("cannot declare reference to %q#T", type);
else if (declarator->kind == cdk_ptrmem)
error ("cannot declare pointer to %q#T member", type);
}
/* We now know that the TYPE_QUALS don't apply to the decl,
but to the target of the pointer. */
type_quals = TYPE_UNQUALIFIED;
if (declarator->kind == cdk_ptrmem
&& (TREE_CODE (type) == FUNCTION_TYPE
|| (memfn_quals && TREE_CODE (type) == METHOD_TYPE)))
{
memfn_quals |= type_memfn_quals (type);
type = build_memfn_type (type,
declarator->u.pointer.class_type,
memfn_quals);
if (type == error_mark_node)
return error_mark_node;
memfn_quals = TYPE_UNQUALIFIED;
}
if (TREE_CODE (type) == FUNCTION_TYPE
&& type_memfn_quals (type) != TYPE_UNQUALIFIED)
error (declarator->kind == cdk_reference
? G_("cannot declare reference to qualified function type %qT")
: G_("cannot declare pointer to qualified function type %qT"),
type);
/* When the pointed-to type involves components of variable size,
care must be taken to ensure that the size evaluation code is
emitted early enough to dominate all the possible later uses
and late enough for the variables on which it depends to have
been assigned.
This is expected to happen automatically when the pointed-to
type has a name/declaration of it's own, but special attention
is required if the type is anonymous.
We handle the NORMAL and FIELD contexts here by inserting a
dummy statement that just evaluates the size at a safe point
and ensures it is not deferred until e.g. within a deeper
conditional context (c++/43555).
We expect nothing to be needed here for PARM or TYPENAME.
Evaluating the size at this point for TYPENAME would
actually be incorrect, as we might be in the middle of an
expression with side effects on the pointed-to type size
"arguments" prior to the pointer declaration point and the
size evaluation could end up prior to the side effects. */
if (!TYPE_NAME (type)
&& (decl_context == NORMAL || decl_context == FIELD)
&& at_function_scope_p ()
&& variably_modified_type_p (type, NULL_TREE))
finish_expr_stmt (TYPE_SIZE (type));
if (declarator->kind == cdk_reference)
{
/* In C++0x, the type we are creating a reference to might be
a typedef which is itself a reference type. In that case,
we follow the reference collapsing rules in
[7.1.3/8 dcl.typedef] to create the final reference type:
"If a typedef TD names a type that is a reference to a type
T, an attempt to create the type 'lvalue reference to cv TD'
creates the type 'lvalue reference to T,' while an attempt
to create the type "rvalue reference to cv TD' creates the
type TD."
*/
if (!VOID_TYPE_P (type))
type = cp_build_reference_type
((TREE_CODE (type) == REFERENCE_TYPE
? TREE_TYPE (type) : type),
(declarator->u.reference.rvalue_ref
&& (TREE_CODE(type) != REFERENCE_TYPE
|| TYPE_REF_IS_RVALUE (type))));
/* In C++0x, we need this check for direct reference to
reference declarations, which are forbidden by
[8.3.2/5 dcl.ref]. Reference to reference declarations
are only allowed indirectly through typedefs and template
type arguments. Example:
void foo(int & &); // invalid ref-to-ref decl
typedef int & int_ref;
void foo(int_ref &); // valid ref-to-ref decl
*/
if (inner_declarator && inner_declarator->kind == cdk_reference)
error ("cannot declare reference to %q#T, which is not "
"a typedef or a template type argument", type);
}
else if (TREE_CODE (type) == METHOD_TYPE)
type = build_ptrmemfunc_type (build_pointer_type (type));
else if (declarator->kind == cdk_ptrmem)
{
gcc_assert (TREE_CODE (declarator->u.pointer.class_type)
!= NAMESPACE_DECL);
if (declarator->u.pointer.class_type == error_mark_node)
/* We will already have complained. */
type = error_mark_node;
else
type = build_ptrmem_type (declarator->u.pointer.class_type,
type);
}
else
type = build_pointer_type (type);
/* Process a list of type modifier keywords (such as
const or volatile) that were given inside the `*' or `&'. */
if (declarator->u.pointer.qualifiers)
{
type
= cp_build_qualified_type (type,
declarator->u.pointer.qualifiers);
type_quals = cp_type_quals (type);
}
ctype = NULL_TREE;
break;
case cdk_error:
break;
default:
gcc_unreachable ();
}
}
/* A `constexpr' specifier used in an object declaration declares
the object as `const'. */
if (constexpr_p && innermost_code != cdk_function)
{
if (type_quals & TYPE_QUAL_CONST)
error ("both %<const%> and %<constexpr%> cannot be used here");
if (type_quals & TYPE_QUAL_VOLATILE)
error ("both %<volatile%> and %<constexpr%> cannot be used here");
type_quals |= TYPE_QUAL_CONST;
type = cp_build_qualified_type (type, type_quals);
}
if (unqualified_id && TREE_CODE (unqualified_id) == TEMPLATE_ID_EXPR
&& TREE_CODE (type) != FUNCTION_TYPE
&& TREE_CODE (type) != METHOD_TYPE)
{
error ("template-id %qD used as a declarator",
unqualified_id);
unqualified_id = dname;
}
/* If TYPE is a FUNCTION_TYPE, but the function name was explicitly
qualified with a class-name, turn it into a METHOD_TYPE, unless
we know that the function is static. We take advantage of this
opportunity to do other processing that pertains to entities
explicitly declared to be class members. Note that if DECLARATOR
is non-NULL, we know it is a cdk_id declarator; otherwise, we
would not have exited the loop above. */
if (declarator
&& declarator->u.id.qualifying_scope
&& TYPE_P (declarator->u.id.qualifying_scope))
{
tree t;
ctype = declarator->u.id.qualifying_scope;
ctype = TYPE_MAIN_VARIANT (ctype);
t = ctype;
while (t != NULL_TREE && CLASS_TYPE_P (t))
{
/* You're supposed to have one `template <...>' for every
template class, but you don't need one for a full
specialization. For example:
template <class T> struct S{};
template <> struct S<int> { void f(); };
void S<int>::f () {}
is correct; there shouldn't be a `template <>' for the
definition of `S<int>::f'. */
if (CLASSTYPE_TEMPLATE_SPECIALIZATION (t)
&& !any_dependent_template_arguments_p (CLASSTYPE_TI_ARGS (t)))
/* T is an explicit (not partial) specialization. All
containing classes must therefore also be explicitly
specialized. */
break;
if ((CLASSTYPE_USE_TEMPLATE (t) || CLASSTYPE_IS_TEMPLATE (t))
&& PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (t)))
template_count += 1;
t = TYPE_MAIN_DECL (t);
t = DECL_CONTEXT (t);
}
if (ctype == current_class_type)
{
if (friendp)
{
permerror (input_location, "member functions are implicitly friends of their class");
friendp = 0;
}
else
permerror (declarator->id_loc,
"extra qualification %<%T::%> on member %qs",
ctype, name);
}
else if (/* If the qualifying type is already complete, then we
can skip the following checks. */
!COMPLETE_TYPE_P (ctype)
&& (/* If the function is being defined, then
qualifying type must certainly be complete. */
funcdef_flag
/* A friend declaration of "T::f" is OK, even if
"T" is a template parameter. But, if this
function is not a friend, the qualifying type
must be a class. */
|| (!friendp && !CLASS_TYPE_P (ctype))
/* For a declaration, the type need not be
complete, if either it is dependent (since there
is no meaningful definition of complete in that
case) or the qualifying class is currently being
defined. */
|| !(dependent_type_p (ctype)
|| currently_open_class (ctype)))
/* Check that the qualifying type is complete. */
&& !complete_type_or_else (ctype, NULL_TREE))
return error_mark_node;
else if (TREE_CODE (type) == FUNCTION_TYPE)
{
if (current_class_type
&& (!friendp || funcdef_flag))
{
error (funcdef_flag
? "cannot define member function %<%T::%s%> within %<%T%>"
: "cannot declare member function %<%T::%s%> within %<%T%>",
ctype, name, current_class_type);
return error_mark_node;
}
}
else if (declspecs->specs[(int)ds_typedef]
&& current_class_type)
{
error ("cannot declare member %<%T::%s%> within %qT",
ctype, name, current_class_type);
return error_mark_node;
}
}
if (ctype == NULL_TREE && decl_context == FIELD && friendp == 0)
ctype = current_class_type;
/* A constexpr non-static member function is implicitly const. */
if (constexpr_p && ctype && staticp == 0
&& TREE_CODE (type) == FUNCTION_TYPE
&& sfk != sfk_constructor && sfk != sfk_destructor)
memfn_quals |= TYPE_QUAL_CONST;
/* Now TYPE has the actual type. */
if (returned_attrs)
{
if (attrlist)
*attrlist = chainon (returned_attrs, *attrlist);
else
attrlist = &returned_attrs;
}
/* Handle parameter packs. */
if (parameter_pack_p)
{
if (decl_context == PARM)
/* Turn the type into a pack expansion.*/
type = make_pack_expansion (type);
else
error ("non-parameter %qs cannot be a parameter pack", name);
}
/* Did array size calculations overflow? */
if (TREE_CODE (type) == ARRAY_TYPE
&& COMPLETE_TYPE_P (type)
&& TREE_CODE (TYPE_SIZE_UNIT (type)) == INTEGER_CST
&& TREE_OVERFLOW (TYPE_SIZE_UNIT (type)))
{
error ("size of array %qs is too large", name);
/* If we proceed with the array type as it is, we'll eventually
crash in tree_low_cst(). */
type = error_mark_node;
}
if ((decl_context == FIELD || decl_context == PARM)
&& !processing_template_decl
&& variably_modified_type_p (type, NULL_TREE))
{
if (decl_context == FIELD)
error ("data member may not have variably modified type %qT", type);
else
error ("parameter may not have variably modified type %qT", type);
type = error_mark_node;
}
if (explicitp == 1 || (explicitp && friendp))
{
/* [dcl.fct.spec] The explicit specifier shall only be used in
declarations of constructors within a class definition. */
error ("only declarations of constructors can be %<explicit%>");
explicitp = 0;
}
if (storage_class == sc_mutable)
{
if (decl_context != FIELD || friendp)
{
error ("non-member %qs cannot be declared %<mutable%>", name);
storage_class = sc_none;
}
else if (decl_context == TYPENAME || declspecs->specs[(int)ds_typedef])
{
error ("non-object member %qs cannot be declared %<mutable%>", name);
storage_class = sc_none;
}
else if (TREE_CODE (type) == FUNCTION_TYPE
|| TREE_CODE (type) == METHOD_TYPE)
{
error ("function %qs cannot be declared %<mutable%>", name);
storage_class = sc_none;
}
else if (staticp)
{
error ("static %qs cannot be declared %<mutable%>", name);
storage_class = sc_none;
}
else if (type_quals & TYPE_QUAL_CONST)
{
error ("const %qs cannot be declared %<mutable%>", name);
storage_class = sc_none;
}
else if (TREE_CODE (type) == REFERENCE_TYPE)
{
permerror (input_location, "reference %qs cannot be declared "
"%<mutable%>", name);
storage_class = sc_none;
}
}
/* If this is declaring a typedef name, return a TYPE_DECL. */
if (declspecs->specs[(int)ds_typedef] && decl_context != TYPENAME)
{
tree decl;
/* Note that the grammar rejects storage classes
in typenames, fields or parameters. */
if (current_lang_name == lang_name_java)
TYPE_FOR_JAVA (type) = 1;
/* This declaration:
typedef void f(int) const;
declares a function type which is not a member of any
particular class, but which is cv-qualified; for
example "f S::*" declares a pointer to a const-qualified
member function of S. We record the cv-qualification in the
function type. */
if (memfn_quals && TREE_CODE (type) == FUNCTION_TYPE)
{
type = apply_memfn_quals (type, memfn_quals);
/* We have now dealt with these qualifiers. */
memfn_quals = TYPE_UNQUALIFIED;
}
if (decl_context == FIELD)
decl = build_lang_decl (TYPE_DECL, unqualified_id, type);
else
decl = build_decl (input_location, TYPE_DECL, unqualified_id, type);
if (id_declarator && declarator->u.id.qualifying_scope) {
error_at (DECL_SOURCE_LOCATION (decl),
"typedef name may not be a nested-name-specifier");
TREE_TYPE (decl) = error_mark_node;
}
if (decl_context != FIELD)
{
if (!current_function_decl)
DECL_CONTEXT (decl) = FROB_CONTEXT (current_namespace);
else if (DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (current_function_decl)
|| (DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P
(current_function_decl)))
/* The TYPE_DECL is "abstract" because there will be
clones of this constructor/destructor, and there will
be copies of this TYPE_DECL generated in those
clones. */
DECL_ABSTRACT (decl) = 1;
}
else if (constructor_name_p (unqualified_id, current_class_type))
permerror (input_location, "ISO C++ forbids nested type %qD with same name "
"as enclosing class",
unqualified_id);
/* If the user declares "typedef struct {...} foo" then the
struct will have an anonymous name. Fill that name in now.
Nothing can refer to it, so nothing needs know about the name
change. */
if (type != error_mark_node
&& unqualified_id
&& TYPE_NAME (type)
&& TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
&& TYPE_ANONYMOUS_P (type)
&& cp_type_quals (type) == TYPE_UNQUALIFIED)
{
tree t;
/* Replace the anonymous name with the real name everywhere. */
for (t = TYPE_MAIN_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t))
{
if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t)))
/* We do not rename the debug info representing the
anonymous tagged type because the standard says in
[dcl.typedef] that the naming applies only for
linkage purposes. */
/*debug_hooks->set_name (t, decl);*/
TYPE_NAME (t) = decl;
}
if (TYPE_LANG_SPECIFIC (type))
TYPE_WAS_ANONYMOUS (type) = 1;
/* If this is a typedef within a template class, the nested
type is a (non-primary) template. The name for the
template needs updating as well. */
if (TYPE_LANG_SPECIFIC (type) && CLASSTYPE_TEMPLATE_INFO (type))
DECL_NAME (CLASSTYPE_TI_TEMPLATE (type))
= TYPE_IDENTIFIER (type);
/* Adjust linkage now that we aren't anonymous anymore. */
set_linkage_according_to_type (type, TYPE_MAIN_DECL (type));
determine_visibility (TYPE_MAIN_DECL (type));
/* FIXME remangle member functions; member functions of a
type with external linkage have external linkage. */
}
if (signed_p
|| (typedef_decl && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
C_TYPEDEF_EXPLICITLY_SIGNED (decl) = 1;
bad_specifiers (decl, BSP_TYPE, virtualp,
memfn_quals != TYPE_UNQUALIFIED,
inlinep, friendp, raises != NULL_TREE);
return decl;
}
/* Detect the case of an array type of unspecified size
which came, as such, direct from a typedef name.
We must copy the type, so that the array's domain can be
individually set by the object's initializer. */
if (type && typedef_type
&& TREE_CODE (type) == ARRAY_TYPE && !TYPE_DOMAIN (type)
&& TYPE_MAIN_VARIANT (type) == TYPE_MAIN_VARIANT (typedef_type))
type = build_cplus_array_type (TREE_TYPE (type), NULL_TREE);
/* Detect where we're using a typedef of function type to declare a
function. PARMS will not be set, so we must create it now. */
if (type == typedef_type && TREE_CODE (type) == FUNCTION_TYPE)
{
tree decls = NULL_TREE;
tree args;
for (args = TYPE_ARG_TYPES (type);
args && args != void_list_node;
args = TREE_CHAIN (args))
{
tree decl = cp_build_parm_decl (NULL_TREE, TREE_VALUE (args));
DECL_CHAIN (decl) = decls;
decls = decl;
}
parms = nreverse (decls);
if (decl_context != TYPENAME)
{
/* A cv-qualifier-seq shall only be part of the function type
for a non-static member function. [8.3.5/4 dcl.fct] */
if (type_memfn_quals (type) != TYPE_UNQUALIFIED
&& (current_class_type == NULL_TREE || staticp) )
{
error (staticp
? G_("qualified function types cannot be used to "
"declare static member functions")
: G_("qualified function types cannot be used to "
"declare free functions"));
type = TYPE_MAIN_VARIANT (type);
}
/* The qualifiers on the function type become the qualifiers on
the non-static member function. */
memfn_quals |= type_memfn_quals (type);
type_quals = TYPE_UNQUALIFIED;
}
}
/* If this is a type name (such as, in a cast or sizeof),
compute the type and return it now. */
if (decl_context == TYPENAME)
{
/* Note that the grammar rejects storage classes
in typenames, fields or parameters. */
if (type_quals != TYPE_UNQUALIFIED)
type_quals = TYPE_UNQUALIFIED;
/* Special case: "friend class foo" looks like a TYPENAME context. */
if (friendp)
{
if (type_quals != TYPE_UNQUALIFIED)
{
error ("type qualifiers specified for friend class declaration");
type_quals = TYPE_UNQUALIFIED;
}
if (inlinep)
{
error ("%<inline%> specified for friend class declaration");
inlinep = 0;
}
if (!current_aggr)
{
/* Don't allow friend declaration without a class-key. */
if (TREE_CODE (type) == TEMPLATE_TYPE_PARM)
permerror (input_location, "template parameters cannot be friends");
else if (TREE_CODE (type) == TYPENAME_TYPE)
permerror (input_location, "friend declaration requires class-key, "
"i.e. %<friend class %T::%D%>",
TYPE_CONTEXT (type), TYPENAME_TYPE_FULLNAME (type));
else
permerror (input_location, "friend declaration requires class-key, "
"i.e. %<friend %#T%>",
type);
}
/* Only try to do this stuff if we didn't already give up. */
if (type != integer_type_node)
{
/* A friendly class? */
if (current_class_type)
make_friend_class (current_class_type, TYPE_MAIN_VARIANT (type),
/*complain=*/true);
else
error ("trying to make class %qT a friend of global scope",
type);
type = void_type_node;
}
}
else if (memfn_quals)
{
if (ctype == NULL_TREE
&& TREE_CODE (type) == METHOD_TYPE)
ctype = TYPE_METHOD_BASETYPE (type);
if (ctype)
type = build_memfn_type (type, ctype, memfn_quals);
/* Core issue #547: need to allow this in template type args. */
else if (template_type_arg && TREE_CODE (type) == FUNCTION_TYPE)
type = apply_memfn_quals (type, memfn_quals);
else
error ("invalid qualifiers on non-member function type");
}
return type;
}
else if (unqualified_id == NULL_TREE && decl_context != PARM
&& decl_context != CATCHPARM
&& TREE_CODE (type) != UNION_TYPE
&& ! bitfield)
{
error ("abstract declarator %qT used as declaration", type);
return error_mark_node;
}
/* Only functions may be declared using an operator-function-id. */
if (unqualified_id
&& IDENTIFIER_OPNAME_P (unqualified_id)
&& TREE_CODE (type) != FUNCTION_TYPE
&& TREE_CODE (type) != METHOD_TYPE)
{
error ("declaration of %qD as non-function", unqualified_id);
return error_mark_node;
}
/* We don't check parameter types here because we can emit a better
error message later. */
if (decl_context != PARM)
{
type = check_var_type (unqualified_id, type);
if (type == error_mark_node)
return error_mark_node;
}
/* Now create the decl, which may be a VAR_DECL, a PARM_DECL
or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
if (decl_context == PARM || decl_context == CATCHPARM)
{
if (ctype || in_namespace)
error ("cannot use %<::%> in parameter declaration");
/* A parameter declared as an array of T is really a pointer to T.
