1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
|
/* Name mangling for the 3.0 -*- C++ -*- ABI.
Copyright (C) 2000-2018 Free Software Foundation, Inc.
Written by Alex Samuel <samuel@codesourcery.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/>. */
/* This file implements mangling of C++ names according to the IA64
C++ ABI specification. A mangled name encodes a function or
variable's name, scope, type, and/or template arguments into a text
identifier. This identifier is used as the function's or
variable's linkage name, to preserve compatibility between C++'s
language features (templates, scoping, and overloading) and C
linkers.
Additionally, g++ uses mangled names internally. To support this,
mangling of types is allowed, even though the mangled name of a
type should not appear by itself as an exported name. Ditto for
uninstantiated templates.
The primary entry point for this module is mangle_decl, which
returns an identifier containing the mangled name for a decl.
Additional entry points are provided to build mangled names of
particular constructs when the appropriate decl for that construct
is not available. These are:
mangle_typeinfo_for_type: typeinfo data
mangle_typeinfo_string_for_type: typeinfo type name
mangle_vtbl_for_type: virtual table data
mangle_vtt_for_type: VTT data
mangle_ctor_vtbl_for_type: `C-in-B' constructor virtual table data
mangle_thunk: thunk function or entry */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "target.h"
#include "vtable-verify.h"
#include "cp-tree.h"
#include "stringpool.h"
#include "cgraph.h"
#include "stor-layout.h"
#include "flags.h"
#include "attribs.h"
/* Debugging support. */
/* Define DEBUG_MANGLE to enable very verbose trace messages. */
#ifndef DEBUG_MANGLE
#define DEBUG_MANGLE 0
#endif
/* Macros for tracing the write_* functions. */
#if DEBUG_MANGLE
# define MANGLE_TRACE(FN, INPUT) \
fprintf (stderr, " %-24s: %-24s\n", (FN), (INPUT))
# define MANGLE_TRACE_TREE(FN, NODE) \
fprintf (stderr, " %-24s: %-24s (%p)\n", \
(FN), get_tree_code_name (TREE_CODE (NODE)), (void *) (NODE))
#else
# define MANGLE_TRACE(FN, INPUT)
# define MANGLE_TRACE_TREE(FN, NODE)
#endif
/* Nonzero if NODE is a class template-id. We can't rely on
CLASSTYPE_USE_TEMPLATE here because of tricky bugs in the parser
that hard to distinguish A<T> from A, where A<T> is the type as
instantiated outside of the template, and A is the type used
without parameters inside the template. */
#define CLASSTYPE_TEMPLATE_ID_P(NODE) \
(TREE_CODE (NODE) == BOUND_TEMPLATE_TEMPLATE_PARM \
|| (CLASS_TYPE_P (NODE) \
&& CLASSTYPE_TEMPLATE_INFO (NODE) != NULL \
&& PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (NODE))))
/* For deciding whether to set G.need_abi_warning, we need to consider both
warn_abi_version and flag_abi_compat_version. */
#define abi_warn_or_compat_version_crosses(N) \
(abi_version_crosses (N) || abi_compat_version_crosses (N))
/* And sometimes we can simplify the code path if we don't need to worry about
previous ABIs. */
#define abi_flag_at_least(flag,N) (flag == 0 || flag >= N)
#define any_abi_below(N) \
(!abi_version_at_least (N) \
|| !abi_flag_at_least (warn_abi_version, (N)) \
|| !abi_flag_at_least (flag_abi_compat_version, (N)))
/* Things we only need one of. This module is not reentrant. */
struct GTY(()) globals {
/* An array of the current substitution candidates, in the order
we've seen them. */
vec<tree, va_gc> *substitutions;
/* The entity that is being mangled. */
tree GTY ((skip)) entity;
/* How many parameter scopes we are inside. */
int parm_depth;
/* True if the mangling will be different in a future version of the
ABI. */
bool need_abi_warning;
/* True if the mangling will be different in C++17 mode. */
bool need_cxx17_warning;
};
static GTY (()) globals G;
/* The obstack on which we build mangled names. */
static struct obstack *mangle_obstack;
/* The obstack on which we build mangled names that are not going to
be IDENTIFIER_NODEs. */
static struct obstack name_obstack;
/* The first object on the name_obstack; we use this to free memory
allocated on the name_obstack. */
static void *name_base;
/* Indices into subst_identifiers. These are identifiers used in
special substitution rules. */
typedef enum
{
SUBID_ALLOCATOR,
SUBID_BASIC_STRING,
SUBID_CHAR_TRAITS,
SUBID_BASIC_ISTREAM,
SUBID_BASIC_OSTREAM,
SUBID_BASIC_IOSTREAM,
SUBID_MAX
}
substitution_identifier_index_t;
/* For quick substitution checks, look up these common identifiers
once only. */
static GTY(()) tree subst_identifiers[SUBID_MAX];
/* Single-letter codes for builtin integer types, defined in
<builtin-type>. These are indexed by integer_type_kind values. */
static const char
integer_type_codes[itk_none] =
{
'c', /* itk_char */
'a', /* itk_signed_char */
'h', /* itk_unsigned_char */
's', /* itk_short */
't', /* itk_unsigned_short */
'i', /* itk_int */
'j', /* itk_unsigned_int */
'l', /* itk_long */
'm', /* itk_unsigned_long */
'x', /* itk_long_long */
'y', /* itk_unsigned_long_long */
/* __intN types are handled separately */
'\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0'
};
static int decl_is_template_id (const tree, tree* const);
/* Functions for handling substitutions. */
static inline tree canonicalize_for_substitution (tree);
static void add_substitution (tree);
static inline int is_std_substitution (const tree,
const substitution_identifier_index_t);
static inline int is_std_substitution_char (const tree,
const substitution_identifier_index_t);
static int find_substitution (tree);
static void mangle_call_offset (const tree, const tree);
/* Functions for emitting mangled representations of things. */
static void write_mangled_name (const tree, bool);
static void write_encoding (const tree);
static void write_name (tree, const int);
static void write_abi_tags (tree);
static void write_unscoped_name (const tree);
static void write_unscoped_template_name (const tree);
static void write_nested_name (const tree);
static void write_prefix (const tree);
static void write_template_prefix (const tree);
static void write_unqualified_name (tree);
static void write_conversion_operator_name (const tree);
static void write_source_name (tree);
static void write_literal_operator_name (tree);
static void write_unnamed_type_name (const tree);
static void write_closure_type_name (const tree);
static int hwint_to_ascii (unsigned HOST_WIDE_INT, const unsigned int, char *,
const unsigned int);
static void write_number (unsigned HOST_WIDE_INT, const int,
const unsigned int);
static void write_compact_number (int num);
static void write_integer_cst (const tree);
static void write_real_cst (const tree);
static void write_identifier (const char *);
static void write_special_name_constructor (const tree);
static void write_special_name_destructor (const tree);
static void write_type (tree);
static int write_CV_qualifiers_for_type (const tree);
static void write_builtin_type (tree);
static void write_function_type (const tree);
static void write_bare_function_type (const tree, const int, const tree);
static void write_method_parms (tree, const int, const tree);
static void write_class_enum_type (const tree);
static void write_template_args (tree);
static void write_expression (tree);
static void write_template_arg_literal (const tree);
static void write_template_arg (tree);
static void write_template_template_arg (const tree);
static void write_array_type (const tree);
static void write_pointer_to_member_type (const tree);
static void write_template_param (const tree);
static void write_template_template_param (const tree);
static void write_substitution (const int);
static int discriminator_for_local_entity (tree);
static int discriminator_for_string_literal (tree, tree);
static void write_discriminator (const int);
static void write_local_name (tree, const tree, const tree);
static void dump_substitution_candidates (void);
static tree mangle_decl_string (const tree);
static int local_class_index (tree);
static void maybe_check_abi_tags (tree, tree = NULL_TREE, int = 10);
static bool equal_abi_tags (tree, tree);
/* Control functions. */
static inline void start_mangling (const tree);
static tree mangle_special_for_type (const tree, const char *);
/* Append a single character to the end of the mangled
representation. */
#define write_char(CHAR) \
obstack_1grow (mangle_obstack, (CHAR))
/* Append a sized buffer to the end of the mangled representation. */
#define write_chars(CHAR, LEN) \
obstack_grow (mangle_obstack, (CHAR), (LEN))
/* Append a NUL-terminated string to the end of the mangled
representation. */
#define write_string(STRING) \
obstack_grow (mangle_obstack, (STRING), strlen (STRING))
/* Nonzero if NODE1 and NODE2 are both TREE_LIST nodes and have the
same purpose (context, which may be a type) and value (template
decl). See write_template_prefix for more information on what this
is used for. */
#define NESTED_TEMPLATE_MATCH(NODE1, NODE2) \
(TREE_CODE (NODE1) == TREE_LIST \
&& TREE_CODE (NODE2) == TREE_LIST \
&& ((TYPE_P (TREE_PURPOSE (NODE1)) \
&& same_type_p (TREE_PURPOSE (NODE1), TREE_PURPOSE (NODE2))) \
|| TREE_PURPOSE (NODE1) == TREE_PURPOSE (NODE2)) \
&& TREE_VALUE (NODE1) == TREE_VALUE (NODE2))
/* Write out an unsigned quantity in base 10. */
#define write_unsigned_number(NUMBER) \
write_number ((NUMBER), /*unsigned_p=*/1, 10)
/* If DECL is a template instance (including the uninstantiated template
itself), return nonzero and, if TEMPLATE_INFO is non-NULL, set
*TEMPLATE_INFO to its template info. Otherwise return zero. */
static int
decl_is_template_id (const tree decl, tree* const template_info)
{
if (TREE_CODE (decl) == TYPE_DECL)
{
/* TYPE_DECLs are handled specially. Look at its type to decide
if this is a template instantiation. */
const tree type = TREE_TYPE (decl);
if (CLASS_TYPE_P (type) && CLASSTYPE_TEMPLATE_ID_P (type))
{
if (template_info != NULL)
/* For a templated TYPE_DECL, the template info is hanging
off the type. */
*template_info = TYPE_TEMPLATE_INFO (type);
return 1;
}
}
else
{
/* Check if this is a primary template. */
if (DECL_LANG_SPECIFIC (decl) != NULL
&& VAR_OR_FUNCTION_DECL_P (decl)
&& DECL_TEMPLATE_INFO (decl)
&& PRIMARY_TEMPLATE_P (DECL_TI_TEMPLATE (decl))
&& TREE_CODE (decl) != TEMPLATE_DECL)
{
if (template_info != NULL)
/* For most templated decls, the template info is hanging
off the decl. */
*template_info = DECL_TEMPLATE_INFO (decl);
return 1;
}
}
/* It's not a template id. */
return 0;
}
/* Produce debugging output of current substitution candidates. */
static void
dump_substitution_candidates (void)
{
unsigned i;
tree el;
fprintf (stderr, " ++ substitutions ");
FOR_EACH_VEC_ELT (*G.substitutions, i, el)
{
const char *name = "???";
if (i > 0)
fprintf (stderr, " ");
if (DECL_P (el))
name = IDENTIFIER_POINTER (DECL_NAME (el));
else if (TREE_CODE (el) == TREE_LIST)
name = IDENTIFIER_POINTER (DECL_NAME (TREE_VALUE (el)));
else if (TYPE_NAME (el))
name = TYPE_NAME_STRING (el);
fprintf (stderr, " S%d_ = ", i - 1);
if (TYPE_P (el) &&
(CP_TYPE_RESTRICT_P (el)
|| CP_TYPE_VOLATILE_P (el)
|| CP_TYPE_CONST_P (el)))
fprintf (stderr, "CV-");
fprintf (stderr, "%s (%s at %p)\n",
name, get_tree_code_name (TREE_CODE (el)), (void *) el);
}
}
/* <exception-spec> ::=
Do -- non-throwing exception specification
DO <expression> E -- computed (instantiation-dependent) noexcept
Dw <type>* E -- throw (types) */
static void
write_exception_spec (tree spec)
{
if (!spec || spec == noexcept_false_spec)
/* Nothing. */
return;
if (!flag_noexcept_type)
{
G.need_cxx17_warning = true;
return;
}
if (spec == noexcept_true_spec || spec == empty_except_spec)
write_string ("Do");
else if (tree expr = TREE_PURPOSE (spec))
{
/* noexcept (expr) */
gcc_assert (uses_template_parms (expr));
write_string ("DO");
write_expression (expr);
write_char ('E');
}
else
{
/* throw (type-list) */
write_string ("Dw");
for (tree t = spec; t; t = TREE_CHAIN (t))
write_type (TREE_VALUE (t));
write_char ('E');
}
}
/* Both decls and types can be substitution candidates, but sometimes
they refer to the same thing. For instance, a TYPE_DECL and
RECORD_TYPE for the same class refer to the same thing, and should
be treated accordingly in substitutions. This function returns a
canonicalized tree node representing NODE that is used when adding
and substitution candidates and finding matches. */
static inline tree
canonicalize_for_substitution (tree node)
{
/* For a TYPE_DECL, use the type instead. */
if (TREE_CODE (node) == TYPE_DECL)
node = TREE_TYPE (node);
if (TYPE_P (node)
&& TYPE_CANONICAL (node) != node
&& TYPE_MAIN_VARIANT (node) != node)
{
tree orig = node;
/* Here we want to strip the topmost typedef only.
