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
|
/* Process declarations and variables for C++ compiler.
Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
Free Software Foundation, Inc.
Hacked 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 "rtl.h"
#include "expr.h"
#include "flags.h"
#include "cp-tree.h"
#include "decl.h"
#include "output.h"
#include "except.h"
#include "toplev.h"
#include "timevar.h"
#include "cpplib.h"
#include "target.h"
#include "c-common.h"
#include "tree-mudflap.h"
#include "cgraph.h"
#include "tree-inline.h"
#include "c-pragma.h"
#include "tree-dump.h"
#include "intl.h"
#include "gimple.h"
#include "pointer-set.h"
extern cpp_reader *parse_in;
/* This structure contains information about the initializations
and/or destructions required for a particular priority level. */
typedef struct priority_info_s {
/* Nonzero if there have been any initializations at this priority
throughout the translation unit. */
int initializations_p;
/* Nonzero if there have been any destructions at this priority
throughout the translation unit. */
int destructions_p;
} *priority_info;
static void mark_vtable_entries (tree);
static bool maybe_emit_vtables (tree);
static bool acceptable_java_type (tree);
static tree start_objects (int, int);
static void finish_objects (int, int, tree);
static tree start_static_storage_duration_function (unsigned);
static void finish_static_storage_duration_function (tree);
static priority_info get_priority_info (int);
static void do_static_initialization_or_destruction (tree, bool);
static void one_static_initialization_or_destruction (tree, tree, bool);
static void generate_ctor_or_dtor_function (bool, int, location_t *);
static int generate_ctor_and_dtor_functions_for_priority (splay_tree_node,
void *);
static tree prune_vars_needing_no_initialization (tree *);
static void write_out_vars (tree);
static void import_export_class (tree);
static tree get_guard_bits (tree);
static void determine_visibility_from_class (tree, tree);
static bool decl_defined_p (tree);
/* A list of static class variables. This is needed, because a
static class variable can be declared inside the class without
an initializer, and then initialized, statically, outside the class. */
static GTY(()) VEC(tree,gc) *pending_statics;
/* A list of functions which were declared inline, but which we
may need to emit outline anyway. */
static GTY(()) VEC(tree,gc) *deferred_fns;
/* A list of decls that use types with no linkage, which we need to make
sure are defined. */
static GTY(()) VEC(tree,gc) *no_linkage_decls;
/* Nonzero if we're done parsing and into end-of-file activities. */
int at_eof;
/* Return a member function type (a METHOD_TYPE), given FNTYPE (a
FUNCTION_TYPE), CTYPE (class type), and QUALS (the cv-qualifiers
that apply to the function). */
tree
build_memfn_type (tree fntype, tree ctype, cp_cv_quals quals)
{
tree raises;
tree attrs;
int type_quals;
if (fntype == error_mark_node || ctype == error_mark_node)
return error_mark_node;
gcc_assert (TREE_CODE (fntype) == FUNCTION_TYPE
|| TREE_CODE (fntype) == METHOD_TYPE);
type_quals = quals & ~TYPE_QUAL_RESTRICT;
ctype = cp_build_qualified_type (ctype, type_quals);
raises = TYPE_RAISES_EXCEPTIONS (fntype);
attrs = TYPE_ATTRIBUTES (fntype);
fntype = build_method_type_directly (ctype, TREE_TYPE (fntype),
(TREE_CODE (fntype) == METHOD_TYPE
? TREE_CHAIN (TYPE_ARG_TYPES (fntype))
: TYPE_ARG_TYPES (fntype)));
if (raises)
fntype = build_exception_variant (fntype, raises);
if (attrs)
fntype = cp_build_type_attribute_variant (fntype, attrs);
return fntype;
}
/* Return a variant of FNTYPE, a FUNCTION_TYPE or METHOD_TYPE, with its
return type changed to NEW_RET. */
tree
change_return_type (tree new_ret, tree fntype)
{
tree newtype;
tree args = TYPE_ARG_TYPES (fntype);
tree raises = TYPE_RAISES_EXCEPTIONS (fntype);
tree attrs = TYPE_ATTRIBUTES (fntype);
if (same_type_p (new_ret, TREE_TYPE (fntype)))
return fntype;
if (TREE_CODE (fntype) == FUNCTION_TYPE)
{
newtype = build_function_type (new_ret, args);
newtype = apply_memfn_quals (newtype, type_memfn_quals (fntype));
}
else
newtype = build_method_type_directly
(TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (fntype))),
new_ret, TREE_CHAIN (args));
if (raises)
newtype = build_exception_variant (newtype, raises);
if (attrs)
newtype = cp_build_type_attribute_variant (newtype, attrs);
return newtype;
}
/* Build a PARM_DECL with NAME and TYPE, and set DECL_ARG_TYPE
appropriately. */
tree
cp_build_parm_decl (tree name, tree type)
{
tree parm = build_decl (input_location,
PARM_DECL, name, type);
/* DECL_ARG_TYPE is only used by the back end and the back end never
sees templates. */
if (!processing_template_decl)
DECL_ARG_TYPE (parm) = type_passed_as (type);
/* If the type is a pack expansion, then we have a function
parameter pack. */
if (type && TREE_CODE (type) == TYPE_PACK_EXPANSION)
FUNCTION_PARAMETER_PACK_P (parm) = 1;
return parm;
}
/* Returns a PARM_DECL for a parameter of the indicated TYPE, with the
indicated NAME. */
tree
build_artificial_parm (tree name, tree type)
{
tree parm = cp_build_parm_decl (name, type);
DECL_ARTIFICIAL (parm) = 1;
/* All our artificial parms are implicitly `const'; they cannot be
assigned to. */
TREE_READONLY (parm) = 1;
return parm;
}
/* Constructors for types with virtual baseclasses need an "in-charge" flag
saying whether this constructor is responsible for initialization of
virtual baseclasses or not. All destructors also need this "in-charge"
flag, which additionally determines whether or not the destructor should
free the memory for the object.
This function adds the "in-charge" flag to member function FN if
appropriate. It is called from grokclassfn and tsubst.
FN must be either a constructor or destructor.
The in-charge flag follows the 'this' parameter, and is followed by the
VTT parm (if any), then the user-written parms. */
void
maybe_retrofit_in_chrg (tree fn)
{
tree basetype, arg_types, parms, parm, fntype;
/* If we've already add the in-charge parameter don't do it again. */
if (DECL_HAS_IN_CHARGE_PARM_P (fn))
return;
/* When processing templates we can't know, in general, whether or
not we're going to have virtual baseclasses. */
if (processing_template_decl)
return;
/* We don't need an in-charge parameter for constructors that don't
have virtual bases. */
if (DECL_CONSTRUCTOR_P (fn)
&& !CLASSTYPE_VBASECLASSES (DECL_CONTEXT (fn)))
return;
arg_types = TYPE_ARG_TYPES (TREE_TYPE (fn));
basetype = TREE_TYPE (TREE_VALUE (arg_types));
arg_types = TREE_CHAIN (arg_types);
parms = TREE_CHAIN (DECL_ARGUMENTS (fn));
/* If this is a subobject constructor or destructor, our caller will
pass us a pointer to our VTT. */
if (CLASSTYPE_VBASECLASSES (DECL_CONTEXT (fn)))
{
parm = build_artificial_parm (vtt_parm_identifier, vtt_parm_type);
/* First add it to DECL_ARGUMENTS between 'this' and the real args... */
TREE_CHAIN (parm) = parms;
parms = parm;
/* ...and then to TYPE_ARG_TYPES. */
arg_types = hash_tree_chain (vtt_parm_type, arg_types);
DECL_HAS_VTT_PARM_P (fn) = 1;
}
/* Then add the in-charge parm (before the VTT parm). */
parm = build_artificial_parm (in_charge_identifier, integer_type_node);
TREE_CHAIN (parm) = parms;
parms = parm;
arg_types = hash_tree_chain (integer_type_node, arg_types);
/* Insert our new parameter(s) into the list. */
TREE_CHAIN (DECL_ARGUMENTS (fn)) = parms;
/* And rebuild the function type. */
fntype = build_method_type_directly (basetype, TREE_TYPE (TREE_TYPE (fn)),
arg_types);
if (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (fn)))
fntype = build_exception_variant (fntype,
TYPE_RAISES_EXCEPTIONS (TREE_TYPE (fn)));
if (TYPE_ATTRIBUTES (TREE_TYPE (fn)))
fntype = (cp_build_type_attribute_variant
(fntype, TYPE_ATTRIBUTES (TREE_TYPE (fn))));
TREE_TYPE (fn) = fntype;
/* Now we've got the in-charge parameter. */
DECL_HAS_IN_CHARGE_PARM_P (fn) = 1;
}
/* Classes overload their constituent function names automatically.
When a function name is declared in a record structure,
its name is changed to it overloaded name. Since names for
constructors and destructors can conflict, we place a leading
'$' for destructors.
CNAME is the name of the class we are grokking for.
FUNCTION is a FUNCTION_DECL. It was created by `grokdeclarator'.
FLAGS contains bits saying what's special about today's
arguments. DTOR_FLAG == DESTRUCTOR.
If FUNCTION is a destructor, then we must add the `auto-delete' field
as a second parameter. There is some hair associated with the fact
that we must "declare" this variable in the manner consistent with the
way the rest of the arguments were declared.
QUALS are the qualifiers for the this pointer. */
void
grokclassfn (tree ctype, tree function, enum overload_flags flags)
{
tree fn_name = DECL_NAME (function);
/* Even within an `extern "C"' block, members get C++ linkage. See
[dcl.link] for details. */
SET_DECL_LANGUAGE (function, lang_cplusplus);
if (fn_name == NULL_TREE)
{
error ("name missing for member function");
fn_name = get_identifier ("<anonymous>");
DECL_NAME (function) = fn_name;
}
DECL_CONTEXT (function) = ctype;
if (flags == DTOR_FLAG)
DECL_DESTRUCTOR_P (function) = 1;
if (flags == DTOR_FLAG || DECL_CONSTRUCTOR_P (function))
maybe_retrofit_in_chrg (function);
}
/* Create an ARRAY_REF, checking for the user doing things backwards
along the way. */
tree
grok_array_decl (tree array_expr, tree index_exp)
{
tree type;
tree expr;
tree orig_array_expr = array_expr;
tree orig_index_exp = index_exp;
if (error_operand_p (array_expr) || error_operand_p (index_exp))
return error_mark_node;
if (processing_template_decl)
{
if (type_dependent_expression_p (array_expr)
|| type_dependent_expression_p (index_exp))
return build_min_nt (ARRAY_REF, array_expr, index_exp,
NULL_TREE, NULL_TREE);
array_expr = build_non_dependent_expr (array_expr);
index_exp = build_non_dependent_expr (index_exp);
}
type = TREE_TYPE (array_expr);
gcc_assert (type);
type = non_reference (type);
/* If they have an `operator[]', use that. */
if (MAYBE_CLASS_TYPE_P (type) || MAYBE_CLASS_TYPE_P (TREE_TYPE (index_exp)))
expr = build_new_op (ARRAY_REF, LOOKUP_NORMAL,
array_expr, index_exp, NULL_TREE,
/*overloaded_p=*/NULL, tf_warning_or_error);
else
{
tree p1, p2, i1, i2;
/* Otherwise, create an ARRAY_REF for a pointer or array type.
It is a little-known fact that, if `a' is an array and `i' is
an int, you can write `i[a]', which means the same thing as
`a[i]'. */
if (TREE_CODE (type) == ARRAY_TYPE)
p1 = array_expr;
else
p1 = build_expr_type_conversion (WANT_POINTER, array_expr, false);
if (TREE_CODE (TREE_TYPE (index_exp)) == ARRAY_TYPE)
p2 = index_exp;
else
p2 = build_expr_type_conversion (WANT_POINTER, index_exp, false);
i1 = build_expr_type_conversion (WANT_INT | WANT_ENUM, array_expr,
false);
i2 = build_expr_type_conversion (WANT_INT | WANT_ENUM, index_exp,
false);
if ((p1 && i2) && (i1 && p2))
error ("ambiguous conversion for array subscript");
if (p1 && i2)
array_expr = p1, index_exp = i2;
else if (i1 && p2)
array_expr = p2, index_exp = i1;
else
{
error ("invalid types %<%T[%T]%> for array subscript",
type, TREE_TYPE (index_exp));
return error_mark_node;
}
if (array_expr == error_mark_node || index_exp == error_mark_node)
error ("ambiguous conversion for array subscript");
expr = build_array_ref (input_location, array_expr, index_exp);
}
if (processing_template_decl && expr != error_mark_node)
return build_min_non_dep (ARRAY_REF, expr, orig_array_expr, orig_index_exp,
NULL_TREE, NULL_TREE);
return expr;
}
/* Given the cast expression EXP, checking out its validity. Either return
an error_mark_node if there was an unavoidable error, return a cast to
void for trying to delete a pointer w/ the value 0, or return the
call to delete. If DOING_VEC is true, we handle things differently
for doing an array delete.
Implements ARM $5.3.4. This is called from the parser. */
tree
delete_sanity (tree exp, tree size, bool doing_vec, int use_global_delete)
{
tree t, type;
if (exp == error_mark_node)
return exp;
if (processing_template_decl)
{
t = build_min (DELETE_EXPR, void_type_node, exp, size);
DELETE_EXPR_USE_GLOBAL (t) = use_global_delete;
DELETE_EXPR_USE_VEC (t) = doing_vec;
TREE_SIDE_EFFECTS (t) = 1;
return t;
}
/* An array can't have been allocated by new, so complain. */
if (TREE_CODE (exp) == VAR_DECL
&& TREE_CODE (TREE_TYPE (exp)) == ARRAY_TYPE)
warning (0, "deleting array %q#D", exp);
t = build_expr_type_conversion (WANT_POINTER, exp, true);
if (t == NULL_TREE || t == error_mark_node)
{
error ("type %q#T argument given to %<delete%>, expected pointer",
TREE_TYPE (exp));
return error_mark_node;
}
type = TREE_TYPE (t);
/* As of Valley Forge, you can delete a pointer to const. */
/* You can't delete functions. */
if (TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE)
{
error ("cannot delete a function. Only pointer-to-objects are "
"valid arguments to %<delete%>");
return error_mark_node;
}
/* Deleting ptr to void is undefined behavior [expr.delete/3]. */
if (TREE_CODE (TREE_TYPE (type)) == VOID_TYPE)
{
warning (0, "deleting %qT is undefined", type);
doing_vec = 0;
}
/* Deleting a pointer with the value zero is valid and has no effect. */
if (integer_zerop (t))
return build1 (NOP_EXPR, void_type_node, t);
if (doing_vec)
return build_vec_delete (t, /*maxindex=*/NULL_TREE,
sfk_deleting_destructor,
use_global_delete);
else
return build_delete (type, t, sfk_deleting_destructor,
LOOKUP_NORMAL, use_global_delete);
}
/* Report an error if the indicated template declaration is not the
sort of thing that should be a member template. */
void
check_member_template (tree tmpl)
{
tree decl;
gcc_assert (TREE_CODE (tmpl) == TEMPLATE_DECL);
decl = DECL_TEMPLATE_RESULT (tmpl);
if (TREE_CODE (decl) == FUNCTION_DECL
|| (TREE_CODE (decl) == TYPE_DECL
&& MAYBE_CLASS_TYPE_P (TREE_TYPE (decl))))
{
/* The parser rejects template declarations in local classes. */
gcc_assert (!current_function_decl);
/* The parser rejects any use of virtual in a function template. */
gcc_assert (!(TREE_CODE (decl) == FUNCTION_DECL
&& DECL_VIRTUAL_P (decl)));
/* The debug-information generating code doesn't know what to do
with member templates. */
DECL_IGNORED_P (tmpl) = 1;
}
else
error ("template declaration of %q#D", decl);
}
/* Return true iff TYPE is a valid Java parameter or return type. */
static bool
acceptable_java_type (tree type)
{
if (type == error_mark_node)
return false;
if (TREE_CODE (type) == VOID_TYPE || TYPE_FOR_JAVA (type))
return true;
if (TREE_CODE (type) == POINTER_TYPE || TREE_CODE (type) == REFERENCE_TYPE)
{
type = TREE_TYPE (type);
if (TREE_CODE (type) == RECORD_TYPE)
{
tree args; int i;
if (! TYPE_FOR_JAVA (type))
return false;
if (! CLASSTYPE_TEMPLATE_INFO (type))
return true;
args = CLASSTYPE_TI_ARGS (type);
i = TREE_VEC_LENGTH (args);
while (--i >= 0)
{
type = TREE_VEC_ELT (args, i);
if (TREE_CODE (type) == POINTER_TYPE)
type = TREE_TYPE (type);
if (! TYPE_FOR_JAVA (type))
return false;
}
return true;
}
}
return false;
}
/* For a METHOD in a Java class CTYPE, return true if
the parameter and return types are valid Java types.