One declared as a function is really a pointer to a function.
One declared as a member is really a pointer to member. */
if (TREE_CODE (type) == ARRAY_TYPE)
{
/* Transfer const-ness of array into that of type pointed to. */
type = build_pointer_type (TREE_TYPE (type));
type_quals = TYPE_UNQUALIFIED;
}
else if (TREE_CODE (type) == FUNCTION_TYPE)
type = build_pointer_type (type);
}
if (ctype && TREE_CODE (type) == FUNCTION_TYPE && staticp < 2
&& !NEW_DELETE_OPNAME_P (unqualified_id))
type = build_memfn_type (type, ctype, memfn_quals);
{
tree decl;
if (decl_context == PARM)
{
decl = cp_build_parm_decl (unqualified_id, type);
bad_specifiers (decl, BSP_PARM, virtualp,
memfn_quals != TYPE_UNQUALIFIED,
inlinep, friendp, raises != NULL_TREE);
}
else if (decl_context == FIELD)
{
/* The C99 flexible array extension. */
if (!staticp && TREE_CODE (type) == ARRAY_TYPE
&& TYPE_DOMAIN (type) == NULL_TREE)
{
tree itype = compute_array_index_type (dname, integer_zero_node,
tf_warning_or_error);
type = build_cplus_array_type (TREE_TYPE (type), itype);
}
if (type == error_mark_node)
{
/* Happens when declaring arrays of sizes which
are error_mark_node, for example. */
decl = NULL_TREE;
}
else if (in_namespace && !friendp)
{
/* Something like struct S { int N::j; }; */
error ("invalid use of %<::%>");
return error_mark_node;
}
else if (TREE_CODE (type) == FUNCTION_TYPE
|| TREE_CODE (type) == METHOD_TYPE)
{
int publicp = 0;
tree function_context;
if (friendp == 0)
{
/* This should never happen in pure C++ (the check
could be an assert). It could happen in
Objective-C++ if someone writes invalid code that
uses a function declaration for an instance
variable or property (instance variables and
properties are parsed as FIELD_DECLs, but they are
part of an Objective-C class, not a C++ class).
That code is invalid and is caught by this
check. */
if (!ctype)
{
error ("declaration of function %qD in invalid context",
unqualified_id);
return error_mark_node;
}
/* ``A union may [ ... ] not [ have ] virtual functions.''
ARM 9.5 */
if (virtualp && TREE_CODE (ctype) == UNION_TYPE)
{
error ("function %qD declared virtual inside a union",
unqualified_id);
return error_mark_node;
}
if (NEW_DELETE_OPNAME_P (unqualified_id))
{
if (virtualp)
{
error ("%qD cannot be declared virtual, since it "
"is always static",
unqualified_id);
virtualp = 0;
}
}
}
/* Check that the name used for a destructor makes sense. */
if (sfk == sfk_destructor)
{
tree uqname = id_declarator->u.id.unqualified_name;
if (!ctype)
{
gcc_assert (friendp);
error ("expected qualified name in friend declaration "
"for destructor %qD", uqname);
return error_mark_node;
}
if (!check_dtor_name (ctype, TREE_OPERAND (uqname, 0)))
{
error ("declaration of %qD as member of %qT",
uqname, ctype);
return error_mark_node;
}
if (constexpr_p)
{
error ("a destructor cannot be %<constexpr%>");
return error_mark_node;
}
}
else if (sfk == sfk_constructor && friendp && !ctype)
{
error ("expected qualified name in friend declaration "
"for constructor %qD",
id_declarator->u.id.unqualified_name);
return error_mark_node;
}
/* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
function_context = (ctype != NULL_TREE) ?
decl_function_context (TYPE_MAIN_DECL (ctype)) : NULL_TREE;
publicp = (! friendp || ! staticp)
&& function_context == NULL_TREE;
decl = grokfndecl (ctype, type,
TREE_CODE (unqualified_id) != TEMPLATE_ID_EXPR
? unqualified_id : dname,
parms,
unqualified_id,
virtualp, flags, memfn_quals, raises,
friendp ? -1 : 0, friendp, publicp,
inlinep | (2 * constexpr_p),
sfk,
funcdef_flag, template_count, in_namespace,
attrlist, declarator->id_loc);
if (decl == NULL_TREE)
return error_mark_node;
#if 0
/* This clobbers the attrs stored in `decl' from `attrlist'. */
/* The decl and setting of decl_attr is also turned off. */
decl = build_decl_attribute_variant (decl, decl_attr);
#endif
/* [class.conv.ctor]
A constructor declared without the function-specifier
explicit that can be called with a single parameter
specifies a conversion from the type of its first
parameter to the type of its class. Such a constructor
is called a converting constructor. */
if (explicitp == 2)
DECL_NONCONVERTING_P (decl) = 1;
}
else if (!staticp && !dependent_type_p (type)
&& !COMPLETE_TYPE_P (complete_type (type))
&& (TREE_CODE (type) != ARRAY_TYPE || initialized == 0))
{
if (unqualified_id)
error ("field %qD has incomplete type", unqualified_id);
else
error ("name %qT has incomplete type", type);
/* If we're instantiating a template, tell them which
instantiation made the field's type be incomplete. */
if (current_class_type
&& TYPE_NAME (current_class_type)
&& IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type))
&& declspecs->type
&& declspecs->type == type)
error (" in instantiation of template %qT",
current_class_type);
return error_mark_node;
}
else
{
if (friendp)
{
error ("%qE is neither function nor member function; "
"cannot be declared friend", unqualified_id);
friendp = 0;
}
decl = NULL_TREE;
}
if (friendp)
{
/* Friends are treated specially. */
if (ctype == current_class_type)
; /* We already issued a permerror. */
else if (decl && DECL_NAME (decl))
{
if (template_class_depth (current_class_type) == 0)
{
decl = check_explicit_specialization
(unqualified_id, decl, template_count,
2 * funcdef_flag + 4);
if (decl == error_mark_node)
return error_mark_node;
}
DECL_DECLARED_CONSTEXPR_P (decl) = constexpr_p;
decl = do_friend (ctype, unqualified_id, decl,
*attrlist, flags,
funcdef_flag);
return decl;
}
else
return error_mark_node;
}
/* Structure field. It may not be a function, except for C++. */
if (decl == NULL_TREE)
{
if (initialized)
{
if (!staticp)
{
/* An attempt is being made to initialize a non-static
member. But, from [class.mem]:
4 A member-declarator can contain a
constant-initializer only if it declares a static
member (_class.static_) of integral or enumeration
type, see _class.static.data_.
This used to be relatively common practice, but
the rest of the compiler does not correctly
handle the initialization unless the member is
static so we make it static below. */
if (cxx_dialect >= cxx0x)
{
sorry ("non-static data member initializers");
}
else
{
permerror (input_location, "ISO C++ forbids initialization of member %qD",
unqualified_id);
permerror (input_location, "making %qD static", unqualified_id);
staticp = 1;
}
}
if (uses_template_parms (type))
/* We'll check at instantiation time. */
;
else if (constexpr_p)
/* constexpr has the same requirements. */
;
else if (check_static_variable_definition (unqualified_id,
type))
/* If we just return the declaration, crashes
will sometimes occur. We therefore return
void_type_node, as if this was a friend
declaration, to cause callers to completely
ignore this declaration. */
return error_mark_node;
}
if (staticp)
{
/* C++ allows static class members. All other work
for this is done by grokfield. */
decl = build_lang_decl (VAR_DECL, unqualified_id, type);
set_linkage_for_static_data_member (decl);
/* Even if there is an in-class initialization, DECL
is considered undefined until an out-of-class
definition is provided. */
DECL_EXTERNAL (decl) = 1;
if (thread_p)
DECL_TLS_MODEL (decl) = decl_default_tls_model (decl);
if (constexpr_p && !initialized)
{
error ("constexpr static data member %qD must have an "
"initializer", decl);
constexpr_p = false;
}
}
else
{
if (constexpr_p)
{
error ("non-static data member %qE declared %<constexpr%>",
unqualified_id);
constexpr_p = false;
}
decl = build_decl (input_location,
FIELD_DECL, unqualified_id, type);
DECL_NONADDRESSABLE_P (decl) = bitfield;
if (bitfield && !unqualified_id)
TREE_NO_WARNING (decl) = 1;
if (storage_class == sc_mutable)
{
DECL_MUTABLE_P (decl) = 1;
storage_class = sc_none;
}
}
bad_specifiers (decl, BSP_FIELD, virtualp,
memfn_quals != TYPE_UNQUALIFIED,
inlinep, friendp, raises != NULL_TREE);
}
}
else if (TREE_CODE (type) == FUNCTION_TYPE
|| TREE_CODE (type) == METHOD_TYPE)
{
tree original_name;
int publicp = 0;
if (!unqualified_id)
return error_mark_node;
if (TREE_CODE (unqualified_id) == TEMPLATE_ID_EXPR)
original_name = dname;
else
original_name = unqualified_id;
if (storage_class == sc_auto)
error ("storage class %<auto%> invalid for function %qs", name);
else if (storage_class == sc_register)
error ("storage class %<register%> invalid for function %qs", name);
else if (thread_p)
error ("storage class %<__thread%> invalid for function %qs", name);
/* Function declaration not at top level.
Storage classes other than `extern' are not allowed
and `extern' makes no difference. */
if (! toplevel_bindings_p ()
&& (storage_class == sc_static
|| declspecs->specs[(int)ds_inline])
&& pedantic)
{
if (storage_class == sc_static)
pedwarn (input_location, OPT_pedantic,
"%<static%> specified invalid for function %qs "
"declared out of global scope", name);
else
pedwarn (input_location, OPT_pedantic,
"%<inline%> specifier invalid for function %qs "
"declared out of global scope", name);
}
if (ctype != NULL_TREE
&& TREE_CODE (ctype) != NAMESPACE_DECL && !MAYBE_CLASS_TYPE_P (ctype))
{
error ("%q#T is not a class or a namespace", ctype);
ctype = NULL_TREE;
}
if (ctype == NULL_TREE)
{
if (virtualp)
{
error ("virtual non-class function %qs", name);
virtualp = 0;
}
else if (sfk == sfk_constructor
|| sfk == sfk_destructor)
{
error (funcdef_flag
? "%qs defined in a non-class scope"
: "%qs declared in a non-class scope", name);
sfk = sfk_none;
}
}
/* Record presence of `static'. */
publicp = (ctype != NULL_TREE
|| storage_class == sc_extern
|| storage_class != sc_static);
decl = grokfndecl (ctype, type, original_name, parms, unqualified_id,
virtualp, flags, memfn_quals, raises,
1, friendp,
publicp, inlinep | (2 * constexpr_p), sfk,
funcdef_flag,
template_count, in_namespace, attrlist,
declarator->id_loc);
if (decl == NULL_TREE)
return error_mark_node;
if (staticp == 1)
{
int invalid_static = 0;
/* Don't allow a static member function in a class, and forbid
declaring main to be static. */
if (TREE_CODE (type) == METHOD_TYPE)
{
permerror (input_location, "cannot declare member function %qD to have "
"static linkage", decl);
invalid_static = 1;
}
else if (current_function_decl)
{
/* FIXME need arm citation */
error ("cannot declare static function inside another function");
invalid_static = 1;
}
if (invalid_static)
{
staticp = 0;
storage_class = sc_none;
}
}
}
else
{
/* It's a variable. */
/* An uninitialized decl with `extern' is a reference. */
decl = grokvardecl (type, unqualified_id,
declspecs,
initialized,
(type_quals & TYPE_QUAL_CONST) != 0,
ctype ? ctype : in_namespace);
bad_specifiers (decl, BSP_VAR, virtualp,
memfn_quals != TYPE_UNQUALIFIED,
inlinep, friendp, raises != NULL_TREE);
if (ctype)
{
DECL_CONTEXT (decl) = ctype;
if (staticp == 1)
{
permerror (input_location, "%<static%> may not be used when defining "
"(as opposed to declaring) a static data member");
staticp = 0;
storage_class = sc_none;
}
if (storage_class == sc_register && TREE_STATIC (decl))
{
error ("static member %qD declared %<register%>", decl);
storage_class = sc_none;
}
if (storage_class == sc_extern && pedantic)
{
pedwarn (input_location, OPT_pedantic,
"cannot explicitly declare member %q#D to have "
"extern linkage", decl);
storage_class = sc_none;
}
}
else if (constexpr_p && DECL_EXTERNAL (decl))
error ("declaration of constexpr variable %qD is not a definition",
decl);
}
if (storage_class == sc_extern && initialized && !funcdef_flag)
{
if (toplevel_bindings_p ())
{
/* It's common practice (and completely valid) to have a const
be initialized and declared extern. */
if (!(type_quals & TYPE_QUAL_CONST))
warning (0, "%qs initialized and declared %<extern%>", name);
}
else
{
error ("%qs has both %<extern%> and initializer", name);
return error_mark_node;
}
}
/* Record `register' declaration for warnings on &
and in case doing stupid register allocation. */
if (storage_class == sc_register)
DECL_REGISTER (decl) = 1;
else if (storage_class == sc_extern)
DECL_THIS_EXTERN (decl) = 1;
else if (storage_class == sc_static)
DECL_THIS_STATIC (decl) = 1;
/* Don't forget constexprness. */
if (constexpr_p)
DECL_DECLARED_CONSTEXPR_P (decl) = true;
/* Record constancy and volatility on the DECL itself . There's
no need to do this when processing a template; we'll do this
for the instantiated declaration based on the type of DECL. */
if (!processing_template_decl)
cp_apply_type_quals_to_decl (type_quals, decl);
return decl;
}
}
/* Subroutine of start_function. Ensure that each of the parameter
types (as listed in PARMS) is complete, as is required for a
function definition. */
static void
require_complete_types_for_parms (tree parms)
{
for (; parms; parms = DECL_CHAIN (parms))
{
if (dependent_type_p (TREE_TYPE (parms)))
continue;
if (!VOID_TYPE_P (TREE_TYPE (parms))
&& complete_type_or_else (TREE_TYPE (parms), parms))
{
relayout_decl (parms);
DECL_ARG_TYPE (parms) = type_passed_as (TREE_TYPE (parms));
}
else
/* grokparms or complete_type_or_else will have already issued
an error. */
TREE_TYPE (parms) = error_mark_node;
}
}
/* Returns nonzero if T is a local variable. */
int
local_variable_p (const_tree t)
{
if ((TREE_CODE (t) == VAR_DECL
/* A VAR_DECL with a context that is a _TYPE is a static data
member. */
&& !TYPE_P (CP_DECL_CONTEXT (t))
/* Any other non-local variable must be at namespace scope. */
&& !DECL_NAMESPACE_SCOPE_P (t))
|| (TREE_CODE (t) == PARM_DECL))
return 1;
return 0;
}
/* Like local_variable_p, but suitable for use as a tree-walking
function. */
static tree
local_variable_p_walkfn (tree *tp, int *walk_subtrees,
void *data ATTRIBUTE_UNUSED)
{
if (local_variable_p (*tp) && !DECL_ARTIFICIAL (*tp))
return *tp;
else if (TYPE_P (*tp))
*walk_subtrees = 0;
return NULL_TREE;
}
/* Check that ARG, which is a default-argument expression for a
parameter DECL, is valid. Returns ARG, or ERROR_MARK_NODE, if
something goes wrong. DECL may also be a _TYPE node, rather than a
DECL, if there is no DECL available. */
tree
check_default_argument (tree decl, tree arg)
{
tree var;
tree decl_type;
if (TREE_CODE (arg) == DEFAULT_ARG)
/* We get a DEFAULT_ARG when looking at an in-class declaration
with a default argument. Ignore the argument for now; we'll
deal with it after the class is complete. */
return arg;
if (TYPE_P (decl))
{
decl_type = decl;
decl = NULL_TREE;
}
else
decl_type = TREE_TYPE (decl);
if (arg == error_mark_node
|| decl == error_mark_node
|| TREE_TYPE (arg) == error_mark_node
|| decl_type == error_mark_node)
/* Something already went wrong. There's no need to check
further. */
return error_mark_node;
/* [dcl.fct.default]
A default argument expression is implicitly converted to the
parameter type. */
if (!TREE_TYPE (arg)
|| !can_convert_arg (decl_type, TREE_TYPE (arg), arg, LOOKUP_NORMAL))
{
if (decl)
error ("default argument for %q#D has type %qT",
decl, TREE_TYPE (arg));
else
error ("default argument for parameter of type %qT has type %qT",
decl_type, TREE_TYPE (arg));
return error_mark_node;
}
/* [dcl.fct.default]
Local variables shall not be used in default argument
expressions.