We need to do that so is_std_substitution can do proper
name matching. */
if (TREE_CODE (node) == FUNCTION_TYPE)
/* Use build_qualified_type and TYPE_QUALS here to preserve
the old buggy mangling of attribute noreturn with abi<5. */
node = build_qualified_type (TYPE_MAIN_VARIANT (node),
TYPE_QUALS (node));
else
node = cp_build_qualified_type (TYPE_MAIN_VARIANT (node),
cp_type_quals (node));
if (TREE_CODE (node) == FUNCTION_TYPE
|| TREE_CODE (node) == METHOD_TYPE)
{
node = build_ref_qualified_type (node, type_memfn_rqual (orig));
tree r = canonical_eh_spec (TYPE_RAISES_EXCEPTIONS (orig));
if (flag_noexcept_type)
node = build_exception_variant (node, r);
else
/* Set the warning flag if appropriate. */
write_exception_spec (r);
}
}
return node;
}
/* Add NODE as a substitution candidate. NODE must not already be on
the list of candidates. */
static void
add_substitution (tree node)
{
tree c;
if (DEBUG_MANGLE)
fprintf (stderr, " ++ add_substitution (%s at %10p)\n",
get_tree_code_name (TREE_CODE (node)), (void *) node);
/* Get the canonicalized substitution candidate for NODE. */
c = canonicalize_for_substitution (node);
if (DEBUG_MANGLE && c != node)
fprintf (stderr, " ++ using candidate (%s at %10p)\n",
get_tree_code_name (TREE_CODE (node)), (void *) node);
node = c;
/* Make sure NODE isn't already a candidate. */
if (flag_checking)
{
int i;
tree candidate;
FOR_EACH_VEC_SAFE_ELT (G.substitutions, i, candidate)
{
gcc_assert (!(DECL_P (node) && node == candidate));
gcc_assert (!(TYPE_P (node) && TYPE_P (candidate)
&& same_type_p (node, candidate)));
}
}
/* Put the decl onto the varray of substitution candidates. */
vec_safe_push (G.substitutions, node);
if (DEBUG_MANGLE)
dump_substitution_candidates ();
}
/* Helper function for find_substitution. Returns nonzero if NODE,
which may be a decl or a CLASS_TYPE, is a template-id with template
name of substitution_index[INDEX] in the ::std namespace. */
static inline int
is_std_substitution (const tree node,
const substitution_identifier_index_t index)
{
tree type = NULL;
tree decl = NULL;
if (DECL_P (node))
{
type = TREE_TYPE (node);
decl = node;
}
else if (CLASS_TYPE_P (node))
{
type = node;
decl = TYPE_NAME (node);
}
else
/* These are not the droids you're looking for. */
return 0;
return (DECL_NAMESPACE_STD_P (CP_DECL_CONTEXT (decl))
&& TYPE_LANG_SPECIFIC (type)
&& TYPE_TEMPLATE_INFO (type)
&& (DECL_NAME (TYPE_TI_TEMPLATE (type))
== subst_identifiers[index]));
}
/* Return the ABI tags (the TREE_VALUE of the "abi_tag" attribute entry) for T,
which can be a decl or type. */
static tree
get_abi_tags (tree t)
{
if (!t || TREE_CODE (t) == NAMESPACE_DECL)
return NULL_TREE;
if (DECL_P (t) && DECL_DECLARES_TYPE_P (t))
t = TREE_TYPE (t);
tree attrs;
if (TYPE_P (t))
attrs = TYPE_ATTRIBUTES (t);
else
attrs = DECL_ATTRIBUTES (t);
tree tags = lookup_attribute ("abi_tag", attrs);
if (tags)
tags = TREE_VALUE (tags);
return tags;
}
/* Helper function for find_substitution. Returns nonzero if NODE,
which may be a decl or a CLASS_TYPE, is the template-id
::std::identifier<char>, where identifier is
substitution_index[INDEX]. */
static inline int
is_std_substitution_char (const tree node,
const substitution_identifier_index_t index)
{
tree args;
/* Check NODE's name is ::std::identifier. */
if (!is_std_substitution (node, index))
return 0;
/* Figure out its template args. */
if (DECL_P (node))
args = DECL_TI_ARGS (node);
else if (CLASS_TYPE_P (node))
args = CLASSTYPE_TI_ARGS (node);
else
/* Oops, not a template. */
return 0;
/* NODE's template arg list should be <char>. */
return
TREE_VEC_LENGTH (args) == 1
&& TREE_VEC_ELT (args, 0) == char_type_node;
}
/* Check whether a substitution should be used to represent NODE in
the mangling.
First, check standard special-case substitutions.
<substitution> ::= St
# ::std
::= Sa
# ::std::allocator
::= Sb
# ::std::basic_string
::= Ss
# ::std::basic_string<char,
::std::char_traits<char>,
::std::allocator<char> >
::= Si
# ::std::basic_istream<char, ::std::char_traits<char> >
::= So
# ::std::basic_ostream<char, ::std::char_traits<char> >
::= Sd
# ::std::basic_iostream<char, ::std::char_traits<char> >
Then examine the stack of currently available substitution
candidates for entities appearing earlier in the same mangling
If a substitution is found, write its mangled representation and
return nonzero. If none is found, just return zero. */
static int
find_substitution (tree node)
{
int i;
const int size = vec_safe_length (G.substitutions);
tree decl;
tree type;
const char *abbr = NULL;
if (DEBUG_MANGLE)
fprintf (stderr, " ++ find_substitution (%s at %p)\n",
get_tree_code_name (TREE_CODE (node)), (void *) node);
/* Obtain the canonicalized substitution representation for NODE.
This is what we'll compare against. */
node = canonicalize_for_substitution (node);
/* Check for builtin substitutions. */
decl = TYPE_P (node) ? TYPE_NAME (node) : node;
type = TYPE_P (node) ? node : TREE_TYPE (node);
/* Check for std::allocator. */
if (decl
&& is_std_substitution (decl, SUBID_ALLOCATOR)
&& !CLASSTYPE_USE_TEMPLATE (TREE_TYPE (decl)))
abbr = "Sa";
/* Check for std::basic_string. */
else if (decl && is_std_substitution (decl, SUBID_BASIC_STRING))
{
if (TYPE_P (node))
{
/* If this is a type (i.e. a fully-qualified template-id),
check for
std::basic_string <char,
std::char_traits<char>,
std::allocator<char> > . */
if (cp_type_quals (type) == TYPE_UNQUALIFIED
&& CLASSTYPE_USE_TEMPLATE (type))
{
tree args = CLASSTYPE_TI_ARGS (type);
if (TREE_VEC_LENGTH (args) == 3
&& same_type_p (TREE_VEC_ELT (args, 0), char_type_node)
&& is_std_substitution_char (TREE_VEC_ELT (args, 1),
SUBID_CHAR_TRAITS)
&& is_std_substitution_char (TREE_VEC_ELT (args, 2),
SUBID_ALLOCATOR))
abbr = "Ss";
}
}
else
/* Substitute for the template name only if this isn't a type. */
abbr = "Sb";
}
/* Check for basic_{i,o,io}stream. */
else if (TYPE_P (node)
&& cp_type_quals (type) == TYPE_UNQUALIFIED
&& CLASS_TYPE_P (type)
&& CLASSTYPE_USE_TEMPLATE (type)
&& CLASSTYPE_TEMPLATE_INFO (type) != NULL)
{
/* First, check for the template
args <char, std::char_traits<char> > . */
tree args = CLASSTYPE_TI_ARGS (type);
if (TREE_VEC_LENGTH (args) == 2
&& TYPE_P (TREE_VEC_ELT (args, 0))
&& same_type_p (TREE_VEC_ELT (args, 0), char_type_node)
&& is_std_substitution_char (TREE_VEC_ELT (args, 1),
SUBID_CHAR_TRAITS))
{
/* Got them. Is this basic_istream? */
if (is_std_substitution (decl, SUBID_BASIC_ISTREAM))
abbr = "Si";
/* Or basic_ostream? */
else if (is_std_substitution (decl, SUBID_BASIC_OSTREAM))
abbr = "So";
/* Or basic_iostream? */
else if (is_std_substitution (decl, SUBID_BASIC_IOSTREAM))
abbr = "Sd";
}
}
/* Check for namespace std. */
else if (decl && DECL_NAMESPACE_STD_P (decl))
{
write_string ("St");
return 1;
}
tree tags = NULL_TREE;
if (OVERLOAD_TYPE_P (node) || DECL_CLASS_TEMPLATE_P (node))
tags = get_abi_tags (type);
/* Now check the list of available substitutions for this mangling
operation. */
if (!abbr || tags) for (i = 0; i < size; ++i)
{
tree candidate = (*G.substitutions)[i];
/* NODE is a matched to a candidate if it's the same decl node or
if it's the same type. */
if (decl == candidate
|| (TYPE_P (candidate) && type && TYPE_P (node)
&& same_type_p (type, candidate))
|| NESTED_TEMPLATE_MATCH (node, candidate))
{
write_substitution (i);
return 1;
}
}
if (!abbr)
/* No substitution found. */
return 0;
write_string (abbr);
if (tags)
{
/* If there are ABI tags on the abbreviation, it becomes
a substitution candidate. */
write_abi_tags (tags);
add_substitution (node);
}
return 1;
}
/* Returns whether DECL's symbol name should be the plain unqualified-id
rather than a more complicated mangled name. */
static bool
unmangled_name_p (const tree decl)
{
if (TREE_CODE (decl) == FUNCTION_DECL)
{
/* The names of `extern "C"' functions are not mangled. */
return (DECL_EXTERN_C_FUNCTION_P (decl)
/* But overloaded operator names *are* mangled. */
&& !DECL_OVERLOADED_OPERATOR_P (decl));
}
else if (VAR_P (decl))
{
/* static variables are mangled. */
if (!DECL_EXTERNAL_LINKAGE_P (decl))
return false;
/* extern "C" declarations aren't mangled. */
if (DECL_EXTERN_C_P (decl))
return true;
/* Other variables at non-global scope are mangled. */
if (CP_DECL_CONTEXT (decl) != global_namespace)
return false;
/* Variable template instantiations are mangled. */
if (DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl)
&& variable_template_p (DECL_TI_TEMPLATE (decl)))
return false;
/* Declarations with ABI tags are mangled. */
if (get_abi_tags (decl))
return false;
/* The names of non-static global variables aren't mangled. */
return true;
}
return false;
}
/* TOP_LEVEL is true, if this is being called at outermost level of
mangling. It should be false when mangling a decl appearing in an
expression within some other mangling.