Otherwise, print appropriate error messages, and return false. */
bool
check_java_method (tree method)
{
bool jerr = false;
tree arg_types = TYPE_ARG_TYPES (TREE_TYPE (method));
tree ret_type = TREE_TYPE (TREE_TYPE (method));
if (!acceptable_java_type (ret_type))
{
error ("Java method %qD has non-Java return type %qT",
method, ret_type);
jerr = true;
}
arg_types = TREE_CHAIN (arg_types);
if (DECL_HAS_IN_CHARGE_PARM_P (method))
arg_types = TREE_CHAIN (arg_types);
if (DECL_HAS_VTT_PARM_P (method))
arg_types = TREE_CHAIN (arg_types);
for (; arg_types != NULL_TREE; arg_types = TREE_CHAIN (arg_types))
{
tree type = TREE_VALUE (arg_types);
if (!acceptable_java_type (type))
{
if (type != error_mark_node)
error ("Java method %qD has non-Java parameter type %qT",
method, type);
jerr = true;
}
}
return !jerr;
}
/* Sanity check: report error if this function FUNCTION is not
really a member of the class (CTYPE) it is supposed to belong to.
TEMPLATE_PARMS is used to specify the template parameters of a member
template passed as FUNCTION_DECL. If the member template is passed as a
TEMPLATE_DECL, it can be NULL since the parameters can be extracted
from the declaration. If the function is not a function template, it
must be NULL.
It returns the original declaration for the function, NULL_TREE if
no declaration was found, error_mark_node if an error was emitted. */
tree
check_classfn (tree ctype, tree function, tree template_parms)
{
int ix;
bool is_template;
tree pushed_scope;
if (DECL_USE_TEMPLATE (function)
&& !(TREE_CODE (function) == TEMPLATE_DECL
&& DECL_TEMPLATE_SPECIALIZATION (function))
&& DECL_MEMBER_TEMPLATE_P (DECL_TI_TEMPLATE (function)))
/* Since this is a specialization of a member template,
we're not going to find the declaration in the class.
For example, in:
struct S { template <typename T> void f(T); };
template <> void S::f(int);
we're not going to find `S::f(int)', but there's no
reason we should, either. We let our callers know we didn't
find the method, but we don't complain. */
return NULL_TREE;
/* Basic sanity check: for a template function, the template parameters
either were not passed, or they are the same of DECL_TEMPLATE_PARMS. */
if (TREE_CODE (function) == TEMPLATE_DECL)
{
if (template_parms
&& !comp_template_parms (template_parms,
DECL_TEMPLATE_PARMS (function)))
{
error ("template parameter lists provided don't match the "
"template parameters of %qD", function);
return error_mark_node;
}
template_parms = DECL_TEMPLATE_PARMS (function);
}
/* OK, is this a definition of a member template? */
is_template = (template_parms != NULL_TREE);
/* We must enter the scope here, because conversion operators are
named by target type, and type equivalence relies on typenames
resolving within the scope of CTYPE. */
pushed_scope = push_scope (ctype);
ix = class_method_index_for_fn (complete_type (ctype), function);
if (ix >= 0)
{
VEC(tree,gc) *methods = CLASSTYPE_METHOD_VEC (ctype);
tree fndecls, fndecl = 0;
bool is_conv_op;
const char *format = NULL;
for (fndecls = VEC_index (tree, methods, ix);
fndecls; fndecls = OVL_NEXT (fndecls))
{
tree p1, p2;
fndecl = OVL_CURRENT (fndecls);
p1 = TYPE_ARG_TYPES (TREE_TYPE (function));
p2 = TYPE_ARG_TYPES (TREE_TYPE (fndecl));
/* We cannot simply call decls_match because this doesn't
work for static member functions that are pretending to
be methods, and because the name may have been changed by
asm("new_name"). */
/* Get rid of the this parameter on functions that become
static. */
if (DECL_STATIC_FUNCTION_P (fndecl)
&& TREE_CODE (TREE_TYPE (function)) == METHOD_TYPE)
p1 = TREE_CHAIN (p1);
/* A member template definition only matches a member template
declaration. */
if (is_template != (TREE_CODE (fndecl) == TEMPLATE_DECL))
continue;
if (same_type_p (TREE_TYPE (TREE_TYPE (function)),
TREE_TYPE (TREE_TYPE (fndecl)))
&& compparms (p1, p2)
&& (!is_template
|| comp_template_parms (template_parms,
DECL_TEMPLATE_PARMS (fndecl)))
&& (DECL_TEMPLATE_SPECIALIZATION (function)
== DECL_TEMPLATE_SPECIALIZATION (fndecl))
&& (!DECL_TEMPLATE_SPECIALIZATION (function)
|| (DECL_TI_TEMPLATE (function)
== DECL_TI_TEMPLATE (fndecl))))
break;
}
if (fndecls)
{
if (pushed_scope)
pop_scope (pushed_scope);
return OVL_CURRENT (fndecls);
}
error_at (DECL_SOURCE_LOCATION (function),
"prototype for %q#D does not match any in class %qT",
function, ctype);
is_conv_op = DECL_CONV_FN_P (fndecl);
if (is_conv_op)
ix = CLASSTYPE_FIRST_CONVERSION_SLOT;
fndecls = VEC_index (tree, methods, ix);
while (fndecls)
{
fndecl = OVL_CURRENT (fndecls);
fndecls = OVL_NEXT (fndecls);
if (!fndecls && is_conv_op)
{
if (VEC_length (tree, methods) > (size_t) ++ix)
{
fndecls = VEC_index (tree, methods, ix);
if (!DECL_CONV_FN_P (OVL_CURRENT (fndecls)))
{
fndecls = NULL_TREE;
is_conv_op = false;
}
}
else
is_conv_op = false;
}
if (format)
format = " %+#D";
else if (fndecls)
format = N_("candidates are: %+#D");
else
format = N_("candidate is: %+#D");
error (format, fndecl);
}
}
else if (!COMPLETE_TYPE_P (ctype))
cxx_incomplete_type_error (function, ctype);
else
error ("no %q#D member function declared in class %qT",
function, ctype);
if (pushed_scope)
pop_scope (pushed_scope);
return error_mark_node;
}
/* DECL is a function with vague linkage. Remember it so that at the
end of the translation unit we can decide whether or not to emit
it. */
void
note_vague_linkage_fn (tree decl)
{
DECL_DEFER_OUTPUT (decl) = 1;
VEC_safe_push (tree, gc, deferred_fns, decl);
}
/* We have just processed the DECL, which is a static data member.
The other parameters are as for cp_finish_decl. */
void
finish_static_data_member_decl (tree decl,
tree init, bool init_const_expr_p,
tree asmspec_tree,
int flags)
{
DECL_CONTEXT (decl) = current_class_type;
/* We cannot call pushdecl here, because that would fill in the
TREE_CHAIN of our decl. Instead, we modify cp_finish_decl to do
the right thing, namely, to put this decl out straight away. */
if (! processing_template_decl)
VEC_safe_push (tree, gc, pending_statics, decl);
if (LOCAL_CLASS_P (current_class_type))
permerror (input_location, "local class %q#T shall not have static data member %q#D",
current_class_type, decl);
/* Static consts need not be initialized in the class definition. */
if (init != NULL_TREE && TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl)))
{
static int explained = 0;
error ("initializer invalid for static member with constructor");
if (!explained)
{
error ("(an out of class initialization is required)");
explained = 1;
}
init = NULL_TREE;
}
DECL_INITIAL (decl) = init;
DECL_IN_AGGR_P (decl) = 1;
if (TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE
&& TYPE_DOMAIN (TREE_TYPE (decl)) == NULL_TREE)
SET_VAR_HAD_UNKNOWN_BOUND (decl);
cp_finish_decl (decl, init, init_const_expr_p, asmspec_tree, flags);
}
/* DECLARATOR and DECLSPECS correspond to a class member. The other
parameters are as for cp_finish_decl. Return the DECL for the
class member declared. */
tree
grokfield (const cp_declarator *declarator,
cp_decl_specifier_seq *declspecs,
tree init, bool init_const_expr_p,
tree asmspec_tree,
tree attrlist)
{
tree value;
const char *asmspec = 0;
int flags = LOOKUP_ONLYCONVERTING;
tree name;
if (init
&& TREE_CODE (init) == TREE_LIST
&& TREE_VALUE (init) == error_mark_node
&& TREE_CHAIN (init) == NULL_TREE)
init = NULL_TREE;
value = grokdeclarator (declarator, declspecs, FIELD, init != 0, &attrlist);
if (! value || error_operand_p (value))
/* friend or constructor went bad. */
return error_mark_node;
if (TREE_CODE (value) == TYPE_DECL && init)
{
error ("typedef %qD is initialized (use decltype instead)", value);
init = NULL_TREE;
}
/* Pass friendly classes back. */
if (value == void_type_node)
return value;
/* Pass friend decls back. */
if ((TREE_CODE (value) == FUNCTION_DECL
|| TREE_CODE (value) == TEMPLATE_DECL)
&& DECL_CONTEXT (value) != current_class_type)
return value;
name = DECL_NAME (value);
if (name != NULL_TREE)
{
if (TREE_CODE (name) == TEMPLATE_ID_EXPR)
{
error ("explicit template argument list not allowed");
return error_mark_node;
}
if (IDENTIFIER_POINTER (name)[0] == '_'
&& ! strcmp (IDENTIFIER_POINTER (name), "_vptr"))
error ("member %qD conflicts with virtual function table field name",
value);
}
/* Stash away type declarations. */
if (TREE_CODE (value) == TYPE_DECL)
{
DECL_NONLOCAL (value) = 1;
DECL_CONTEXT (value) = current_class_type;
if (processing_template_decl)
value = push_template_decl (value);
if (attrlist)
{
int attrflags = 0;
/* If this is a typedef that names the class for linkage purposes
(7.1.3p8), apply any attributes directly to the type. */
if (TAGGED_TYPE_P (TREE_TYPE (value))
&& value == TYPE_NAME (TYPE_MAIN_VARIANT (TREE_TYPE (value))))
attrflags = ATTR_FLAG_TYPE_IN_PLACE;
cplus_decl_attributes (&value, attrlist, attrflags);
}
if (declspecs->specs[(int)ds_typedef]
&& TREE_TYPE (value) != error_mark_node
&& TYPE_NAME (TYPE_MAIN_VARIANT (TREE_TYPE (value))) != value)
cp_set_underlying_type (value);
return value;
}
if (DECL_IN_AGGR_P (value))
{
error ("%qD is already defined in %qT", value, DECL_CONTEXT (value));
return void_type_node;
}
if (asmspec_tree && asmspec_tree != error_mark_node)
asmspec = TREE_STRING_POINTER (asmspec_tree);
if (init)
{
if (TREE_CODE (value) == FUNCTION_DECL)
{
/* Initializers for functions are rejected early in the parser.
If we get here, it must be a pure specifier for a method. */
if (init == ridpointers[(int)RID_DELETE])
{
DECL_DELETED_FN (value) = 1;
DECL_DECLARED_INLINE_P (value) = 1;
DECL_INITIAL (value) = error_mark_node;
}
else if (init == ridpointers[(int)RID_DEFAULT])
{
if (defaultable_fn_check (value))
{
DECL_DEFAULTED_FN (value) = 1;
DECL_INITIALIZED_IN_CLASS_P (value) = 1;
DECL_DECLARED_INLINE_P (value) = 1;
}
}
else if (TREE_CODE (TREE_TYPE (value)) == METHOD_TYPE)
{
if (integer_zerop (init))
DECL_PURE_VIRTUAL_P (value) = 1;
else if (error_operand_p (init))
; /* An error has already been reported. */
else
error ("invalid initializer for member function %qD",
value);
}
else
{
gcc_assert (TREE_CODE (TREE_TYPE (value)) == FUNCTION_TYPE);
error ("initializer specified for static member function %qD",
value);
}
}
else if (pedantic && TREE_CODE (value) != VAR_DECL)
/* Already complained in grokdeclarator. */
init = NULL_TREE;
else if (!processing_template_decl)
{
if (TREE_CODE (init) == CONSTRUCTOR)
init = digest_init (TREE_TYPE (value), init);
else
init = integral_constant_value (init);
if (init != error_mark_node && !TREE_CONSTANT (init))
{
/* We can allow references to things that are effectively
static, since references are initialized with the
address. */
if (TREE_CODE (TREE_TYPE (value)) != REFERENCE_TYPE
|| (TREE_STATIC (init) == 0
&& (!DECL_P (init) || DECL_EXTERNAL (init) == 0)))
{
error ("field initializer is not constant");
init = error_mark_node;
}
}
}
}
if (processing_template_decl
&& (TREE_CODE (value) == VAR_DECL || TREE_CODE (value) == FUNCTION_DECL))
{
value = push_template_decl (value);
if (error_operand_p (value))
return error_mark_node;
}
if (attrlist)
cplus_decl_attributes (&value, attrlist, 0);
switch (TREE_CODE (value))
{
case VAR_DECL:
finish_static_data_member_decl (value, init, init_const_expr_p,
asmspec_tree, flags);
return value;
case FIELD_DECL:
if (asmspec)
error ("%<asm%> specifiers are not permitted on non-static data members");
if (DECL_INITIAL (value) == error_mark_node)
init = error_mark_node;
cp_finish_decl (value, init, /*init_const_expr_p=*/false,
NULL_TREE, flags);
DECL_INITIAL (value) = init;
DECL_IN_AGGR_P (value) = 1;
return value;
case FUNCTION_DECL:
if (asmspec)
set_user_assembler_name (value, asmspec);
cp_finish_decl (value,
/*init=*/NULL_TREE,
/*init_const_expr_p=*/false,
asmspec_tree, flags);
/* Pass friends back this way. */
if (DECL_FRIEND_P (value))
return void_type_node;
DECL_IN_AGGR_P (value) = 1;
return value;
default:
gcc_unreachable ();
}
return NULL_TREE;
}
/* Like `grokfield', but for bitfields.
WIDTH is non-NULL for bit fields only, and is an INTEGER_CST node. */
tree
grokbitfield (const cp_declarator *declarator,
cp_decl_specifier_seq *declspecs, tree width,
tree attrlist)
{
tree value = grokdeclarator (declarator, declspecs, BITFIELD, 0, &attrlist);
if (value == error_mark_node)
return NULL_TREE; /* friends went bad. */
/* Pass friendly classes back. */
if (TREE_CODE (value) == VOID_TYPE)
return void_type_node;
if (!INTEGRAL_OR_UNSCOPED_ENUMERATION_TYPE_P (TREE_TYPE (value))
&& (POINTER_TYPE_P (value)
|| !dependent_type_p (TREE_TYPE (value))))
{
error ("bit-field %qD with non-integral type", value);
return error_mark_node;
}
if (TREE_CODE (value) == TYPE_DECL)
{
error ("cannot declare %qD to be a bit-field type", value);
return NULL_TREE;
}
/* Usually, finish_struct_1 catches bitfields with invalid types.