The keyword `this' shall not be used in a default argument of a
member function. */
var = cp_walk_tree_without_duplicates (&arg, local_variable_p_walkfn, NULL);
if (var)
{
error ("default argument %qE uses local variable %qD", arg, var);
return error_mark_node;
}
/* All is well. */
return arg;
}
/* Returns a deprecated type used within TYPE, or NULL_TREE if none. */
static tree
type_is_deprecated (tree type)
{
enum tree_code code;
if (TREE_DEPRECATED (type))
return type;
if (TYPE_NAME (type)
&& TREE_DEPRECATED (TYPE_NAME (type)))
return type;
/* Do warn about using typedefs to a deprecated class. */
if (TAGGED_TYPE_P (type) && type != TYPE_MAIN_VARIANT (type))
return type_is_deprecated (TYPE_MAIN_VARIANT (type));
code = TREE_CODE (type);
if (code == POINTER_TYPE || code == REFERENCE_TYPE
|| code == OFFSET_TYPE || code == FUNCTION_TYPE
|| code == METHOD_TYPE || code == ARRAY_TYPE)
return type_is_deprecated (TREE_TYPE (type));
if (TYPE_PTRMEMFUNC_P (type))
return type_is_deprecated
(TREE_TYPE (TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (type))));
return NULL_TREE;
}
/* Decode the list of parameter types for a function type.
Given the list of things declared inside the parens,
return a list of types.
If this parameter does not end with an ellipsis, we append
void_list_node.
*PARMS is set to the chain of PARM_DECLs created. */
static tree
grokparms (tree parmlist, tree *parms)
{
tree result = NULL_TREE;
tree decls = NULL_TREE;
tree parm;
int any_error = 0;
for (parm = parmlist; parm != NULL_TREE; parm = TREE_CHAIN (parm))
{
tree type = NULL_TREE;
tree init = TREE_PURPOSE (parm);
tree decl = TREE_VALUE (parm);
const char *errmsg;
if (parm == void_list_node)
break;
if (! decl || TREE_TYPE (decl) == error_mark_node)
continue;
type = TREE_TYPE (decl);
if (VOID_TYPE_P (type))
{
if (same_type_p (type, void_type_node)
&& DECL_SELF_REFERENCE_P (type)
&& !DECL_NAME (decl) && !result && TREE_CHAIN (parm) == void_list_node)
/* this is a parmlist of `(void)', which is ok. */
break;
cxx_incomplete_type_error (decl, type);
/* It's not a good idea to actually create parameters of
type `void'; other parts of the compiler assume that a
void type terminates the parameter list. */
type = error_mark_node;
TREE_TYPE (decl) = error_mark_node;
}
if (type != error_mark_node
&& TYPE_FOR_JAVA (type)
&& MAYBE_CLASS_TYPE_P (type))
{
error ("parameter %qD has Java class type", decl);
type = error_mark_node;
TREE_TYPE (decl) = error_mark_node;
init = NULL_TREE;
}
if (type != error_mark_node
&& (errmsg = targetm.invalid_parameter_type (type)))
{
error (errmsg);
type = error_mark_node;
TREE_TYPE (decl) = error_mark_node;
}
if (type != error_mark_node)
{
if (deprecated_state != DEPRECATED_SUPPRESS)
{
tree deptype = type_is_deprecated (type);
if (deptype)
warn_deprecated_use (deptype, NULL_TREE);
}
/* Top-level qualifiers on the parameters are
ignored for function types. */
type = cp_build_qualified_type (type, 0);
if (TREE_CODE (type) == METHOD_TYPE)
{
error ("parameter %qD invalidly declared method type", decl);
type = build_pointer_type (type);
TREE_TYPE (decl) = type;
}
else if (abstract_virtuals_error (decl, type))
any_error = 1; /* Seems like a good idea. */
else if (POINTER_TYPE_P (type))
{
/* [dcl.fct]/6, parameter types cannot contain pointers
(references) to arrays of unknown bound. */
tree t = TREE_TYPE (type);
int ptr = TYPE_PTR_P (type);
while (1)
{
if (TYPE_PTR_P (t))
ptr = 1;
else if (TREE_CODE (t) != ARRAY_TYPE)
break;
else if (!TYPE_DOMAIN (t))
break;
t = TREE_TYPE (t);
}
if (TREE_CODE (t) == ARRAY_TYPE)
error (ptr
? G_("parameter %qD includes pointer to array of "
"unknown bound %qT")
: G_("parameter %qD includes reference to array of "
"unknown bound %qT"),
decl, t);
}
if (any_error)
init = NULL_TREE;
else if (init && !processing_template_decl)
init = check_default_argument (decl, init);
}
if (TREE_CODE (decl) == PARM_DECL
&& FUNCTION_PARAMETER_PACK_P (decl)
&& TREE_CHAIN (parm)
&& TREE_CHAIN (parm) != void_list_node)
error ("parameter packs must be at the end of the parameter list");
DECL_CHAIN (decl) = decls;
decls = decl;
result = tree_cons (init, type, result);
}
decls = nreverse (decls);
result = nreverse (result);
if (parm)
result = chainon (result, void_list_node);
*parms = decls;
return result;
}
/* D is a constructor or overloaded `operator='.
Let T be the class in which D is declared. Then, this function
returns:
-1 if D's is an ill-formed constructor or copy assignment operator
whose first parameter is of type `T'.
0 if D is not a copy constructor or copy assignment
operator.
1 if D is a copy constructor or copy assignment operator whose
first parameter is a reference to non-const qualified T.
2 if D is a copy constructor or copy assignment operator whose
first parameter is a reference to const qualified T.
This function can be used as a predicate. Positive values indicate
a copy constructor and nonzero values indicate a copy assignment
operator. */
int
copy_fn_p (const_tree d)
{
tree args;
tree arg_type;
int result = 1;
gcc_assert (DECL_FUNCTION_MEMBER_P (d));
if (TREE_CODE (d) == TEMPLATE_DECL
|| (DECL_TEMPLATE_INFO (d)
&& DECL_MEMBER_TEMPLATE_P (DECL_TI_TEMPLATE (d))))
/* Instantiations of template member functions are never copy
functions. Note that member functions of templated classes are
represented as template functions internally, and we must
accept those as copy functions. */
return 0;
args = FUNCTION_FIRST_USER_PARMTYPE (d);
if (!args)
return 0;
arg_type = TREE_VALUE (args);
if (arg_type == error_mark_node)
return 0;
if (TYPE_MAIN_VARIANT (arg_type) == DECL_CONTEXT (d))
{
/* Pass by value copy assignment operator. */
result = -1;
}
else if (TREE_CODE (arg_type) == REFERENCE_TYPE
&& !TYPE_REF_IS_RVALUE (arg_type)
&& TYPE_MAIN_VARIANT (TREE_TYPE (arg_type)) == DECL_CONTEXT (d))
{
if (CP_TYPE_CONST_P (TREE_TYPE (arg_type)))
result = 2;
}
else
return 0;
args = TREE_CHAIN (args);
if (args && args != void_list_node && !TREE_PURPOSE (args))
/* There are more non-optional args. */
return 0;
return result;
}
/* D is a constructor or overloaded `operator='.
Let T be the class in which D is declared. Then, this function
returns true when D is a move constructor or move assignment
operator, false otherwise. */
bool
move_fn_p (const_tree d)
{
tree args;
tree arg_type;
bool result = false;
gcc_assert (DECL_FUNCTION_MEMBER_P (d));
if (cxx_dialect == cxx98)
/* There are no move constructors if we are in C++98 mode. */
return false;
if (TREE_CODE (d) == TEMPLATE_DECL
|| (DECL_TEMPLATE_INFO (d)
&& DECL_MEMBER_TEMPLATE_P (DECL_TI_TEMPLATE (d))))
/* Instantiations of template member functions are never copy
functions. Note that member functions of templated classes are
represented as template functions internally, and we must
accept those as copy functions. */
return 0;
args = FUNCTION_FIRST_USER_PARMTYPE (d);
if (!args)
return 0;
arg_type = TREE_VALUE (args);
if (arg_type == error_mark_node)
return 0;
if (TREE_CODE (arg_type) == REFERENCE_TYPE
&& TYPE_REF_IS_RVALUE (arg_type)
&& same_type_p (TYPE_MAIN_VARIANT (TREE_TYPE (arg_type)),
DECL_CONTEXT (d)))
result = true;
args = TREE_CHAIN (args);
if (args && args != void_list_node && !TREE_PURPOSE (args))
/* There are more non-optional args. */
return false;
return result;
}
/* Remember any special properties of member function DECL. */
void
grok_special_member_properties (tree decl)
{
tree class_type;
if (!DECL_NONSTATIC_MEMBER_FUNCTION_P (decl))
return;
class_type = DECL_CONTEXT (decl);
if (DECL_CONSTRUCTOR_P (decl))
{
int ctor = copy_fn_p (decl);
if (!DECL_ARTIFICIAL (decl))
TYPE_HAS_USER_CONSTRUCTOR (class_type) = 1;
if (ctor > 0)
{
/* [class.copy]
A non-template constructor for class X is a copy
constructor if its first parameter is of type X&, const
X&, volatile X& or const volatile X&, and either there
are no other parameters or else all other parameters have
default arguments. */
TYPE_HAS_COPY_CTOR (class_type) = 1;
if (user_provided_p (decl))
TYPE_HAS_COMPLEX_COPY_CTOR (class_type) = 1;
if (ctor > 1)
TYPE_HAS_CONST_COPY_CTOR (class_type) = 1;
}
else if (sufficient_parms_p (FUNCTION_FIRST_USER_PARMTYPE (decl)))
{
TYPE_HAS_DEFAULT_CONSTRUCTOR (class_type) = 1;
if (user_provided_p (decl))
TYPE_HAS_COMPLEX_DFLT (class_type) = 1;
}
else if (move_fn_p (decl) && user_provided_p (decl))
TYPE_HAS_COMPLEX_MOVE_CTOR (class_type) = 1;
else if (is_list_ctor (decl))
TYPE_HAS_LIST_CTOR (class_type) = 1;
if (DECL_DECLARED_CONSTEXPR_P (decl)
&& !copy_fn_p (decl) && !move_fn_p (decl))
TYPE_HAS_CONSTEXPR_CTOR (class_type) = 1;
}
else if (DECL_OVERLOADED_OPERATOR_P (decl) == NOP_EXPR)
{
/* [class.copy]
A non-template assignment operator for class X is a copy
assignment operator if its parameter is of type X, X&, const
X&, volatile X& or const volatile X&. */
int assop = copy_fn_p (decl);
if (assop)
{
TYPE_HAS_COPY_ASSIGN (class_type) = 1;
if (user_provided_p (decl))
TYPE_HAS_COMPLEX_COPY_ASSIGN (class_type) = 1;
if (assop != 1)
TYPE_HAS_CONST_COPY_ASSIGN (class_type) = 1;
}
else if (move_fn_p (decl) && user_provided_p (decl))
TYPE_HAS_COMPLEX_MOVE_ASSIGN (class_type) = 1;
}
/* Destructors are handled in check_methods. */
}
/* Check a constructor DECL has the correct form. Complains
if the class has a constructor of the form X(X). */
int
grok_ctor_properties (const_tree ctype, const_tree decl)
{
int ctor_parm = copy_fn_p (decl);
if (ctor_parm < 0)
{
/* [class.copy]
A declaration of a constructor for a class X is ill-formed if
its first parameter is of type (optionally cv-qualified) X
and either there are no other parameters or else all other
parameters have default arguments.
We *don't* complain about member template instantiations that
have this form, though; they can occur as we try to decide
what constructor to use during overload resolution. Since
overload resolution will never prefer such a constructor to
the non-template copy constructor (which is either explicitly
or implicitly defined), there's no need to worry about their
existence. Theoretically, they should never even be
instantiated, but that's hard to forestall. */
error ("invalid constructor; you probably meant %<%T (const %T&)%>",
ctype, ctype);
return 0;
}
return 1;
}
/* An operator with this code is unary, but can also be binary. */
static int
ambi_op_p (enum tree_code code)
{
return (code == INDIRECT_REF
|| code == ADDR_EXPR
|| code == UNARY_PLUS_EXPR
|| code == NEGATE_EXPR
|| code == PREINCREMENT_EXPR
|| code == PREDECREMENT_EXPR);
}
/* An operator with this name can only be unary. */
static int
unary_op_p (enum tree_code code)
{
return (code == TRUTH_NOT_EXPR
|| code == BIT_NOT_EXPR
|| code == COMPONENT_REF
|| code == TYPE_EXPR);
}
/* DECL is a declaration for an overloaded operator. If COMPLAIN is true,
errors are issued for invalid declarations. */
bool
grok_op_properties (tree decl, bool complain)
{
tree argtypes = TYPE_ARG_TYPES (TREE_TYPE (decl));
tree argtype;
int methodp = (TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE);
tree name = DECL_NAME (decl);
enum tree_code operator_code;
int arity;
bool ellipsis_p;
tree class_type;
/* Count the number of arguments and check for ellipsis. */
for (argtype = argtypes, arity = 0;
argtype && argtype != void_list_node;
argtype = TREE_CHAIN (argtype))
++arity;
ellipsis_p = !argtype;
class_type = DECL_CONTEXT (decl);
if (class_type && !CLASS_TYPE_P (class_type))
class_type = NULL_TREE;
if (DECL_CONV_FN_P (decl))
operator_code = TYPE_EXPR;
else
do
{
#define DEF_OPERATOR(NAME, CODE, MANGLING, ARITY, ASSN_P) \
if (ansi_opname (CODE) == name) \
{ \
operator_code = (CODE); \
break; \
} \
else if (ansi_assopname (CODE) == name) \
{ \
operator_code = (CODE); \
DECL_ASSIGNMENT_OPERATOR_P (decl) = 1; \
break; \
}
#include "operators.def"
#undef DEF_OPERATOR
gcc_unreachable ();
}
while (0);
gcc_assert (operator_code != MAX_TREE_CODES);
SET_OVERLOADED_OPERATOR_CODE (decl, operator_code);
if (class_type)
switch (operator_code)
{
case NEW_EXPR:
TYPE_HAS_NEW_OPERATOR (class_type) = 1;
break;
case DELETE_EXPR:
TYPE_GETS_DELETE (class_type) |= 1;
break;
case VEC_NEW_EXPR:
TYPE_HAS_ARRAY_NEW_OPERATOR (class_type) = 1;
break;
case VEC_DELETE_EXPR:
TYPE_GETS_DELETE (class_type) |= 2;
break;
default:
break;
}
/* [basic.std.dynamic.allocation]/1:
A program is ill-formed if an allocation function is declared
in a namespace scope other than global scope or declared static
in global scope.