<mangled-name> ::= _Z <encoding> */
static void
write_mangled_name (const tree decl, bool top_level)
{
MANGLE_TRACE_TREE ("mangled-name", decl);
check_abi_tags (decl);
if (unmangled_name_p (decl))
{
if (top_level)
write_string (IDENTIFIER_POINTER (DECL_NAME (decl)));
else
{
/* The standard notes: "The <encoding> of an extern "C"
function is treated like global-scope data, i.e. as its
<source-name> without a type." We cannot write
overloaded operators that way though, because it contains
characters invalid in assembler. */
write_string ("_Z");
write_source_name (DECL_NAME (decl));
}
}
else
{
write_string ("_Z");
write_encoding (decl);
}
}
/* Returns true if the return type of DECL is part of its signature, and
therefore its mangling. */
bool
mangle_return_type_p (tree decl)
{
return (!DECL_CONSTRUCTOR_P (decl)
&& !DECL_DESTRUCTOR_P (decl)
&& !DECL_CONV_FN_P (decl)
&& decl_is_template_id (decl, NULL));
}
/* <encoding> ::= <function name> <bare-function-type>
::= <data name> */
static void
write_encoding (const tree decl)
{
MANGLE_TRACE_TREE ("encoding", decl);
if (DECL_LANG_SPECIFIC (decl) && DECL_EXTERN_C_FUNCTION_P (decl))
{
/* For overloaded operators write just the mangled name
without arguments. */
if (DECL_OVERLOADED_OPERATOR_P (decl))
write_name (decl, /*ignore_local_scope=*/0);
else
write_source_name (DECL_NAME (decl));
return;
}
write_name (decl, /*ignore_local_scope=*/0);
if (TREE_CODE (decl) == FUNCTION_DECL)
{
tree fn_type;
tree d;
bool tmpl = decl_is_template_id (decl, NULL);
if (tmpl)
{
fn_type = get_mostly_instantiated_function_type (decl);
/* FN_TYPE will not have parameter types for in-charge or
VTT parameters. Therefore, we pass NULL_TREE to
write_bare_function_type -- otherwise, it will get
confused about which artificial parameters to skip. */
d = NULL_TREE;
}
else
{
fn_type = TREE_TYPE (decl);
d = decl;
}
write_bare_function_type (fn_type,
mangle_return_type_p (decl),
d);
}
}
/* Lambdas can have a bit more context for mangling, specifically VAR_DECL
or PARM_DECL context, which doesn't belong in DECL_CONTEXT. */
static tree
decl_mangling_context (tree decl)
{
tree tcontext = targetm.cxx.decl_mangling_context (decl);
if (tcontext != NULL_TREE)
return tcontext;
if (TREE_CODE (decl) == TEMPLATE_DECL
&& DECL_TEMPLATE_RESULT (decl))
decl = DECL_TEMPLATE_RESULT (decl);
if (TREE_CODE (decl) == TYPE_DECL
&& LAMBDA_TYPE_P (TREE_TYPE (decl)))
{
tree extra = LAMBDA_TYPE_EXTRA_SCOPE (TREE_TYPE (decl));
if (extra)
return extra;
}
else if (template_type_parameter_p (decl))
/* template type parms have no mangling context. */
return NULL_TREE;
return CP_DECL_CONTEXT (decl);
}
/* <name> ::= <unscoped-name>
::= <unscoped-template-name> <template-args>
::= <nested-name>
::= <local-name>
If IGNORE_LOCAL_SCOPE is nonzero, this production of <name> is
called from <local-name>, which mangles the enclosing scope
elsewhere and then uses this function to mangle just the part
underneath the function scope. So don't use the <local-name>
production, to avoid an infinite recursion. */
static void
write_name (tree decl, const int ignore_local_scope)
{
tree context;
MANGLE_TRACE_TREE ("name", decl);
if (TREE_CODE (decl) == TYPE_DECL)
{
/* In case this is a typedef, fish out the corresponding
TYPE_DECL for the main variant. */
decl = TYPE_NAME (TYPE_MAIN_VARIANT (TREE_TYPE (decl)));
}
context = decl_mangling_context (decl);
gcc_assert (context != NULL_TREE);
if (abi_warn_or_compat_version_crosses (7)
&& ignore_local_scope
&& TREE_CODE (context) == PARM_DECL)
G.need_abi_warning = 1;
/* A decl in :: or ::std scope is treated specially. The former is
mangled using <unscoped-name> or <unscoped-template-name>, the
latter with a special substitution. Also, a name that is
directly in a local function scope is also mangled with
<unscoped-name> rather than a full <nested-name>. */
if (context == global_namespace
|| DECL_NAMESPACE_STD_P (context)
|| (ignore_local_scope
&& (TREE_CODE (context) == FUNCTION_DECL
|| (abi_version_at_least (7)
&& TREE_CODE (context) == PARM_DECL))))
{
tree template_info;
/* Is this a template instance? */
if (decl_is_template_id (decl, &template_info))
{
/* Yes: use <unscoped-template-name>. */
write_unscoped_template_name (TI_TEMPLATE (template_info));
write_template_args (TI_ARGS (template_info));
}
else
/* Everything else gets an <unqualified-name>. */
write_unscoped_name (decl);
}
else
{
/* Handle local names, unless we asked not to (that is, invoked
under <local-name>, to handle only the part of the name under
the local scope). */
if (!ignore_local_scope)
{
/* Scan up the list of scope context, looking for a
function. If we find one, this entity is in local
function scope. local_entity tracks context one scope
level down, so it will contain the element that's
directly in that function's scope, either decl or one of
its enclosing scopes. */
tree local_entity = decl;
while (context != global_namespace)
{
/* Make sure we're always dealing with decls. */
if (TYPE_P (context))
context = TYPE_NAME (context);
/* Is this a function? */
if (TREE_CODE (context) == FUNCTION_DECL
|| TREE_CODE (context) == PARM_DECL)
{
/* Yes, we have local scope. Use the <local-name>
production for the innermost function scope. */
write_local_name (context, local_entity, decl);
return;
}
/* Up one scope level. */
local_entity = context;
context = decl_mangling_context (context);
}
/* No local scope found? Fall through to <nested-name>. */
}
/* Other decls get a <nested-name> to encode their scope. */
write_nested_name (decl);
}
}
/* <unscoped-name> ::= <unqualified-name>
::= St <unqualified-name> # ::std:: */
static void
write_unscoped_name (const tree decl)
{
tree context = decl_mangling_context (decl);
MANGLE_TRACE_TREE ("unscoped-name", decl);
/* Is DECL in ::std? */
if (DECL_NAMESPACE_STD_P (context))
{
write_string ("St");
write_unqualified_name (decl);
}
else
{
/* If not, it should be either in the global namespace, or directly
in a local function scope. A lambda can also be mangled in the
scope of a default argument. */
gcc_assert (context == global_namespace
|| TREE_CODE (context) == PARM_DECL
|| TREE_CODE (context) == FUNCTION_DECL);
write_unqualified_name (decl);
}
}
/* <unscoped-template-name> ::= <unscoped-name>
::= <substitution> */
static void
write_unscoped_template_name (const tree decl)
{
MANGLE_TRACE_TREE ("unscoped-template-name", decl);
if (find_substitution (decl))
return;
write_unscoped_name (decl);
add_substitution (decl);
}
/* Write the nested name, including CV-qualifiers, of DECL.
<nested-name> ::= N [<CV-qualifiers>] [<ref-qualifier>] <prefix> <unqualified-name> E
::= N [<CV-qualifiers>] [<ref-qualifier>] <template-prefix> <template-args> E
<ref-qualifier> ::= R # & ref-qualifier
::= O # && ref-qualifier
<CV-qualifiers> ::= [r] [V] [K] */
static void
write_nested_name (const tree decl)
{
tree template_info;
MANGLE_TRACE_TREE ("nested-name", decl);
write_char ('N');
/* Write CV-qualifiers, if this is a member function. */
if (TREE_CODE (decl) == FUNCTION_DECL
&& DECL_NONSTATIC_MEMBER_FUNCTION_P (decl))
{
if (DECL_VOLATILE_MEMFUNC_P (decl))
write_char ('V');
if (DECL_CONST_MEMFUNC_P (decl))
write_char ('K');
if (FUNCTION_REF_QUALIFIED (TREE_TYPE (decl)))
{
if (FUNCTION_RVALUE_QUALIFIED (TREE_TYPE (decl)))
write_char ('O');
else
write_char ('R');
}
}
/* Is this a template instance? */
if (decl_is_template_id (decl, &template_info))
{
/* Yes, use <template-prefix>. */
write_template_prefix (decl);
write_template_args (TI_ARGS (template_info));
}
else if ((!abi_version_at_least (10) || TREE_CODE (decl) == TYPE_DECL)
&& TREE_CODE (TREE_TYPE (decl)) == TYPENAME_TYPE)
{
tree name = TYPENAME_TYPE_FULLNAME (TREE_TYPE (decl));
if (TREE_CODE (name) == TEMPLATE_ID_EXPR)
{
write_template_prefix (decl);
write_template_args (TREE_OPERAND (name, 1));
}
else
{
write_prefix (decl_mangling_context (decl));
write_unqualified_name (decl);
}
}
else
{
/* No, just use <prefix> */
write_prefix (decl_mangling_context (decl));
write_unqualified_name (decl);
}
write_char ('E');
}
/* <prefix> ::= <prefix> <unqualified-name>
::= <template-param>
::= <template-prefix> <template-args>
::= <decltype>
::= # empty
::= <substitution> */
static void
write_prefix (const tree node)
{
tree decl;
/* Non-NULL if NODE represents a template-id. */
tree template_info = NULL;
if (node == NULL
|| node == global_namespace)
return;
MANGLE_TRACE_TREE ("prefix", node);
if (TREE_CODE (node) == DECLTYPE_TYPE)
{
write_type (node);
return;
}
if (find_substitution (node))
return;
if (DECL_P (node))
{
/* If this is a function or parm decl, that means we've hit function
scope, so this prefix must be for a local name. In this
case, we're under the <local-name> production, which encodes
the enclosing function scope elsewhere. So don't continue
here. */
if (TREE_CODE (node) == FUNCTION_DECL
|| TREE_CODE (node) == PARM_DECL)
return;
decl = node;
decl_is_template_id (decl, &template_info);
}
else
{
/* Node is a type. */
decl = TYPE_NAME (node);
if (CLASSTYPE_TEMPLATE_ID_P (node))
template_info = TYPE_TEMPLATE_INFO (node);
}
if (TREE_CODE (node) == TEMPLATE_TYPE_PARM)
write_template_param (node);
else if (template_info != NULL)
/* Templated. */
{
write_template_prefix (decl);
write_template_args (TI_ARGS (template_info));
}
else if (TREE_CODE (TREE_TYPE (decl)) == TYPENAME_TYPE)
{
tree name = TYPENAME_TYPE_FULLNAME (TREE_TYPE (decl));
if (TREE_CODE (name) == TEMPLATE_ID_EXPR)
{
write_template_prefix (decl);
write_template_args (TREE_OPERAND (name, 1));
}
else
{
write_prefix (decl_mangling_context (decl));
write_unqualified_name (decl);
}
}
else
/* Not templated. */
{
write_prefix (decl_mangling_context (decl));
write_unqualified_name (decl);
if (VAR_P (decl)
|| TREE_CODE (decl) == FIELD_DECL)
{
/* <data-member-prefix> := <member source-name> M */
write_char ('M');
return;
}
}
add_substitution (node);
}
/* <template-prefix> ::= <prefix> <template component>
::= <template-param>
::= <substitution> */
static void
write_template_prefix (const tree node)
{
tree decl = DECL_P (node) ? node : TYPE_NAME (node);
tree type = DECL_P (node) ? TREE_TYPE (node) : node;
tree context = decl_mangling_context (decl);
tree template_info;
tree templ;
tree substitution;
MANGLE_TRACE_TREE ("template-prefix", node);
/* Find the template decl. */
if (decl_is_template_id (decl, &template_info))
templ = TI_TEMPLATE (template_info);
else if (TREE_CODE (type) == TYPENAME_TYPE)
/* For a typename type, all we have is the name. */
templ = DECL_NAME (decl);
else
{
gcc_assert (CLASSTYPE_TEMPLATE_ID_P (type));
templ = TYPE_TI_TEMPLATE (type);
}
/* For a member template, though, the template name for the
innermost name must have all the outer template levels
instantiated. For instance, consider
template<typename T> struct Outer {
template<typename U> struct Inner {};
};
The template name for `Inner' in `Outer<int>::Inner<float>' is
`Outer<int>::Inner<U>'. In g++, we don't instantiate the template
levels separately, so there's no TEMPLATE_DECL available for this
(there's only `Outer<T>::Inner<U>').
In order to get the substitutions right, we create a special
TREE_LIST to represent the substitution candidate for a nested
template. The TREE_PURPOSE is the template's context, fully
instantiated, and the TREE_VALUE is the TEMPLATE_DECL for the inner
template.
So, for the example above, `Outer<int>::Inner' is represented as a
substitution candidate by a TREE_LIST whose purpose is `Outer<int>'
and whose value is `Outer<T>::Inner<U>'. */
if (context && TYPE_P (context))
substitution = build_tree_list (context, templ);
else
substitution = templ;
if (find_substitution (substitution))
return;
if (TREE_TYPE (templ)
&& TREE_CODE (TREE_TYPE (templ)) == TEMPLATE_TEMPLATE_PARM)
write_template_param (TREE_TYPE (templ));
else
{
write_prefix (context);
write_unqualified_name (decl);
}
add_substitution (substitution);
}
/* As the list of identifiers for the structured binding declaration
DECL is likely gone, try to recover the DC <source-name>+ E portion
from its mangled name. Return pointer to the DC and set len to
the length up to and including the terminating E. On failure
return NULL. */
static const char *
find_decomp_unqualified_name (tree decl, size_t *len)
{
const char *p = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
const char *end = p + IDENTIFIER_LENGTH (DECL_ASSEMBLER_NAME (decl));
bool nested = false;
if (strncmp (p, "_Z", 2))
return NULL;
p += 2;
if (!strncmp (p, "St", 2))
p += 2;
else if (*p == 'N')
{
nested = true;
++p;
while (ISDIGIT (p[0]))
{
char *e;
long num = strtol (p, &e, 10);
if (num >= 1 && num < end - e)
p = e + num;
else
break;
}
}
if (strncmp (p, "DC", 2))
return NULL;
if (nested)
{
if (end[-1] != 'E')
return NULL;
--end;
}
if (end[-1] != 'E')
return NULL;
*len = end - p;
return p;
}
/* We don't need to handle thunks, vtables, or VTTs here. Those are
mangled through special entry points.
<unqualified-name> ::= <operator-name>
::= <special-name>
::= <source-name>
::= <unnamed-type-name>
::= <local-source-name>
<local-source-name> ::= L <source-name> <discriminator> */
static void
write_unqualified_id (tree identifier)
{
if (IDENTIFIER_CONV_OP_P (identifier))
write_conversion_operator_name (TREE_TYPE (identifier));
else if (IDENTIFIER_OVL_OP_P (identifier))
{
const ovl_op_info_t *ovl_op = IDENTIFIER_OVL_OP_INFO (identifier);
write_string (ovl_op->mangled_name);
}
else if (UDLIT_OPER_P (identifier))
write_literal_operator_name (identifier);
else
write_source_name (identifier);
}
static void
write_unqualified_name (tree decl)
{
MANGLE_TRACE_TREE ("unqualified-name", decl);
if (identifier_p (decl))
{
write_unqualified_id (decl);
return;
}
bool found = false;
if (DECL_NAME (decl) == NULL_TREE)
{
found = true;
gcc_assert (DECL_ASSEMBLER_NAME_SET_P (decl));
const char *decomp_str = NULL;
size_t decomp_len = 0;
if (VAR_P (decl)
&& DECL_DECOMPOSITION_P (decl)
&& DECL_NAME (decl) == NULL_TREE
&& DECL_NAMESPACE_SCOPE_P (decl))
decomp_str = find_decomp_unqualified_name (decl, &decomp_len);
if (decomp_str)
write_chars (decomp_str, decomp_len);
else
write_source_name (DECL_ASSEMBLER_NAME (decl));
}
else if (DECL_DECLARES_FUNCTION_P (decl))
{
found = true;
if (DECL_CONSTRUCTOR_P (decl))
write_special_name_constructor (decl);
else if (DECL_DESTRUCTOR_P (decl))
write_special_name_destructor (decl);
else if (DECL_CONV_FN_P (decl))
{
/* Conversion operator. Handle it right here.