But, in the case of bitfields with function type, we confuse
ourselves into thinking they are member functions, so we must
check here. */
if (TREE_CODE (value) == FUNCTION_DECL)
{
error ("cannot declare bit-field %qD with function type",
DECL_NAME (value));
return NULL_TREE;
}
if (DECL_IN_AGGR_P (value))
{
error ("%qD is already defined in the class %qT", value,
DECL_CONTEXT (value));
return void_type_node;
}
if (TREE_STATIC (value))
{
error ("static member %qD cannot be a bit-field", value);
return NULL_TREE;
}
cp_finish_decl (value, NULL_TREE, false, NULL_TREE, 0);
if (width != error_mark_node)
{
constant_expression_warning (width);
DECL_INITIAL (value) = width;
SET_DECL_C_BIT_FIELD (value);
}
DECL_IN_AGGR_P (value) = 1;
if (attrlist)
cplus_decl_attributes (&value, attrlist, /*flags=*/0);
return value;
}
/* Returns true iff ATTR is an attribute which needs to be applied at
instantiation time rather than template definition time. */
static bool
is_late_template_attribute (tree attr, tree decl)
{
tree name = TREE_PURPOSE (attr);
tree args = TREE_VALUE (attr);
const struct attribute_spec *spec = lookup_attribute_spec (name);
tree arg;
if (!spec)
/* Unknown attribute. */
return false;
/* Attribute weak handling wants to write out assembly right away. */
if (is_attribute_p ("weak", name))
return true;
/* If any of the arguments are dependent expressions, we can't evaluate
the attribute until instantiation time. */
for (arg = args; arg; arg = TREE_CHAIN (arg))
{
tree t = TREE_VALUE (arg);
/* If the first attribute argument is an identifier, only consider
second and following arguments. Attributes like mode, format,
cleanup and several target specific attributes aren't late
just because they have an IDENTIFIER_NODE as first argument. */
if (arg == args && TREE_CODE (t) == IDENTIFIER_NODE)
continue;
if (value_dependent_expression_p (t)
|| type_dependent_expression_p (t))
return true;
}
if (TREE_CODE (decl) == TYPE_DECL
|| TYPE_P (decl)
|| spec->type_required)
{
tree type = TYPE_P (decl) ? decl : TREE_TYPE (decl);
/* We can't apply any attributes to a completely unknown type until
instantiation time. */
enum tree_code code = TREE_CODE (type);
if (code == TEMPLATE_TYPE_PARM
|| code == BOUND_TEMPLATE_TEMPLATE_PARM
|| code == TYPENAME_TYPE)
return true;
/* Also defer most attributes on dependent types. This is not
necessary in all cases, but is the better default. */
else if (dependent_type_p (type)
/* But attribute visibility specifically works on
templates. */
&& !is_attribute_p ("visibility", name))
return true;
else
return false;
}
else
return false;
}
/* ATTR_P is a list of attributes. Remove any attributes which need to be
applied at instantiation time and return them. If IS_DEPENDENT is true,
the declaration itself is dependent, so all attributes should be applied
at instantiation time. */
static tree
splice_template_attributes (tree *attr_p, tree decl)
{
tree *p = attr_p;
tree late_attrs = NULL_TREE;
tree *q = &late_attrs;
if (!p)
return NULL_TREE;
for (; *p; )
{
if (is_late_template_attribute (*p, decl))
{
ATTR_IS_DEPENDENT (*p) = 1;
*q = *p;
*p = TREE_CHAIN (*p);
q = &TREE_CHAIN (*q);
*q = NULL_TREE;
}
else
p = &TREE_CHAIN (*p);
}
return late_attrs;
}
/* Remove any late attributes from the list in ATTR_P and attach them to
DECL_P. */
static void
save_template_attributes (tree *attr_p, tree *decl_p)
{
tree late_attrs = splice_template_attributes (attr_p, *decl_p);
tree *q;
tree old_attrs = NULL_TREE;
if (!late_attrs)
return;
if (DECL_P (*decl_p))
q = &DECL_ATTRIBUTES (*decl_p);
else
q = &TYPE_ATTRIBUTES (*decl_p);
old_attrs = *q;
/* Place the late attributes at the beginning of the attribute
list. */
TREE_CHAIN (tree_last (late_attrs)) = *q;
*q = late_attrs;
if (!DECL_P (*decl_p) && *decl_p == TYPE_MAIN_VARIANT (*decl_p))
{
/* We've added new attributes directly to the main variant, so
now we need to update all of the other variants to include
these new attributes. */
tree variant;
for (variant = TYPE_NEXT_VARIANT (*decl_p); variant;
variant = TYPE_NEXT_VARIANT (variant))
{
gcc_assert (TYPE_ATTRIBUTES (variant) == old_attrs);
TYPE_ATTRIBUTES (variant) = TYPE_ATTRIBUTES (*decl_p);
}
}
}
/* Like reconstruct_complex_type, but handle also template trees. */
tree
cp_reconstruct_complex_type (tree type, tree bottom)
{
tree inner, outer;
if (TREE_CODE (type) == POINTER_TYPE)
{
inner = cp_reconstruct_complex_type (TREE_TYPE (type), bottom);
outer = build_pointer_type_for_mode (inner, TYPE_MODE (type),
TYPE_REF_CAN_ALIAS_ALL (type));
}
else if (TREE_CODE (type) == REFERENCE_TYPE)
{
inner = cp_reconstruct_complex_type (TREE_TYPE (type), bottom);
outer = build_reference_type_for_mode (inner, TYPE_MODE (type),
TYPE_REF_CAN_ALIAS_ALL (type));
}
else if (TREE_CODE (type) == ARRAY_TYPE)
{
inner = cp_reconstruct_complex_type (TREE_TYPE (type), bottom);
outer = build_cplus_array_type (inner, TYPE_DOMAIN (type));
/* Don't call cp_build_qualified_type on ARRAY_TYPEs, the
element type qualification will be handled by the recursive
cp_reconstruct_complex_type call and cp_build_qualified_type
for ARRAY_TYPEs changes the element type. */
return outer;
}
else if (TREE_CODE (type) == FUNCTION_TYPE)
{
inner = cp_reconstruct_complex_type (TREE_TYPE (type), bottom);
outer = build_function_type (inner, TYPE_ARG_TYPES (type));
outer = apply_memfn_quals (outer, type_memfn_quals (type));
}
else if (TREE_CODE (type) == METHOD_TYPE)
{
inner = cp_reconstruct_complex_type (TREE_TYPE (type), bottom);
/* The build_method_type_directly() routine prepends 'this' to argument list,
so we must compensate by getting rid of it. */
outer
= build_method_type_directly
(TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (type))),
inner,
TREE_CHAIN (TYPE_ARG_TYPES (type)));
}
else if (TREE_CODE (type) == OFFSET_TYPE)
{
inner = cp_reconstruct_complex_type (TREE_TYPE (type), bottom);
outer = build_offset_type (TYPE_OFFSET_BASETYPE (type), inner);
}
else
return bottom;
if (TYPE_ATTRIBUTES (type))
outer = cp_build_type_attribute_variant (outer, TYPE_ATTRIBUTES (type));
return cp_build_qualified_type (outer, cp_type_quals (type));
}
/* Like decl_attributes, but handle C++ complexity. */
void
cplus_decl_attributes (tree *decl, tree attributes, int flags)
{
if (*decl == NULL_TREE || *decl == void_type_node
|| *decl == error_mark_node
|| attributes == NULL_TREE)
return;
if (processing_template_decl)
{
if (check_for_bare_parameter_packs (attributes))
return;
save_template_attributes (&attributes, decl);
if (attributes == NULL_TREE)
return;
}
if (TREE_CODE (*decl) == TEMPLATE_DECL)
decl = &DECL_TEMPLATE_RESULT (*decl);
decl_attributes (decl, attributes, flags);
if (TREE_CODE (*decl) == TYPE_DECL)
SET_IDENTIFIER_TYPE_VALUE (DECL_NAME (*decl), TREE_TYPE (*decl));
}
/* Walks through the namespace- or function-scope anonymous union
OBJECT, with the indicated TYPE, building appropriate VAR_DECLs.
Returns one of the fields for use in the mangled name. */
static tree
build_anon_union_vars (tree type, tree object)
{
tree main_decl = NULL_TREE;
tree field;
/* Rather than write the code to handle the non-union case,
just give an error. */
if (TREE_CODE (type) != UNION_TYPE)
error ("anonymous struct not inside named type");
for (field = TYPE_FIELDS (type);
field != NULL_TREE;
field = TREE_CHAIN (field))
{
tree decl;
tree ref;
if (DECL_ARTIFICIAL (field))
continue;
if (TREE_CODE (field) != FIELD_DECL)
{
permerror (input_location, "%q+#D invalid; an anonymous union can only "
"have non-static data members", field);
continue;
}
if (TREE_PRIVATE (field))
permerror (input_location, "private member %q+#D in anonymous union", field);
else if (TREE_PROTECTED (field))
permerror (input_location, "protected member %q+#D in anonymous union", field);
if (processing_template_decl)
ref = build_min_nt (COMPONENT_REF, object,
DECL_NAME (field), NULL_TREE);
else
ref = build_class_member_access_expr (object, field, NULL_TREE,
false, tf_warning_or_error);
if (DECL_NAME (field))
{
tree base;
decl = build_decl (input_location,
VAR_DECL, DECL_NAME (field), TREE_TYPE (field));
DECL_ANON_UNION_VAR_P (decl) = 1;
DECL_ARTIFICIAL (decl) = 1;
base = get_base_address (object);
TREE_PUBLIC (decl) = TREE_PUBLIC (base);
TREE_STATIC (decl) = TREE_STATIC (base);
DECL_EXTERNAL (decl) = DECL_EXTERNAL (base);
SET_DECL_VALUE_EXPR (decl, ref);
DECL_HAS_VALUE_EXPR_P (decl) = 1;
decl = pushdecl (decl);
}
else if (ANON_AGGR_TYPE_P (TREE_TYPE (field)))
decl = build_anon_union_vars (TREE_TYPE (field), ref);
else
decl = 0;
if (main_decl == NULL_TREE)
main_decl = decl;
}
return main_decl;
}
/* Finish off the processing of a UNION_TYPE structure. If the union is an
anonymous union, then all members must be laid out together. PUBLIC_P
is nonzero if this union is not declared static. */
void
finish_anon_union (tree anon_union_decl)
{
tree type;
tree main_decl;
bool public_p;
if (anon_union_decl == error_mark_node)
return;
type = TREE_TYPE (anon_union_decl);
public_p = TREE_PUBLIC (anon_union_decl);
/* The VAR_DECL's context is the same as the TYPE's context. */
DECL_CONTEXT (anon_union_decl) = DECL_CONTEXT (TYPE_NAME (type));
if (TYPE_FIELDS (type) == NULL_TREE)
return;
if (public_p)
{
error ("namespace-scope anonymous aggregates must be static");
return;
}
main_decl = build_anon_union_vars (type, anon_union_decl);
if (main_decl == error_mark_node)
return;
if (main_decl == NULL_TREE)
{
warning (0, "anonymous union with no members");
return;
}
if (!processing_template_decl)
{
/* Use main_decl to set the mangled name. */
DECL_NAME (anon_union_decl) = DECL_NAME (main_decl);
maybe_commonize_var (anon_union_decl);
mangle_decl (anon_union_decl);
DECL_NAME (anon_union_decl) = NULL_TREE;
}
pushdecl (anon_union_decl);
if (building_stmt_tree ()
&& at_function_scope_p ())
add_decl_expr (anon_union_decl);
else if (!processing_template_decl)
rest_of_decl_compilation (anon_union_decl,
toplevel_bindings_p (), at_eof);
}
/* Auxiliary functions to make type signatures for
`operator new' and `operator delete' correspond to
what compiler will be expecting. */
tree
coerce_new_type (tree type)
{
int e = 0;
tree args = TYPE_ARG_TYPES (type);
gcc_assert (TREE_CODE (type) == FUNCTION_TYPE);
if (!same_type_p (TREE_TYPE (type), ptr_type_node))
{
e = 1;
error ("%<operator new%> must return type %qT", ptr_type_node);
}
if (args && args != void_list_node)
{
if (TREE_PURPOSE (args))
{
/* [basic.stc.dynamic.allocation]
The first parameter shall not have an associated default
argument. */
error ("the first parameter of %<operator new%> cannot "
"have a default argument");
/* Throw away the default argument. */
TREE_PURPOSE (args) = NULL_TREE;
}
if (!same_type_p (TREE_VALUE (args), size_type_node))
{
e = 2;
args = TREE_CHAIN (args);
}
}
else
e = 2;
if (e == 2)
permerror (input_location, "%<operator new%> takes type %<size_t%> (%qT) "
"as first parameter", size_type_node);
switch (e)
{
case 2:
args = tree_cons (NULL_TREE, size_type_node, args);
/* Fall through. */
case 1:
type = build_exception_variant
(build_function_type (ptr_type_node, args),
TYPE_RAISES_EXCEPTIONS (type));
/* Fall through. */
default:;
}
return type;
}
tree
coerce_delete_type (tree type)
{
int e = 0;
tree args = TYPE_ARG_TYPES (type);
gcc_assert (TREE_CODE (type) == FUNCTION_TYPE);
if (!same_type_p (TREE_TYPE (type), void_type_node))
{
e = 1;
error ("%<operator delete%> must return type %qT", void_type_node);
}
if (!args || args == void_list_node
|| !same_type_p (TREE_VALUE (args), ptr_type_node))
{
e = 2;
if (args && args != void_list_node)
args = TREE_CHAIN (args);
error ("%<operator delete%> takes type %qT as first parameter",
ptr_type_node);
}
switch (e)
{
case 2:
args = tree_cons (NULL_TREE, ptr_type_node, args);
/* Fall through. */
case 1:
type = build_exception_variant
(build_function_type (void_type_node, args),
TYPE_RAISES_EXCEPTIONS (type));
/* Fall through. */
default:;
}
return type;
}
/* DECL is a VAR_DECL for a vtable: walk through the entries in the vtable
and mark them as needed. */
static void
mark_vtable_entries (tree decl)
{
tree fnaddr;
unsigned HOST_WIDE_INT idx;
FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (DECL_INITIAL (decl)),
idx, fnaddr)
{
tree fn;
STRIP_NOPS (fnaddr);
if (TREE_CODE (fnaddr) != ADDR_EXPR
&& TREE_CODE (fnaddr) != FDESC_EXPR)
/* This entry is an offset: a virtual base class offset, a
virtual call offset, an RTTI offset, etc. */
continue;
fn = TREE_OPERAND (fnaddr, 0);
TREE_ADDRESSABLE (fn) = 1;
/* When we don't have vcall offsets, we output thunks whenever
we output the vtables that contain them. With vcall offsets,
we know all the thunks we'll need when we emit a virtual
function, so we emit the thunks there instead. */
if (DECL_THUNK_P (fn))
use_thunk (fn, /*emit_p=*/0);
mark_used (fn);
}
}
/* Set DECL up to have the closest approximation of "initialized common"
linkage available. */
void
comdat_linkage (tree decl)
{
if (flag_weak)
make_decl_one_only (decl, cxx_comdat_group (decl));
else if (TREE_CODE (decl) == FUNCTION_DECL
|| (TREE_CODE (decl) == VAR_DECL && DECL_ARTIFICIAL (decl)))
/* We can just emit function and compiler-generated variables
statically; having multiple copies is (for the most part) only
a waste of space.
There are two correctness issues, however: the address of a
template instantiation with external linkage should be the
same, independent of what translation unit asks for the
address, and this will not hold when we emit multiple copies of
the function. However, there's little else we can do.
Also, by default, the typeinfo implementation assumes that
there will be only one copy of the string used as the name for
each type. Therefore, if weak symbols are unavailable, the
run-time library should perform a more conservative check; it
should perform a string comparison, rather than an address
comparison. */
TREE_PUBLIC (decl) = 0;
else
{
/* Static data member template instantiations, however, cannot
have multiple copies. */
if (DECL_INITIAL (decl) == 0
|| DECL_INITIAL (decl) == error_mark_node)
DECL_COMMON (decl) = 1;
else if (EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl)))
{
DECL_COMMON (decl) = 1;
DECL_INITIAL (decl) = error_mark_node;
}
else if (!DECL_EXPLICIT_INSTANTIATION (decl))
{
/* We can't do anything useful; leave vars for explicit
instantiation. */
DECL_EXTERNAL (decl) = 1;
DECL_NOT_REALLY_EXTERN (decl) = 0;
}
}
DECL_COMDAT (decl) = 1;
}
/* For win32 we also want to put explicit instantiations in
linkonce sections, so that they will be merged with implicit
instantiations; otherwise we get duplicate symbol errors.