The same also holds true for deallocation functions. */
if (operator_code == NEW_EXPR || operator_code == VEC_NEW_EXPR
|| operator_code == DELETE_EXPR || operator_code == VEC_DELETE_EXPR)
{
if (DECL_NAMESPACE_SCOPE_P (decl))
{
if (CP_DECL_CONTEXT (decl) != global_namespace)
{
error ("%qD may not be declared within a namespace", decl);
return false;
}
else if (!TREE_PUBLIC (decl))
{
error ("%qD may not be declared as static", decl);
return false;
}
}
}
if (operator_code == NEW_EXPR || operator_code == VEC_NEW_EXPR)
{
TREE_TYPE (decl) = coerce_new_type (TREE_TYPE (decl));
DECL_IS_OPERATOR_NEW (decl) = 1;
}
else if (operator_code == DELETE_EXPR || operator_code == VEC_DELETE_EXPR)
TREE_TYPE (decl) = coerce_delete_type (TREE_TYPE (decl));
else
{
/* An operator function must either be a non-static member function
or have at least one parameter of a class, a reference to a class,
an enumeration, or a reference to an enumeration. 13.4.0.6 */
if (! methodp || DECL_STATIC_FUNCTION_P (decl))
{
if (operator_code == TYPE_EXPR
|| operator_code == CALL_EXPR
|| operator_code == COMPONENT_REF
|| operator_code == ARRAY_REF
|| operator_code == NOP_EXPR)
{
error ("%qD must be a nonstatic member function", decl);
return false;
}
else
{
tree p;
if (DECL_STATIC_FUNCTION_P (decl))
{
error ("%qD must be either a non-static member "
"function or a non-member function", decl);
return false;
}
for (p = argtypes; p && p != void_list_node; p = TREE_CHAIN (p))
{
tree arg = non_reference (TREE_VALUE (p));
if (arg == error_mark_node)
return false;
/* MAYBE_CLASS_TYPE_P, rather than CLASS_TYPE_P, is used
because these checks are performed even on
template functions. */
if (MAYBE_CLASS_TYPE_P (arg)
|| TREE_CODE (arg) == ENUMERAL_TYPE)
break;
}
if (!p || p == void_list_node)
{
if (complain)
error ("%qD must have an argument of class or "
"enumerated type", decl);
return false;
}
}
}
/* There are no restrictions on the arguments to an overloaded
"operator ()". */
if (operator_code == CALL_EXPR)
return true;
/* Warn about conversion operators that will never be used. */
if (IDENTIFIER_TYPENAME_P (name)
&& ! DECL_TEMPLATE_INFO (decl)
&& warn_conversion
/* Warn only declaring the function; there is no need to
warn again about out-of-class definitions. */
&& class_type == current_class_type)
{
tree t = TREE_TYPE (name);
int ref = (TREE_CODE (t) == REFERENCE_TYPE);
if (ref)
t = TYPE_MAIN_VARIANT (TREE_TYPE (t));
if (TREE_CODE (t) == VOID_TYPE)
warning (OPT_Wconversion,
ref
? G_("conversion to a reference to void "
"will never use a type conversion operator")
: G_("conversion to void "
"will never use a type conversion operator"));
else if (class_type)
{
if (t == class_type)
warning (OPT_Wconversion,
ref
? G_("conversion to a reference to the same type "
"will never use a type conversion operator")
: G_("conversion to the same type "
"will never use a type conversion operator"));
/* Don't force t to be complete here. */
else if (MAYBE_CLASS_TYPE_P (t)
&& COMPLETE_TYPE_P (t)
&& DERIVED_FROM_P (t, class_type))
warning (OPT_Wconversion,
ref
? G_("conversion to a reference to a base class "
"will never use a type conversion operator")
: G_("conversion to a base class "
"will never use a type conversion operator"));
}
}
if (operator_code == COND_EXPR)
{
/* 13.4.0.3 */
error ("ISO C++ prohibits overloading operator ?:");
return false;
}
else if (ellipsis_p)
{
error ("%qD must not have variable number of arguments", decl);
return false;
}
else if (ambi_op_p (operator_code))
{
if (arity == 1)
/* We pick the one-argument operator codes by default, so
we don't have to change anything. */
;
else if (arity == 2)
{
/* If we thought this was a unary operator, we now know
it to be a binary operator. */
switch (operator_code)
{
case INDIRECT_REF:
operator_code = MULT_EXPR;
break;
case ADDR_EXPR:
operator_code = BIT_AND_EXPR;
break;
case UNARY_PLUS_EXPR:
operator_code = PLUS_EXPR;
break;
case NEGATE_EXPR:
operator_code = MINUS_EXPR;
break;
case PREINCREMENT_EXPR:
operator_code = POSTINCREMENT_EXPR;
break;
case PREDECREMENT_EXPR:
operator_code = POSTDECREMENT_EXPR;
break;
default:
gcc_unreachable ();
}
SET_OVERLOADED_OPERATOR_CODE (decl, operator_code);
if ((operator_code == POSTINCREMENT_EXPR
|| operator_code == POSTDECREMENT_EXPR)
&& ! processing_template_decl
&& ! same_type_p (TREE_VALUE (TREE_CHAIN (argtypes)), integer_type_node))
{
if (methodp)
error ("postfix %qD must take %<int%> as its argument",
decl);
else
error ("postfix %qD must take %<int%> as its second "
"argument", decl);
return false;
}
}
else
{
if (methodp)
error ("%qD must take either zero or one argument", decl);
else
error ("%qD must take either one or two arguments", decl);
return false;
}
/* More Effective C++ rule 6. */
if (warn_ecpp
&& (operator_code == POSTINCREMENT_EXPR
|| operator_code == POSTDECREMENT_EXPR
|| operator_code == PREINCREMENT_EXPR
|| operator_code == PREDECREMENT_EXPR))
{
tree arg = TREE_VALUE (argtypes);
tree ret = TREE_TYPE (TREE_TYPE (decl));
if (methodp || TREE_CODE (arg) == REFERENCE_TYPE)
arg = TREE_TYPE (arg);
arg = TYPE_MAIN_VARIANT (arg);
if (operator_code == PREINCREMENT_EXPR
|| operator_code == PREDECREMENT_EXPR)
{
if (TREE_CODE (ret) != REFERENCE_TYPE
|| !same_type_p (TYPE_MAIN_VARIANT (TREE_TYPE (ret)),
arg))
warning (OPT_Weffc__, "prefix %qD should return %qT", decl,
build_reference_type (arg));
}
else
{
if (!same_type_p (TYPE_MAIN_VARIANT (ret), arg))
warning (OPT_Weffc__, "postfix %qD should return %qT", decl, arg);
}
}
}
else if (unary_op_p (operator_code))
{
if (arity != 1)
{
if (methodp)
error ("%qD must take %<void%>", decl);
else
error ("%qD must take exactly one argument", decl);
return false;
}
}
else /* if (binary_op_p (operator_code)) */
{
if (arity != 2)
{
if (methodp)
error ("%qD must take exactly one argument", decl);
else
error ("%qD must take exactly two arguments", decl);
return false;
}
/* More Effective C++ rule 7. */
if (warn_ecpp
&& (operator_code == TRUTH_ANDIF_EXPR
|| operator_code == TRUTH_ORIF_EXPR
|| operator_code == COMPOUND_EXPR))
warning (OPT_Weffc__, "user-defined %qD always evaluates both arguments",
decl);
}
/* Effective C++ rule 23. */
if (warn_ecpp
&& arity == 2
&& !DECL_ASSIGNMENT_OPERATOR_P (decl)
&& (operator_code == PLUS_EXPR
|| operator_code == MINUS_EXPR
|| operator_code == TRUNC_DIV_EXPR
|| operator_code == MULT_EXPR
|| operator_code == TRUNC_MOD_EXPR)
&& TREE_CODE (TREE_TYPE (TREE_TYPE (decl))) == REFERENCE_TYPE)
warning (OPT_Weffc__, "%qD should return by value", decl);
/* [over.oper]/8 */
for (; argtypes && argtypes != void_list_node;
argtypes = TREE_CHAIN (argtypes))
if (TREE_PURPOSE (argtypes))
{
TREE_PURPOSE (argtypes) = NULL_TREE;
if (operator_code == POSTINCREMENT_EXPR
|| operator_code == POSTDECREMENT_EXPR)
{
pedwarn (input_location, OPT_pedantic, "%qD cannot have default arguments",
decl);
}
else
{
error ("%qD cannot have default arguments", decl);
return false;
}
}
}
return true;
}
/* Return a string giving the keyword associate with CODE. */
static const char *
tag_name (enum tag_types code)
{
switch (code)
{
case record_type:
return "struct";
case class_type:
return "class";
case union_type:
return "union";
case enum_type:
return "enum";
case typename_type:
return "typename";
default:
gcc_unreachable ();
}
}
/* Name lookup in an elaborated-type-specifier (after the keyword
indicated by TAG_CODE) has found the TYPE_DECL DECL. If the
elaborated-type-specifier is invalid, issue a diagnostic and return
error_mark_node; otherwise, return the *_TYPE to which it referred.
If ALLOW_TEMPLATE_P is true, TYPE may be a class template. */
tree
check_elaborated_type_specifier (enum tag_types tag_code,
tree decl,
bool allow_template_p)
{
tree type;
/* In the case of:
struct S { struct S *p; };
name lookup will find the TYPE_DECL for the implicit "S::S"
typedef. Adjust for that here. */
if (DECL_SELF_REFERENCE_P (decl))
decl = TYPE_NAME (TREE_TYPE (decl));
type = TREE_TYPE (decl);
/* Check TEMPLATE_TYPE_PARM first because DECL_IMPLICIT_TYPEDEF_P
is false for this case as well. */
if (TREE_CODE (type) == TEMPLATE_TYPE_PARM)
{
error ("using template type parameter %qT after %qs",
type, tag_name (tag_code));
return error_mark_node;
}
/* [dcl.type.elab]
If the identifier resolves to a typedef-name or a template
type-parameter, the elaborated-type-specifier is ill-formed.
In other words, the only legitimate declaration to use in the
elaborated type specifier is the implicit typedef created when
the type is declared. */
else if (!DECL_IMPLICIT_TYPEDEF_P (decl)
&& !DECL_SELF_REFERENCE_P (decl)
&& tag_code != typename_type)
{
error ("using typedef-name %qD after %qs", decl, tag_name (tag_code));
error ("%q+D has a previous declaration here", decl);
return error_mark_node;
}
else if (TREE_CODE (type) != RECORD_TYPE
&& TREE_CODE (type) != UNION_TYPE
&& tag_code != enum_type
&& tag_code != typename_type)
{
error ("%qT referred to as %qs", type, tag_name (tag_code));
error ("%q+T has a previous declaration here", type);
return error_mark_node;
}
else if (TREE_CODE (type) != ENUMERAL_TYPE
&& tag_code == enum_type)
{
error ("%qT referred to as enum", type);
error ("%q+T has a previous declaration here", type);
return error_mark_node;
}
else if (!allow_template_p
&& TREE_CODE (type) == RECORD_TYPE
&& CLASSTYPE_IS_TEMPLATE (type))
{
/* If a class template appears as elaborated type specifier
without a template header such as:
template <class T> class C {};
void f(class C); // No template header here
then the required template argument is missing. */
error ("template argument required for %<%s %T%>",
tag_name (tag_code),
DECL_NAME (CLASSTYPE_TI_TEMPLATE (type)));
return error_mark_node;
}
return type;
}
/* Lookup NAME in elaborate type specifier in scope according to
SCOPE and issue diagnostics if necessary.
Return *_TYPE node upon success, NULL_TREE when the NAME is not
found, and ERROR_MARK_NODE for type error. */
static tree
lookup_and_check_tag (enum tag_types tag_code, tree name,
tag_scope scope, bool template_header_p)
{
tree t;
tree decl;
if (scope == ts_global)
{
/* First try ordinary name lookup, ignoring hidden class name
injected via friend declaration. */
decl = lookup_name_prefer_type (name, 2);
/* If that fails, the name will be placed in the smallest
non-class, non-function-prototype scope according to 3.3.1/5.
We may already have a hidden name declared as friend in this
scope. So lookup again but not ignoring hidden names.
If we find one, that name will be made visible rather than
creating a new tag. */
if (!decl)
decl = lookup_type_scope (name, ts_within_enclosing_non_class);
}
else
decl = lookup_type_scope (name, scope);
if (decl && DECL_CLASS_TEMPLATE_P (decl))
decl = DECL_TEMPLATE_RESULT (decl);
if (decl && TREE_CODE (decl) == TYPE_DECL)
{
/* Look for invalid nested type:
class C {
class C {};
}; */
if (scope == ts_current && DECL_SELF_REFERENCE_P (decl))
{
error ("%qD has the same name as the class in which it is "
"declared",
decl);
return error_mark_node;
}
/* Two cases we need to consider when deciding if a class
template is allowed as an elaborated type specifier:
1. It is a self reference to its own class.
2. It comes with a template header.
For example:
template <class T> class C {
class C *c1; // DECL_SELF_REFERENCE_P is true
class D;
};
template <class U> class C; // template_header_p is true
template <class T> class C<T>::D {
class C *c2; // DECL_SELF_REFERENCE_P is true
}; */
t = check_elaborated_type_specifier (tag_code,
decl,
template_header_p
| DECL_SELF_REFERENCE_P (decl));
return t;
}
else if (decl && TREE_CODE (decl) == TREE_LIST)
{
error ("reference to %qD is ambiguous", name);
print_candidates (decl);
return error_mark_node;
}
else
return NULL_TREE;
}
/* Get the struct, enum or union (TAG_CODE says which) with tag NAME.
Define the tag as a forward-reference if it is not defined.
If a declaration is given, process it here, and report an error if
multiple declarations are not identical.
SCOPE is TS_CURRENT when this is also a definition. Only look in
the current frame for the name (since C++ allows new names in any
scope.) It is TS_WITHIN_ENCLOSING_NON_CLASS if this is a friend
declaration. Only look beginning from the current scope outward up
till the nearest non-class scope. Otherwise it is TS_GLOBAL.
TEMPLATE_HEADER_P is true when this declaration is preceded by
a set of template parameters. */
tree
xref_tag (enum tag_types tag_code, tree name,
tag_scope scope, bool template_header_p)
{
enum tree_code code;
tree t;
tree context = NULL_TREE;
timevar_push (TV_NAME_LOOKUP);
gcc_assert (TREE_CODE (name) == IDENTIFIER_NODE);
switch (tag_code)
{
case record_type:
case class_type:
code = RECORD_TYPE;
break;
case union_type:
code = UNION_TYPE;
break;
case enum_type:
code = ENUMERAL_TYPE;
break;
default:
gcc_unreachable ();
}
/* In case of anonymous name, xref_tag is only called to
make type node and push name. Name lookup is not required. */
if (ANON_AGGRNAME_P (name))
t = NULL_TREE;
else
t = lookup_and_check_tag (tag_code, name,
scope, template_header_p);
if (t == error_mark_node)
POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
if (scope != ts_current && t && current_class_type
&& template_class_depth (current_class_type)
&& template_header_p)
{
/* Since SCOPE is not TS_CURRENT, we are not looking at a
definition of this tag. Since, in addition, we are currently
processing a (member) template declaration of a template
class, we must be very careful; consider:
template <class X>
struct S1
template <class U>
struct S2
{ template <class V>
friend struct S1; };
Here, the S2::S1 declaration should not be confused with the
outer declaration. In particular, the inner version should
have a template parameter of level 2, not level 1. This
would be particularly important if the member declaration
were instead:
template <class V = U> friend struct S1;
say, when we should tsubst into `U' when instantiating
S2. On the other hand, when presented with:
template <class T>
struct S1 {
template <class U>
struct S2 {};
template <class U>
friend struct S2;
};
we must find the inner binding eventually. We
accomplish this by making sure that the new type we
create to represent this declaration has the right
TYPE_CONTEXT. */
context = TYPE_CONTEXT (t);
t = NULL_TREE;
}
if (! t)
{
/* If no such tag is yet defined, create a forward-reference node
and record it as the "definition".
When a real declaration of this type is found,
the forward-reference will be altered into a real type. */
if (code == ENUMERAL_TYPE)
{
error ("use of enum %q#D without previous declaration", name);
POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
}
else
{
t = make_class_type (code);
TYPE_CONTEXT (t) = context;
t = pushtag (name, t, scope);
}
}
else
{
if (template_header_p && MAYBE_CLASS_TYPE_P (t))
{
if (!redeclare_class_template (t, current_template_parms))
POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
}
else if (!processing_template_decl
&& CLASS_TYPE_P (t)
&& CLASSTYPE_IS_TEMPLATE (t))
{
error ("redeclaration of %qT as a non-template", t);
error ("previous declaration %q+D", t);
POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
}
/* Make injected friend class visible. */
if (scope != ts_within_enclosing_non_class
&& hidden_name_p (TYPE_NAME (t)))
{
DECL_ANTICIPATED (TYPE_NAME (t)) = 0;
DECL_FRIEND_P (TYPE_NAME (t)) = 0;
if (TYPE_TEMPLATE_INFO (t))
{
DECL_ANTICIPATED (TYPE_TI_TEMPLATE (t)) = 0;
DECL_FRIEND_P (TYPE_TI_TEMPLATE (t)) = 0;
}
}
}
POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, t);
}
tree
xref_tag_from_type (tree old, tree id, tag_scope scope)
{
enum tag_types tag_kind;
if (TREE_CODE (old) == RECORD_TYPE)
tag_kind = (CLASSTYPE_DECLARED_CLASS (old) ? class_type : record_type);
else
tag_kind = union_type;
if (id == NULL_TREE)
id = TYPE_IDENTIFIER (old);
return xref_tag (tag_kind, id, scope, false);
}
/* Create the binfo hierarchy for REF with (possibly NULL) base list
BASE_LIST. For each element on BASE_LIST the TREE_PURPOSE is an
access_* node, and the TREE_VALUE is the type of the base-class.
Non-NULL TREE_TYPE indicates virtual inheritance.