<operator> ::= cv <type> */
tree type;
if (decl_is_template_id (decl, NULL))
{
tree fn_type;
fn_type = get_mostly_instantiated_function_type (decl);
type = TREE_TYPE (fn_type);
}
else if (FNDECL_USED_AUTO (decl))
type = (DECL_STRUCT_FUNCTION (decl)->language
->x_auto_return_pattern);
else
type = DECL_CONV_FN_TYPE (decl);
write_conversion_operator_name (type);
}
else if (DECL_OVERLOADED_OPERATOR_P (decl))
{
const char *mangled_name
= (ovl_op_info[DECL_ASSIGNMENT_OPERATOR_P (decl)]
[DECL_OVERLOADED_OPERATOR_CODE_RAW (decl)].mangled_name);
write_string (mangled_name);
}
else if (UDLIT_OPER_P (DECL_NAME (decl)))
write_literal_operator_name (DECL_NAME (decl));
else
found = false;
}
if (found)
/* OK */;
else if (VAR_OR_FUNCTION_DECL_P (decl) && ! TREE_PUBLIC (decl)
&& DECL_NAMESPACE_SCOPE_P (decl)
&& decl_linkage (decl) == lk_internal)
{
MANGLE_TRACE_TREE ("local-source-name", decl);
write_char ('L');
write_source_name (DECL_NAME (decl));
/* The default discriminator is 1, and that's all we ever use,
so there's no code to output one here. */
}
else
{
tree type = TREE_TYPE (decl);
if (TREE_CODE (decl) == TYPE_DECL
&& TYPE_UNNAMED_P (type))
write_unnamed_type_name (type);
else if (TREE_CODE (decl) == TYPE_DECL
&& LAMBDA_TYPE_P (type))
write_closure_type_name (type);
else
write_source_name (DECL_NAME (decl));
}
/* We use the ABI tags from the primary class template, ignoring tags on any
specializations. This is necessary because C++ doesn't require a
specialization to be declared before it is used unless the use requires a
complete type, but we need to get the tags right on incomplete types as
well. */
if (tree tmpl = most_general_template (decl))
{
tree res = DECL_TEMPLATE_RESULT (tmpl);
if (res == NULL_TREE)
/* UNBOUND_CLASS_TEMPLATE. */;
else if (DECL_DECLARES_TYPE_P (decl))
decl = res;
else if (any_abi_below (11))
{
/* ABI v10 implicit tags on the template. */
tree mtags = missing_abi_tags (res);
/* Explicit tags on the template. */
tree ttags = get_abi_tags (res);
/* Tags on the instantiation. */
tree dtags = get_abi_tags (decl);
if (mtags && abi_warn_or_compat_version_crosses (10))
G.need_abi_warning = 1;
/* Add the v10 tags to the explicit tags now. */
mtags = chainon (mtags, ttags);
if (!G.need_abi_warning
&& abi_warn_or_compat_version_crosses (11)
&& !equal_abi_tags (dtags, mtags))
G.need_abi_warning = 1;
if (!abi_version_at_least (10))
/* In abi <10, we only got the explicit tags. */
decl = res;
else if (flag_abi_version == 10)
{
/* In ABI 10, we want explict and implicit tags. */
write_abi_tags (mtags);
return;
}
}
}
tree tags = get_abi_tags (decl);
if (TREE_CODE (decl) == FUNCTION_DECL && DECL_CONV_FN_P (decl)
&& any_abi_below (11))
if (tree mtags = missing_abi_tags (decl))
{
if (abi_warn_or_compat_version_crosses (11))
G.need_abi_warning = true;
if (!abi_version_at_least (11))
tags = chainon (mtags, tags);
}
write_abi_tags (tags);
}
/* Write the unqualified-name for a conversion operator to TYPE. */
static void
write_conversion_operator_name (const tree type)
{
write_string ("cv");
write_type (type);
}
/* Non-terminal <source-name>. IDENTIFIER is an IDENTIFIER_NODE.
<source-name> ::= </length/ number> <identifier> */
static void
write_source_name (tree identifier)
{
MANGLE_TRACE_TREE ("source-name", identifier);
write_unsigned_number (IDENTIFIER_LENGTH (identifier));
write_identifier (IDENTIFIER_POINTER (identifier));
}
/* Compare two TREE_STRINGs like strcmp. */
int
tree_string_cmp (const void *p1, const void *p2)
{
if (p1 == p2)
return 0;
tree s1 = *(const tree*)p1;
tree s2 = *(const tree*)p2;
return strcmp (TREE_STRING_POINTER (s1),
TREE_STRING_POINTER (s2));
}
/* Return the TREE_LIST of TAGS as a sorted VEC. */
static vec<tree, va_gc> *
sorted_abi_tags (tree tags)
{
vec<tree, va_gc> * vec = make_tree_vector();
for (tree t = tags; t; t = TREE_CHAIN (t))
{
if (ABI_TAG_IMPLICIT (t))
continue;
tree str = TREE_VALUE (t);
vec_safe_push (vec, str);
}
vec->qsort (tree_string_cmp);
return vec;
}
/* ID is the name of a function or type with abi_tags attribute TAGS.
Write out the name, suitably decorated. */
static void
write_abi_tags (tree tags)
{
if (tags == NULL_TREE)
return;
vec<tree, va_gc> * vec = sorted_abi_tags (tags);
unsigned i; tree str;
FOR_EACH_VEC_ELT (*vec, i, str)
{
write_string ("B");
write_unsigned_number (TREE_STRING_LENGTH (str) - 1);
write_identifier (TREE_STRING_POINTER (str));
}
release_tree_vector (vec);
}
/* Simplified unique_ptr clone to release a tree vec on exit. */
struct releasing_vec
{
typedef vec<tree, va_gc> vec_t;
releasing_vec (vec_t *v): v(v) { }
releasing_vec (): v(make_tree_vector ()) { }
vec_t &operator* () const { return *v; }
vec_t *operator-> () const { return v; }
vec_t *get () const { return v; }
operator vec_t *() const { return v; }
tree& operator[] (unsigned i) const { return (*v)[i]; }
~releasing_vec() { release_tree_vector (v); }
private:
vec_t *v;
};
/* True iff the TREE_LISTS T1 and T2 of ABI tags are equivalent. */
static bool
equal_abi_tags (tree t1, tree t2)
{
releasing_vec v1 = sorted_abi_tags (t1);
releasing_vec v2 = sorted_abi_tags (t2);
unsigned len1 = v1->length();
if (len1 != v2->length())
return false;
for (unsigned i = 0; i < len1; ++i)
if (tree_string_cmp (v1[i], v2[i]) != 0)
return false;
return true;
}
/* Write a user-defined literal operator.
::= li <source-name> # "" <source-name>
IDENTIFIER is an LITERAL_IDENTIFIER_NODE. */
static void
write_literal_operator_name (tree identifier)
{
const char* suffix = UDLIT_OP_SUFFIX (identifier);
write_identifier (UDLIT_OP_MANGLED_PREFIX);
write_unsigned_number (strlen (suffix));
write_identifier (suffix);
}
/* Encode 0 as _, and 1+ as n-1_. */
static void
write_compact_number (int num)
{
if (num > 0)
write_unsigned_number (num - 1);
write_char ('_');
}
/* Return how many unnamed types precede TYPE in its enclosing class. */
static int
nested_anon_class_index (tree type)
{
int index = 0;
tree member = TYPE_FIELDS (TYPE_CONTEXT (type));
for (; member; member = DECL_CHAIN (member))
if (DECL_IMPLICIT_TYPEDEF_P (member))
{
tree memtype = TREE_TYPE (member);
if (memtype == type)
return index;
else if (TYPE_UNNAMED_P (memtype))
++index;
}
if (seen_error ())
return -1;
gcc_unreachable ();
}
/* <unnamed-type-name> ::= Ut [ <nonnegative number> ] _ */
static void
write_unnamed_type_name (const tree type)
{
int discriminator;
MANGLE_TRACE_TREE ("unnamed-type-name", type);
if (TYPE_FUNCTION_SCOPE_P (type))
discriminator = local_class_index (type);
else if (TYPE_CLASS_SCOPE_P (type))
discriminator = nested_anon_class_index (type);
else
{
gcc_assert (no_linkage_check (type, /*relaxed_p=*/true));
/* Just use the old mangling at namespace scope. */
write_source_name (TYPE_IDENTIFIER (type));
return;
}
write_string ("Ut");
write_compact_number (discriminator);
}
/* <closure-type-name> ::= Ul <lambda-sig> E [ <nonnegative number> ] _
<lambda-sig> ::= <parameter type>+ # Parameter types or "v" if the lambda has no parameters */
static void
write_closure_type_name (const tree type)
{
tree fn = lambda_function (type);
tree lambda = CLASSTYPE_LAMBDA_EXPR (type);
tree parms = TYPE_ARG_TYPES (TREE_TYPE (fn));
MANGLE_TRACE_TREE ("closure-type-name", type);
write_string ("Ul");
write_method_parms (parms, /*method_p=*/1, fn);
write_char ('E');
write_compact_number (LAMBDA_EXPR_DISCRIMINATOR (lambda));
}
/* Convert NUMBER to ascii using base BASE and generating at least
MIN_DIGITS characters. BUFFER points to the _end_ of the buffer
into which to store the characters. Returns the number of
characters generated (these will be laid out in advance of where
BUFFER points). */
static int
hwint_to_ascii (unsigned HOST_WIDE_INT number, const unsigned int base,
char *buffer, const unsigned int min_digits)
{
static const char base_digits[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
unsigned digits = 0;
while (number)
{
unsigned HOST_WIDE_INT d = number / base;
*--buffer = base_digits[number - d * base];
digits++;
number = d;
}
while (digits < min_digits)
{
*--buffer = base_digits[0];
digits++;
}
return digits;
}
/* Non-terminal <number>.
<number> ::= [n] </decimal integer/> */
static void
write_number (unsigned HOST_WIDE_INT number, const int unsigned_p,
const unsigned int base)
{
char buffer[sizeof (HOST_WIDE_INT) * 8];
unsigned count = 0;
if (!unsigned_p && (HOST_WIDE_INT) number < 0)
{
write_char ('n');
number = -((HOST_WIDE_INT) number);
}
count = hwint_to_ascii (number, base, buffer + sizeof (buffer), 1);
write_chars (buffer + sizeof (buffer) - count, count);
}
/* Write out an integral CST in decimal. Most numbers are small, and
representable in a HOST_WIDE_INT. Occasionally we'll have numbers
bigger than that, which we must deal with. */
static inline void
write_integer_cst (const tree cst)
{
int sign = tree_int_cst_sgn (cst);
widest_int abs_value = wi::abs (wi::to_widest (cst));
if (!wi::fits_uhwi_p (abs_value))
{
/* A bignum. We do this in chunks, each of which fits in a
HOST_WIDE_INT. */
char buffer[sizeof (HOST_WIDE_INT) * 8 * 2];
unsigned HOST_WIDE_INT chunk;
unsigned chunk_digits;
char *ptr = buffer + sizeof (buffer);
unsigned count = 0;
tree n, base, type;
int done;
/* HOST_WIDE_INT must be at least 32 bits, so 10^9 is
representable. */
chunk = 1000000000;
chunk_digits = 9;
if (sizeof (HOST_WIDE_INT) >= 8)
{
/* It is at least 64 bits, so 10^18 is representable. */
chunk_digits = 18;
chunk *= chunk;
}
type = c_common_signed_or_unsigned_type (1, TREE_TYPE (cst));
base = build_int_cstu (type, chunk);
n = wide_int_to_tree (type, wi::to_wide (cst));
if (sign < 0)
{
write_char ('n');
n = fold_build1_loc (input_location, NEGATE_EXPR, type, n);
}
do
{
tree d = fold_build2_loc (input_location, FLOOR_DIV_EXPR, type, n, base);
tree tmp = fold_build2_loc (input_location, MULT_EXPR, type, d, base);
unsigned c;
done = integer_zerop (d);
tmp = fold_build2_loc (input_location, MINUS_EXPR, type, n, tmp);
c = hwint_to_ascii (TREE_INT_CST_LOW (tmp), 10, ptr,
done ? 1 : chunk_digits);
ptr -= c;
count += c;
n = d;
}
while (!done);
write_chars (ptr, count);
}
else
{
/* A small num. */
if (sign < 0)
write_char ('n');
write_unsigned_number (abs_value.to_uhwi ());
}
}
/* Write out a floating-point literal.
"Floating-point literals are encoded using the bit pattern of the
target processor's internal representation of that number, as a
fixed-length lowercase hexadecimal string, high-order bytes first
(even if the target processor would store low-order bytes first).
The "n" prefix is not used for floating-point literals; the sign
bit is encoded with the rest of the number.
Here are some examples, assuming the IEEE standard representation
for floating point numbers. (Spaces are for readability, not
part of the encoding.)
1.0f Lf 3f80 0000 E
-1.0f Lf bf80 0000 E
1.17549435e-38f Lf 0080 0000 E
1.40129846e-45f Lf 0000 0001 E
0.0f Lf 0000 0000 E"
Caller is responsible for the Lx and the E. */
static void
write_real_cst (const tree value)
{
long target_real[4]; /* largest supported float */
/* Buffer for eight hex digits in a 32-bit number but big enough
even for 64-bit long to avoid warnings. */
char buffer[17];
int i, limit, dir;
tree type = TREE_TYPE (value);
int words = GET_MODE_BITSIZE (SCALAR_FLOAT_TYPE_MODE (type)) / 32;
real_to_target (target_real, &TREE_REAL_CST (value),
TYPE_MODE (type));
/* The value in target_real is in the target word order,
so we must write it out backward if that happens to be
little-endian. write_number cannot be used, it will
produce uppercase. */
if (FLOAT_WORDS_BIG_ENDIAN)
i = 0, limit = words, dir = 1;
else
i = words - 1, limit = -1, dir = -1;
for (; i != limit; i += dir)
{
sprintf (buffer, "%08lx", (unsigned long) target_real[i]);
write_chars (buffer, 8);
}
}
/* Non-terminal <identifier>.