For Darwin we do not want explicit instantiations to be
linkonce. */
void
maybe_make_one_only (tree decl)
{
/* We used to say that this was not necessary on targets that support weak
symbols, because the implicit instantiations will defer to the explicit
one. However, that's not actually the case in SVR4; a strong definition
after a weak one is an error. Also, not making explicit
instantiations one_only means that we can end up with two copies of
some template instantiations. */
if (! flag_weak)
return;
/* We can't set DECL_COMDAT on functions, or cp_finish_file will think
we can get away with not emitting them if they aren't used. We need
to for variables so that cp_finish_decl will update their linkage,
because their DECL_INITIAL may not have been set properly yet. */
if (!TARGET_WEAK_NOT_IN_ARCHIVE_TOC
|| (! DECL_EXPLICIT_INSTANTIATION (decl)
&& ! DECL_TEMPLATE_SPECIALIZATION (decl)))
{
make_decl_one_only (decl, cxx_comdat_group (decl));
if (TREE_CODE (decl) == VAR_DECL)
{
DECL_COMDAT (decl) = 1;
/* Mark it needed so we don't forget to emit it. */
mark_decl_referenced (decl);
}
}
}
/* Returns true iff DECL, a FUNCTION_DECL or VAR_DECL, has vague linkage.
This predicate will give the right answer during parsing of the
function, which other tests may not. */
bool
vague_linkage_p (tree decl)
{
/* Unfortunately, import_export_decl has not always been called
before the function is processed, so we cannot simply check
DECL_COMDAT. */
return (DECL_COMDAT (decl)
|| (((TREE_CODE (decl) == FUNCTION_DECL
&& DECL_DECLARED_INLINE_P (decl))
|| (DECL_LANG_SPECIFIC (decl)
&& DECL_TEMPLATE_INSTANTIATION (decl)))
&& TREE_PUBLIC (decl)));
}
/* Determine whether or not we want to specifically import or export CTYPE,
using various heuristics. */
static void
import_export_class (tree ctype)
{
/* -1 for imported, 1 for exported. */
int import_export = 0;
/* It only makes sense to call this function at EOF. The reason is
that this function looks at whether or not the first non-inline
non-abstract virtual member function has been defined in this
translation unit. But, we can't possibly know that until we've
seen the entire translation unit. */
gcc_assert (at_eof);
if (CLASSTYPE_INTERFACE_KNOWN (ctype))
return;
/* If MULTIPLE_SYMBOL_SPACES is set and we saw a #pragma interface,
we will have CLASSTYPE_INTERFACE_ONLY set but not
CLASSTYPE_INTERFACE_KNOWN. In that case, we don't want to use this
heuristic because someone will supply a #pragma implementation
elsewhere, and deducing it here would produce a conflict. */
if (CLASSTYPE_INTERFACE_ONLY (ctype))
return;
if (lookup_attribute ("dllimport", TYPE_ATTRIBUTES (ctype)))
import_export = -1;
else if (lookup_attribute ("dllexport", TYPE_ATTRIBUTES (ctype)))
import_export = 1;
else if (CLASSTYPE_IMPLICIT_INSTANTIATION (ctype)
&& !flag_implicit_templates)
/* For a template class, without -fimplicit-templates, check the
repository. If the virtual table is assigned to this
translation unit, then export the class; otherwise, import
it. */
import_export = repo_export_class_p (ctype) ? 1 : -1;
else if (TYPE_POLYMORPHIC_P (ctype))
{
/* The ABI specifies that the virtual table and associated
information are emitted with the key method, if any. */
tree method = CLASSTYPE_KEY_METHOD (ctype);
/* If weak symbol support is not available, then we must be
careful not to emit the vtable when the key function is
inline. An inline function can be defined in multiple
translation units. If we were to emit the vtable in each
translation unit containing a definition, we would get
multiple definition errors at link-time. */
if (method && (flag_weak || ! DECL_DECLARED_INLINE_P (method)))
import_export = (DECL_REALLY_EXTERN (method) ? -1 : 1);
}
/* When MULTIPLE_SYMBOL_SPACES is set, we cannot count on seeing
a definition anywhere else. */
if (MULTIPLE_SYMBOL_SPACES && import_export == -1)
import_export = 0;
/* Allow back ends the chance to overrule the decision. */
if (targetm.cxx.import_export_class)
import_export = targetm.cxx.import_export_class (ctype, import_export);
if (import_export)
{
SET_CLASSTYPE_INTERFACE_KNOWN (ctype);
CLASSTYPE_INTERFACE_ONLY (ctype) = (import_export < 0);
}
}
/* Return true if VAR has already been provided to the back end; in that
case VAR should not be modified further by the front end. */
static bool
var_finalized_p (tree var)
{
return varpool_node (var)->finalized;
}
/* DECL is a VAR_DECL or FUNCTION_DECL which, for whatever reason,
must be emitted in this translation unit. Mark it as such. */
void
mark_needed (tree decl)
{
/* It's possible that we no longer need to set
TREE_SYMBOL_REFERENCED here directly, but doing so is
harmless. */
TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)) = 1;
mark_decl_referenced (decl);
}
/* DECL is either a FUNCTION_DECL or a VAR_DECL. This function
returns true if a definition of this entity should be provided in
this object file. Callers use this function to determine whether
or not to let the back end know that a definition of DECL is
available in this translation unit. */
bool
decl_needed_p (tree decl)
{
gcc_assert (TREE_CODE (decl) == VAR_DECL
|| TREE_CODE (decl) == FUNCTION_DECL);
/* This function should only be called at the end of the translation
unit. We cannot be sure of whether or not something will be
COMDAT until that point. */
gcc_assert (at_eof);
/* All entities with external linkage that are not COMDAT should be
emitted; they may be referred to from other object files. */
if (TREE_PUBLIC (decl) && !DECL_COMDAT (decl))
return true;
/* If this entity was used, let the back end see it; it will decide
whether or not to emit it into the object file. */
if (TREE_USED (decl)
|| (DECL_ASSEMBLER_NAME_SET_P (decl)
&& TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
return true;
/* Functions marked "dllexport" must be emitted so that they are
visible to other DLLs. */
if (lookup_attribute ("dllexport", DECL_ATTRIBUTES (decl)))
return true;
/* Otherwise, DECL does not need to be emitted -- yet. A subsequent
reference to DECL might cause it to be emitted later. */
return false;
}
/* If necessary, write out the vtables for the dynamic class CTYPE.
Returns true if any vtables were emitted. */
static bool
maybe_emit_vtables (tree ctype)
{
tree vtbl;
tree primary_vtbl;
int needed = 0;
/* If the vtables for this class have already been emitted there is
nothing more to do. */
primary_vtbl = CLASSTYPE_VTABLES (ctype);
if (var_finalized_p (primary_vtbl))
return false;
/* Ignore dummy vtables made by get_vtable_decl. */
if (TREE_TYPE (primary_vtbl) == void_type_node)
return false;
/* On some targets, we cannot determine the key method until the end
of the translation unit -- which is when this function is
called. */
if (!targetm.cxx.key_method_may_be_inline ())
determine_key_method (ctype);
/* See if any of the vtables are needed. */
for (vtbl = CLASSTYPE_VTABLES (ctype); vtbl; vtbl = TREE_CHAIN (vtbl))
{
import_export_decl (vtbl);
if (DECL_NOT_REALLY_EXTERN (vtbl) && decl_needed_p (vtbl))
needed = 1;
}
if (!needed)
{
/* If the references to this class' vtables are optimized away,
still emit the appropriate debugging information. See
dfs_debug_mark. */
if (DECL_COMDAT (primary_vtbl)
&& CLASSTYPE_DEBUG_REQUESTED (ctype))
note_debug_info_needed (ctype);
return false;
}
/* The ABI requires that we emit all of the vtables if we emit any
of them. */
for (vtbl = CLASSTYPE_VTABLES (ctype); vtbl; vtbl = TREE_CHAIN (vtbl))
{
/* Mark entities references from the virtual table as used. */
mark_vtable_entries (vtbl);
if (TREE_TYPE (DECL_INITIAL (vtbl)) == 0)
{
tree expr = store_init_value (vtbl, DECL_INITIAL (vtbl), LOOKUP_NORMAL);
/* It had better be all done at compile-time. */
gcc_assert (!expr);
}
/* Write it out. */
DECL_EXTERNAL (vtbl) = 0;
rest_of_decl_compilation (vtbl, 1, 1);
/* Because we're only doing syntax-checking, we'll never end up
actually marking the variable as written. */
if (flag_syntax_only)
TREE_ASM_WRITTEN (vtbl) = 1;
}
/* Since we're writing out the vtable here, also write the debug
info. */
note_debug_info_needed (ctype);
return true;
}
/* A special return value from type_visibility meaning internal
linkage. */
enum { VISIBILITY_ANON = VISIBILITY_INTERNAL+1 };
/* walk_tree helper function for type_visibility. */
static tree
min_vis_r (tree *tp, int *walk_subtrees, void *data)
{
int *vis_p = (int *)data;
if (! TYPE_P (*tp))
{
*walk_subtrees = 0;
}
else if (CLASS_TYPE_P (*tp))
{
if (!TREE_PUBLIC (TYPE_MAIN_DECL (*tp)))
{
*vis_p = VISIBILITY_ANON;
return *tp;
}
else if (CLASSTYPE_VISIBILITY (*tp) > *vis_p)
*vis_p = CLASSTYPE_VISIBILITY (*tp);
}
return NULL;
}
/* Returns the visibility of TYPE, which is the minimum visibility of its
component types. */
static int
type_visibility (tree type)
{
int vis = VISIBILITY_DEFAULT;
cp_walk_tree_without_duplicates (&type, min_vis_r, &vis);
return vis;
}
/* Limit the visibility of DECL to VISIBILITY, if not explicitly
specified (or if VISIBILITY is static). */
static bool
constrain_visibility (tree decl, int visibility)
{
if (visibility == VISIBILITY_ANON)
{
/* extern "C" declarations aren't affected by the anonymous
namespace. */
if (!DECL_EXTERN_C_P (decl))
{
TREE_PUBLIC (decl) = 0;
DECL_WEAK (decl) = 0;
DECL_COMMON (decl) = 0;
DECL_COMDAT_GROUP (decl) = NULL_TREE;
DECL_INTERFACE_KNOWN (decl) = 1;
if (DECL_LANG_SPECIFIC (decl))
DECL_NOT_REALLY_EXTERN (decl) = 1;
}
}
else if (visibility > DECL_VISIBILITY (decl)
&& !DECL_VISIBILITY_SPECIFIED (decl))
{
DECL_VISIBILITY (decl) = (enum symbol_visibility) visibility;
return true;
}
return false;
}
/* Constrain the visibility of DECL based on the visibility of its template
arguments. */
static void
constrain_visibility_for_template (tree decl, tree targs)
{
/* If this is a template instantiation, check the innermost
template args for visibility constraints. The outer template
args are covered by the class check. */
tree args = INNERMOST_TEMPLATE_ARGS (targs);
int i;
for (i = TREE_VEC_LENGTH (args); i > 0; --i)
{
int vis = 0;
tree arg = TREE_VEC_ELT (args, i-1);
if (TYPE_P (arg))
vis = type_visibility (arg);
else if (TREE_TYPE (arg) && POINTER_TYPE_P (TREE_TYPE (arg)))
{
STRIP_NOPS (arg);
if (TREE_CODE (arg) == ADDR_EXPR)
arg = TREE_OPERAND (arg, 0);
if (TREE_CODE (arg) == VAR_DECL
|| TREE_CODE (arg) == FUNCTION_DECL)
{
if (! TREE_PUBLIC (arg))
vis = VISIBILITY_ANON;
else
vis = DECL_VISIBILITY (arg);
}
}
if (vis)
constrain_visibility (decl, vis);
}
}
/* Like c_determine_visibility, but with additional C++-specific
behavior.
Function-scope entities can rely on the function's visibility because
it is set in start_preparsed_function.
Class-scope entities cannot rely on the class's visibility until the end
of the enclosing class definition.
Note that because namespaces have multiple independent definitions,
namespace visibility is handled elsewhere using the #pragma visibility
machinery rather than by decorating the namespace declaration.
The goal is for constraints from the type to give a diagnostic, and
other constraints to be applied silently. */
void
determine_visibility (tree decl)
{
tree class_type = NULL_TREE;
bool use_template;
bool orig_visibility_specified;
enum symbol_visibility orig_visibility;
/* Remember that all decls get VISIBILITY_DEFAULT when built. */
/* Only relevant for names with external linkage. */
if (!TREE_PUBLIC (decl))
return;
/* Cloned constructors and destructors get the same visibility as
the underlying function. That should be set up in
maybe_clone_body. */
gcc_assert (!DECL_CLONED_FUNCTION_P (decl));
orig_visibility_specified = DECL_VISIBILITY_SPECIFIED (decl);
orig_visibility = DECL_VISIBILITY (decl);
if (TREE_CODE (decl) == TYPE_DECL)
{
if (CLASS_TYPE_P (TREE_TYPE (decl)))
use_template = CLASSTYPE_USE_TEMPLATE (TREE_TYPE (decl));
else if (TYPE_TEMPLATE_INFO (TREE_TYPE (decl)))
use_template = 1;
else
use_template = 0;
}
else if (DECL_LANG_SPECIFIC (decl))
use_template = DECL_USE_TEMPLATE (decl);
else
use_template = 0;
/* If DECL is a member of a class, visibility specifiers on the
class can influence the visibility of the DECL. */
if (DECL_CLASS_SCOPE_P (decl))
class_type = DECL_CONTEXT (decl);
else
{
/* Not a class member. */
/* Virtual tables have DECL_CONTEXT set to their associated class,
so they are automatically handled above. */
gcc_assert (TREE_CODE (decl) != VAR_DECL
|| !DECL_VTABLE_OR_VTT_P (decl));
if (DECL_FUNCTION_SCOPE_P (decl) && ! DECL_VISIBILITY_SPECIFIED (decl))
{
/* Local statics and classes get the visibility of their
containing function by default, except that
-fvisibility-inlines-hidden doesn't affect them. */
tree fn = DECL_CONTEXT (decl);
if (DECL_VISIBILITY_SPECIFIED (fn) || ! DECL_CLASS_SCOPE_P (fn))
{
DECL_VISIBILITY (decl) = DECL_VISIBILITY (fn);
DECL_VISIBILITY_SPECIFIED (decl) =
DECL_VISIBILITY_SPECIFIED (fn);
}
else
determine_visibility_from_class (decl, DECL_CONTEXT (fn));
/* Local classes in templates have CLASSTYPE_USE_TEMPLATE set,
but have no TEMPLATE_INFO, so don't try to check it. */
use_template = 0;
}
else if (TREE_CODE (decl) == VAR_DECL && DECL_TINFO_P (decl)
&& flag_visibility_ms_compat)
{
/* Under -fvisibility-ms-compat, types are visible by default,
even though their contents aren't. */
tree underlying_type = TREE_TYPE (DECL_NAME (decl));
int underlying_vis = type_visibility (underlying_type);
if (underlying_vis == VISIBILITY_ANON
|| CLASSTYPE_VISIBILITY_SPECIFIED (underlying_type))
constrain_visibility (decl, underlying_vis);
else
DECL_VISIBILITY (decl) = VISIBILITY_DEFAULT;
}
else if (TREE_CODE (decl) == VAR_DECL && DECL_TINFO_P (decl))
{
/* tinfo visibility is based on the type it's for. */
constrain_visibility
(decl, type_visibility (TREE_TYPE (DECL_NAME (decl))));
/* Give the target a chance to override the visibility associated
with DECL. */
if (TREE_PUBLIC (decl)
&& !DECL_REALLY_EXTERN (decl)
&& CLASS_TYPE_P (TREE_TYPE (DECL_NAME (decl)))
&& !CLASSTYPE_VISIBILITY_SPECIFIED (TREE_TYPE (DECL_NAME (decl))))
targetm.cxx.determine_class_data_visibility (decl);
}
else if (use_template)
/* Template instantiations and specializations get visibility based
on their template unless they override it with an attribute. */;
else if (! DECL_VISIBILITY_SPECIFIED (decl))
{
/* Set default visibility to whatever the user supplied with
#pragma GCC visibility or a namespace visibility attribute. */
DECL_VISIBILITY (decl) = default_visibility;
DECL_VISIBILITY_SPECIFIED (decl) = visibility_options.inpragma;
}
}
if (use_template)
{
/* If the specialization doesn't specify visibility, use the
visibility from the template. */
tree tinfo = (TREE_CODE (decl) == TYPE_DECL
? TYPE_TEMPLATE_INFO (TREE_TYPE (decl))
: DECL_TEMPLATE_INFO (decl));
tree args = TI_ARGS (tinfo);
if (args != error_mark_node)
{
int depth = TMPL_ARGS_DEPTH (args);
tree pattern = DECL_TEMPLATE_RESULT (TI_TEMPLATE (tinfo));
if (!DECL_VISIBILITY_SPECIFIED (decl))
{
DECL_VISIBILITY (decl) = DECL_VISIBILITY (pattern);
DECL_VISIBILITY_SPECIFIED (decl)
= DECL_VISIBILITY_SPECIFIED (pattern);
}
/* FIXME should TMPL_ARGS_DEPTH really return 1 for null input? */
if (args && depth > template_class_depth (class_type))
/* Limit visibility based on its template arguments. */
constrain_visibility_for_template (decl, args);
}
}
if (class_type)
determine_visibility_from_class (decl, class_type);
if (decl_anon_ns_mem_p (decl))
/* Names in an anonymous namespace get internal linkage.