Returns true if the binfo hierarchy was successfully created,
false if an error was detected. */
bool
xref_basetypes (tree ref, tree base_list)
{
tree *basep;
tree binfo, base_binfo;
unsigned max_vbases = 0; /* Maximum direct & indirect virtual bases. */
unsigned max_bases = 0; /* Maximum direct bases. */
int i;
tree default_access;
tree igo_prev; /* Track Inheritance Graph Order. */
if (ref == error_mark_node)
return false;
/* The base of a derived class is private by default, all others are
public. */
default_access = (TREE_CODE (ref) == RECORD_TYPE
&& CLASSTYPE_DECLARED_CLASS (ref)
? access_private_node : access_public_node);
/* First, make sure that any templates in base-classes are
instantiated. This ensures that if we call ourselves recursively
we do not get confused about which classes are marked and which
are not. */
basep = &base_list;
while (*basep)
{
tree basetype = TREE_VALUE (*basep);
if (!(processing_template_decl && uses_template_parms (basetype))
&& !complete_type_or_else (basetype, NULL))
/* An incomplete type. Remove it from the list. */
*basep = TREE_CHAIN (*basep);
else
{
max_bases++;
if (TREE_TYPE (*basep))
max_vbases++;
if (CLASS_TYPE_P (basetype))
max_vbases += VEC_length (tree, CLASSTYPE_VBASECLASSES (basetype));
basep = &TREE_CHAIN (*basep);
}
}
TYPE_MARKED_P (ref) = 1;
/* The binfo slot should be empty, unless this is an (ill-formed)
redefinition. */
if (TYPE_BINFO (ref) && !TYPE_SIZE (ref))
{
error ("redefinition of %q#T", ref);
return false;
}
gcc_assert (TYPE_MAIN_VARIANT (ref) == ref);
binfo = make_tree_binfo (max_bases);
TYPE_BINFO (ref) = binfo;
BINFO_OFFSET (binfo) = size_zero_node;
BINFO_TYPE (binfo) = ref;
/* Apply base-class info set up to the variants of this type. */
fixup_type_variants (ref);
if (max_bases)
{
BINFO_BASE_ACCESSES (binfo) = VEC_alloc (tree, gc, max_bases);
/* An aggregate cannot have baseclasses. */
CLASSTYPE_NON_AGGREGATE (ref) = 1;
if (TREE_CODE (ref) == UNION_TYPE)
{
error ("derived union %qT invalid", ref);
return false;
}
}
if (max_bases > 1)
{
if (TYPE_FOR_JAVA (ref))
{
error ("Java class %qT cannot have multiple bases", ref);
return false;
}
}
if (max_vbases)
{
CLASSTYPE_VBASECLASSES (ref) = VEC_alloc (tree, gc, max_vbases);
if (TYPE_FOR_JAVA (ref))
{
error ("Java class %qT cannot have virtual bases", ref);
return false;
}
}
for (igo_prev = binfo; base_list; base_list = TREE_CHAIN (base_list))
{
tree access = TREE_PURPOSE (base_list);
int via_virtual = TREE_TYPE (base_list) != NULL_TREE;
tree basetype = TREE_VALUE (base_list);
if (access == access_default_node)
access = default_access;
if (PACK_EXPANSION_P (basetype))
basetype = PACK_EXPANSION_PATTERN (basetype);
if (TREE_CODE (basetype) == TYPE_DECL)
basetype = TREE_TYPE (basetype);
if (!MAYBE_CLASS_TYPE_P (basetype) || TREE_CODE (basetype) == UNION_TYPE)
{
error ("base type %qT fails to be a struct or class type",
basetype);
return false;
}
if (TYPE_FOR_JAVA (basetype) && (current_lang_depth () == 0))
TYPE_FOR_JAVA (ref) = 1;
base_binfo = NULL_TREE;
if (CLASS_TYPE_P (basetype) && !dependent_type_p (basetype))
{
base_binfo = TYPE_BINFO (basetype);
/* The original basetype could have been a typedef'd type. */
basetype = BINFO_TYPE (base_binfo);
/* Inherit flags from the base. */
TYPE_HAS_NEW_OPERATOR (ref)
|= TYPE_HAS_NEW_OPERATOR (basetype);
TYPE_HAS_ARRAY_NEW_OPERATOR (ref)
|= TYPE_HAS_ARRAY_NEW_OPERATOR (basetype);
TYPE_GETS_DELETE (ref) |= TYPE_GETS_DELETE (basetype);
TYPE_HAS_CONVERSION (ref) |= TYPE_HAS_CONVERSION (basetype);
CLASSTYPE_DIAMOND_SHAPED_P (ref)
|= CLASSTYPE_DIAMOND_SHAPED_P (basetype);
CLASSTYPE_REPEATED_BASE_P (ref)
|= CLASSTYPE_REPEATED_BASE_P (basetype);
}
/* We must do this test after we've seen through a typedef
type. */
if (TYPE_MARKED_P (basetype))
{
if (basetype == ref)
error ("recursive type %qT undefined", basetype);
else
error ("duplicate base type %qT invalid", basetype);
return false;
}
if (PACK_EXPANSION_P (TREE_VALUE (base_list)))
/* Regenerate the pack expansion for the bases. */
basetype = make_pack_expansion (basetype);
TYPE_MARKED_P (basetype) = 1;
base_binfo = copy_binfo (base_binfo, basetype, ref,
&igo_prev, via_virtual);
if (!BINFO_INHERITANCE_CHAIN (base_binfo))
BINFO_INHERITANCE_CHAIN (base_binfo) = binfo;
BINFO_BASE_APPEND (binfo, base_binfo);
BINFO_BASE_ACCESS_APPEND (binfo, access);
}
if (VEC_space (tree, CLASSTYPE_VBASECLASSES (ref), 1))
/* If we have space in the vbase vector, we must have shared at
least one of them, and are therefore diamond shaped. */
CLASSTYPE_DIAMOND_SHAPED_P (ref) = 1;
/* Unmark all the types. */
for (i = 0; BINFO_BASE_ITERATE (binfo, i, base_binfo); i++)
TYPE_MARKED_P (BINFO_TYPE (base_binfo)) = 0;
TYPE_MARKED_P (ref) = 0;
/* Now see if we have a repeated base type. */
if (!CLASSTYPE_REPEATED_BASE_P (ref))
{
for (base_binfo = binfo; base_binfo;
base_binfo = TREE_CHAIN (base_binfo))
{
if (TYPE_MARKED_P (BINFO_TYPE (base_binfo)))
{
CLASSTYPE_REPEATED_BASE_P (ref) = 1;
break;
}
TYPE_MARKED_P (BINFO_TYPE (base_binfo)) = 1;
}
for (base_binfo = binfo; base_binfo;
base_binfo = TREE_CHAIN (base_binfo))
if (TYPE_MARKED_P (BINFO_TYPE (base_binfo)))
TYPE_MARKED_P (BINFO_TYPE (base_binfo)) = 0;
else
break;
}
return true;
}
/* Copies the enum-related properties from type SRC to type DST.
Used with the underlying type of an enum and the enum itself. */
static void
copy_type_enum (tree dst, tree src)
{
TYPE_MIN_VALUE (dst) = TYPE_MIN_VALUE (src);
TYPE_MAX_VALUE (dst) = TYPE_MAX_VALUE (src);
TYPE_SIZE (dst) = TYPE_SIZE (src);
TYPE_SIZE_UNIT (dst) = TYPE_SIZE_UNIT (src);
SET_TYPE_MODE (dst, TYPE_MODE (src));
TYPE_PRECISION (dst) = TYPE_PRECISION (src);
TYPE_ALIGN (dst) = TYPE_ALIGN (src);
TYPE_USER_ALIGN (dst) = TYPE_USER_ALIGN (src);
TYPE_UNSIGNED (dst) = TYPE_UNSIGNED (src);
}
/* Begin compiling the definition of an enumeration type.
NAME is its name,
if ENUMTYPE is not NULL_TREE then the type has alredy been found.
UNDERLYING_TYPE is the type that will be used as the storage for
the enumeration type. This should be NULL_TREE if no storage type
was specified.
SCOPED_ENUM_P is true if this is a scoped enumeration type.
if IS_NEW is not NULL, gets TRUE iff a new type is created.
Returns the type object, as yet incomplete.
Also records info about it so that build_enumerator
may be used to declare the individual values as they are read. */
tree
start_enum (tree name, tree enumtype, tree underlying_type,
bool scoped_enum_p, bool *is_new)
{
tree prevtype = NULL_TREE;
gcc_assert (TREE_CODE (name) == IDENTIFIER_NODE);
if (is_new)
*is_new = false;
/* [C++0x dcl.enum]p5:
If not explicitly specified, the underlying type of a scoped
enumeration type is int. */
if (!underlying_type && scoped_enum_p)
underlying_type = integer_type_node;
if (underlying_type)
underlying_type = cv_unqualified (underlying_type);
/* If this is the real definition for a previous forward reference,
fill in the contents in the same object that used to be the
forward reference. */
if (!enumtype)
enumtype = lookup_and_check_tag (enum_type, name,
/*tag_scope=*/ts_current,
/*template_header_p=*/false);
/* In case of a template_decl, the only check that should be deferred
to instantiation time is the comparison of underlying types. */
if (enumtype && TREE_CODE (enumtype) == ENUMERAL_TYPE)
{
if (scoped_enum_p != SCOPED_ENUM_P (enumtype))
{
error_at (input_location, "scoped/unscoped mismatch "
"in enum %q#T", enumtype);
error_at (DECL_SOURCE_LOCATION (TYPE_MAIN_DECL (enumtype)),
"previous definition here");
enumtype = error_mark_node;
}
else if (ENUM_FIXED_UNDERLYING_TYPE_P (enumtype) != !! underlying_type)
{
error_at (input_location, "underlying type mismatch "
"in enum %q#T", enumtype);
error_at (DECL_SOURCE_LOCATION (TYPE_MAIN_DECL (enumtype)),
"previous definition here");
enumtype = error_mark_node;
}
else if (underlying_type && ENUM_UNDERLYING_TYPE (enumtype)
&& !dependent_type_p (underlying_type)
&& !dependent_type_p (ENUM_UNDERLYING_TYPE (enumtype))
&& !same_type_p (underlying_type,
ENUM_UNDERLYING_TYPE (enumtype)))
{
error_at (input_location, "different underlying type "
"in enum %q#T", enumtype);
error_at (DECL_SOURCE_LOCATION (TYPE_MAIN_DECL (enumtype)),
"previous definition here");
underlying_type = NULL_TREE;
}
}
if (!enumtype || TREE_CODE (enumtype) != ENUMERAL_TYPE
|| processing_template_decl)
{
/* In case of error, make a dummy enum to allow parsing to
continue. */
if (enumtype == error_mark_node)
{
name = make_anon_name ();
enumtype = NULL_TREE;
}
/* enumtype may be an ENUMERAL_TYPE if this is a redefinition
of an opaque enum, or an opaque enum of an already defined
enumeration (C++0x only).
In any other case, it'll be NULL_TREE. */
if (!enumtype)
{
if (is_new)
*is_new = true;
}
prevtype = enumtype;
enumtype = cxx_make_type (ENUMERAL_TYPE);
enumtype = pushtag (name, enumtype, /*tag_scope=*/ts_current);
if (enumtype == error_mark_node)
return error_mark_node;
/* The enum is considered opaque until the opening '{' of the
enumerator list. */
SET_OPAQUE_ENUM_P (enumtype, true);
ENUM_FIXED_UNDERLYING_TYPE_P (enumtype) = !! underlying_type;
}
SET_SCOPED_ENUM_P (enumtype, scoped_enum_p);
if (underlying_type)
{
if (CP_INTEGRAL_TYPE_P (underlying_type))
{
copy_type_enum (enumtype, underlying_type);
ENUM_UNDERLYING_TYPE (enumtype) = underlying_type;
}
else if (dependent_type_p (underlying_type))
ENUM_UNDERLYING_TYPE (enumtype) = underlying_type;
else
error ("underlying type %<%T%> of %<%T%> must be an integral type",
underlying_type, enumtype);
}
/* If into a template class, the returned enum is always the first
declaration (opaque or not) seen. This way all the references to
this type will be to the same declaration. The following ones are used
only to check for definition errors. */
if (prevtype && processing_template_decl)
return prevtype;
else
return enumtype;
}
/* After processing and defining all the values of an enumeration type,
install their decls in the enumeration type.
ENUMTYPE is the type object. */
void
finish_enum_value_list (tree enumtype)
{
tree values;
tree underlying_type;
tree decl;
tree value;
tree minnode, maxnode;
tree t;
bool fixed_underlying_type_p
= ENUM_UNDERLYING_TYPE (enumtype) != NULL_TREE;
/* We built up the VALUES in reverse order. */
TYPE_VALUES (enumtype) = nreverse (TYPE_VALUES (enumtype));
/* For an enum defined in a template, just set the type of the values;
all further processing is postponed until the template is
instantiated. We need to set the type so that tsubst of a CONST_DECL
works. */
if (processing_template_decl)
{
for (values = TYPE_VALUES (enumtype);
values;
values = TREE_CHAIN (values))
TREE_TYPE (TREE_VALUE (values)) = enumtype;
return;
}
/* Determine the minimum and maximum values of the enumerators. */
if (TYPE_VALUES (enumtype))
{
minnode = maxnode = NULL_TREE;
for (values = TYPE_VALUES (enumtype);
values;
values = TREE_CHAIN (values))
{
decl = TREE_VALUE (values);
/* [dcl.enum]: Following the closing brace of an enum-specifier,
each enumerator has the type of its enumeration. Prior to the
closing brace, the type of each enumerator is the type of its
initializing value. */
TREE_TYPE (decl) = enumtype;
/* Update the minimum and maximum values, if appropriate. */
value = DECL_INITIAL (decl);
if (value == error_mark_node)
value = integer_zero_node;
/* Figure out what the minimum and maximum values of the
enumerators are. */
if (!minnode)
minnode = maxnode = value;
else if (tree_int_cst_lt (maxnode, value))
maxnode = value;
else if (tree_int_cst_lt (value, minnode))
minnode = value;
}
}
else
/* [dcl.enum]
If the enumerator-list is empty, the underlying type is as if
the enumeration had a single enumerator with value 0. */
minnode = maxnode = integer_zero_node;
if (!fixed_underlying_type_p)
{
/* Compute the number of bits require to represent all values of the
enumeration. We must do this before the type of MINNODE and
MAXNODE are transformed, since tree_int_cst_min_precision relies
on the TREE_TYPE of the value it is passed. */
bool unsignedp = tree_int_cst_sgn (minnode) >= 0;
int lowprec = tree_int_cst_min_precision (minnode, unsignedp);
int highprec = tree_int_cst_min_precision (maxnode, unsignedp);
int precision = MAX (lowprec, highprec);
unsigned int itk;
bool use_short_enum;
/* Determine the underlying type of the enumeration.
[dcl.enum]
The underlying type of an enumeration is an integral type that
can represent all the enumerator values defined in the
enumeration. It is implementation-defined which integral type is
used as the underlying type for an enumeration except that the
underlying type shall not be larger than int unless the value of
an enumerator cannot fit in an int or unsigned int.
We use "int" or an "unsigned int" as the underlying type, even if
a smaller integral type would work, unless the user has
explicitly requested that we use the smallest possible type. The
user can request that for all enumerations with a command line
flag, or for just one enumeration with an attribute. */
use_short_enum = flag_short_enums
|| lookup_attribute ("packed", TYPE_ATTRIBUTES (enumtype));
for (itk = (use_short_enum ? itk_char : itk_int);
itk != itk_none;
itk++)
{
underlying_type = integer_types[itk];
if (underlying_type != NULL_TREE
&& TYPE_PRECISION (underlying_type) >= precision
&& TYPE_UNSIGNED (underlying_type) == unsignedp)
break;
}
if (itk == itk_none)
{
/* DR 377
IF no integral type can represent all the enumerator values, the
enumeration is ill-formed. */
error ("no integral type can represent all of the enumerator values "
"for %qT", enumtype);
precision = TYPE_PRECISION (long_long_integer_type_node);
underlying_type = integer_types[itk_unsigned_long_long];
}
/* [dcl.enum]
The value of sizeof() applied to an enumeration type, an object
of an enumeration type, or an enumerator, is the value of sizeof()
applied to the underlying type. */
copy_type_enum (enumtype, underlying_type);
/* Compute the minimum and maximum values for the type.
[dcl.enum]
For an enumeration where emin is the smallest enumerator and emax
is the largest, the values of the enumeration are the values of the
underlying type in the range bmin to bmax, where bmin and bmax are,
respectively, the smallest and largest values of the smallest bit-
field that can store emin and emax. */
/* The middle-end currently assumes that types with TYPE_PRECISION
narrower than their underlying type are suitably zero or sign
extended to fill their mode. Similarly, it assumes that the front
end assures that a value of a particular type must be within
TYPE_MIN_VALUE and TYPE_MAX_VALUE.
We used to set these fields based on bmin and bmax, but that led
to invalid assumptions like optimizing away bounds checking. So
now we just set the TYPE_PRECISION, TYPE_MIN_VALUE, and
TYPE_MAX_VALUE to the values for the mode above and only restrict
the ENUM_UNDERLYING_TYPE for the benefit of diagnostics. */
ENUM_UNDERLYING_TYPE (enumtype)
= build_distinct_type_copy (underlying_type);
TYPE_PRECISION (ENUM_UNDERLYING_TYPE (enumtype)) = precision;
set_min_and_max_values_for_integral_type
(ENUM_UNDERLYING_TYPE (enumtype), precision, unsignedp);
/* If -fstrict-enums, still constrain TYPE_MIN/MAX_VALUE. */
if (flag_strict_enums)
set_min_and_max_values_for_integral_type (enumtype, precision,
unsignedp);
}
else
underlying_type = ENUM_UNDERLYING_TYPE (enumtype);
/* Convert each of the enumerators to the type of the underlying
type of the enumeration. */
for (values = TYPE_VALUES (enumtype); values; values = TREE_CHAIN (values))
{
location_t saved_location;
decl = TREE_VALUE (values);
saved_location = input_location;
input_location = DECL_SOURCE_LOCATION (decl);
if (fixed_underlying_type_p)
/* If the enumeration type has a fixed underlying type, we
already checked all of the enumerator values. */
value = DECL_INITIAL (decl);
else
value = perform_implicit_conversion (underlying_type,
DECL_INITIAL (decl),
tf_warning_or_error);
input_location = saved_location;
/* Do not clobber shared ints. */
value = copy_node (value);
TREE_TYPE (value) = enumtype;
DECL_INITIAL (decl) = value;
}
/* Fix up all variant types of this enum type. */
for (t = TYPE_MAIN_VARIANT (enumtype); t; t = TYPE_NEXT_VARIANT (t))
TYPE_VALUES (t) = TYPE_VALUES (enumtype);
/* Finish debugging output for this type. */
rest_of_type_compilation (enumtype, namespace_bindings_p ());
}
/* Finishes the enum type. This is called only the first time an
enumeration is seen, be it opaque or odinary.