<identifier> ::= </unqualified source code identifier> */
static void
write_identifier (const char *identifier)
{
MANGLE_TRACE ("identifier", identifier);
write_string (identifier);
}
/* Handle constructor productions of non-terminal <special-name>.
CTOR is a constructor FUNCTION_DECL.
<special-name> ::= C1 # complete object constructor
::= C2 # base object constructor
::= C3 # complete object allocating constructor
Currently, allocating constructors are never used. */
static void
write_special_name_constructor (const tree ctor)
{
write_char ('C');
bool new_inh = (flag_new_inheriting_ctors
&& DECL_INHERITED_CTOR (ctor));
if (new_inh)
write_char ('I');
if (DECL_BASE_CONSTRUCTOR_P (ctor))
write_char ('2');
/* This is the old-style "[unified]" constructor.
In some cases, we may emit this function and call
it from the clones in order to share code and save space. */
else if (DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (ctor))
write_char ('4');
else
{
gcc_assert (DECL_COMPLETE_CONSTRUCTOR_P (ctor));
write_char ('1');
}
if (new_inh)
write_type (DECL_INHERITED_CTOR_BASE (ctor));
}
/* Handle destructor productions of non-terminal <special-name>.
DTOR is a destructor FUNCTION_DECL.
<special-name> ::= D0 # deleting (in-charge) destructor
::= D1 # complete object (in-charge) destructor
::= D2 # base object (not-in-charge) destructor */
static void
write_special_name_destructor (const tree dtor)
{
if (DECL_DELETING_DESTRUCTOR_P (dtor))
write_string ("D0");
else if (DECL_BASE_DESTRUCTOR_P (dtor))
write_string ("D2");
else if (DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P (dtor))
/* This is the old-style "[unified]" destructor.
In some cases, we may emit this function and call
it from the clones in order to share code and save space. */
write_string ("D4");
else
{
gcc_assert (DECL_COMPLETE_DESTRUCTOR_P (dtor));
write_string ("D1");
}
}
/* Scan the vector of local classes and return how many others with the
same name (or same no name) and context precede ENTITY. */
static int
local_class_index (tree entity)
{
int ix, discriminator = 0;
tree name = (TYPE_UNNAMED_P (entity) ? NULL_TREE
: TYPE_IDENTIFIER (entity));
tree ctx = TYPE_CONTEXT (entity);
for (ix = 0; ; ix++)
{
tree type = (*local_classes)[ix];
if (type == entity)
return discriminator;
if (TYPE_CONTEXT (type) == ctx
&& (name ? TYPE_IDENTIFIER (type) == name
: TYPE_UNNAMED_P (type)))
++discriminator;
}
gcc_unreachable ();
}
/* Return the discriminator for ENTITY appearing inside
FUNCTION. The discriminator is the lexical ordinal of VAR among
entities with the same name in the same FUNCTION. */
static int
discriminator_for_local_entity (tree entity)
{
if (DECL_DISCRIMINATOR_P (entity))
{
if (DECL_DISCRIMINATOR_SET_P (entity))
return DECL_DISCRIMINATOR (entity);
else
/* The first entity with a particular name doesn't get
DECL_DISCRIMINATOR set up. */
return 0;
}
else if (TREE_CODE (entity) == TYPE_DECL)
{
/* Scan the list of local classes. */
entity = TREE_TYPE (entity);
/* Lambdas and unnamed types have their own discriminators. */
if (LAMBDA_TYPE_P (entity) || TYPE_UNNAMED_P (entity))
return 0;
return local_class_index (entity);
}
else
gcc_unreachable ();
}
/* Return the discriminator for STRING, a string literal used inside
FUNCTION. The discriminator is the lexical ordinal of STRING among
string literals used in FUNCTION. */
static int
discriminator_for_string_literal (tree /*function*/,
tree /*string*/)
{
/* For now, we don't discriminate amongst string literals. */
return 0;
}
/* <discriminator> := _ <number> # when number < 10
:= __ <number> _ # when number >= 10
The discriminator is used only for the second and later occurrences
of the same name within a single function. In this case <number> is
n - 2, if this is the nth occurrence, in lexical order. */
static void
write_discriminator (const int discriminator)
{
/* If discriminator is zero, don't write anything. Otherwise... */
if (discriminator > 0)
{
write_char ('_');
if (discriminator - 1 >= 10)
{
if (abi_warn_or_compat_version_crosses (11))
G.need_abi_warning = 1;
if (abi_version_at_least (11))
write_char ('_');
}
write_unsigned_number (discriminator - 1);
if (abi_version_at_least (11) && discriminator - 1 >= 10)
write_char ('_');
}
}
/* Mangle the name of a function-scope entity. FUNCTION is the
FUNCTION_DECL for the enclosing function, or a PARM_DECL for lambdas in
default argument scope. ENTITY is the decl for the entity itself.
LOCAL_ENTITY is the entity that's directly scoped in FUNCTION_DECL,
either ENTITY itself or an enclosing scope of ENTITY.
<local-name> := Z <function encoding> E <entity name> [<discriminator>]
:= Z <function encoding> E s [<discriminator>]
:= Z <function encoding> Ed [ <parameter number> ] _ <entity name> */
static void
write_local_name (tree function, const tree local_entity,
const tree entity)
{
tree parm = NULL_TREE;
MANGLE_TRACE_TREE ("local-name", entity);
if (TREE_CODE (function) == PARM_DECL)
{
parm = function;
function = DECL_CONTEXT (parm);
}
write_char ('Z');
write_encoding (function);
write_char ('E');
/* For this purpose, parameters are numbered from right-to-left. */
if (parm)
{
tree t;
int i = 0;
for (t = DECL_ARGUMENTS (function); t; t = DECL_CHAIN (t))
{
if (t == parm)
i = 1;
else if (i)
++i;
}
write_char ('d');
write_compact_number (i - 1);
}
if (TREE_CODE (entity) == STRING_CST)
{
write_char ('s');
write_discriminator (discriminator_for_string_literal (function,
entity));
}
else
{
/* Now the <entity name>. Let write_name know its being called
from <local-name>, so it doesn't try to process the enclosing
function scope again. */
write_name (entity, /*ignore_local_scope=*/1);
write_discriminator (discriminator_for_local_entity (local_entity));
}
}
/* Non-terminals <type> and <CV-qualifier>.
<type> ::= <builtin-type>
::= <function-type>
::= <class-enum-type>
::= <array-type>
::= <pointer-to-member-type>
::= <template-param>
::= <substitution>
::= <CV-qualifier>
::= P <type> # pointer-to
::= R <type> # reference-to
::= C <type> # complex pair (C 2000)
::= G <type> # imaginary (C 2000) [not supported]
::= U <source-name> <type> # vendor extended type qualifier
C++0x extensions
<type> ::= RR <type> # rvalue reference-to
<type> ::= Dt <expression> # decltype of an id-expression or
# class member access
<type> ::= DT <expression> # decltype of an expression
<type> ::= Dn # decltype of nullptr
TYPE is a type node. */
static void
write_type (tree type)
{
/* This gets set to nonzero if TYPE turns out to be a (possibly
CV-qualified) builtin type. */
int is_builtin_type = 0;
MANGLE_TRACE_TREE ("type", type);
if (type == error_mark_node)
return;
type = canonicalize_for_substitution (type);
if (find_substitution (type))
return;
if (write_CV_qualifiers_for_type (type) > 0)
/* If TYPE was CV-qualified, we just wrote the qualifiers; now
mangle the unqualified type. The recursive call is needed here
since both the qualified and unqualified types are substitution
candidates. */
{
tree t = TYPE_MAIN_VARIANT (type);
if (TYPE_ATTRIBUTES (t) && !OVERLOAD_TYPE_P (t))
{
tree attrs = NULL_TREE;
if (tx_safe_fn_type_p (type))
attrs = tree_cons (get_identifier ("transaction_safe"),
NULL_TREE, attrs);
t = cp_build_type_attribute_variant (t, attrs);
}
gcc_assert (t != type);
if (TREE_CODE (t) == FUNCTION_TYPE
|| TREE_CODE (t) == METHOD_TYPE)
{
t = build_ref_qualified_type (t, type_memfn_rqual (type));
if (flag_noexcept_type)
{
tree r = TYPE_RAISES_EXCEPTIONS (type);
t = build_exception_variant (t, r);
}
if (abi_version_at_least (8)
|| type == TYPE_MAIN_VARIANT (type))
/* Avoid adding the unqualified function type as a substitution. */
write_function_type (t);
else
write_type (t);
if (abi_warn_or_compat_version_crosses (8))
G.need_abi_warning = 1;
}
else
write_type (t);
}
else if (TREE_CODE (type) == ARRAY_TYPE)
/* It is important not to use the TYPE_MAIN_VARIANT of TYPE here
so that the cv-qualification of the element type is available
in write_array_type. */
write_array_type (type);
else
{
tree type_orig = type;
/* See through any typedefs. */
type = TYPE_MAIN_VARIANT (type);
if (TREE_CODE (type) == FUNCTION_TYPE
|| TREE_CODE (type) == METHOD_TYPE)
type = cxx_copy_lang_qualifiers (type, type_orig);
/* According to the C++ ABI, some library classes are passed the
same as the scalar type of their single member and use the same
mangling. */
if (TREE_CODE (type) == RECORD_TYPE && TYPE_TRANSPARENT_AGGR (type))
type = TREE_TYPE (first_field (type));
if (TYPE_PTRDATAMEM_P (type))
write_pointer_to_member_type (type);
else
{
/* Handle any target-specific fundamental types. */
const char *target_mangling
= targetm.mangle_type (type_orig);
if (target_mangling)
{
write_string (target_mangling);
/* Add substitutions for types other than fundamental
types. */
if (!VOID_TYPE_P (type)
&& TREE_CODE (type) != INTEGER_TYPE
&& TREE_CODE (type) != REAL_TYPE
&& TREE_CODE (type) != BOOLEAN_TYPE)
add_substitution (type);
return;
}
switch (TREE_CODE (type))
{
case VOID_TYPE:
case BOOLEAN_TYPE:
case INTEGER_TYPE: /* Includes wchar_t. */
case REAL_TYPE:
case FIXED_POINT_TYPE:
{
/* If this is a typedef, TYPE may not be one of
the standard builtin type nodes, but an alias of one. Use
TYPE_MAIN_VARIANT to get to the underlying builtin type. */
write_builtin_type (TYPE_MAIN_VARIANT (type));
++is_builtin_type;
}
break;
case COMPLEX_TYPE:
write_char ('C');
write_type (TREE_TYPE (type));
break;
case FUNCTION_TYPE:
case METHOD_TYPE:
write_function_type (type);
break;
case UNION_TYPE:
case RECORD_TYPE:
case ENUMERAL_TYPE:
/* A pointer-to-member function is represented as a special
RECORD_TYPE, so check for this first. */
if (TYPE_PTRMEMFUNC_P (type))
write_pointer_to_member_type (type);
else
write_class_enum_type (type);
break;
case TYPENAME_TYPE:
case UNBOUND_CLASS_TEMPLATE:
/* We handle TYPENAME_TYPEs and UNBOUND_CLASS_TEMPLATEs like
ordinary nested names. */
write_nested_name (TYPE_STUB_DECL (type));
break;
case POINTER_TYPE:
case REFERENCE_TYPE:
if (TYPE_PTR_P (type))
write_char ('P');
else if (TYPE_REF_IS_RVALUE (type))
write_char ('O');
else
write_char ('R');
{
tree target = TREE_TYPE (type);
/* Attribute const/noreturn are not reflected in mangling.