This might change once we implement export. */
constrain_visibility (decl, VISIBILITY_ANON);
else if (TREE_CODE (decl) != TYPE_DECL)
{
/* Propagate anonymity from type to decl. */
int tvis = type_visibility (TREE_TYPE (decl));
if (tvis == VISIBILITY_ANON
|| ! DECL_VISIBILITY_SPECIFIED (decl))
constrain_visibility (decl, tvis);
}
else if (no_linkage_check (TREE_TYPE (decl), /*relaxed_p=*/true))
/* DR 757: A type without linkage shall not be used as the type of a
variable or function with linkage, unless
o the variable or function has extern "C" linkage (7.5 [dcl.link]), or
o the variable or function is not used (3.2 [basic.def.odr]) or is
defined in the same translation unit.
Since non-extern "C" decls need to be defined in the same
translation unit, we can make the type internal. */
constrain_visibility (decl, VISIBILITY_ANON);
/* If visibility changed and DECL already has DECL_RTL, ensure
symbol flags are updated. */
if ((DECL_VISIBILITY (decl) != orig_visibility
|| DECL_VISIBILITY_SPECIFIED (decl) != orig_visibility_specified)
&& ((TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl))
|| TREE_CODE (decl) == FUNCTION_DECL)
&& DECL_RTL_SET_P (decl))
make_decl_rtl (decl);
}
/* By default, static data members and function members receive
the visibility of their containing class. */
static void
determine_visibility_from_class (tree decl, tree class_type)
{
if (DECL_VISIBILITY_SPECIFIED (decl))
return;
if (visibility_options.inlines_hidden
/* Don't do this for inline templates; specializations might not be
inline, and we don't want them to inherit the hidden
visibility. We'll set it here for all inline instantiations. */
&& !processing_template_decl
&& TREE_CODE (decl) == FUNCTION_DECL
&& DECL_DECLARED_INLINE_P (decl)
&& (! DECL_LANG_SPECIFIC (decl)
|| ! DECL_EXPLICIT_INSTANTIATION (decl)))
DECL_VISIBILITY (decl) = VISIBILITY_HIDDEN;
else
{
/* Default to the class visibility. */
DECL_VISIBILITY (decl) = CLASSTYPE_VISIBILITY (class_type);
DECL_VISIBILITY_SPECIFIED (decl)
= CLASSTYPE_VISIBILITY_SPECIFIED (class_type);
}
/* Give the target a chance to override the visibility associated
with DECL. */
if (TREE_CODE (decl) == VAR_DECL
&& (DECL_TINFO_P (decl)
|| (DECL_VTABLE_OR_VTT_P (decl)
/* Construction virtual tables are not exported because
they cannot be referred to from other object files;
their name is not standardized by the ABI. */
&& !DECL_CONSTRUCTION_VTABLE_P (decl)))
&& TREE_PUBLIC (decl)
&& !DECL_REALLY_EXTERN (decl)
&& !CLASSTYPE_VISIBILITY_SPECIFIED (class_type))
targetm.cxx.determine_class_data_visibility (decl);
}
/* Constrain the visibility of a class TYPE based on the visibility of its
field types. Warn if any fields require lesser visibility. */
void
constrain_class_visibility (tree type)
{
tree binfo;
tree t;
int i;
int vis = type_visibility (type);
if (vis == VISIBILITY_ANON
|| DECL_IN_SYSTEM_HEADER (TYPE_MAIN_DECL (type)))
return;
/* Don't warn about visibility if the class has explicit visibility. */
if (CLASSTYPE_VISIBILITY_SPECIFIED (type))
vis = VISIBILITY_INTERNAL;
for (t = TYPE_FIELDS (type); t; t = TREE_CHAIN (t))
if (TREE_CODE (t) == FIELD_DECL && TREE_TYPE (t) != error_mark_node)
{
tree ftype = strip_pointer_or_array_types (TREE_TYPE (t));
int subvis = type_visibility (ftype);
if (subvis == VISIBILITY_ANON)
{
if (!in_main_input_context ())
warning (0, "\
%qT has a field %qD whose type uses the anonymous namespace",
type, t);
}
else if (MAYBE_CLASS_TYPE_P (ftype)
&& vis < VISIBILITY_HIDDEN
&& subvis >= VISIBILITY_HIDDEN)
warning (OPT_Wattributes, "\
%qT declared with greater visibility than the type of its field %qD",
type, t);
}
binfo = TYPE_BINFO (type);
for (i = 0; BINFO_BASE_ITERATE (binfo, i, t); ++i)
{
int subvis = type_visibility (TREE_TYPE (t));
if (subvis == VISIBILITY_ANON)
{
if (!in_main_input_context())
warning (0, "\
%qT has a base %qT whose type uses the anonymous namespace",
type, TREE_TYPE (t));
}
else if (vis < VISIBILITY_HIDDEN
&& subvis >= VISIBILITY_HIDDEN)
warning (OPT_Wattributes, "\
%qT declared with greater visibility than its base %qT",
type, TREE_TYPE (t));
}
}
/* DECL is a FUNCTION_DECL or VAR_DECL. If the object file linkage
for DECL has not already been determined, do so now by setting
DECL_EXTERNAL, DECL_COMDAT and other related flags. Until this
function is called entities with vague linkage whose definitions
are available must have TREE_PUBLIC set.
If this function decides to place DECL in COMDAT, it will set
appropriate flags -- but will not clear DECL_EXTERNAL. It is up to
the caller to decide whether or not to clear DECL_EXTERNAL. Some
callers defer that decision until it is clear that DECL is actually
required. */
void
import_export_decl (tree decl)
{
int emit_p;
bool comdat_p;
bool import_p;
tree class_type = NULL_TREE;
if (DECL_INTERFACE_KNOWN (decl))
return;
/* We cannot determine what linkage to give to an entity with vague
linkage until the end of the file. For example, a virtual table
for a class will be defined if and only if the key method is
defined in this translation unit. As a further example, consider
that when compiling a translation unit that uses PCH file with
"-frepo" it would be incorrect to make decisions about what
entities to emit when building the PCH; those decisions must be
delayed until the repository information has been processed. */
gcc_assert (at_eof);
/* Object file linkage for explicit instantiations is handled in
mark_decl_instantiated. For static variables in functions with
vague linkage, maybe_commonize_var is used.
Therefore, the only declarations that should be provided to this
function are those with external linkage that are:
* implicit instantiations of function templates
* inline function
* implicit instantiations of static data members of class
templates
* virtual tables
* typeinfo objects
Furthermore, all entities that reach this point must have a
definition available in this translation unit.
The following assertions check these conditions. */
gcc_assert (TREE_CODE (decl) == FUNCTION_DECL
|| TREE_CODE (decl) == VAR_DECL);
/* Any code that creates entities with TREE_PUBLIC cleared should
also set DECL_INTERFACE_KNOWN. */
gcc_assert (TREE_PUBLIC (decl));
if (TREE_CODE (decl) == FUNCTION_DECL)
gcc_assert (DECL_IMPLICIT_INSTANTIATION (decl)
|| DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION (decl)
|| DECL_DECLARED_INLINE_P (decl));
else
gcc_assert (DECL_IMPLICIT_INSTANTIATION (decl)
|| DECL_VTABLE_OR_VTT_P (decl)
|| DECL_TINFO_P (decl));
/* Check that a definition of DECL is available in this translation
unit. */
gcc_assert (!DECL_REALLY_EXTERN (decl));
/* Assume that DECL will not have COMDAT linkage. */
comdat_p = false;
/* Assume that DECL will not be imported into this translation
unit. */
import_p = false;
/* See if the repository tells us whether or not to emit DECL in
this translation unit. */
emit_p = repo_emit_p (decl);
if (emit_p == 0)
import_p = true;
else if (emit_p == 1)
{
/* The repository indicates that this entity should be defined
here. Make sure the back end honors that request. */
if (TREE_CODE (decl) == VAR_DECL)
mark_needed (decl);
else if (DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (decl)
|| DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P (decl))
{
tree clone;
FOR_EACH_CLONE (clone, decl)
mark_needed (clone);
}
else
mark_needed (decl);
/* Output the definition as an ordinary strong definition. */
DECL_EXTERNAL (decl) = 0;
DECL_INTERFACE_KNOWN (decl) = 1;
return;
}
if (import_p)
/* We have already decided what to do with this DECL; there is no
need to check anything further. */
;
else if (TREE_CODE (decl) == VAR_DECL && DECL_VTABLE_OR_VTT_P (decl))
{
class_type = DECL_CONTEXT (decl);
import_export_class (class_type);
if (TYPE_FOR_JAVA (class_type))
import_p = true;
else if (CLASSTYPE_INTERFACE_KNOWN (class_type)
&& CLASSTYPE_INTERFACE_ONLY (class_type))
import_p = true;
else if ((!flag_weak || TARGET_WEAK_NOT_IN_ARCHIVE_TOC)
&& !CLASSTYPE_USE_TEMPLATE (class_type)
&& CLASSTYPE_KEY_METHOD (class_type)
&& !DECL_DECLARED_INLINE_P (CLASSTYPE_KEY_METHOD (class_type)))
/* The ABI requires that all virtual tables be emitted with
COMDAT linkage. However, on systems where COMDAT symbols
don't show up in the table of contents for a static
archive, or on systems without weak symbols (where we
approximate COMDAT linkage by using internal linkage), the
linker will report errors about undefined symbols because
it will not see the virtual table definition. Therefore,
in the case that we know that the virtual table will be
emitted in only one translation unit, we make the virtual
table an ordinary definition with external linkage. */
DECL_EXTERNAL (decl) = 0;
else if (CLASSTYPE_INTERFACE_KNOWN (class_type))
{
/* CLASS_TYPE is being exported from this translation unit,
so DECL should be defined here. */
if (!flag_weak && CLASSTYPE_EXPLICIT_INSTANTIATION (class_type))
/* If a class is declared in a header with the "extern
template" extension, then it will not be instantiated,
even in translation units that would normally require
it. Often such classes are explicitly instantiated in
one translation unit. Therefore, the explicit
instantiation must be made visible to other translation
units. */
DECL_EXTERNAL (decl) = 0;
else
{
/* The generic C++ ABI says that class data is always
COMDAT, even if there is a key function. Some
variants (e.g., the ARM EABI) says that class data
only has COMDAT linkage if the class data might be
emitted in more than one translation unit. When the
key method can be inline and is inline, we still have
to arrange for comdat even though
class_data_always_comdat is false. */
if (!CLASSTYPE_KEY_METHOD (class_type)
|| DECL_DECLARED_INLINE_P (CLASSTYPE_KEY_METHOD (class_type))
|| targetm.cxx.class_data_always_comdat ())
{
/* The ABI requires COMDAT linkage. Normally, we
only emit COMDAT things when they are needed;
make sure that we realize that this entity is
indeed needed. */
comdat_p = true;
mark_needed (decl);
}
}
}
else if (!flag_implicit_templates
&& CLASSTYPE_IMPLICIT_INSTANTIATION (class_type))
import_p = true;
else
comdat_p = true;
}
else if (TREE_CODE (decl) == VAR_DECL && DECL_TINFO_P (decl))
{
tree type = TREE_TYPE (DECL_NAME (decl));
if (CLASS_TYPE_P (type))
{
class_type = type;
import_export_class (type);
if (CLASSTYPE_INTERFACE_KNOWN (type)
&& TYPE_POLYMORPHIC_P (type)
&& CLASSTYPE_INTERFACE_ONLY (type)
/* If -fno-rtti was specified, then we cannot be sure
that RTTI information will be emitted with the
virtual table of the class, so we must emit it
wherever it is used. */
&& flag_rtti)
import_p = true;
else
{
if (CLASSTYPE_INTERFACE_KNOWN (type)
&& !CLASSTYPE_INTERFACE_ONLY (type))
{
comdat_p = (targetm.cxx.class_data_always_comdat ()
|| (CLASSTYPE_KEY_METHOD (type)
&& DECL_DECLARED_INLINE_P (CLASSTYPE_KEY_METHOD (type))));
mark_needed (decl);
if (!flag_weak)
{
comdat_p = false;
DECL_EXTERNAL (decl) = 0;
}
}
else
comdat_p = true;
}
}
else
comdat_p = true;
}
else if (DECL_TEMPLATE_INSTANTIATION (decl)
|| DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION (decl))
{
/* DECL is an implicit instantiation of a function or static
data member. */
if ((flag_implicit_templates
&& !flag_use_repository)
|| (flag_implicit_inline_templates
&& TREE_CODE (decl) == FUNCTION_DECL
&& DECL_DECLARED_INLINE_P (decl)))
comdat_p = true;
else
/* If we are not implicitly generating templates, then mark
this entity as undefined in this translation unit. */
import_p = true;
}
else if (DECL_FUNCTION_MEMBER_P (decl))
{
if (!DECL_DECLARED_INLINE_P (decl))
{
tree ctype = DECL_CONTEXT (decl);
import_export_class (ctype);
if (CLASSTYPE_INTERFACE_KNOWN (ctype))
{
DECL_NOT_REALLY_EXTERN (decl)
= ! (CLASSTYPE_INTERFACE_ONLY (ctype)
|| (DECL_DECLARED_INLINE_P (decl)
&& ! flag_implement_inlines
&& !DECL_VINDEX (decl)));
if (!DECL_NOT_REALLY_EXTERN (decl))
DECL_EXTERNAL (decl) = 1;
/* Always make artificials weak. */
if (DECL_ARTIFICIAL (decl) && flag_weak)
comdat_p = true;
else
maybe_make_one_only (decl);
}
}
else
comdat_p = true;
}
else
comdat_p = true;
if (import_p)
{
/* If we are importing DECL into this translation unit, mark is
an undefined here. */
DECL_EXTERNAL (decl) = 1;
DECL_NOT_REALLY_EXTERN (decl) = 0;
}
else if (comdat_p)
{
/* If we decided to put DECL in COMDAT, mark it accordingly at
this point. */
comdat_linkage (decl);
}
DECL_INTERFACE_KNOWN (decl) = 1;
}
/* Return an expression that performs the destruction of DECL, which
must be a VAR_DECL whose type has a non-trivial destructor, or is
an array whose (innermost) elements have a non-trivial destructor. */
tree
build_cleanup (tree decl)
{
tree temp;
tree type = TREE_TYPE (decl);
/* This function should only be called for declarations that really
require cleanups. */
gcc_assert (!TYPE_HAS_TRIVIAL_DESTRUCTOR (type));
/* Treat all objects with destructors as used; the destructor may do
something substantive. */
mark_used (decl);
if (TREE_CODE (type) == ARRAY_TYPE)
temp = decl;
else
temp = build_address (decl);
temp = build_delete (TREE_TYPE (temp), temp,
sfk_complete_destructor,
LOOKUP_NORMAL|LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR, 0);
return temp;
}
/* Returns the initialization guard variable for the variable DECL,
which has static storage duration. */
tree
get_guard (tree decl)
{
tree sname;
tree guard;
sname = mangle_guard_variable (decl);
guard = IDENTIFIER_GLOBAL_VALUE (sname);
if (! guard)
{
tree guard_type;
/* We use a type that is big enough to contain a mutex as well
as an integer counter. */
guard_type = targetm.cxx.guard_type ();
guard = build_decl (DECL_SOURCE_LOCATION (decl),
VAR_DECL, sname, guard_type);
/* The guard should have the same linkage as what it guards. */
TREE_PUBLIC (guard) = TREE_PUBLIC (decl);
TREE_STATIC (guard) = TREE_STATIC (decl);
DECL_COMMON (guard) = DECL_COMMON (decl);
DECL_COMDAT (guard) = DECL_COMDAT (decl);
if (DECL_ONE_ONLY (decl))
make_decl_one_only (guard, cxx_comdat_group (guard));
if (TREE_PUBLIC (decl))
DECL_WEAK (guard) = DECL_WEAK (decl);
DECL_VISIBILITY (guard) = DECL_VISIBILITY (decl);
DECL_VISIBILITY_SPECIFIED (guard) = DECL_VISIBILITY_SPECIFIED (decl);
DECL_ARTIFICIAL (guard) = 1;
DECL_IGNORED_P (guard) = 1;