ENUMTYPE is the type object. */
void
finish_enum (tree enumtype)
{
if (processing_template_decl)
{
if (at_function_scope_p ())
add_stmt (build_min (TAG_DEFN, enumtype));
return;
}
/* Here there should not be any variants of this type. */
gcc_assert (enumtype == TYPE_MAIN_VARIANT (enumtype)
&& !TYPE_NEXT_VARIANT (enumtype));
}
/* Build and install a CONST_DECL for an enumeration constant of the
enumeration type ENUMTYPE whose NAME and VALUE (if any) are provided.
LOC is the location of NAME.
Assignment of sequential values by default is handled here. */
void
build_enumerator (tree name, tree value, tree enumtype, location_t loc)
{
tree decl;
tree context;
tree type;
/* If the VALUE was erroneous, pretend it wasn't there; that will
result in the enum being assigned the next value in sequence. */
if (value == error_mark_node)
value = NULL_TREE;
/* Remove no-op casts from the value. */
if (value)
STRIP_TYPE_NOPS (value);
if (! processing_template_decl)
{
/* Validate and default VALUE. */
if (value != NULL_TREE)
{
value = cxx_constant_value (value);
if (TREE_CODE (value) == INTEGER_CST
&& INTEGRAL_OR_ENUMERATION_TYPE_P (TREE_TYPE (value)))
{
value = perform_integral_promotions (value);
}
else
{
error ("enumerator value for %qD is not an integer constant", name);
value = NULL_TREE;
}
}
/* Default based on previous value. */
if (value == NULL_TREE)
{
if (TYPE_VALUES (enumtype))
{
HOST_WIDE_INT hi;
unsigned HOST_WIDE_INT lo;
tree prev_value;
bool overflowed;
/* The next value is the previous value plus one.
add_double doesn't know the type of the target expression,
so we must check with int_fits_type_p as well. */
prev_value = DECL_INITIAL (TREE_VALUE (TYPE_VALUES (enumtype)));
if (error_operand_p (prev_value))
value = error_mark_node;
else
{
overflowed = add_double (TREE_INT_CST_LOW (prev_value),
TREE_INT_CST_HIGH (prev_value),
1, 0, &lo, &hi);
value = build_int_cst_wide (TREE_TYPE (prev_value), lo, hi);
overflowed
|= !int_fits_type_p (value, TREE_TYPE (prev_value));
if (overflowed)
{
error ("overflow in enumeration values at %qD", name);
value = error_mark_node;
}
}
}
else
value = integer_zero_node;
}
/* Remove no-op casts from the value. */
STRIP_TYPE_NOPS (value);
/* If the underlying type of the enum is fixed, check whether
the enumerator values fits in the underlying type. If it
does not fit, the program is ill-formed [C++0x dcl.enum]. */
if (ENUM_UNDERLYING_TYPE (enumtype)
&& value
&& TREE_CODE (value) == INTEGER_CST
&& !int_fits_type_p (value, ENUM_UNDERLYING_TYPE (enumtype)))
{
error ("enumerator value %E is too large for underlying type %<%T%>",
value, ENUM_UNDERLYING_TYPE (enumtype));
/* Silently convert the value so that we can continue. */
value = perform_implicit_conversion (ENUM_UNDERLYING_TYPE (enumtype),
value, tf_none);
}
}
/* C++ associates enums with global, function, or class declarations. */
context = current_scope ();
/* Build the actual enumeration constant. Note that the enumeration
constants have the underlying type of the enum (if it is fixed)
or the type of their initializer (if the underlying type of the
enum is not fixed):
[ C++0x dcl.enum ]
If the underlying type is fixed, the type of each enumerator
prior to the closing brace is the underlying type; if the
initializing value of an enumerator cannot be represented by
the underlying type, the program is ill-formed. If the
underlying type is not fixed, the type of each enumerator is
the type of its initializing value.
If the underlying type is not fixed, it will be computed by
finish_enum and we will reset the type of this enumerator. Of
course, if we're processing a template, there may be no value. */
type = value ? TREE_TYPE (value) : NULL_TREE;
if (context && context == current_class_type)
/* This enum declaration is local to the class. We need the full
lang_decl so that we can record DECL_CLASS_CONTEXT, for example. */
decl = build_lang_decl_loc (loc, CONST_DECL, name, type);
else
/* It's a global enum, or it's local to a function. (Note local to
a function could mean local to a class method. */
decl = build_decl (loc, CONST_DECL, name, type);
DECL_CONTEXT (decl) = FROB_CONTEXT (context);
TREE_CONSTANT (decl) = 1;
TREE_READONLY (decl) = 1;
DECL_INITIAL (decl) = value;
if (context && context == current_class_type && !SCOPED_ENUM_P (enumtype))
/* In something like `struct S { enum E { i = 7 }; };' we put `i'
on the TYPE_FIELDS list for `S'. (That's so that you can say
things like `S::i' later.) */
finish_member_declaration (decl);
else
pushdecl (decl);
/* Add this enumeration constant to the list for this type. */
TYPE_VALUES (enumtype) = tree_cons (name, decl, TYPE_VALUES (enumtype));
}
/* Look for an enumerator with the given NAME within the enumeration
type ENUMTYPE. This routine is used primarily for qualified name
lookup into an enumerator in C++0x, e.g.,
enum class Color { Red, Green, Blue };
Color color = Color::Red;
Returns the value corresponding to the enumerator, or
NULL_TREE if no such enumerator was found. */
tree
lookup_enumerator (tree enumtype, tree name)
{
tree e;
gcc_assert (enumtype && TREE_CODE (enumtype) == ENUMERAL_TYPE);
e = purpose_member (name, TYPE_VALUES (enumtype));
return e? TREE_VALUE (e) : NULL_TREE;
}
/* We're defining DECL. Make sure that its type is OK. */
static void
check_function_type (tree decl, tree current_function_parms)
{
tree fntype = TREE_TYPE (decl);
tree return_type = complete_type (TREE_TYPE (fntype));
/* In a function definition, arg types must be complete. */
require_complete_types_for_parms (current_function_parms);
if (dependent_type_p (return_type))
return;
if (!COMPLETE_OR_VOID_TYPE_P (return_type)
|| (TYPE_FOR_JAVA (return_type) && MAYBE_CLASS_TYPE_P (return_type)))
{
tree args = TYPE_ARG_TYPES (fntype);
if (!COMPLETE_OR_VOID_TYPE_P (return_type))
error ("return type %q#T is incomplete", return_type);
else
error ("return type has Java class type %q#T", return_type);
/* Make it return void instead. */
if (TREE_CODE (fntype) == METHOD_TYPE)
fntype = build_method_type_directly (TREE_TYPE (TREE_VALUE (args)),
void_type_node,
TREE_CHAIN (args));
else
fntype = build_function_type (void_type_node, args);
fntype
= build_exception_variant (fntype,
TYPE_RAISES_EXCEPTIONS (TREE_TYPE (decl)));
fntype = (cp_build_type_attribute_variant
(fntype, TYPE_ATTRIBUTES (TREE_TYPE (decl))));
TREE_TYPE (decl) = fntype;
}
else
abstract_virtuals_error (decl, TREE_TYPE (fntype));
}
/* Create the FUNCTION_DECL for a function definition.
DECLSPECS and DECLARATOR are the parts of the declaration;
they describe the function's name and the type it returns,
but twisted together in a fashion that parallels the syntax of C.
FLAGS is a bitwise or of SF_PRE_PARSED (indicating that the
DECLARATOR is really the DECL for the function we are about to
process and that DECLSPECS should be ignored), SF_INCLASS_INLINE
indicating that the function is an inline defined in-class.
This function creates a binding context for the function body
as well as setting up the FUNCTION_DECL in current_function_decl.
For C++, we must first check whether that datum makes any sense.
For example, "class A local_a(1,2);" means that variable local_a
is an aggregate of type A, which should have a constructor
applied to it with the argument list [1, 2].
On entry, DECL_INITIAL (decl1) should be NULL_TREE or error_mark_node,
or may be a BLOCK if the function has been defined previously
in this translation unit. On exit, DECL_INITIAL (decl1) will be
error_mark_node if the function has never been defined, or
a BLOCK if the function has been defined somewhere. */
void
start_preparsed_function (tree decl1, tree attrs, int flags)
{
tree ctype = NULL_TREE;
tree fntype;
tree restype;
int doing_friend = 0;
struct cp_binding_level *bl;
tree current_function_parms;
struct c_fileinfo *finfo
= get_fileinfo (LOCATION_FILE (DECL_SOURCE_LOCATION (decl1)));
bool honor_interface;
/* Sanity check. */
gcc_assert (TREE_CODE (TREE_VALUE (void_list_node)) == VOID_TYPE);
gcc_assert (TREE_CHAIN (void_list_node) == NULL_TREE);
fntype = TREE_TYPE (decl1);
if (TREE_CODE (fntype) == METHOD_TYPE)
ctype = TYPE_METHOD_BASETYPE (fntype);
/* ISO C++ 11.4/5. A friend function defined in a class is in
the (lexical) scope of the class in which it is defined. */
if (!ctype && DECL_FRIEND_P (decl1))
{
ctype = DECL_FRIEND_CONTEXT (decl1);
/* CTYPE could be null here if we're dealing with a template;
for example, `inline friend float foo()' inside a template
will have no CTYPE set. */
if (ctype && TREE_CODE (ctype) != RECORD_TYPE)
ctype = NULL_TREE;
else
doing_friend = 1;
}
if (DECL_DECLARED_INLINE_P (decl1)
&& lookup_attribute ("noinline", attrs))
warning (0, "inline function %q+D given attribute noinline", decl1);
/* Handle gnu_inline attribute. */
if (GNU_INLINE_P (decl1))
{
DECL_EXTERNAL (decl1) = 1;
DECL_NOT_REALLY_EXTERN (decl1) = 0;
DECL_INTERFACE_KNOWN (decl1) = 1;
DECL_DISREGARD_INLINE_LIMITS (decl1) = 1;
}
if (DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (decl1))
/* This is a constructor, we must ensure that any default args
introduced by this definition are propagated to the clones
now. The clones are used directly in overload resolution. */
adjust_clone_args (decl1);
/* Sometimes we don't notice that a function is a static member, and
build a METHOD_TYPE for it. Fix that up now. */
if (ctype != NULL_TREE && DECL_STATIC_FUNCTION_P (decl1)
&& TREE_CODE (TREE_TYPE (decl1)) == METHOD_TYPE)
{
revert_static_member_fn (decl1);
ctype = NULL_TREE;
}
/* Set up current_class_type, and enter the scope of the class, if
appropriate. */
if (ctype)
push_nested_class (ctype);
else if (DECL_STATIC_FUNCTION_P (decl1))
push_nested_class (DECL_CONTEXT (decl1));
/* Now that we have entered the scope of the class, we must restore
the bindings for any template parameters surrounding DECL1, if it
is an inline member template. (Order is important; consider the
case where a template parameter has the same name as a field of
the class.) It is not until after this point that
PROCESSING_TEMPLATE_DECL is guaranteed to be set up correctly. */
if (flags & SF_INCLASS_INLINE)
maybe_begin_member_template_processing (decl1);
/* Effective C++ rule 15. */
if (warn_ecpp
&& DECL_OVERLOADED_OPERATOR_P (decl1) == NOP_EXPR
&& TREE_CODE (TREE_TYPE (fntype)) == VOID_TYPE)
warning (OPT_Weffc__, "%<operator=%> should return a reference to %<*this%>");
/* Make the init_value nonzero so pushdecl knows this is not tentative.
error_mark_node is replaced below (in poplevel) with the BLOCK. */
if (!DECL_INITIAL (decl1))
DECL_INITIAL (decl1) = error_mark_node;
/* This function exists in static storage.
(This does not mean `static' in the C sense!) */
TREE_STATIC (decl1) = 1;
/* We must call push_template_decl after current_class_type is set
up. (If we are processing inline definitions after exiting a
class scope, current_class_type will be NULL_TREE until set above
by push_nested_class.) */
if (processing_template_decl)
{
/* FIXME: Handle error_mark_node more gracefully. */
tree newdecl1 = push_template_decl (decl1);
if (newdecl1 != error_mark_node)
decl1 = newdecl1;
}
/* We are now in the scope of the function being defined. */
current_function_decl = decl1;
/* Save the parm names or decls from this function's declarator
where store_parm_decls will find them. */
current_function_parms = DECL_ARGUMENTS (decl1);
/* Make sure the parameter and return types are reasonable. When
you declare a function, these types can be incomplete, but they
must be complete when you define the function. */
check_function_type (decl1, current_function_parms);
/* Build the return declaration for the function. */
restype = TREE_TYPE (fntype);
if (DECL_RESULT (decl1) == NULL_TREE)
{
tree resdecl;
resdecl = build_decl (input_location, RESULT_DECL, 0, restype);
DECL_ARTIFICIAL (resdecl) = 1;
DECL_IGNORED_P (resdecl) = 1;
DECL_RESULT (decl1) = resdecl;
cp_apply_type_quals_to_decl (cp_type_quals (restype), resdecl);
}
/* Let the user know we're compiling this function. */
announce_function (decl1);
/* Record the decl so that the function name is defined.
If we already have a decl for this name, and it is a FUNCTION_DECL,
use the old decl. */
if (!processing_template_decl && !(flags & SF_PRE_PARSED))
{
/* A specialization is not used to guide overload resolution. */
if (!DECL_FUNCTION_MEMBER_P (decl1)
&& !(DECL_USE_TEMPLATE (decl1) &&
PRIMARY_TEMPLATE_P (DECL_TI_TEMPLATE (decl1))))
{
tree olddecl = pushdecl (decl1);
if (olddecl == error_mark_node)
/* If something went wrong when registering the declaration,
use DECL1; we have to have a FUNCTION_DECL to use when
parsing the body of the function. */
;
else
{
/* Otherwise, OLDDECL is either a previous declaration
of the same function or DECL1 itself. */
if (warn_missing_declarations
&& olddecl == decl1
&& !DECL_MAIN_P (decl1)
&& TREE_PUBLIC (decl1)
&& !DECL_DECLARED_INLINE_P (decl1))
{
tree context;
/* Check whether DECL1 is in an anonymous
namespace. */
for (context = DECL_CONTEXT (decl1);
context;
context = DECL_CONTEXT (context))
{
if (TREE_CODE (context) == NAMESPACE_DECL
&& DECL_NAME (context) == NULL_TREE)
break;
}
if (context == NULL)
warning (OPT_Wmissing_declarations,
"no previous declaration for %q+D", decl1);
}
decl1 = olddecl;
}
}
else
{
/* We need to set the DECL_CONTEXT. */
if (!DECL_CONTEXT (decl1) && DECL_TEMPLATE_INFO (decl1))
DECL_CONTEXT (decl1) = DECL_CONTEXT (DECL_TI_TEMPLATE (decl1));
}
fntype = TREE_TYPE (decl1);
/* If #pragma weak applies, mark the decl appropriately now.
The pragma only applies to global functions. Because
determining whether or not the #pragma applies involves
computing the mangled name for the declaration, we cannot
apply the pragma until after we have merged this declaration
with any previous declarations; if the original declaration
has a linkage specification, that specification applies to
the definition as well, and may affect the mangled name. */
if (DECL_FILE_SCOPE_P (decl1))
maybe_apply_pragma_weak (decl1);
}
/* constexpr functions must have literal argument types and
literal return type. */
validate_constexpr_fundecl (decl1);
/* Reset this in case the call to pushdecl changed it. */
current_function_decl = decl1;
gcc_assert (DECL_INITIAL (decl1));
/* This function may already have been parsed, in which case just
return; our caller will skip over the body without parsing. */
if (DECL_INITIAL (decl1) != error_mark_node)
return;
/* Initialize RTL machinery. We cannot do this until
CURRENT_FUNCTION_DECL and DECL_RESULT are set up. We do this
even when processing a template; this is how we get
CFUN set up, and our per-function variables initialized.
FIXME factor out the non-RTL stuff. */
bl = current_binding_level;
allocate_struct_function (decl1, processing_template_decl);
/* Initialize the language data structures. Whenever we start
a new function, we destroy temporaries in the usual way. */
cfun->language = ggc_alloc_cleared_language_function ();
current_stmt_tree ()->stmts_are_full_exprs_p = 1;
current_binding_level = bl;
/* Even though we're inside a function body, we still don't want to
call expand_expr to calculate the size of a variable-sized array.