We strip them here rather than at a lower level because
a typedef or template argument can have function type
with function-cv-quals (that use the same representation),
but you can't have a pointer/reference to such a type. */
if (TREE_CODE (target) == FUNCTION_TYPE)
{
if (abi_warn_or_compat_version_crosses (5)
&& TYPE_QUALS (target) != TYPE_UNQUALIFIED)
G.need_abi_warning = 1;
if (abi_version_at_least (5))
target = build_qualified_type (target, TYPE_UNQUALIFIED);
}
write_type (target);
}
break;
case TEMPLATE_TYPE_PARM:
if (is_auto (type))
{
if (AUTO_IS_DECLTYPE (type))
write_identifier ("Dc");
else
write_identifier ("Da");
++is_builtin_type;
break;
}
/* fall through. */
case TEMPLATE_PARM_INDEX:
write_template_param (type);
break;
case TEMPLATE_TEMPLATE_PARM:
write_template_template_param (type);
break;
case BOUND_TEMPLATE_TEMPLATE_PARM:
write_template_template_param (type);
write_template_args
(TI_ARGS (TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO (type)));
break;
case VECTOR_TYPE:
if (abi_version_at_least (4))
{
write_string ("Dv");
/* Non-constant vector size would be encoded with
_ expression, but we don't support that yet. */
write_unsigned_number (TYPE_VECTOR_SUBPARTS (type)
.to_constant ());
write_char ('_');
}
else
write_string ("U8__vector");
if (abi_warn_or_compat_version_crosses (4))
G.need_abi_warning = 1;
write_type (TREE_TYPE (type));
break;
case TYPE_PACK_EXPANSION:
write_string ("Dp");
write_type (PACK_EXPANSION_PATTERN (type));
break;
case DECLTYPE_TYPE:
/* These shouldn't make it into mangling. */
gcc_assert (!DECLTYPE_FOR_LAMBDA_CAPTURE (type)
&& !DECLTYPE_FOR_LAMBDA_PROXY (type));
/* In ABI <5, we stripped decltype of a plain decl. */
if (DECLTYPE_TYPE_ID_EXPR_OR_MEMBER_ACCESS_P (type))
{
tree expr = DECLTYPE_TYPE_EXPR (type);
tree etype = NULL_TREE;
switch (TREE_CODE (expr))
{
case VAR_DECL:
case PARM_DECL:
case RESULT_DECL:
case FUNCTION_DECL:
case CONST_DECL:
case TEMPLATE_PARM_INDEX:
etype = TREE_TYPE (expr);
break;
default:
break;
}
if (etype && !type_uses_auto (etype))
{
if (abi_warn_or_compat_version_crosses (5))
G.need_abi_warning = 1;
if (!abi_version_at_least (5))
{
write_type (etype);
return;
}
}
}
write_char ('D');
if (DECLTYPE_TYPE_ID_EXPR_OR_MEMBER_ACCESS_P (type))
write_char ('t');
else
write_char ('T');
++cp_unevaluated_operand;
write_expression (DECLTYPE_TYPE_EXPR (type));
--cp_unevaluated_operand;
write_char ('E');
break;
case NULLPTR_TYPE:
write_string ("Dn");
if (abi_version_at_least (7))
++is_builtin_type;
if (abi_warn_or_compat_version_crosses (7))
G.need_abi_warning = 1;
break;
case TYPEOF_TYPE:
sorry ("mangling typeof, use decltype instead");
break;
case UNDERLYING_TYPE:
sorry ("mangling __underlying_type");
break;
case LANG_TYPE:
/* fall through. */
default:
gcc_unreachable ();
}
}
}
/* Types other than builtin types are substitution candidates. */
if (!is_builtin_type)
add_substitution (type);
}
/* qsort callback for sorting a vector of attribute entries. */
static int
attr_strcmp (const void *p1, const void *p2)
{
tree a1 = *(const tree*)p1;
tree a2 = *(const tree*)p2;
const attribute_spec *as1 = lookup_attribute_spec (get_attribute_name (a1));
const attribute_spec *as2 = lookup_attribute_spec (get_attribute_name (a2));
return strcmp (as1->name, as2->name);
}
/* Non-terminal <CV-qualifiers> for type nodes. Returns the number of
CV-qualifiers written for TYPE.
<CV-qualifiers> ::= [r] [V] [K] */
static int
write_CV_qualifiers_for_type (const tree type)
{
int num_qualifiers = 0;
/* The order is specified by:
"In cases where multiple order-insensitive qualifiers are
present, they should be ordered 'K' (closest to the base type),
'V', 'r', and 'U' (farthest from the base type) ..." */
/* Mangle attributes that affect type identity as extended qualifiers.
We don't do this with classes and enums because their attributes
are part of their definitions, not something added on. */
if (!OVERLOAD_TYPE_P (type))
{
auto_vec<tree> vec;
for (tree a = TYPE_ATTRIBUTES (type); a; a = TREE_CHAIN (a))
{
tree name = get_attribute_name (a);
const attribute_spec *as = lookup_attribute_spec (name);
if (as && as->affects_type_identity
&& !is_attribute_p ("transaction_safe", name)
&& !is_attribute_p ("abi_tag", name))
vec.safe_push (a);
}
if (abi_warn_or_compat_version_crosses (10) && !vec.is_empty ())
G.need_abi_warning = true;
if (abi_version_at_least (10))
{
vec.qsort (attr_strcmp);
while (!vec.is_empty())
{
tree a = vec.pop();
const attribute_spec *as
= lookup_attribute_spec (get_attribute_name (a));
write_char ('U');
write_unsigned_number (strlen (as->name));
write_string (as->name);
if (TREE_VALUE (a))
{
write_char ('I');
for (tree args = TREE_VALUE (a); args;
args = TREE_CHAIN (args))
{
tree arg = TREE_VALUE (args);
write_template_arg (arg);
}
write_char ('E');
}
++num_qualifiers;
}
}
}
/* Note that we do not use cp_type_quals below; given "const
int[3]", the "const" is emitted with the "int", not with the
array. */
cp_cv_quals quals = TYPE_QUALS (type);
if (quals & TYPE_QUAL_RESTRICT)
{
write_char ('r');
++num_qualifiers;
}
if (quals & TYPE_QUAL_VOLATILE)
{
write_char ('V');
++num_qualifiers;
}
if (quals & TYPE_QUAL_CONST)
{
write_char ('K');
++num_qualifiers;
}
return num_qualifiers;
}
/* Non-terminal <builtin-type>.
<builtin-type> ::= v # void
::= b # bool
::= w # wchar_t
::= c # char
::= a # signed char
::= h # unsigned char
::= s # short
::= t # unsigned short
::= i # int
::= j # unsigned int
::= l # long
::= m # unsigned long
::= x # long long, __int64
::= y # unsigned long long, __int64
::= n # __int128
::= o # unsigned __int128
::= f # float
::= d # double
::= e # long double, __float80
::= g # __float128 [not supported]
::= u <source-name> # vendor extended type */
static void
write_builtin_type (tree type)
{
if (TYPE_CANONICAL (type))
type = TYPE_CANONICAL (type);
switch (TREE_CODE (type))
{
case VOID_TYPE:
write_char ('v');
break;
case BOOLEAN_TYPE:
write_char ('b');
break;
case INTEGER_TYPE:
/* TYPE may still be wchar_t, char16_t, or char32_t, since that
isn't in integer_type_nodes. */
if (type == wchar_type_node)
write_char ('w');
else if (type == char16_type_node)
write_string ("Ds");
else if (type == char32_type_node)
write_string ("Di");
else
{
size_t itk;
/* Assume TYPE is one of the shared integer type nodes. Find
it in the array of these nodes. */
iagain:
for (itk = 0; itk < itk_none; ++itk)
if (integer_types[itk] != NULL_TREE
&& integer_type_codes[itk] != '\0'
&& type == integer_types[itk])
{
/* Print the corresponding single-letter code. */
write_char (integer_type_codes[itk]);
break;
}
if (itk == itk_none)
{
tree t = c_common_type_for_mode (TYPE_MODE (type),
TYPE_UNSIGNED (type));
if (type != t)
{
type = t;
goto iagain;
}
if (TYPE_PRECISION (type) == 128)
write_char (TYPE_UNSIGNED (type) ? 'o' : 'n');
else
{
/* Allow for cases where TYPE is not one of the shared
integer type nodes and write a "vendor extended builtin
type" with a name the form intN or uintN, respectively.
Situations like this can happen if you have an
__attribute__((__mode__(__SI__))) type and use exotic
switches like '-mint8' on AVR. Of course, this is
undefined by the C++ ABI (and '-mint8' is not even
Standard C conforming), but when using such special
options you're pretty much in nowhere land anyway. */
const char *prefix;
char prec[11]; /* up to ten digits for an unsigned */
prefix = TYPE_UNSIGNED (type) ? "uint" : "int";
sprintf (prec, "%u", (unsigned) TYPE_PRECISION (type));
write_char ('u'); /* "vendor extended builtin type" */
write_unsigned_number (strlen (prefix) + strlen (prec));
write_string (prefix);
write_string (prec);
}
}
}
break;
case REAL_TYPE:
if (type == float_type_node)
write_char ('f');
else if (type == double_type_node)
write_char ('d');
else if (type == long_double_type_node)
write_char ('e');
else if (type == dfloat32_type_node)
write_string ("Df");
else if (type == dfloat64_type_node)
write_string ("Dd");
else if (type == dfloat128_type_node)
write_string ("De");
else
gcc_unreachable ();
break;
case FIXED_POINT_TYPE:
write_string ("DF");
if (GET_MODE_IBIT (TYPE_MODE (type)) > 0)
write_unsigned_number (GET_MODE_IBIT (TYPE_MODE (type)));
if (type == fract_type_node
|| type == sat_fract_type_node
|| type == accum_type_node
|| type == sat_accum_type_node)
write_char ('i');
else if (type == unsigned_fract_type_node
|| type == sat_unsigned_fract_type_node
|| type == unsigned_accum_type_node
|| type == sat_unsigned_accum_type_node)
write_char ('j');
else if (type == short_fract_type_node
|| type == sat_short_fract_type_node
|| type == short_accum_type_node
|| type == sat_short_accum_type_node)
write_char ('s');
else if (type == unsigned_short_fract_type_node
|| type == sat_unsigned_short_fract_type_node
|| type == unsigned_short_accum_type_node
|| type == sat_unsigned_short_accum_type_node)
write_char ('t');
else if (type == long_fract_type_node
|| type == sat_long_fract_type_node
|| type == long_accum_type_node
|| type == sat_long_accum_type_node)
write_char ('l');
else if (type == unsigned_long_fract_type_node
|| type == sat_unsigned_long_fract_type_node
|| type == unsigned_long_accum_type_node
|| type == sat_unsigned_long_accum_type_node)
write_char ('m');
else if (type == long_long_fract_type_node
|| type == sat_long_long_fract_type_node
|| type == long_long_accum_type_node
|| type == sat_long_long_accum_type_node)
write_char ('x');
else if (type == unsigned_long_long_fract_type_node
|| type == sat_unsigned_long_long_fract_type_node
|| type == unsigned_long_long_accum_type_node
|| type == sat_unsigned_long_long_accum_type_node)
write_char ('y');
else
sorry ("mangling unknown fixed point type");
write_unsigned_number (GET_MODE_FBIT (TYPE_MODE (type)));
if (TYPE_SATURATING (type))
write_char ('s');
else
write_char ('n');
break;
default:
gcc_unreachable ();
}
}
/* Non-terminal <function-type>. NODE is a FUNCTION_TYPE or
METHOD_TYPE. The return type is mangled before the parameter
types.
<function-type> ::= F [Y] <bare-function-type> [<ref-qualifier>] E */
static void
write_function_type (const tree type)
{
MANGLE_TRACE_TREE ("function-type", type);
/* For a pointer to member function, the function type may have
cv-qualifiers, indicating the quals for the artificial 'this'
parameter. */
if (TREE_CODE (type) == METHOD_TYPE)
{
/* The first parameter must be a POINTER_TYPE pointing to the
`this' parameter. */
tree this_type = class_of_this_parm (type);
write_CV_qualifiers_for_type (this_type);
}
write_exception_spec (TYPE_RAISES_EXCEPTIONS (type));
if (tx_safe_fn_type_p (type))
write_string ("Dx");
write_char ('F');
/* We don't track whether or not a type is `extern "C"'. Note that
you can have an `extern "C"' function that does not have
`extern "C"' type, and vice versa:
extern "C" typedef void function_t();
function_t f; // f has C++ linkage, but its type is
// `extern "C"'
typedef void function_t();
extern "C" function_t f; // Vice versa.
See [dcl.link]. */
write_bare_function_type (type, /*include_return_type_p=*/1,
/*decl=*/NULL);
if (FUNCTION_REF_QUALIFIED (type))
{
if (FUNCTION_RVALUE_QUALIFIED (type))
write_char ('O');
else
write_char ('R');
}
write_char ('E');
}
/* Non-terminal <bare-function-type>. TYPE is a FUNCTION_TYPE or
METHOD_TYPE. If INCLUDE_RETURN_TYPE is nonzero, the return value
is mangled before the parameter types. If non-NULL, DECL is
FUNCTION_DECL for the function whose type is being emitted. */
static void
write_bare_function_type (const tree type, const int include_return_type_p,
const tree decl)
{
MANGLE_TRACE_TREE ("bare-function-type", type);
/* Mangle the return type, if requested. */
if (include_return_type_p)
write_type (TREE_TYPE (type));
/* Now mangle the types of the arguments. */
++G.parm_depth;
write_method_parms (TYPE_ARG_TYPES (type),
TREE_CODE (type) == METHOD_TYPE,
decl);
--G.parm_depth;
}
/* Write the mangled representation of a method parameter list of
types given in PARM_TYPES. If METHOD_P is nonzero, the function is
considered a non-static method, and the this parameter is omitted.
If non-NULL, DECL is the FUNCTION_DECL for the function whose
parameters are being emitted. */
static void
write_method_parms (tree parm_types, const int method_p, const tree decl)
{
tree first_parm_type;
tree parm_decl = decl ? DECL_ARGUMENTS (decl) : NULL_TREE;
/* Assume this parameter type list is variable-length. If it ends
with a void type, then it's not. */
int varargs_p = 1;
/* If this is a member function, skip the first arg, which is the
this pointer.
"Member functions do not encode the type of their implicit this
parameter."
Similarly, there's no need to mangle artificial parameters, like
the VTT parameters for constructors and destructors. */
if (method_p)
{
parm_types = TREE_CHAIN (parm_types);
parm_decl = parm_decl ? DECL_CHAIN (parm_decl) : NULL_TREE;
while (parm_decl && DECL_ARTIFICIAL (parm_decl))
{
parm_types = TREE_CHAIN (parm_types);
parm_decl = DECL_CHAIN (parm_decl);
}
if (decl && ctor_omit_inherited_parms (decl))
/* Bring back parameters omitted from an inherited ctor. */
parm_types = FUNCTION_FIRST_USER_PARMTYPE (DECL_ORIGIN (decl));
}
for (first_parm_type = parm_types;
parm_types;
parm_types = TREE_CHAIN (parm_types))
{
tree parm = TREE_VALUE (parm_types);
if (parm == void_type_node)
{
/* "Empty parameter lists, whether declared as () or
conventionally as (void), are encoded with a void parameter
(v)." */
if (parm_types == first_parm_type)
write_type (parm);
/* If the parm list is terminated with a void type, it's
fixed-length. */
varargs_p = 0;
/* A void type better be the last one. */
gcc_assert (TREE_CHAIN (parm_types) == NULL);
}
else
write_type (parm);
}
if (varargs_p)
/* <builtin-type> ::= z # ellipsis */
write_char ('z');
}
/* <class-enum-type> ::= <name> */
static void
write_class_enum_type (const tree type)
{
write_name (TYPE_NAME (type), /*ignore_local_scope=*/0);
}
/* Non-terminal <template-args>. ARGS is a TREE_VEC of template
arguments.