TREE_USED (guard) = 1;
pushdecl_top_level_and_finish (guard, NULL_TREE);
}
return guard;
}
/* Return those bits of the GUARD variable that should be set when the
guarded entity is actually initialized. */
static tree
get_guard_bits (tree guard)
{
if (!targetm.cxx.guard_mask_bit ())
{
/* We only set the first byte of the guard, in order to leave room
for a mutex in the high-order bits. */
guard = build1 (ADDR_EXPR,
build_pointer_type (TREE_TYPE (guard)),
guard);
guard = build1 (NOP_EXPR,
build_pointer_type (char_type_node),
guard);
guard = build1 (INDIRECT_REF, char_type_node, guard);
}
return guard;
}
/* Return an expression which determines whether or not the GUARD
variable has already been initialized. */
tree
get_guard_cond (tree guard)
{
tree guard_value;
/* Check to see if the GUARD is zero. */
guard = get_guard_bits (guard);
/* Mask off all but the low bit. */
if (targetm.cxx.guard_mask_bit ())
{
guard_value = integer_one_node;
if (!same_type_p (TREE_TYPE (guard_value), TREE_TYPE (guard)))
guard_value = convert (TREE_TYPE (guard), guard_value);
guard = cp_build_binary_op (input_location,
BIT_AND_EXPR, guard, guard_value,
tf_warning_or_error);
}
guard_value = integer_zero_node;
if (!same_type_p (TREE_TYPE (guard_value), TREE_TYPE (guard)))
guard_value = convert (TREE_TYPE (guard), guard_value);
return cp_build_binary_op (input_location,
EQ_EXPR, guard, guard_value,
tf_warning_or_error);
}
/* Return an expression which sets the GUARD variable, indicating that
the variable being guarded has been initialized. */
tree
set_guard (tree guard)
{
tree guard_init;
/* Set the GUARD to one. */
guard = get_guard_bits (guard);
guard_init = integer_one_node;
if (!same_type_p (TREE_TYPE (guard_init), TREE_TYPE (guard)))
guard_init = convert (TREE_TYPE (guard), guard_init);
return cp_build_modify_expr (guard, NOP_EXPR, guard_init,
tf_warning_or_error);
}
/* Start the process of running a particular set of global constructors
or destructors. Subroutine of do_[cd]tors. */
static tree
start_objects (int method_type, int initp)
{
tree body;
tree fndecl;
char type[10];
/* Make ctor or dtor function. METHOD_TYPE may be 'I' or 'D'. */
if (initp != DEFAULT_INIT_PRIORITY)
{
char joiner;
#ifdef JOINER
joiner = JOINER;
#else
joiner = '_';
#endif
sprintf (type, "%c%c%.5u", method_type, joiner, initp);
}
else
sprintf (type, "%c", method_type);
fndecl = build_lang_decl (FUNCTION_DECL,
get_file_function_name (type),
build_function_type (void_type_node,
void_list_node));
start_preparsed_function (fndecl, /*attrs=*/NULL_TREE, SF_PRE_PARSED);
TREE_PUBLIC (current_function_decl) = 0;
/* Mark as artificial because it's not explicitly in the user's
source code. */
DECL_ARTIFICIAL (current_function_decl) = 1;
/* Mark this declaration as used to avoid spurious warnings. */
TREE_USED (current_function_decl) = 1;
/* Mark this function as a global constructor or destructor. */
if (method_type == 'I')
DECL_GLOBAL_CTOR_P (current_function_decl) = 1;
else
DECL_GLOBAL_DTOR_P (current_function_decl) = 1;
body = begin_compound_stmt (BCS_FN_BODY);
return body;
}
/* Finish the process of running a particular set of global constructors
or destructors. Subroutine of do_[cd]tors. */
static void
finish_objects (int method_type, int initp, tree body)
{
tree fn;
/* Finish up. */
finish_compound_stmt (body);
fn = finish_function (0);
if (method_type == 'I')
{
DECL_STATIC_CONSTRUCTOR (fn) = 1;
decl_init_priority_insert (fn, initp);
}
else
{
DECL_STATIC_DESTRUCTOR (fn) = 1;
decl_fini_priority_insert (fn, initp);
}
expand_or_defer_fn (fn);
}
/* The names of the parameters to the function created to handle
initializations and destructions for objects with static storage
duration. */
#define INITIALIZE_P_IDENTIFIER "__initialize_p"
#define PRIORITY_IDENTIFIER "__priority"
/* The name of the function we create to handle initializations and
destructions for objects with static storage duration. */
#define SSDF_IDENTIFIER "__static_initialization_and_destruction"
/* The declaration for the __INITIALIZE_P argument. */
static GTY(()) tree initialize_p_decl;
/* The declaration for the __PRIORITY argument. */
static GTY(()) tree priority_decl;
/* The declaration for the static storage duration function. */
static GTY(()) tree ssdf_decl;
/* All the static storage duration functions created in this
translation unit. */
static GTY(()) VEC(tree,gc) *ssdf_decls;
/* A map from priority levels to information about that priority
level. There may be many such levels, so efficient lookup is
important. */
static splay_tree priority_info_map;
/* Begins the generation of the function that will handle all
initialization and destruction of objects with static storage
duration. The function generated takes two parameters of type
`int': __INITIALIZE_P and __PRIORITY. If __INITIALIZE_P is
nonzero, it performs initializations. Otherwise, it performs
destructions. It only performs those initializations or
destructions with the indicated __PRIORITY. The generated function
returns no value.
It is assumed that this function will only be called once per
translation unit. */
static tree
start_static_storage_duration_function (unsigned count)
{
tree parm_types;
tree type;
tree body;
char id[sizeof (SSDF_IDENTIFIER) + 1 /* '\0' */ + 32];
/* Create the identifier for this function. It will be of the form
SSDF_IDENTIFIER_<number>. */
sprintf (id, "%s_%u", SSDF_IDENTIFIER, count);
/* Create the parameters. */
parm_types = void_list_node;
parm_types = tree_cons (NULL_TREE, integer_type_node, parm_types);
parm_types = tree_cons (NULL_TREE, integer_type_node, parm_types);
type = build_function_type (void_type_node, parm_types);
/* Create the FUNCTION_DECL itself. */
ssdf_decl = build_lang_decl (FUNCTION_DECL,
get_identifier (id),
type);
TREE_PUBLIC (ssdf_decl) = 0;
DECL_ARTIFICIAL (ssdf_decl) = 1;
/* Put this function in the list of functions to be called from the
static constructors and destructors. */
if (!ssdf_decls)
{
ssdf_decls = VEC_alloc (tree, gc, 32);
/* Take this opportunity to initialize the map from priority
numbers to information about that priority level. */
priority_info_map = splay_tree_new (splay_tree_compare_ints,
/*delete_key_fn=*/0,
/*delete_value_fn=*/
(splay_tree_delete_value_fn) &free);
/* We always need to generate functions for the
DEFAULT_INIT_PRIORITY so enter it now. That way when we walk
priorities later, we'll be sure to find the
DEFAULT_INIT_PRIORITY. */
get_priority_info (DEFAULT_INIT_PRIORITY);
}
VEC_safe_push (tree, gc, ssdf_decls, ssdf_decl);
/* Create the argument list. */
initialize_p_decl = cp_build_parm_decl
(get_identifier (INITIALIZE_P_IDENTIFIER), integer_type_node);
DECL_CONTEXT (initialize_p_decl) = ssdf_decl;
TREE_USED (initialize_p_decl) = 1;
priority_decl = cp_build_parm_decl
(get_identifier (PRIORITY_IDENTIFIER), integer_type_node);
DECL_CONTEXT (priority_decl) = ssdf_decl;
TREE_USED (priority_decl) = 1;
TREE_CHAIN (initialize_p_decl) = priority_decl;
DECL_ARGUMENTS (ssdf_decl) = initialize_p_decl;
/* Put the function in the global scope. */
pushdecl (ssdf_decl);
/* Start the function itself. This is equivalent to declaring the
function as:
static void __ssdf (int __initialize_p, init __priority_p);
It is static because we only need to call this function from the
various constructor and destructor functions for this module. */
start_preparsed_function (ssdf_decl,
/*attrs=*/NULL_TREE,
SF_PRE_PARSED);
/* Set up the scope of the outermost block in the function. */
body = begin_compound_stmt (BCS_FN_BODY);
return body;
}
/* Finish the generation of the function which performs initialization
and destruction of objects with static storage duration. After
this point, no more such objects can be created. */
static void
finish_static_storage_duration_function (tree body)
{
/* Close out the function. */
finish_compound_stmt (body);
expand_or_defer_fn (finish_function (0));
}
/* Return the information about the indicated PRIORITY level. If no
code to handle this level has yet been generated, generate the
appropriate prologue. */
static priority_info
get_priority_info (int priority)
{
priority_info pi;
splay_tree_node n;
n = splay_tree_lookup (priority_info_map,
(splay_tree_key) priority);
if (!n)
{
/* Create a new priority information structure, and insert it
into the map. */
pi = XNEW (struct priority_info_s);
pi->initializations_p = 0;
pi->destructions_p = 0;
splay_tree_insert (priority_info_map,
(splay_tree_key) priority,
(splay_tree_value) pi);
}
else
pi = (priority_info) n->value;
return pi;
}
/* The effective initialization priority of a DECL. */
#define DECL_EFFECTIVE_INIT_PRIORITY(decl) \
((!DECL_HAS_INIT_PRIORITY_P (decl) || DECL_INIT_PRIORITY (decl) == 0) \
? DEFAULT_INIT_PRIORITY : DECL_INIT_PRIORITY (decl))
/* Whether a DECL needs a guard to protect it against multiple
initialization. */
#define NEEDS_GUARD_P(decl) (TREE_PUBLIC (decl) && (DECL_COMMON (decl) \
|| DECL_ONE_ONLY (decl) \
|| DECL_WEAK (decl)))
/* Called from one_static_initialization_or_destruction(),
via walk_tree.
Walks the initializer list of a global variable and looks for
temporary variables (DECL_NAME() == NULL and DECL_ARTIFICIAL != 0)
and that have their DECL_CONTEXT() == NULL.
For each such temporary variable, set their DECL_CONTEXT() to
the current function. This is necessary because otherwise
some optimizers (enabled by -O2 -fprofile-arcs) might crash
when trying to refer to a temporary variable that does not have
it's DECL_CONTECT() properly set. */
static tree
fix_temporary_vars_context_r (tree *node,
int *unused ATTRIBUTE_UNUSED,
void *unused1 ATTRIBUTE_UNUSED)
{
gcc_assert (current_function_decl);
if (TREE_CODE (*node) == BIND_EXPR)
{
tree var;
for (var = BIND_EXPR_VARS (*node); var; var = TREE_CHAIN (var))
if (TREE_CODE (var) == VAR_DECL
&& !DECL_NAME (var)
&& DECL_ARTIFICIAL (var)
&& !DECL_CONTEXT (var))
DECL_CONTEXT (var) = current_function_decl;
}
return NULL_TREE;
}
/* Set up to handle the initialization or destruction of DECL. If
INITP is nonzero, we are initializing the variable. Otherwise, we
are destroying it. */
static void
one_static_initialization_or_destruction (tree decl, tree init, bool initp)
{
tree guard_if_stmt = NULL_TREE;
tree guard;
/* If we are supposed to destruct and there's a trivial destructor,
nothing has to be done. */
if (!initp
&& TYPE_HAS_TRIVIAL_DESTRUCTOR (TREE_TYPE (decl)))
return;
/* Trick the compiler into thinking we are at the file and line
where DECL was declared so that error-messages make sense, and so
that the debugger will show somewhat sensible file and line
information. */
input_location = DECL_SOURCE_LOCATION (decl);
/* Make sure temporary variables in the initialiser all have
their DECL_CONTEXT() set to a value different from NULL_TREE.
This can happen when global variables initialisers are built.
In that case, the DECL_CONTEXT() of the global variables _AND_ of all
the temporary variables that might have been generated in the
accompagning initialisers is NULL_TREE, meaning the variables have been
declared in the global namespace.
What we want to do here is to fix that and make sure the DECL_CONTEXT()
of the temporaries are set to the current function decl. */
cp_walk_tree_without_duplicates (&init,
fix_temporary_vars_context_r,
NULL);
/* Because of:
[class.access.spec]
Access control for implicit calls to the constructors,
the conversion functions, or the destructor called to
create and destroy a static data member is performed as
if these calls appeared in the scope of the member's
class.
we pretend we are in a static member function of the class of
which the DECL is a member. */
if (member_p (decl))
{
DECL_CONTEXT (current_function_decl) = DECL_CONTEXT (decl);
DECL_STATIC_FUNCTION_P (current_function_decl) = 1;
}
/* Assume we don't need a guard. */
guard = NULL_TREE;
/* We need a guard if this is an object with external linkage that
might be initialized in more than one place. (For example, a
static data member of a template, when the data member requires
construction.) */
if (NEEDS_GUARD_P (decl))
{
tree guard_cond;
guard = get_guard (decl);
/* When using __cxa_atexit, we just check the GUARD as we would
for a local static. */
if (flag_use_cxa_atexit)
{
/* When using __cxa_atexit, we never try to destroy
anything from a static destructor. */
gcc_assert (initp);
guard_cond = get_guard_cond (guard);
}
/* If we don't have __cxa_atexit, then we will be running
destructors from .fini sections, or their equivalents. So,
we need to know how many times we've tried to initialize this
object. We do initializations only if the GUARD is zero,
i.e., if we are the first to initialize the variable. We do
destructions only if the GUARD is one, i.e., if we are the
last to destroy the variable. */
else if (initp)
guard_cond
= cp_build_binary_op (input_location,
EQ_EXPR,
cp_build_unary_op (PREINCREMENT_EXPR,
guard,
/*noconvert=*/1,
tf_warning_or_error),
integer_one_node,
tf_warning_or_error);
else
guard_cond
= cp_build_binary_op (input_location,
EQ_EXPR,
cp_build_unary_op (PREDECREMENT_EXPR,
guard,
/*noconvert=*/1,
tf_warning_or_error),
integer_zero_node,
tf_warning_or_error);
guard_if_stmt = begin_if_stmt ();
finish_if_stmt_cond (guard_cond, guard_if_stmt);
}
/* If we're using __cxa_atexit, we have not already set the GUARD,
so we must do so now. */
if (guard && initp && flag_use_cxa_atexit)
finish_expr_stmt (set_guard (guard));
/* Perform the initialization or destruction. */
if (initp)
{
if (init)
finish_expr_stmt (init);
/* If we're using __cxa_atexit, register a function that calls the
destructor for the object. */
if (flag_use_cxa_atexit)
finish_expr_stmt (register_dtor_fn (decl));
}
else
finish_expr_stmt (build_cleanup (decl));
/* Finish the guard if-stmt, if necessary. */
if (guard)
{
finish_then_clause (guard_if_stmt);
finish_if_stmt (guard_if_stmt);
}
/* Now that we're done with DECL we don't need to pretend to be a
member of its class any longer. */
DECL_CONTEXT (current_function_decl) = NULL_TREE;
DECL_STATIC_FUNCTION_P (current_function_decl) = 0;
}
/* Generate code to do the initialization or destruction of the decls in VARS,
a TREE_LIST of VAR_DECL with static storage duration.