We haven't necessarily assigned RTL to all variables yet, so it's
not safe to try to expand expressions involving them. */
cfun->dont_save_pending_sizes_p = 1;
/* Start the statement-tree, start the tree now. */
DECL_SAVED_TREE (decl1) = push_stmt_list ();
/* If we are (erroneously) defining a function that we have already
defined before, wipe out what we knew before. */
if (!DECL_PENDING_INLINE_P (decl1))
DECL_SAVED_FUNCTION_DATA (decl1) = NULL;
if (ctype && !doing_friend && !DECL_STATIC_FUNCTION_P (decl1))
{
/* We know that this was set up by `grokclassfn'. We do not
wait until `store_parm_decls', since evil parse errors may
never get us to that point. Here we keep the consistency
between `current_class_type' and `current_class_ptr'. */
tree t = DECL_ARGUMENTS (decl1);
gcc_assert (t != NULL_TREE && TREE_CODE (t) == PARM_DECL);
gcc_assert (TREE_CODE (TREE_TYPE (t)) == POINTER_TYPE);
cp_function_chain->x_current_class_ref
= cp_build_indirect_ref (t, RO_NULL, tf_warning_or_error);
cp_function_chain->x_current_class_ptr = t;
/* Constructors and destructors need to know whether they're "in
charge" of initializing virtual base classes. */
t = DECL_CHAIN (t);
if (DECL_HAS_IN_CHARGE_PARM_P (decl1))
{
current_in_charge_parm = t;
t = DECL_CHAIN (t);
}
if (DECL_HAS_VTT_PARM_P (decl1))
{
gcc_assert (DECL_NAME (t) == vtt_parm_identifier);
current_vtt_parm = t;
}
}
honor_interface = (!DECL_TEMPLATE_INSTANTIATION (decl1)
/* Implicitly-defined methods (like the
destructor for a class in which no destructor
is explicitly declared) must not be defined
until their definition is needed. So, we
ignore interface specifications for
compiler-generated functions. */
&& !DECL_ARTIFICIAL (decl1));
if (DECL_INTERFACE_KNOWN (decl1))
{
tree ctx = decl_function_context (decl1);
if (DECL_NOT_REALLY_EXTERN (decl1))
DECL_EXTERNAL (decl1) = 0;
if (ctx != NULL_TREE && DECL_DECLARED_INLINE_P (ctx)
&& TREE_PUBLIC (ctx))
/* This is a function in a local class in an extern inline
function. */
comdat_linkage (decl1);
}
/* If this function belongs to an interface, it is public.
If it belongs to someone else's interface, it is also external.
This only affects inlines and template instantiations. */
else if (!finfo->interface_unknown && honor_interface)
{
if (DECL_DECLARED_INLINE_P (decl1)
|| DECL_TEMPLATE_INSTANTIATION (decl1)
|| processing_template_decl)
{
DECL_EXTERNAL (decl1)
= (finfo->interface_only
|| (DECL_DECLARED_INLINE_P (decl1)
&& ! flag_implement_inlines
&& !DECL_VINDEX (decl1)));
/* For WIN32 we also want to put these in linkonce sections. */
maybe_make_one_only (decl1);
}
else
DECL_EXTERNAL (decl1) = 0;
DECL_INTERFACE_KNOWN (decl1) = 1;
/* If this function is in an interface implemented in this file,
make sure that the back end knows to emit this function
here. */
if (!DECL_EXTERNAL (decl1))
mark_needed (decl1);
}
else if (finfo->interface_unknown && finfo->interface_only
&& honor_interface)
{
/* If MULTIPLE_SYMBOL_SPACES is defined and we saw a #pragma
interface, we will have both finfo->interface_unknown and
finfo->interface_only set. In that case, we don't want to
use the normal heuristics because someone will supply a
#pragma implementation elsewhere, and deducing it here would
produce a conflict. */
comdat_linkage (decl1);
DECL_EXTERNAL (decl1) = 0;
DECL_INTERFACE_KNOWN (decl1) = 1;
DECL_DEFER_OUTPUT (decl1) = 1;
}
else
{
/* This is a definition, not a reference.
So clear DECL_EXTERNAL, unless this is a GNU extern inline. */
if (!GNU_INLINE_P (decl1))
DECL_EXTERNAL (decl1) = 0;
if ((DECL_DECLARED_INLINE_P (decl1)
|| DECL_TEMPLATE_INSTANTIATION (decl1))
&& ! DECL_INTERFACE_KNOWN (decl1))
DECL_DEFER_OUTPUT (decl1) = 1;
else
DECL_INTERFACE_KNOWN (decl1) = 1;
}
/* Determine the ELF visibility attribute for the function. We must not
do this before calling "pushdecl", as we must allow "duplicate_decls"
to merge any attributes appropriately. We also need to wait until
linkage is set. */
if (!DECL_CLONED_FUNCTION_P (decl1))
determine_visibility (decl1);
begin_scope (sk_function_parms, decl1);
++function_depth;
if (DECL_DESTRUCTOR_P (decl1)
|| (DECL_CONSTRUCTOR_P (decl1)
&& targetm.cxx.cdtor_returns_this ()))
{
cdtor_label = build_decl (input_location,
LABEL_DECL, NULL_TREE, NULL_TREE);
DECL_CONTEXT (cdtor_label) = current_function_decl;
}
start_fname_decls ();
store_parm_decls (current_function_parms);
}
/* Like start_preparsed_function, except that instead of a
FUNCTION_DECL, this function takes DECLSPECS and DECLARATOR.
Returns 1 on success. If the DECLARATOR is not suitable for a function
(it defines a datum instead), we return 0, which tells
yyparse to report a parse error. */
int
start_function (cp_decl_specifier_seq *declspecs,
const cp_declarator *declarator,
tree attrs)
{
tree decl1;
decl1 = grokdeclarator (declarator, declspecs, FUNCDEF, 1, &attrs);
if (decl1 == error_mark_node)
return 0;
/* If the declarator is not suitable for a function definition,
cause a syntax error. */
if (decl1 == NULL_TREE || TREE_CODE (decl1) != FUNCTION_DECL)
{
error ("invalid function declaration");
return 0;
}
if (DECL_MAIN_P (decl1))
/* main must return int. grokfndecl should have corrected it
(and issued a diagnostic) if the user got it wrong. */
gcc_assert (same_type_p (TREE_TYPE (TREE_TYPE (decl1)),
integer_type_node));
start_preparsed_function (decl1, attrs, /*flags=*/SF_DEFAULT);
return 1;
}
/* Returns true iff an EH_SPEC_BLOCK should be created in the body of
FN. */
static bool
use_eh_spec_block (tree fn)
{
return (flag_exceptions && flag_enforce_eh_specs
&& !processing_template_decl
&& !type_throw_all_p (TREE_TYPE (fn))
/* We insert the EH_SPEC_BLOCK only in the original
function; then, it is copied automatically to the
clones. */
&& !DECL_CLONED_FUNCTION_P (fn)
/* Implicitly-generated constructors and destructors have
exception specifications. However, those specifications
are the union of the possible exceptions specified by the
constructors/destructors for bases and members, so no
unallowed exception will ever reach this function. By
not creating the EH_SPEC_BLOCK we save a little memory,
and we avoid spurious warnings about unreachable
code. */
&& !DECL_ARTIFICIAL (fn));
}
/* Store the parameter declarations into the current function declaration.
This is called after parsing the parameter declarations, before
digesting the body of the function.
Also install to binding contour return value identifier, if any. */
static void
store_parm_decls (tree current_function_parms)
{
tree fndecl = current_function_decl;
tree parm;
/* This is a chain of any other decls that came in among the parm
declarations. If a parm is declared with enum {foo, bar} x;
then CONST_DECLs for foo and bar are put here. */
tree nonparms = NULL_TREE;
if (current_function_parms)
{
/* This case is when the function was defined with an ANSI prototype.
The parms already have decls, so we need not do anything here
except record them as in effect
and complain if any redundant old-style parm decls were written. */
tree specparms = current_function_parms;
tree next;
/* Must clear this because it might contain TYPE_DECLs declared
at class level. */
current_binding_level->names = NULL;
/* If we're doing semantic analysis, then we'll call pushdecl
for each of these. We must do them in reverse order so that
they end in the correct forward order. */
specparms = nreverse (specparms);
for (parm = specparms; parm; parm = next)
{
next = DECL_CHAIN (parm);
if (TREE_CODE (parm) == PARM_DECL)
{
if (DECL_NAME (parm) == NULL_TREE
|| TREE_CODE (parm) != VOID_TYPE)
pushdecl (parm);
else
error ("parameter %qD declared void", parm);
}
else
{
/* If we find an enum constant or a type tag,
put it aside for the moment. */
TREE_CHAIN (parm) = NULL_TREE;
nonparms = chainon (nonparms, parm);
}
}
/* Get the decls in their original chain order and record in the
function. This is all and only the PARM_DECLs that were
pushed into scope by the loop above. */
DECL_ARGUMENTS (fndecl) = getdecls ();
}
else
DECL_ARGUMENTS (fndecl) = NULL_TREE;
/* Now store the final chain of decls for the arguments
as the decl-chain of the current lexical scope.
Put the enumerators in as well, at the front so that
DECL_ARGUMENTS is not modified. */
current_binding_level->names = chainon (nonparms, DECL_ARGUMENTS (fndecl));
if (use_eh_spec_block (current_function_decl))
current_eh_spec_block = begin_eh_spec_block ();
}
/* We have finished doing semantic analysis on DECL, but have not yet
generated RTL for its body. Save away our current state, so that
when we want to generate RTL later we know what to do. */
static void
save_function_data (tree decl)
{
struct language_function *f;
/* Save the language-specific per-function data so that we can
get it back when we really expand this function. */
gcc_assert (!DECL_PENDING_INLINE_P (decl));
/* Make a copy. */
f = ggc_alloc_language_function ();
memcpy (f, cp_function_chain, sizeof (struct language_function));
DECL_SAVED_FUNCTION_DATA (decl) = f;
/* Clear out the bits we don't need. */
f->base.x_stmt_tree.x_cur_stmt_list = NULL_TREE;
f->bindings = NULL;
f->x_local_names = NULL;
}
/* Set the return value of the constructor (if present). */
static void
finish_constructor_body (void)
{
tree val;
tree exprstmt;
if (targetm.cxx.cdtor_returns_this ()
&& (! TYPE_FOR_JAVA (current_class_type)))
{
/* Any return from a constructor will end up here. */
add_stmt (build_stmt (input_location, LABEL_EXPR, cdtor_label));
val = DECL_ARGUMENTS (current_function_decl);
val = build2 (MODIFY_EXPR, TREE_TYPE (val),
DECL_RESULT (current_function_decl), val);
/* Return the address of the object. */
exprstmt = build_stmt (input_location, RETURN_EXPR, val);
add_stmt (exprstmt);
}
}
/* Do all the processing for the beginning of a destructor; set up the
vtable pointers and cleanups for bases and members. */
static void
begin_destructor_body (void)
{
tree compound_stmt;
/* If the CURRENT_CLASS_TYPE is incomplete, we will have already
issued an error message. We still want to try to process the
body of the function, but initialize_vtbl_ptrs will crash if
TYPE_BINFO is NULL. */
if (COMPLETE_TYPE_P (current_class_type))
{
compound_stmt = begin_compound_stmt (0);
/* Make all virtual function table pointers in non-virtual base
classes point to CURRENT_CLASS_TYPE's virtual function
tables. */
initialize_vtbl_ptrs (current_class_ptr);
finish_compound_stmt (compound_stmt);
/* And insert cleanups for our bases and members so that they
will be properly destroyed if we throw. */
push_base_cleanups ();
}
}
/* At the end of every destructor we generate code to delete the object if
necessary. Do that now. */
static void
finish_destructor_body (void)
{
tree exprstmt;
/* Any return from a destructor will end up here; that way all base
and member cleanups will be run when the function returns. */
add_stmt (build_stmt (input_location, LABEL_EXPR, cdtor_label));
/* In a virtual destructor, we must call delete. */
if (DECL_VIRTUAL_P (current_function_decl))
{
tree if_stmt;
tree virtual_size = cxx_sizeof (current_class_type);
/* [class.dtor]
At the point of definition of a virtual destructor (including
an implicit definition), non-placement operator delete shall
be looked up in the scope of the destructor's class and if
found shall be accessible and unambiguous. */
exprstmt = build_op_delete_call(DELETE_EXPR, current_class_ptr,
virtual_size,
/*global_p=*/false,
/*placement=*/NULL_TREE,
/*alloc_fn=*/NULL_TREE);
if_stmt = begin_if_stmt ();
finish_if_stmt_cond (build2 (BIT_AND_EXPR, integer_type_node,
current_in_charge_parm,
integer_one_node),
if_stmt);
finish_expr_stmt (exprstmt);
finish_then_clause (if_stmt);
finish_if_stmt (if_stmt);
}
if (targetm.cxx.cdtor_returns_this ())
{
tree val;
val = DECL_ARGUMENTS (current_function_decl);
val = build2 (MODIFY_EXPR, TREE_TYPE (val),
DECL_RESULT (current_function_decl), val);
/* Return the address of the object. */
exprstmt = build_stmt (input_location, RETURN_EXPR, val);
add_stmt (exprstmt);
}
}
/* Do the necessary processing for the beginning of a function body, which
in this case includes member-initializers, but not the catch clauses of
a function-try-block. Currently, this means opening a binding level
for the member-initializers (in a ctor) and member cleanups (in a dtor). */
tree
begin_function_body (void)
{
tree stmt;
if (! FUNCTION_NEEDS_BODY_BLOCK (current_function_decl))
return NULL_TREE;
if (processing_template_decl)
/* Do nothing now. */;
else
/* Always keep the BLOCK node associated with the outermost pair of
curly braces of a function. These are needed for correct
operation of dwarfout.c. */
keep_next_level (true);
stmt = begin_compound_stmt (BCS_FN_BODY);
if (processing_template_decl)
/* Do nothing now. */;
else if (DECL_DESTRUCTOR_P (current_function_decl))
begin_destructor_body ();
return stmt;
}
/* Do the processing for the end of a function body. Currently, this means
closing out the cleanups for fully-constructed bases and members, and in
the case of the destructor, deleting the object if desired. Again, this
is only meaningful for [cd]tors, since they are the only functions where
there is a significant distinction between the main body and any
function catch clauses. Handling, say, main() return semantics here
would be wrong, as flowing off the end of a function catch clause for
main() would also need to return 0. */
void
finish_function_body (tree compstmt)
{
if (compstmt == NULL_TREE)
return;
/* Close the block. */
finish_compound_stmt (compstmt);
if (processing_template_decl)
/* Do nothing now. */;
else if (DECL_CONSTRUCTOR_P (current_function_decl))
finish_constructor_body ();
else if (DECL_DESTRUCTOR_P (current_function_decl))
finish_destructor_body ();
}
/* Given a function, returns the BLOCK corresponding to the outermost level
of curly braces, skipping the artificial block created for constructor
initializers. */
tree
outer_curly_brace_block (tree fndecl)
{
tree block = BLOCK_SUBBLOCKS (DECL_INITIAL (fndecl));
if (FUNCTION_NEEDS_BODY_BLOCK (current_function_decl))
/* Skip the artificial function body block. */
block = BLOCK_SUBBLOCKS (block);
return block;
}
/* If FNDECL is a class's key method, add the class to the list of
keyed classes that should be emitted. */
static void
record_key_method_defined (tree fndecl)
{
if (DECL_NONSTATIC_MEMBER_FUNCTION_P (fndecl)
&& DECL_VIRTUAL_P (fndecl)
&& !processing_template_decl)
{
tree fnclass = DECL_CONTEXT (fndecl);
if (fndecl == CLASSTYPE_KEY_METHOD (fnclass))
keyed_classes = tree_cons (NULL_TREE, fnclass, keyed_classes);
}
}
/* Subroutine of finish_function.
Save the body of constexpr functions for possible
future compile time evaluation. */
static void
maybe_save_function_definition (tree fun)
{
if (!processing_template_decl
&& DECL_DECLARED_CONSTEXPR_P (fun)
&& !DECL_CLONED_FUNCTION_P (fun))
register_constexpr_fundef (fun, DECL_SAVED_TREE (fun));
}
/* Finish up a function declaration and compile that function
all the way to assembler language output. The free the storage
for the function definition.