<template-args> ::= I <template-arg>* E */
static void
write_template_args (tree args)
{
int i;
int length = 0;
MANGLE_TRACE_TREE ("template-args", args);
write_char ('I');
if (args)
length = TREE_VEC_LENGTH (args);
if (args && length && TREE_CODE (TREE_VEC_ELT (args, 0)) == TREE_VEC)
{
/* We have nested template args. We want the innermost template
argument list. */
args = TREE_VEC_ELT (args, length - 1);
length = TREE_VEC_LENGTH (args);
}
for (i = 0; i < length; ++i)
write_template_arg (TREE_VEC_ELT (args, i));
write_char ('E');
}
/* Write out the
<unqualified-name>
<unqualified-name> <template-args>
part of SCOPE_REF or COMPONENT_REF mangling. */
static void
write_member_name (tree member)
{
if (identifier_p (member))
{
if (abi_version_at_least (11) && IDENTIFIER_ANY_OP_P (member))
{
write_string ("on");
if (abi_warn_or_compat_version_crosses (11))
G.need_abi_warning = 1;
}
write_unqualified_id (member);
}
else if (DECL_P (member))
write_unqualified_name (member);
else if (TREE_CODE (member) == TEMPLATE_ID_EXPR)
{
tree name = TREE_OPERAND (member, 0);
name = OVL_FIRST (name);
write_member_name (name);
write_template_args (TREE_OPERAND (member, 1));
}
else
write_expression (member);
}
/* <expression> ::= <unary operator-name> <expression>
::= <binary operator-name> <expression> <expression>
::= <expr-primary>
<expr-primary> ::= <template-param>
::= L <type> <value number> E # literal
::= L <mangled-name> E # external name
::= st <type> # sizeof
::= sr <type> <unqualified-name> # dependent name
::= sr <type> <unqualified-name> <template-args> */
static void
write_expression (tree expr)
{
enum tree_code code = TREE_CODE (expr);
/* Skip NOP_EXPR and CONVERT_EXPR. They can occur when (say) a pointer
argument is converted (via qualification conversions) to another type. */
while (CONVERT_EXPR_CODE_P (code)
|| location_wrapper_p (expr)
/* Parentheses aren't mangled. */
|| code == PAREN_EXPR
|| code == NON_LVALUE_EXPR)
{
expr = TREE_OPERAND (expr, 0);
code = TREE_CODE (expr);
}
if (code == BASELINK
&& (!type_unknown_p (expr)
|| !BASELINK_QUALIFIED_P (expr)))
{
expr = BASELINK_FUNCTIONS (expr);
code = TREE_CODE (expr);
}
/* Handle pointers-to-members by making them look like expression
nodes. */
if (code == PTRMEM_CST)
{
expr = build_nt (ADDR_EXPR,
build_qualified_name (/*type=*/NULL_TREE,
PTRMEM_CST_CLASS (expr),
PTRMEM_CST_MEMBER (expr),
/*template_p=*/false));
code = TREE_CODE (expr);
}
/* Handle template parameters. */
if (code == TEMPLATE_TYPE_PARM
|| code == TEMPLATE_TEMPLATE_PARM
|| code == BOUND_TEMPLATE_TEMPLATE_PARM
|| code == TEMPLATE_PARM_INDEX)
write_template_param (expr);
/* Handle literals. */
else if (TREE_CODE_CLASS (code) == tcc_constant
|| code == CONST_DECL)
write_template_arg_literal (expr);
else if (code == PARM_DECL && DECL_ARTIFICIAL (expr))
{
gcc_assert (id_equal (DECL_NAME (expr), "this"));
write_string ("fpT");
}
else if (code == PARM_DECL)
{
/* A function parameter used in a late-specified return type. */
int index = DECL_PARM_INDEX (expr);
int level = DECL_PARM_LEVEL (expr);
int delta = G.parm_depth - level + 1;
gcc_assert (index >= 1);
write_char ('f');
if (delta != 0)
{
if (abi_version_at_least (5))
{
/* Let L be the number of function prototype scopes from the
innermost one (in which the parameter reference occurs) up
to (and including) the one containing the declaration of
the referenced parameter. If the parameter declaration
clause of the innermost function prototype scope has been
completely seen, it is not counted (in that case -- which
is perhaps the most common -- L can be zero). */
write_char ('L');
write_unsigned_number (delta - 1);
}
if (abi_warn_or_compat_version_crosses (5))
G.need_abi_warning = true;
}
write_char ('p');
write_compact_number (index - 1);
}
else if (DECL_P (expr))
{
write_char ('L');
write_mangled_name (expr, false);
write_char ('E');
}
else if (TREE_CODE (expr) == SIZEOF_EXPR)
{
tree op = TREE_OPERAND (expr, 0);
if (PACK_EXPANSION_P (op))
{
if (abi_warn_or_compat_version_crosses (11))
G.need_abi_warning = true;
if (abi_version_at_least (11))
{
/* sZ rather than szDp. */
write_string ("sZ");
write_expression (PACK_EXPANSION_PATTERN (op));
return;
}
}
if (SIZEOF_EXPR_TYPE_P (expr))
{
write_string ("st");
write_type (TREE_TYPE (op));
}
else if (ARGUMENT_PACK_P (op))
{
tree args = ARGUMENT_PACK_ARGS (op);
int length = TREE_VEC_LENGTH (args);
if (abi_warn_or_compat_version_crosses (10))
G.need_abi_warning = true;
if (abi_version_at_least (10))
{
/* sP <template-arg>* E # sizeof...(T), size of a captured
template parameter pack from an alias template */
write_string ("sP");
for (int i = 0; i < length; ++i)
write_template_arg (TREE_VEC_ELT (args, i));
write_char ('E');
}
else
{
/* In GCC 5 we represented this sizeof wrong, with the effect
that we mangled it as the last element of the pack. */
tree arg = TREE_VEC_ELT (args, length-1);
if (TYPE_P (op))
{
write_string ("st");
write_type (arg);
}
else
{
write_string ("sz");
write_expression (arg);
}
}
}
else if (TYPE_P (TREE_OPERAND (expr, 0)))
{
write_string ("st");
write_type (TREE_OPERAND (expr, 0));
}
else
goto normal_expr;
}
else if (TREE_CODE (expr) == ALIGNOF_EXPR
&& TYPE_P (TREE_OPERAND (expr, 0)))
{
write_string ("at");
write_type (TREE_OPERAND (expr, 0));
}
else if (code == SCOPE_REF
|| code == BASELINK)
{
tree scope, member;
if (code == SCOPE_REF)
{
scope = TREE_OPERAND (expr, 0);
member = TREE_OPERAND (expr, 1);
gcc_assert (!BASELINK_P (member));
}
else
{
scope = BINFO_TYPE (BASELINK_ACCESS_BINFO (expr));
member = BASELINK_FUNCTIONS (expr);
}
/* If the MEMBER is a real declaration, then the qualifying
scope was not dependent. Ideally, we would not have a
SCOPE_REF in those cases, but sometimes we do. If the second
argument is a DECL, then the name must not have been
dependent. */
if (DECL_P (member))
write_expression (member);
else
{
write_string ("sr");
write_type (scope);
write_member_name (member);
}
}
else if (INDIRECT_REF_P (expr)
&& TREE_TYPE (TREE_OPERAND (expr, 0))
&& TYPE_REF_P (TREE_TYPE (TREE_OPERAND (expr, 0))))
{
write_expression (TREE_OPERAND (expr, 0));
}
else if (identifier_p (expr))
{
/* An operator name appearing as a dependent name needs to be
specially marked to disambiguate between a use of the operator
name and a use of the operator in an expression. */
if (IDENTIFIER_ANY_OP_P (expr))
write_string ("on");
write_unqualified_id (expr);
}
else if (TREE_CODE (expr) == TEMPLATE_ID_EXPR)
{
tree fn = TREE_OPERAND (expr, 0);
fn = OVL_NAME (fn);
if (IDENTIFIER_ANY_OP_P (fn))
write_string ("on");
write_unqualified_id (fn);
write_template_args (TREE_OPERAND (expr, 1));
}
else if (TREE_CODE (expr) == MODOP_EXPR)
{
enum tree_code subop = TREE_CODE (TREE_OPERAND (expr, 1));
const char *name = OVL_OP_INFO (true, subop)->mangled_name;
write_string (name);
write_expression (TREE_OPERAND (expr, 0));
write_expression (TREE_OPERAND (expr, 2));
}
else if (code == NEW_EXPR || code == VEC_NEW_EXPR)
{
/* ::= [gs] nw <expression>* _ <type> E
::= [gs] nw <expression>* _ <type> <initializer>
::= [gs] na <expression>* _ <type> E
::= [gs] na <expression>* _ <type> <initializer>
<initializer> ::= pi <expression>* E */
tree placement = TREE_OPERAND (expr, 0);
tree type = TREE_OPERAND (expr, 1);
tree nelts = TREE_OPERAND (expr, 2);
tree init = TREE_OPERAND (expr, 3);
tree t;
gcc_assert (code == NEW_EXPR);
if (TREE_OPERAND (expr, 2))
code = VEC_NEW_EXPR;
if (NEW_EXPR_USE_GLOBAL (expr))
write_string ("gs");
write_string (OVL_OP_INFO (false, code)->mangled_name);
for (t = placement; t; t = TREE_CHAIN (t))
write_expression (TREE_VALUE (t));
write_char ('_');
if (nelts)
{
tree domain;
++processing_template_decl;
domain = compute_array_index_type (NULL_TREE, nelts,
tf_warning_or_error);
type = build_cplus_array_type (type, domain);
--processing_template_decl;
}
write_type (type);
if (init && TREE_CODE (init) == TREE_LIST
&& DIRECT_LIST_INIT_P (TREE_VALUE (init)))
write_expression (TREE_VALUE (init));
else
{
if (init)
write_string ("pi");
if (init && init != void_node)
for (t = init; t; t = TREE_CHAIN (t))
write_expression (TREE_VALUE (t));
write_char ('E');
}
}
else if (code == DELETE_EXPR || code == VEC_DELETE_EXPR)
{
gcc_assert (code == DELETE_EXPR);
if (DELETE_EXPR_USE_VEC (expr))
code = VEC_DELETE_EXPR;
if (DELETE_EXPR_USE_GLOBAL (expr))
write_string ("gs");
write_string (OVL_OP_INFO (false, code)->mangled_name);
write_expression (TREE_OPERAND (expr, 0));
}
else if (code == THROW_EXPR)
{
tree op = TREE_OPERAND (expr, 0);
if (op)
{
write_string ("tw");
write_expression (op);
}
else
write_string ("tr");
}
else if (code == CONSTRUCTOR)
{
vec<constructor_elt, va_gc> *elts = CONSTRUCTOR_ELTS (expr);
unsigned i; tree val;
if (BRACE_ENCLOSED_INITIALIZER_P (expr))
write_string ("il");
else
{
write_string ("tl");
write_type (TREE_TYPE (expr));
}
FOR_EACH_CONSTRUCTOR_VALUE (elts, i, val)
write_expression (val);
write_char ('E');
}
else if (dependent_name (expr))
{
write_unqualified_id (dependent_name (expr));
}
else
{
normal_expr:
int i, len;
const char *name;
/* When we bind a variable or function to a non-type template
argument with reference type, we create an ADDR_EXPR to show
the fact that the entity's address has been taken. But, we
don't actually want to output a mangling code for the `&'. */
if (TREE_CODE (expr) == ADDR_EXPR
&& TREE_TYPE (expr)
&& TYPE_REF_P (TREE_TYPE (expr)))
{
expr = TREE_OPERAND (expr, 0);
if (DECL_P (expr))
{
write_expression (expr);
return;
}
code = TREE_CODE (expr);
}
if (code == COMPONENT_REF)
{
tree ob = TREE_OPERAND (expr, 0);
if (TREE_CODE (ob) == ARROW_EXPR)
{
write_string (OVL_OP_INFO (false, code)->mangled_name);
ob = TREE_OPERAND (ob, 0);
write_expression (ob);
}
else if (!is_dummy_object (ob))
{
write_string ("dt");
write_expression (ob);
}
/* else, for a non-static data member with no associated object (in
unevaluated context), use the unresolved-name mangling. */
write_member_name (TREE_OPERAND (expr, 1));
return;
}
/* If it wasn't any of those, recursively expand the expression. */
name = OVL_OP_INFO (false, code)->mangled_name;
/* We used to mangle const_cast and static_cast like a C cast. */
if (code == CONST_CAST_EXPR
|| code == STATIC_CAST_EXPR)
{
if (abi_warn_or_compat_version_crosses (6))
G.need_abi_warning = 1;
if (!abi_version_at_least (6))
name = OVL_OP_INFO (false, CAST_EXPR)->mangled_name;
}
if (name == NULL)
{
switch (code)
{
case TRAIT_EXPR:
error ("use of built-in trait %qE in function signature; "
"use library traits instead", expr);
break;
default:
sorry ("mangling %C", code);
break;
}
return;
}
else
write_string (name);
switch (code)
{
case CALL_EXPR:
{
tree fn = CALL_EXPR_FN (expr);
if (TREE_CODE (fn) == ADDR_EXPR)
fn = TREE_OPERAND (fn, 0);
/* Mangle a dependent name as the name, not whatever happens to
be the first function in the overload set. */
if ((TREE_CODE (fn) == FUNCTION_DECL
|| TREE_CODE (fn) == OVERLOAD)
&& type_dependent_expression_p_push (expr))
fn = OVL_NAME (fn);
write_expression (fn);
}
for (i = 0; i < call_expr_nargs (expr); ++i)
write_expression (CALL_EXPR_ARG (expr, i));
write_char ('E');
break;
case CAST_EXPR:
write_type (TREE_TYPE (expr));
if (list_length (TREE_OPERAND (expr, 0)) == 1)
write_expression (TREE_VALUE (TREE_OPERAND (expr, 0)));
else
{
tree args = TREE_OPERAND (expr, 0);
write_char ('_');
for (; args; args = TREE_CHAIN (args))
write_expression (TREE_VALUE (args));
write_char ('E');
}
break;
case DYNAMIC_CAST_EXPR:
case REINTERPRET_CAST_EXPR:
case STATIC_CAST_EXPR:
case CONST_CAST_EXPR:
write_type (TREE_TYPE (expr));
write_expression (TREE_OPERAND (expr, 0));
break;
case PREINCREMENT_EXPR:
case PREDECREMENT_EXPR:
if (abi_version_at_least (6))
write_char ('_');
if (abi_warn_or_compat_version_crosses (6))
G.need_abi_warning = 1;
/* Fall through. */
default:
/* In the middle-end, some expressions have more operands than
they do in templates (and mangling). */
len = cp_tree_operand_length (expr);
for (i = 0; i < len; ++i)
{
tree operand = TREE_OPERAND (expr, i);
/* As a GNU extension, the middle operand of a
conditional may be omitted. Since expression
manglings are supposed to represent the input token
stream, there's no good way to mangle such an
expression without extending the C++ ABI. */
if (code == COND_EXPR && i == 1 && !operand)
{
error ("omitted middle operand to %<?:%> operand "
"cannot be mangled");
continue;
}
else if (FOLD_EXPR_P (expr))
{
/* The first 'operand' of a fold-expression is the operator
that it folds over. */
if (i == 0)
{
int fcode = TREE_INT_CST_LOW (operand);
write_string (OVL_OP_INFO (false, fcode)->mangled_name);
continue;
}
else if (code == BINARY_LEFT_FOLD_EXPR)
{
/* The order of operands of the binary left and right
folds is the same, but we want to mangle them in
lexical order, i.e. non-pack first. */
if (i == 1)
operand = FOLD_EXPR_INIT (expr);
else
operand = FOLD_EXPR_PACK (expr);
}
if (PACK_EXPANSION_P (operand))
operand = PACK_EXPANSION_PATTERN (operand);
}
write_expression (operand);
}
}
}
}
/* Literal subcase of non-terminal <template-arg>.