Whether initialization or destruction is performed is specified by INITP. */
static void
do_static_initialization_or_destruction (tree vars, bool initp)
{
tree node, init_if_stmt, cond;
/* Build the outer if-stmt to check for initialization or destruction. */
init_if_stmt = begin_if_stmt ();
cond = initp ? integer_one_node : integer_zero_node;
cond = cp_build_binary_op (input_location,
EQ_EXPR,
initialize_p_decl,
cond,
tf_warning_or_error);
finish_if_stmt_cond (cond, init_if_stmt);
node = vars;
do {
tree decl = TREE_VALUE (node);
tree priority_if_stmt;
int priority;
priority_info pi;
/* If we don't need a destructor, there's nothing to do. Avoid
creating a possibly empty if-stmt. */
if (!initp && TYPE_HAS_TRIVIAL_DESTRUCTOR (TREE_TYPE (decl)))
{
node = TREE_CHAIN (node);
continue;
}
/* Remember that we had an initialization or finalization at this
priority. */
priority = DECL_EFFECTIVE_INIT_PRIORITY (decl);
pi = get_priority_info (priority);
if (initp)
pi->initializations_p = 1;
else
pi->destructions_p = 1;
/* Conditionalize this initialization on being in the right priority
and being initializing/finalizing appropriately. */
priority_if_stmt = begin_if_stmt ();
cond = cp_build_binary_op (input_location,
EQ_EXPR,
priority_decl,
build_int_cst (NULL_TREE, priority),
tf_warning_or_error);
finish_if_stmt_cond (cond, priority_if_stmt);
/* Process initializers with same priority. */
for (; node
&& DECL_EFFECTIVE_INIT_PRIORITY (TREE_VALUE (node)) == priority;
node = TREE_CHAIN (node))
/* Do one initialization or destruction. */
one_static_initialization_or_destruction (TREE_VALUE (node),
TREE_PURPOSE (node), initp);
/* Finish up the priority if-stmt body. */
finish_then_clause (priority_if_stmt);
finish_if_stmt (priority_if_stmt);
} while (node);
/* Finish up the init/destruct if-stmt body. */
finish_then_clause (init_if_stmt);
finish_if_stmt (init_if_stmt);
}
/* VARS is a list of variables with static storage duration which may
need initialization and/or finalization. Remove those variables
that don't really need to be initialized or finalized, and return
the resulting list. The order in which the variables appear in
VARS is in reverse order of the order in which they should actually
be initialized. The list we return is in the unreversed order;
i.e., the first variable should be initialized first. */
static tree
prune_vars_needing_no_initialization (tree *vars)
{
tree *var = vars;
tree result = NULL_TREE;
while (*var)
{
tree t = *var;
tree decl = TREE_VALUE (t);
tree init = TREE_PURPOSE (t);
/* Deal gracefully with error. */
if (decl == error_mark_node)
{
var = &TREE_CHAIN (t);
continue;
}
/* The only things that can be initialized are variables. */
gcc_assert (TREE_CODE (decl) == VAR_DECL);
/* If this object is not defined, we don't need to do anything
here. */
if (DECL_EXTERNAL (decl))
{
var = &TREE_CHAIN (t);
continue;
}
/* Also, if the initializer already contains errors, we can bail
out now. */
if (init && TREE_CODE (init) == TREE_LIST
&& value_member (error_mark_node, init))
{
var = &TREE_CHAIN (t);
continue;
}
/* This variable is going to need initialization and/or
finalization, so we add it to the list. */
*var = TREE_CHAIN (t);
TREE_CHAIN (t) = result;
result = t;
}
return result;
}
/* Make sure we have told the back end about all the variables in
VARS. */
static void
write_out_vars (tree vars)
{
tree v;
for (v = vars; v; v = TREE_CHAIN (v))
{
tree var = TREE_VALUE (v);
if (!var_finalized_p (var))
{
import_export_decl (var);
rest_of_decl_compilation (var, 1, 1);
}
}
}
/* Generate a static constructor (if CONSTRUCTOR_P) or destructor
(otherwise) that will initialize all global objects with static
storage duration having the indicated PRIORITY. */
static void
generate_ctor_or_dtor_function (bool constructor_p, int priority,
location_t *locus)
{
char function_key;
tree arguments;
tree fndecl;
tree body;
size_t i;
input_location = *locus;
/* ??? */
/* Was: locus->line++; */
/* We use `I' to indicate initialization and `D' to indicate
destruction. */
function_key = constructor_p ? 'I' : 'D';
/* We emit the function lazily, to avoid generating empty
global constructors and destructors. */
body = NULL_TREE;
/* For Objective-C++, we may need to initialize metadata found in this module.
This must be done _before_ any other static initializations. */
if (c_dialect_objc () && (priority == DEFAULT_INIT_PRIORITY)
&& constructor_p && objc_static_init_needed_p ())
{
body = start_objects (function_key, priority);
objc_generate_static_init_call (NULL_TREE);
}
/* Call the static storage duration function with appropriate
arguments. */
for (i = 0; VEC_iterate (tree, ssdf_decls, i, fndecl); ++i)
{
/* Calls to pure or const functions will expand to nothing. */
if (! (flags_from_decl_or_type (fndecl) & (ECF_CONST | ECF_PURE)))
{
if (! body)
body = start_objects (function_key, priority);
arguments = tree_cons (NULL_TREE,
build_int_cst (NULL_TREE, priority),
NULL_TREE);
arguments = tree_cons (NULL_TREE,
build_int_cst (NULL_TREE, constructor_p),
arguments);
finish_expr_stmt (cp_build_function_call (fndecl, arguments,
tf_warning_or_error));
}
}
/* Close out the function. */
if (body)
finish_objects (function_key, priority, body);
}
/* Generate constructor and destructor functions for the priority
indicated by N. */
static int
generate_ctor_and_dtor_functions_for_priority (splay_tree_node n, void * data)
{
location_t *locus = (location_t *) data;
int priority = (int) n->key;
priority_info pi = (priority_info) n->value;
/* Generate the functions themselves, but only if they are really
needed. */
if (pi->initializations_p)
generate_ctor_or_dtor_function (/*constructor_p=*/true, priority, locus);
if (pi->destructions_p)
generate_ctor_or_dtor_function (/*constructor_p=*/false, priority, locus);
/* Keep iterating. */
return 0;
}
/* Called via LANGHOOK_CALLGRAPH_ANALYZE_EXPR. It is supposed to mark
decls referenced from front-end specific constructs; it will be called
only for language-specific tree nodes.
Here we must deal with member pointers. */
tree
cxx_callgraph_analyze_expr (tree *tp, int *walk_subtrees ATTRIBUTE_UNUSED)
{
tree t = *tp;
switch (TREE_CODE (t))
{
case PTRMEM_CST:
if (TYPE_PTRMEMFUNC_P (TREE_TYPE (t)))
cgraph_mark_address_taken_node (cgraph_node (PTRMEM_CST_MEMBER (t)));
break;
case BASELINK:
if (TREE_CODE (BASELINK_FUNCTIONS (t)) == FUNCTION_DECL)
cgraph_mark_address_taken_node (cgraph_node (BASELINK_FUNCTIONS (t)));
break;
case VAR_DECL:
if (DECL_VTABLE_OR_VTT_P (t))
{
/* The ABI requires that all virtual tables be emitted
whenever one of them is. */
tree vtbl;
for (vtbl = CLASSTYPE_VTABLES (DECL_CONTEXT (t));
vtbl;
vtbl = TREE_CHAIN (vtbl))
mark_decl_referenced (vtbl);
}
else if (DECL_CONTEXT (t)
&& flag_use_repository
&& TREE_CODE (DECL_CONTEXT (t)) == FUNCTION_DECL)
/* If we need a static variable in a function, then we
need the containing function. */
mark_decl_referenced (DECL_CONTEXT (t));
break;
default:
break;
}
return NULL;
}
/* Java requires that we be able to reference a local address for a
method, and not be confused by PLT entries. If hidden aliases are
supported, collect and return all the functions for which we should
emit a hidden alias. */
static struct pointer_set_t *
collect_candidates_for_java_method_aliases (void)
{
struct cgraph_node *node;
struct pointer_set_t *candidates = NULL;
#ifndef HAVE_GAS_HIDDEN
return candidates;
#endif
for (node = cgraph_nodes; node ; node = node->next)
{
tree fndecl = node->decl;
if (DECL_CONTEXT (fndecl)
&& TYPE_P (DECL_CONTEXT (fndecl))
&& TYPE_FOR_JAVA (DECL_CONTEXT (fndecl))
&& TARGET_USE_LOCAL_THUNK_ALIAS_P (fndecl))
{
if (candidates == NULL)
candidates = pointer_set_create ();
pointer_set_insert (candidates, fndecl);
}
}
return candidates;
}
/* Java requires that we be able to reference a local address for a
method, and not be confused by PLT entries. If hidden aliases are
supported, emit one for each java function that we've emitted.
CANDIDATES is the set of FUNCTION_DECLs that were gathered
by collect_candidates_for_java_method_aliases. */
static void
build_java_method_aliases (struct pointer_set_t *candidates)
{
struct cgraph_node *node;
#ifndef HAVE_GAS_HIDDEN
return;
#endif
for (node = cgraph_nodes; node ; node = node->next)
{
tree fndecl = node->decl;
if (TREE_ASM_WRITTEN (fndecl)
&& pointer_set_contains (candidates, fndecl))
{
/* Mangle the name in a predictable way; we need to reference
this from a java compiled object file. */
tree oid, nid, alias;
const char *oname;
char *nname;
oid = DECL_ASSEMBLER_NAME (fndecl);
oname = IDENTIFIER_POINTER (oid);
gcc_assert (oname[0] == '_' && oname[1] == 'Z');
nname = ACONCAT (("_ZGA", oname+2, NULL));
nid = get_identifier (nname);
alias = make_alias_for (fndecl, nid);
TREE_PUBLIC (alias) = 1;
DECL_VISIBILITY (alias) = VISIBILITY_HIDDEN;
assemble_alias (alias, oid);
}
}
}
/* Returns true iff there is a definition available for variable or
function DECL. */
static bool
decl_defined_p (tree decl)
{
if (TREE_CODE (decl) == FUNCTION_DECL)
return (DECL_INITIAL (decl) != NULL_TREE);
else
{
gcc_assert (TREE_CODE (decl) == VAR_DECL);
return !DECL_EXTERNAL (decl);
}
}
/* Complain that DECL uses a type with no linkage but is never defined. */
static void
no_linkage_error (tree decl)
{
tree t = no_linkage_check (TREE_TYPE (decl), /*relaxed_p=*/false);
if (TYPE_ANONYMOUS_P (t))
{
permerror (0, "%q+#D, declared using anonymous type, "
"is used but never defined", decl);
if (is_typedef_decl (TYPE_NAME (t)))
permerror (0, "%q+#D does not refer to the unqualified type, "
"so it is not used for linkage", TYPE_NAME (t));
}
else
permerror (0, "%q+#D, declared using local type %qT, "
"is used but never defined", decl, t);
}
/* This routine is called at the end of compilation.
Its job is to create all the code needed to initialize and
destroy the global aggregates. We do the destruction
first, since that way we only need to reverse the decls once. */
void
cp_write_global_declarations (void)
{
tree vars;
bool reconsider;
size_t i;
location_t locus;
unsigned ssdf_count = 0;
int retries = 0;
tree decl;
struct pointer_set_t *candidates;
locus = input_location;
at_eof = 1;
/* Bad parse errors. Just forget about it. */
if (! global_bindings_p () || current_class_type || decl_namespace_list)
return;
if (pch_file)
c_common_write_pch ();
/* FIXME - huh? was input_line -= 1;*/
/* We now have to write out all the stuff we put off writing out.
These include:
o Template specializations that we have not yet instantiated,
but which are needed.
o Initialization and destruction for non-local objects with
static storage duration. (Local objects with static storage
duration are initialized when their scope is first entered,
and are cleaned up via atexit.)
o Virtual function tables.
All of these may cause others to be needed. For example,
instantiating one function may cause another to be needed, and
generating the initializer for an object may cause templates to be
instantiated, etc., etc. */
timevar_push (TV_VARCONST);
emit_support_tinfos ();
do
{
tree t;
tree decl;
reconsider = false;
/* If there are templates that we've put off instantiating, do
them now. */
instantiate_pending_templates (retries);
ggc_collect ();
/* Write out virtual tables as required. Note that writing out
the virtual table for a template class may cause the
instantiation of members of that class. If we write out
vtables then we remove the class from our list so we don't
have to look at it again. */
while (keyed_classes != NULL_TREE
&& maybe_emit_vtables (TREE_VALUE (keyed_classes)))
{
reconsider = true;
keyed_classes = TREE_CHAIN (keyed_classes);
}
t = keyed_classes;
if (t != NULL_TREE)
{
tree next = TREE_CHAIN (t);
while (next)
{
if (maybe_emit_vtables (TREE_VALUE (next)))
{
reconsider = true;
TREE_CHAIN (t) = TREE_CHAIN (next);
}
else
t = next;
next = TREE_CHAIN (t);
}
}
/* Write out needed type info variables. We have to be careful
looping through unemitted decls, because emit_tinfo_decl may
cause other variables to be needed. New elements will be
appended, and we remove from the vector those that actually
get emitted. */
for (i = VEC_length (tree, unemitted_tinfo_decls);
VEC_iterate (tree, unemitted_tinfo_decls, --i, t);)
if (emit_tinfo_decl (t))
{
reconsider = true;
VEC_unordered_remove (tree, unemitted_tinfo_decls, i);
}
/* The list of objects with static storage duration is built up
in reverse order. We clear STATIC_AGGREGATES so that any new
aggregates added during the initialization of these will be
initialized in the correct order when we next come around the
loop. */
vars = prune_vars_needing_no_initialization (&static_aggregates);
if (vars)
{
/* We need to start a new initialization function each time
through the loop. That's because we need to know which
vtables have been referenced, and TREE_SYMBOL_REFERENCED
isn't computed until a function is finished, and written
out. That's a deficiency in the back end. When this is
fixed, these initialization functions could all become
inline, with resulting performance improvements. */
tree ssdf_body;
/* Set the line and file, so that it is obviously not from
the source file. */
input_location = locus;
ssdf_body = start_static_storage_duration_function (ssdf_count);
/* Make sure the back end knows about all the variables. */
write_out_vars (vars);
/* First generate code to do all the initializations. */
if (vars)
do_static_initialization_or_destruction (vars, /*initp=*/true);
/* Then, generate code to do all the destructions. Do these
in reverse order so that the most recently constructed
variable is the first destroyed. If we're using
__cxa_atexit, then we don't need to do this; functions
were registered at initialization time to destroy the
local statics. */
if (!flag_use_cxa_atexit && vars)
{
vars = nreverse (vars);
do_static_initialization_or_destruction (vars, /*initp=*/false);
}
else
vars = NULL_TREE;
/* Finish up the static storage duration function for this
round. */
input_location = locus;
finish_static_storage_duration_function (ssdf_body);
/* All those initializations and finalizations might cause
us to need more inline functions, more template
instantiations, etc. */
reconsider = true;
ssdf_count++;
/* ??? was: locus.line++; */
}
/* Go through the set of inline functions whose bodies have not
been emitted yet. If out-of-line copies of these functions
are required, emit them. */
for (i = 0; VEC_iterate (tree, deferred_fns, i, decl); ++i)
{
/* Does it need synthesizing? */
if (DECL_DEFAULTED_FN (decl) && ! DECL_INITIAL (decl)
&& (! DECL_REALLY_EXTERN (decl) || possibly_inlined_p (decl)))
{
/* Even though we're already at the top-level, we push
there again. That way, when we pop back a few lines
hence, all of our state is restored. Otherwise,
finish_function doesn't clean things up, and we end
up with CURRENT_FUNCTION_DECL set. */
push_to_top_level ();
/* The decl's location will mark where it was first
needed. Save that so synthesize method can indicate
where it was needed from, in case of error */
input_location = DECL_SOURCE_LOCATION (decl);
synthesize_method (decl);
pop_from_top_level ();
reconsider = true;
}
if (!DECL_SAVED_TREE (decl))
continue;
/* We lie to the back end, pretending that some functions
are not defined when they really are. This keeps these
functions from being put out unnecessarily. But, we must
stop lying when the functions are referenced, or if they
are not comdat since they need to be put out now. If
DECL_INTERFACE_KNOWN, then we have already set
DECL_EXTERNAL appropriately, so there's no need to check
again, and we do not want to clear DECL_EXTERNAL if a
previous call to import_export_decl set it.