FLAGS is a bitwise or of the following values:
2 - INCLASS_INLINE
We just finished processing the body of an in-class inline
function definition. (This processing will have taken place
after the class definition is complete.) */
tree
finish_function (int flags)
{
tree fndecl = current_function_decl;
tree fntype, ctype = NULL_TREE;
int inclass_inline = (flags & 2) != 0;
/* When we get some parse errors, we can end up without a
current_function_decl, so cope. */
if (fndecl == NULL_TREE)
return error_mark_node;
if (c_dialect_objc ())
objc_finish_function ();
gcc_assert (!defer_mark_used_calls);
defer_mark_used_calls = true;
record_key_method_defined (fndecl);
fntype = TREE_TYPE (fndecl);
/* TREE_READONLY (fndecl) = 1;
This caused &foo to be of type ptr-to-const-function
which then got a warning when stored in a ptr-to-function variable. */
gcc_assert (building_stmt_tree ());
/* The current function is being defined, so its DECL_INITIAL should
be set, and unless there's a multiple definition, it should be
error_mark_node. */
gcc_assert (DECL_INITIAL (fndecl) == error_mark_node);
/* For a cloned function, we've already got all the code we need;
there's no need to add any extra bits. */
if (!DECL_CLONED_FUNCTION_P (fndecl))
{
if (DECL_MAIN_P (current_function_decl))
{
tree stmt;
/* Make it so that `main' always returns 0 by default (or
1 for VMS). */
#if VMS_TARGET
stmt = finish_return_stmt (integer_one_node);
#else
stmt = finish_return_stmt (integer_zero_node);
#endif
/* Hack. We don't want the middle-end to warn that this
return is unreachable, so put the statement on the
special line 0. */
{
location_t linezero = linemap_line_start (line_table, 0, 1);
SET_EXPR_LOCATION (stmt, linezero);
}
}
if (use_eh_spec_block (current_function_decl))
finish_eh_spec_block (TYPE_RAISES_EXCEPTIONS
(TREE_TYPE (current_function_decl)),
current_eh_spec_block);
}
/* If we're saving up tree structure, tie off the function now. */
DECL_SAVED_TREE (fndecl) = pop_stmt_list (DECL_SAVED_TREE (fndecl));
finish_fname_decls ();
/* If this function can't throw any exceptions, remember that. */
if (!processing_template_decl
&& !cp_function_chain->can_throw
&& !flag_non_call_exceptions
&& !decl_replaceable_p (fndecl))
TREE_NOTHROW (fndecl) = 1;
/* This must come after expand_function_end because cleanups might
have declarations (from inline functions) that need to go into
this function's blocks. */
/* If the current binding level isn't the outermost binding level
for this function, either there is a bug, or we have experienced
syntax errors and the statement tree is malformed. */
if (current_binding_level->kind != sk_function_parms)
{
/* Make sure we have already experienced errors. */
gcc_assert (errorcount);
/* Throw away the broken statement tree and extra binding
levels. */
DECL_SAVED_TREE (fndecl) = alloc_stmt_list ();
while (current_binding_level->kind != sk_function_parms)
{
if (current_binding_level->kind == sk_class)
pop_nested_class ();
else
poplevel (0, 0, 0);
}
}
poplevel (1, 0, 1);
/* Statements should always be full-expressions at the outermost set
of curly braces for a function. */
gcc_assert (stmts_are_full_exprs_p ());
/* Save constexpr function body before it gets munged by
the NRV transformation. */
maybe_save_function_definition (fndecl);
/* Set up the named return value optimization, if we can. Candidate
variables are selected in check_return_expr. */
if (current_function_return_value)
{
tree r = current_function_return_value;
tree outer;
if (r != error_mark_node
/* This is only worth doing for fns that return in memory--and
simpler, since we don't have to worry about promoted modes. */
&& aggregate_value_p (TREE_TYPE (TREE_TYPE (fndecl)), fndecl)
/* Only allow this for variables declared in the outer scope of
the function so we know that their lifetime always ends with a
return; see g++.dg/opt/nrv6.C. We could be more flexible if
we were to do this optimization in tree-ssa. */
&& (outer = outer_curly_brace_block (fndecl))
&& chain_member (r, BLOCK_VARS (outer)))
finalize_nrv (&DECL_SAVED_TREE (fndecl), r, DECL_RESULT (fndecl));
current_function_return_value = NULL_TREE;
}
/* Remember that we were in class scope. */
if (current_class_name)
ctype = current_class_type;
/* Must mark the RESULT_DECL as being in this function. */
DECL_CONTEXT (DECL_RESULT (fndecl)) = fndecl;
/* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
to the FUNCTION_DECL node itself. */
BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl;
/* Save away current state, if appropriate. */
if (!processing_template_decl)
save_function_data (fndecl);
/* Complain if there's just no return statement. */
if (warn_return_type
&& TREE_CODE (TREE_TYPE (fntype)) != VOID_TYPE
&& !dependent_type_p (TREE_TYPE (fntype))
&& !current_function_returns_value && !current_function_returns_null
/* Don't complain if we abort or throw. */
&& !current_function_returns_abnormally
/* Don't complain if we are declared noreturn. */
&& !TREE_THIS_VOLATILE (fndecl)
&& !DECL_NAME (DECL_RESULT (fndecl))
&& !TREE_NO_WARNING (fndecl)
/* Structor return values (if any) are set by the compiler. */
&& !DECL_CONSTRUCTOR_P (fndecl)
&& !DECL_DESTRUCTOR_P (fndecl))
{
warning (OPT_Wreturn_type,
"no return statement in function returning non-void");
TREE_NO_WARNING (fndecl) = 1;
}
/* Store the end of the function, so that we get good line number
info for the epilogue. */
cfun->function_end_locus = input_location;
/* Complain about parameters that are only set, but never otherwise used. */
if (warn_unused_but_set_parameter
&& !processing_template_decl
&& errorcount == unused_but_set_errorcount
&& !DECL_CLONED_FUNCTION_P (fndecl))
{
tree decl;
for (decl = DECL_ARGUMENTS (fndecl);
decl;
decl = DECL_CHAIN (decl))
if (TREE_USED (decl)
&& TREE_CODE (decl) == PARM_DECL
&& !DECL_READ_P (decl)
&& DECL_NAME (decl)
&& !DECL_ARTIFICIAL (decl)
&& !TREE_NO_WARNING (decl)
&& !DECL_IN_SYSTEM_HEADER (decl)
&& TREE_TYPE (decl) != error_mark_node
&& TREE_CODE (TREE_TYPE (decl)) != REFERENCE_TYPE
&& (!CLASS_TYPE_P (TREE_TYPE (decl))
|| !TYPE_HAS_NONTRIVIAL_DESTRUCTOR (TREE_TYPE (decl))))
warning (OPT_Wunused_but_set_parameter,
"parameter %q+D set but not used", decl);
unused_but_set_errorcount = errorcount;
}
/* Genericize before inlining. */
if (!processing_template_decl)
{
struct language_function *f = DECL_SAVED_FUNCTION_DATA (fndecl);
invoke_plugin_callbacks (PLUGIN_PRE_GENERICIZE, fndecl);
cp_genericize (fndecl);
/* Clear out the bits we don't need. */
f->x_current_class_ptr = NULL;
f->x_current_class_ref = NULL;
f->x_eh_spec_block = NULL;
f->x_in_charge_parm = NULL;
f->x_vtt_parm = NULL;
f->x_return_value = NULL;
f->bindings = NULL;
f->extern_decl_map = NULL;
}
/* Clear out the bits we don't need. */
local_names = NULL;
/* We're leaving the context of this function, so zap cfun. It's still in
DECL_STRUCT_FUNCTION, and we'll restore it in tree_rest_of_compilation. */
set_cfun (NULL);
current_function_decl = NULL;
/* If this is an in-class inline definition, we may have to pop the
bindings for the template parameters that we added in
maybe_begin_member_template_processing when start_function was
called. */
if (inclass_inline)
maybe_end_member_template_processing ();
/* Leave the scope of the class. */
if (ctype)
pop_nested_class ();
--function_depth;
/* Clean up. */
current_function_decl = NULL_TREE;
defer_mark_used_calls = false;
if (deferred_mark_used_calls)
{
unsigned int i;
tree decl;
FOR_EACH_VEC_ELT (tree, deferred_mark_used_calls, i, decl)
mark_used (decl);
VEC_free (tree, gc, deferred_mark_used_calls);
}
return fndecl;
}
/* Create the FUNCTION_DECL for a function definition.
DECLSPECS and DECLARATOR are the parts of the declaration;
they describe the return type and the name of the function,
but twisted together in a fashion that parallels the syntax of C.
This function creates a binding context for the function body
as well as setting up the FUNCTION_DECL in current_function_decl.
Returns a FUNCTION_DECL on success.
If the DECLARATOR is not suitable for a function (it defines a datum
instead), we return 0, which tells yyparse to report a parse error.
May return void_type_node indicating that this method is actually
a friend. See grokfield for more details.
Came here with a `.pushlevel' .
DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
CHANGES TO CODE IN `grokfield'. */
tree
grokmethod (cp_decl_specifier_seq *declspecs,
const cp_declarator *declarator, tree attrlist)
{
tree fndecl = grokdeclarator (declarator, declspecs, MEMFUNCDEF, 0,
&attrlist);
if (fndecl == error_mark_node)
return error_mark_node;
if (fndecl == NULL || TREE_CODE (fndecl) != FUNCTION_DECL)
{
error ("invalid member function declaration");
return error_mark_node;
}
if (attrlist)
cplus_decl_attributes (&fndecl, attrlist, 0);
/* Pass friends other than inline friend functions back. */
if (fndecl == void_type_node)
return fndecl;
if (DECL_IN_AGGR_P (fndecl))
{
if (DECL_CLASS_SCOPE_P (fndecl))
error ("%qD is already defined in class %qT", fndecl,
DECL_CONTEXT (fndecl));
return error_mark_node;
}
check_template_shadow (fndecl);
DECL_DECLARED_INLINE_P (fndecl) = 1;
DECL_NO_INLINE_WARNING_P (fndecl) = 1;
/* We process method specializations in finish_struct_1. */
if (processing_template_decl && !DECL_TEMPLATE_SPECIALIZATION (fndecl))
{
fndecl = push_template_decl (fndecl);
if (fndecl == error_mark_node)
return fndecl;
}
if (! DECL_FRIEND_P (fndecl))
{
if (DECL_CHAIN (fndecl))
{
fndecl = copy_node (fndecl);
TREE_CHAIN (fndecl) = NULL_TREE;
}
}
cp_finish_decl (fndecl, NULL_TREE, false, NULL_TREE, 0);
DECL_IN_AGGR_P (fndecl) = 1;
return fndecl;
}
/* VAR is a VAR_DECL. If its type is incomplete, remember VAR so that
we can lay it out later, when and if its type becomes complete. */
void
maybe_register_incomplete_var (tree var)
{
gcc_assert (TREE_CODE (var) == VAR_DECL);
/* Keep track of variables with incomplete types. */
if (!processing_template_decl && TREE_TYPE (var) != error_mark_node
&& DECL_EXTERNAL (var))
{
tree inner_type = TREE_TYPE (var);
while (TREE_CODE (inner_type) == ARRAY_TYPE)
inner_type = TREE_TYPE (inner_type);
inner_type = TYPE_MAIN_VARIANT (inner_type);
if ((!COMPLETE_TYPE_P (inner_type) && CLASS_TYPE_P (inner_type))
/* RTTI TD entries are created while defining the type_info. */
|| (TYPE_LANG_SPECIFIC (inner_type)
&& TYPE_BEING_DEFINED (inner_type)))
{
incomplete_var *iv
= VEC_safe_push (incomplete_var, gc, incomplete_vars, NULL);
iv->decl = var;
iv->incomplete_type = inner_type;
}
}
}
/* Called when a class type (given by TYPE) is defined. If there are
any existing VAR_DECLs whose type has been completed by this
declaration, update them now. */
void
complete_vars (tree type)
{
unsigned ix;
incomplete_var *iv;
for (ix = 0; VEC_iterate (incomplete_var, incomplete_vars, ix, iv); )
{
if (same_type_p (type, iv->incomplete_type))
{
tree var = iv->decl;
tree type = TREE_TYPE (var);
/* Complete the type of the variable. The VAR_DECL itself
will be laid out in expand_expr. */
complete_type (type);
cp_apply_type_quals_to_decl (cp_type_quals (type), var);
/* Remove this entry from the list. */
VEC_unordered_remove (incomplete_var, incomplete_vars, ix);
}
else
ix++;
}
/* Check for pending declarations which may have abstract type. */
complete_type_check_abstract (type);
}
/* If DECL is of a type which needs a cleanup, build and return an
expression to perform that cleanup here. Return NULL_TREE if no
cleanup need be done. */
tree
cxx_maybe_build_cleanup (tree decl)
{
tree type;
tree attr;
tree cleanup;
/* Assume no cleanup is required. */
cleanup = NULL_TREE;
if (error_operand_p (decl))
return cleanup;
/* Handle "__attribute__((cleanup))". We run the cleanup function
before the destructor since the destructor is what actually
terminates the lifetime of the object. */
attr = lookup_attribute ("cleanup", DECL_ATTRIBUTES (decl));
if (attr)
{
tree id;
tree fn;
tree arg;
/* Get the name specified by the user for the cleanup function. */
id = TREE_VALUE (TREE_VALUE (attr));
/* Look up the name to find the cleanup function to call. It is
important to use lookup_name here because that is what is
used in c-common.c:handle_cleanup_attribute when performing
initial checks on the attribute. Note that those checks
include ensuring that the function found is not an overloaded
function, or an object with an overloaded call operator,
etc.; we can rely on the fact that the function found is an
ordinary FUNCTION_DECL. */
fn = lookup_name (id);
arg = build_address (decl);
mark_used (decl);
cleanup = cp_build_function_call_nary (fn, tf_warning_or_error,
arg, NULL_TREE);
}
/* Handle ordinary C++ destructors. */
type = TREE_TYPE (decl);
if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type))
{
int flags = LOOKUP_NORMAL|LOOKUP_DESTRUCTOR;
bool has_vbases = (TREE_CODE (type) == RECORD_TYPE
&& CLASSTYPE_VBASECLASSES (type));
tree addr;
tree call;
if (TREE_CODE (type) == ARRAY_TYPE)
addr = decl;
else
addr = build_address (decl);
/* Optimize for space over speed here. */
if (!has_vbases || flag_expensive_optimizations)
flags |= LOOKUP_NONVIRTUAL;
call = build_delete (TREE_TYPE (addr), addr,
sfk_complete_destructor, flags, 0);
if (cleanup)
cleanup = build_compound_expr (input_location, cleanup, call);
else
cleanup = call;
}
return cleanup;
}
/* When a stmt has been parsed, this function is called. */
void
finish_stmt (void)
{
}
/* Return the FUNCTION_TYPE that corresponds to MEMFNTYPE, which can be a
FUNCTION_DECL, METHOD_TYPE, FUNCTION_TYPE, pointer or reference to
METHOD_TYPE or FUNCTION_TYPE, or pointer to member function. */
tree
static_fn_type (tree memfntype)
{
tree fntype;
tree args;
if (TYPE_PTRMEMFUNC_P (memfntype))
memfntype = TYPE_PTRMEMFUNC_FN_TYPE (memfntype);
if (POINTER_TYPE_P (memfntype)
|| TREE_CODE (memfntype) == FUNCTION_DECL)
memfntype = TREE_TYPE (memfntype);
if (TREE_CODE (memfntype) == FUNCTION_TYPE)
return memfntype;
gcc_assert (TREE_CODE (memfntype) == METHOD_TYPE);
args = TYPE_ARG_TYPES (memfntype);
fntype = build_function_type (TREE_TYPE (memfntype), TREE_CHAIN (args));
fntype = apply_memfn_quals (fntype, type_memfn_quals (memfntype));
fntype = (cp_build_type_attribute_variant
(fntype, TYPE_ATTRIBUTES (memfntype)));
fntype = (build_exception_variant
(fntype, TYPE_RAISES_EXCEPTIONS (memfntype)));
return fntype;
}
/* DECL was originally constructed as a non-static member function,
but turned out to be static. Update it accordingly. */
void
revert_static_member_fn (tree decl)
{
tree stype = static_fn_type (decl);
if (type_memfn_quals (stype) != TYPE_UNQUALIFIED)
{
error ("static member function %q#D declared with type qualifiers", decl);
stype = apply_memfn_quals (stype, TYPE_UNQUALIFIED);
}
TREE_TYPE (decl) = stype;
if (DECL_ARGUMENTS (decl))
DECL_ARGUMENTS (decl) = DECL_CHAIN (DECL_ARGUMENTS (decl));
DECL_STATIC_FUNCTION_P (decl) = 1;
}
/* Return which tree structure is used by T, or TS_CP_GENERIC if T is
one of the language-independent trees. */
enum cp_tree_node_structure_enum
cp_tree_node_structure (union lang_tree_node * t)
{
switch (TREE_CODE (&t->generic))
{
case DEFAULT_ARG: return TS_CP_DEFAULT_ARG;
case IDENTIFIER_NODE: return TS_CP_IDENTIFIER;
case OVERLOAD: return TS_CP_OVERLOAD;
case TEMPLATE_PARM_INDEX: return TS_CP_TPI;
case PTRMEM_CST: return TS_CP_PTRMEM;
case BASELINK: return TS_CP_BASELINK;
case STATIC_ASSERT: return TS_CP_STATIC_ASSERT;
case ARGUMENT_PACK_SELECT: return TS_CP_ARGUMENT_PACK_SELECT;
case TRAIT_EXPR: return TS_CP_TRAIT_EXPR;
case LAMBDA_EXPR: return TS_CP_LAMBDA_EXPR;
case TEMPLATE_INFO: return TS_CP_TEMPLATE_INFO;
default: return TS_CP_GENERIC;
}
}
/* Build the void_list_node (void_type_node having been created). */
tree
build_void_list_node (void)
{
tree t = build_tree_list (NULL_TREE, void_type_node);
return t;
}
bool
cp_missing_noreturn_ok_p (tree decl)
{
/* A missing noreturn is ok for the `main' function. */
return DECL_MAIN_P (decl);
}
/* Return the COMDAT group into which DECL should be placed. */
tree
cxx_comdat_group (tree decl)
{
tree name;
/* Virtual tables, construction virtual tables, and virtual table
tables all go in a single COMDAT group, named after the primary
virtual table. */
if (TREE_CODE (decl) == VAR_DECL && DECL_VTABLE_OR_VTT_P (decl))
name = DECL_ASSEMBLER_NAME (CLASSTYPE_VTABLES (DECL_CONTEXT (decl)));
/* For all other DECLs, the COMDAT group is the mangled name of the
declaration itself. */
else
{
while (DECL_THUNK_P (decl))
{
/* If TARGET_USE_LOCAL_THUNK_ALIAS_P, use_thunk puts the thunk
into the same section as the target function. In that case
we must return target's name. */
tree target = THUNK_TARGET (decl);
if (TARGET_USE_LOCAL_THUNK_ALIAS_P (target)
&& DECL_SECTION_NAME (target) != NULL
&& DECL_ONE_ONLY (target))
decl = target;
else
break;
}
name = DECL_ASSEMBLER_NAME (decl);
}
return name;
}
#include "gt-cp-decl.h"
|