This is done in a separate for cycle, because if some
deferred function is contained in another deferred
function later in deferred_fns varray,
rest_of_compilation would skip this function and we
really cannot expand the same function twice. */
import_export_decl (decl);
if (DECL_NOT_REALLY_EXTERN (decl)
&& DECL_INITIAL (decl)
&& decl_needed_p (decl))
{
struct cgraph_node *node = cgraph_get_node (decl), *alias, *next;
DECL_EXTERNAL (decl) = 0;
/* If we mark !DECL_EXTERNAL one of the same body aliases,
we need to mark all of them that way. */
if (node && node->same_body)
{
DECL_EXTERNAL (node->decl) = 0;
for (alias = node->same_body; alias; alias = alias->next)
DECL_EXTERNAL (alias->decl) = 0;
}
/* If we mark !DECL_EXTERNAL one of the symbols in some comdat
group, we need to mark all symbols in the same comdat group
that way. */
if (node->same_comdat_group)
for (next = node->same_comdat_group;
next != node;
next = next->same_comdat_group)
{
DECL_EXTERNAL (next->decl) = 0;
if (next->same_body)
{
for (alias = next->same_body;
alias;
alias = alias->next)
DECL_EXTERNAL (alias->decl) = 0;
}
}
}
/* If we're going to need to write this function out, and
there's already a body for it, create RTL for it now.
(There might be no body if this is a method we haven't
gotten around to synthesizing yet.) */
if (!DECL_EXTERNAL (decl)
&& decl_needed_p (decl)
&& !TREE_ASM_WRITTEN (decl)
&& !cgraph_node (decl)->local.finalized)
{
/* We will output the function; no longer consider it in this
loop. */
DECL_DEFER_OUTPUT (decl) = 0;
/* Generate RTL for this function now that we know we
need it. */
expand_or_defer_fn (decl);
/* If we're compiling -fsyntax-only pretend that this
function has been written out so that we don't try to
expand it again. */
if (flag_syntax_only)
TREE_ASM_WRITTEN (decl) = 1;
reconsider = true;
}
}
if (walk_namespaces (wrapup_globals_for_namespace, /*data=*/0))
reconsider = true;
/* Static data members are just like namespace-scope globals. */
for (i = 0; VEC_iterate (tree, pending_statics, i, decl); ++i)
{
if (var_finalized_p (decl) || DECL_REALLY_EXTERN (decl)
/* Don't write it out if we haven't seen a definition. */
|| DECL_IN_AGGR_P (decl))
continue;
import_export_decl (decl);
/* If this static data member is needed, provide it to the
back end. */
if (DECL_NOT_REALLY_EXTERN (decl) && decl_needed_p (decl))
DECL_EXTERNAL (decl) = 0;
}
if (VEC_length (tree, pending_statics) != 0
&& wrapup_global_declarations (VEC_address (tree, pending_statics),
VEC_length (tree, pending_statics)))
reconsider = true;
retries++;
}
while (reconsider);
/* All used inline functions must have a definition at this point. */
for (i = 0; VEC_iterate (tree, deferred_fns, i, decl); ++i)
{
if (/* Check online inline functions that were actually used. */
DECL_ODR_USED (decl) && DECL_DECLARED_INLINE_P (decl)
/* If the definition actually was available here, then the
fact that the function was not defined merely represents
that for some reason (use of a template repository,
#pragma interface, etc.) we decided not to emit the
definition here. */
&& !DECL_INITIAL (decl)
/* An explicit instantiation can be used to specify
that the body is in another unit. It will have
already verified there was a definition. */
&& !DECL_EXPLICIT_INSTANTIATION (decl))
{
warning (0, "inline function %q+D used but never defined", decl);
/* Avoid a duplicate warning from check_global_declaration_1. */
TREE_NO_WARNING (decl) = 1;
}
}
/* So must decls that use a type with no linkage. */
for (i = 0; VEC_iterate (tree, no_linkage_decls, i, decl); ++i)
if (!decl_defined_p (decl))
no_linkage_error (decl);
/* We give C linkage to static constructors and destructors. */
push_lang_context (lang_name_c);
/* Generate initialization and destruction functions for all
priorities for which they are required. */
if (priority_info_map)
splay_tree_foreach (priority_info_map,
generate_ctor_and_dtor_functions_for_priority,
/*data=*/&locus);
else if (c_dialect_objc () && objc_static_init_needed_p ())
/* If this is obj-c++ and we need a static init, call
generate_ctor_or_dtor_function. */
generate_ctor_or_dtor_function (/*constructor_p=*/true,
DEFAULT_INIT_PRIORITY, &locus);
/* We're done with the splay-tree now. */
if (priority_info_map)
splay_tree_delete (priority_info_map);
/* Generate any missing aliases. */
maybe_apply_pending_pragma_weaks ();
/* We're done with static constructors, so we can go back to "C++"
linkage now. */
pop_lang_context ();
/* Collect candidates for Java hidden aliases. */
candidates = collect_candidates_for_java_method_aliases ();
cgraph_finalize_compilation_unit ();
/* Now, issue warnings about static, but not defined, functions,
etc., and emit debugging information. */
walk_namespaces (wrapup_globals_for_namespace, /*data=*/&reconsider);
if (VEC_length (tree, pending_statics) != 0)
{
check_global_declarations (VEC_address (tree, pending_statics),
VEC_length (tree, pending_statics));
emit_debug_global_declarations (VEC_address (tree, pending_statics),
VEC_length (tree, pending_statics));
}
/* Generate hidden aliases for Java. */
if (candidates)
{
build_java_method_aliases (candidates);
pointer_set_destroy (candidates);
}
finish_repo ();
/* The entire file is now complete. If requested, dump everything
to a file. */
{
int flags;
FILE *stream = dump_begin (TDI_tu, &flags);
if (stream)
{
dump_node (global_namespace, flags & ~TDF_SLIM, stream);
dump_end (TDI_tu, stream);
}
}
timevar_pop (TV_VARCONST);
if (flag_detailed_statistics)
{
dump_tree_statistics ();
dump_time_statistics ();
}
input_location = locus;
#ifdef ENABLE_CHECKING
validate_conversion_obstack ();
#endif /* ENABLE_CHECKING */
}
/* FN is an OFFSET_REF, DOTSTAR_EXPR or MEMBER_REF indicating the
function to call in parse-tree form; it has not yet been
semantically analyzed. ARGS are the arguments to the function.
They have already been semantically analyzed. This may change
ARGS. */
tree
build_offset_ref_call_from_tree (tree fn, VEC(tree,gc) **args)
{
tree orig_fn;
VEC(tree,gc) *orig_args = NULL;
tree expr;
tree object;
orig_fn = fn;
object = TREE_OPERAND (fn, 0);
if (processing_template_decl)
{
gcc_assert (TREE_CODE (fn) == DOTSTAR_EXPR
|| TREE_CODE (fn) == MEMBER_REF);
if (type_dependent_expression_p (fn)
|| any_type_dependent_arguments_p (*args))
return build_nt_call_vec (fn, *args);
orig_args = make_tree_vector_copy (*args);
/* Transform the arguments and add the implicit "this"
parameter. That must be done before the FN is transformed
because we depend on the form of FN. */
make_args_non_dependent (*args);
object = build_non_dependent_expr (object);
if (TREE_CODE (fn) == DOTSTAR_EXPR)
object = cp_build_unary_op (ADDR_EXPR, object, 0, tf_warning_or_error);
VEC_safe_insert (tree, gc, *args, 0, object);
/* Now that the arguments are done, transform FN. */
fn = build_non_dependent_expr (fn);
}
/* A qualified name corresponding to a bound pointer-to-member is
represented as an OFFSET_REF:
struct B { void g(); };
void (B::*p)();
void B::g() { (this->*p)(); } */
if (TREE_CODE (fn) == OFFSET_REF)
{
tree object_addr = cp_build_unary_op (ADDR_EXPR, object, 0,
tf_warning_or_error);
fn = TREE_OPERAND (fn, 1);
fn = get_member_function_from_ptrfunc (&object_addr, fn);
VEC_safe_insert (tree, gc, *args, 0, object_addr);
}
expr = cp_build_function_call_vec (fn, args, tf_warning_or_error);
if (processing_template_decl && expr != error_mark_node)
expr = build_min_non_dep_call_vec (expr, orig_fn, orig_args);
if (orig_args != NULL)
release_tree_vector (orig_args);
return expr;
}
void
check_default_args (tree x)
{
tree arg = TYPE_ARG_TYPES (TREE_TYPE (x));
bool saw_def = false;
int i = 0 - (TREE_CODE (TREE_TYPE (x)) == METHOD_TYPE);
for (; arg && arg != void_list_node; arg = TREE_CHAIN (arg), ++i)
{
if (TREE_PURPOSE (arg))
saw_def = true;
else if (saw_def)
{
error ("default argument missing for parameter %P of %q+#D", i, x);
TREE_PURPOSE (arg) = error_mark_node;
}
}
}
/* Return true if function DECL can be inlined. This is used to force
instantiation of methods that might be interesting for inlining. */
bool
possibly_inlined_p (tree decl)
{
gcc_assert (TREE_CODE (decl) == FUNCTION_DECL);
if (DECL_UNINLINABLE (decl))
return false;
if (!optimize || pragma_java_exceptions)
return DECL_DECLARED_INLINE_P (decl);
/* When optimizing, we might inline everything when flatten
attribute or heuristics inlining for size or autoinlining
is used. */
return true;
}
/* Mark DECL (either a _DECL or a BASELINK) as "used" in the program.
If DECL is a specialization or implicitly declared class member,
generate the actual definition. */
void
mark_used (tree decl)
{
HOST_WIDE_INT saved_processing_template_decl = 0;
/* If DECL is a BASELINK for a single function, then treat it just
like the DECL for the function. Otherwise, if the BASELINK is
for an overloaded function, we don't know which function was
actually used until after overload resolution. */
if (TREE_CODE (decl) == BASELINK)
{
decl = BASELINK_FUNCTIONS (decl);
if (really_overloaded_fn (decl))
return;
decl = OVL_CURRENT (decl);
}
/* Set TREE_USED for the benefit of -Wunused. */
TREE_USED (decl) = 1;
if (DECL_CLONED_FUNCTION_P (decl))
TREE_USED (DECL_CLONED_FUNCTION (decl)) = 1;
if (TREE_CODE (decl) == FUNCTION_DECL
&& DECL_DELETED_FN (decl))
{
if (DECL_ARTIFICIAL (decl))
{
if (DECL_OVERLOADED_OPERATOR_P (decl) == TYPE_EXPR
&& LAMBDA_TYPE_P (DECL_CONTEXT (decl)))
{
/* We mark a lambda conversion op as deleted if we can't
generate it properly; see maybe_add_lambda_conv_op. */
sorry ("converting lambda which uses %<...%> to "
"function pointer");
return;
}
}
error ("deleted function %q+D", decl);
error ("used here");
return;
}
/* If we don't need a value, then we don't need to synthesize DECL. */
if (cp_unevaluated_operand != 0)
return;
/* We can only check DECL_ODR_USED on variables or functions with
DECL_LANG_SPECIFIC set, and these are also the only decls that we
might need special handling for. */
if ((TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != FUNCTION_DECL)
|| DECL_LANG_SPECIFIC (decl) == NULL
|| DECL_THUNK_P (decl))
return;
/* We only want to do this processing once. We don't need to keep trying
to instantiate inline templates, because unit-at-a-time will make sure
we get them compiled before functions that want to inline them. */
if (DECL_ODR_USED (decl))
return;
/* If within finish_function, defer the rest until that function
finishes, otherwise it might recurse. */
if (defer_mark_used_calls)
{
VEC_safe_push (tree, gc, deferred_mark_used_calls, decl);
return;
}
/* Normally, we can wait until instantiation-time to synthesize
DECL. However, if DECL is a static data member initialized with
a constant, we need the value right now because a reference to
such a data member is not value-dependent. */
if (TREE_CODE (decl) == VAR_DECL
&& DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (decl)
&& DECL_CLASS_SCOPE_P (decl))
{
/* Don't try to instantiate members of dependent types. We
cannot just use dependent_type_p here because this function
may be called from fold_non_dependent_expr, and then we may
see dependent types, even though processing_template_decl
will not be set. */
if (CLASSTYPE_TEMPLATE_INFO ((DECL_CONTEXT (decl)))
&& uses_template_parms (CLASSTYPE_TI_ARGS (DECL_CONTEXT (decl))))
return;
/* Pretend that we are not in a template, even if we are, so
that the static data member initializer will be processed. */
saved_processing_template_decl = processing_template_decl;
processing_template_decl = 0;
}
if (processing_template_decl)
return;
DECL_ODR_USED (decl) = 1;
if (DECL_CLONED_FUNCTION_P (decl))
DECL_ODR_USED (DECL_CLONED_FUNCTION (decl)) = 1;
/* DR 757: A type without linkage shall not be used as the type of a
variable or function with linkage, unless
o the variable or function has extern "C" linkage (7.5 [dcl.link]), or
o the variable or function is not used (3.2 [basic.def.odr]) or is
defined in the same translation unit. */
if (cxx_dialect > cxx98
&& decl_linkage (decl) != lk_none
&& !DECL_EXTERN_C_P (decl)
&& !DECL_ARTIFICIAL (decl)
&& !decl_defined_p (decl)
&& no_linkage_check (TREE_TYPE (decl), /*relaxed_p=*/false))
{
if (is_local_extern (decl))
/* There's no way to define a local extern, and adding it to
the vector interferes with GC, so give an error now. */
no_linkage_error (decl);
else
VEC_safe_push (tree, gc, no_linkage_decls, decl);
}
if (TREE_CODE (decl) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (decl)
&& !DECL_INITIAL (decl) && !DECL_ARTIFICIAL (decl))
/* Remember it, so we can check it was defined. */
note_vague_linkage_fn (decl);
/* Is it a synthesized method that needs to be synthesized? */
if (TREE_CODE (decl) == FUNCTION_DECL
&& DECL_NONSTATIC_MEMBER_FUNCTION_P (decl)
&& DECL_DEFAULTED_FN (decl)
&& ! DECL_INITIAL (decl))
{
/* Remember the current location for a function we will end up
synthesizing. Then we can inform the user where it was
required in the case of error. */
DECL_SOURCE_LOCATION (decl) = input_location;
/* Synthesizing an implicitly defined member function will result in
garbage collection. We must treat this situation as if we were
within the body of a function so as to avoid collecting live data
on the stack (such as overload resolution candidates).
We could just let cp_write_global_declarations handle synthesizing
this function, since we just added it to deferred_fns, but doing
it at the use site produces better error messages. */
++function_depth;
synthesize_method (decl);
--function_depth;
/* If this is a synthesized method we don't need to
do the instantiation test below. */
}
else if ((TREE_CODE (decl) == FUNCTION_DECL || TREE_CODE (decl) == VAR_DECL)
&& DECL_TEMPLATE_INFO (decl)
&& (!DECL_EXPLICIT_INSTANTIATION (decl)
|| always_instantiate_p (decl)))
/* If this is a function or variable that is an instance of some
template, we now know that we will need to actually do the
instantiation. We check that DECL is not an explicit
instantiation because that is not checked in instantiate_decl.
We put off instantiating functions in order to improve compile
times. Maintaining a stack of active functions is expensive,
and the inliner knows to instantiate any functions it might
need. Therefore, we always try to defer instantiation. */
instantiate_decl (decl, /*defer_ok=*/true,
/*expl_inst_class_mem_p=*/false);
processing_template_decl = saved_processing_template_decl;
}
#include "gt-cp-decl2.h"
|