"Literal arguments, e.g. "A<42L>", are encoded with their type
and value. Negative integer values are preceded with "n"; for
example, "A<-42L>" becomes "1AILln42EE". The bool value false is
encoded as 0, true as 1." */
static void
write_template_arg_literal (const tree value)
{
write_char ('L');
write_type (TREE_TYPE (value));
/* Write a null member pointer value as (type)0, regardless of its
real representation. */
if (null_member_pointer_value_p (value))
write_integer_cst (integer_zero_node);
else
switch (TREE_CODE (value))
{
case CONST_DECL:
write_integer_cst (DECL_INITIAL (value));
break;
case INTEGER_CST:
gcc_assert (!same_type_p (TREE_TYPE (value), boolean_type_node)
|| integer_zerop (value) || integer_onep (value));
write_integer_cst (value);
break;
case REAL_CST:
write_real_cst (value);
break;
case COMPLEX_CST:
if (TREE_CODE (TREE_REALPART (value)) == INTEGER_CST
&& TREE_CODE (TREE_IMAGPART (value)) == INTEGER_CST)
{
write_integer_cst (TREE_REALPART (value));
write_char ('_');
write_integer_cst (TREE_IMAGPART (value));
}
else if (TREE_CODE (TREE_REALPART (value)) == REAL_CST
&& TREE_CODE (TREE_IMAGPART (value)) == REAL_CST)
{
write_real_cst (TREE_REALPART (value));
write_char ('_');
write_real_cst (TREE_IMAGPART (value));
}
else
gcc_unreachable ();
break;
case STRING_CST:
sorry ("string literal in function template signature");
break;
default:
gcc_unreachable ();
}
write_char ('E');
}
/* Non-terminal <template-arg>.
<template-arg> ::= <type> # type
::= L <type> </value/ number> E # literal
::= LZ <name> E # external name
::= X <expression> E # expression */
static void
write_template_arg (tree node)
{
enum tree_code code = TREE_CODE (node);
MANGLE_TRACE_TREE ("template-arg", node);
/* A template template parameter's argument list contains TREE_LIST
nodes of which the value field is the actual argument. */
if (code == TREE_LIST)
{
node = TREE_VALUE (node);
/* If it's a decl, deal with its type instead. */
if (DECL_P (node))
{
node = TREE_TYPE (node);
code = TREE_CODE (node);
}
}
/* Strip a conversion added by convert_nontype_argument. */
if (TREE_CODE (node) == IMPLICIT_CONV_EXPR)
node = TREE_OPERAND (node, 0);
if (REFERENCE_REF_P (node))
node = TREE_OPERAND (node, 0);
if (TREE_CODE (node) == NOP_EXPR
&& TYPE_REF_P (TREE_TYPE (node)))
{
/* Template parameters can be of reference type. To maintain
internal consistency, such arguments use a conversion from
address of object to reference type. */
gcc_assert (TREE_CODE (TREE_OPERAND (node, 0)) == ADDR_EXPR);
node = TREE_OPERAND (TREE_OPERAND (node, 0), 0);
}
if (TREE_CODE (node) == BASELINK
&& !type_unknown_p (node))
{
if (abi_version_at_least (6))
node = BASELINK_FUNCTIONS (node);
if (abi_warn_or_compat_version_crosses (6))
/* We wrongly wrapped a class-scope function in X/E. */
G.need_abi_warning = 1;
}
if (ARGUMENT_PACK_P (node))
{
/* Expand the template argument pack. */
tree args = ARGUMENT_PACK_ARGS (node);
int i, length = TREE_VEC_LENGTH (args);
if (abi_version_at_least (6))
write_char ('J');
else
write_char ('I');
if (abi_warn_or_compat_version_crosses (6))
G.need_abi_warning = 1;
for (i = 0; i < length; ++i)
write_template_arg (TREE_VEC_ELT (args, i));
write_char ('E');
}
else if (TYPE_P (node))
write_type (node);
else if (code == TEMPLATE_DECL)
/* A template appearing as a template arg is a template template arg. */
write_template_template_arg (node);
else if ((TREE_CODE_CLASS (code) == tcc_constant && code != PTRMEM_CST)
|| code == CONST_DECL
|| null_member_pointer_value_p (node))
write_template_arg_literal (node);
else if (DECL_P (node))
{
write_char ('L');
/* Until ABI version 3, the underscore before the mangled name
was incorrectly omitted. */
if (!abi_version_at_least (3))
write_char ('Z');
else
write_string ("_Z");
if (abi_warn_or_compat_version_crosses (3))
G.need_abi_warning = 1;
write_encoding (node);
write_char ('E');
}
else
{
/* Template arguments may be expressions. */
write_char ('X');
write_expression (node);
write_char ('E');
}
}
/* <template-template-arg>
::= <name>
::= <substitution> */
static void
write_template_template_arg (const tree decl)
{
MANGLE_TRACE_TREE ("template-template-arg", decl);
if (find_substitution (decl))
return;
write_name (decl, /*ignore_local_scope=*/0);
add_substitution (decl);
}
/* Non-terminal <array-type>. TYPE is an ARRAY_TYPE.
<array-type> ::= A [</dimension/ number>] _ </element/ type>
::= A <expression> _ </element/ type>
"Array types encode the dimension (number of elements) and the
element type. For variable length arrays, the dimension (but not
the '_' separator) is omitted."
Note that for flexible array members, like for other arrays of
unspecified size, the dimension is also omitted. */
static void
write_array_type (const tree type)
{
write_char ('A');
if (TYPE_DOMAIN (type))
{
tree index_type;
index_type = TYPE_DOMAIN (type);
/* The INDEX_TYPE gives the upper and lower bounds of the array.
It's null for flexible array members which have no upper bound
(this is a change from GCC 5 and prior where such members were
incorrectly mangled as zero-length arrays). */
if (tree max = TYPE_MAX_VALUE (index_type))
{
if (TREE_CODE (max) == INTEGER_CST)
{
/* The ABI specifies that we should mangle the number of
elements in the array, not the largest allowed index. */
offset_int wmax = wi::to_offset (max) + 1;
/* Truncate the result - this will mangle [0, SIZE_INT_MAX]
number of elements as zero. */
wmax = wi::zext (wmax, TYPE_PRECISION (TREE_TYPE (max)));
gcc_assert (wi::fits_uhwi_p (wmax));
write_unsigned_number (wmax.to_uhwi ());
}
else
{
max = TREE_OPERAND (max, 0);
write_expression (max);
}
}
}
write_char ('_');
write_type (TREE_TYPE (type));
}
/* Non-terminal <pointer-to-member-type> for pointer-to-member
variables. TYPE is a pointer-to-member POINTER_TYPE.
<pointer-to-member-type> ::= M </class/ type> </member/ type> */
static void
write_pointer_to_member_type (const tree type)
{
write_char ('M');
write_type (TYPE_PTRMEM_CLASS_TYPE (type));
write_type (TYPE_PTRMEM_POINTED_TO_TYPE (type));
}
/* Non-terminal <template-param>. PARM is a TEMPLATE_TYPE_PARM,
TEMPLATE_TEMPLATE_PARM, BOUND_TEMPLATE_TEMPLATE_PARM or a
TEMPLATE_PARM_INDEX.
<template-param> ::= T </parameter/ number> _ */
static void
write_template_param (const tree parm)
{
int parm_index;
MANGLE_TRACE_TREE ("template-parm", parm);
switch (TREE_CODE (parm))
{
case TEMPLATE_TYPE_PARM:
case TEMPLATE_TEMPLATE_PARM:
case BOUND_TEMPLATE_TEMPLATE_PARM:
parm_index = TEMPLATE_TYPE_IDX (parm);
break;
case TEMPLATE_PARM_INDEX:
parm_index = TEMPLATE_PARM_IDX (parm);
break;
default:
gcc_unreachable ();
}
write_char ('T');
/* NUMBER as it appears in the mangling is (-1)-indexed, with the
earliest template param denoted by `_'. */
write_compact_number (parm_index);
}
/* <template-template-param>
::= <template-param>
::= <substitution> */
static void
write_template_template_param (const tree parm)
{
tree templ = NULL_TREE;
/* PARM, a TEMPLATE_TEMPLATE_PARM, is an instantiation of the
template template parameter. The substitution candidate here is
only the template. */
if (TREE_CODE (parm) == BOUND_TEMPLATE_TEMPLATE_PARM)
{
templ
= TI_TEMPLATE (TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO (parm));
if (find_substitution (templ))
return;
}
/* <template-param> encodes only the template parameter position,
not its template arguments, which is fine here. */
write_template_param (parm);
if (templ)
add_substitution (templ);
}
/* Non-terminal <substitution>.
<substitution> ::= S <seq-id> _
::= S_ */
static void
write_substitution (const int seq_id)
{
MANGLE_TRACE ("substitution", "");
write_char ('S');
if (seq_id > 0)
write_number (seq_id - 1, /*unsigned=*/1, 36);
write_char ('_');
}
/* Start mangling ENTITY. */
static inline void
start_mangling (const tree entity)
{
G.entity = entity;
G.need_abi_warning = false;
G.need_cxx17_warning = false;
obstack_free (&name_obstack, name_base);
mangle_obstack = &name_obstack;
name_base = obstack_alloc (&name_obstack, 0);
}
/* Done with mangling. If WARN is true, and the name of G.entity will
be mangled differently in a future version of the ABI, issue a
warning. */
static void
finish_mangling_internal (void)
{
/* Clear all the substitutions. */
vec_safe_truncate (G.substitutions, 0);
/* Null-terminate the string. */
write_char ('\0');
}
/* Like finish_mangling_internal, but return the mangled string. */
static inline const char *
finish_mangling (void)
{
finish_mangling_internal ();
return (const char *) obstack_finish (mangle_obstack);
}
/* Like finish_mangling_internal, but return an identifier. */
static tree
finish_mangling_get_identifier (void)
{
finish_mangling_internal ();
/* Don't obstack_finish here, and the next start_mangling will
remove the identifier. */
return get_identifier ((const char *) obstack_base (mangle_obstack));
}
/* Initialize data structures for mangling. */
void
init_mangle (void)
{
gcc_obstack_init (&name_obstack);
name_base = obstack_alloc (&name_obstack, 0);
vec_alloc (G.substitutions, 0);
/* Cache these identifiers for quick comparison when checking for
standard substitutions. */
subst_identifiers[SUBID_ALLOCATOR] = get_identifier ("allocator");
subst_identifiers[SUBID_BASIC_STRING] = get_identifier ("basic_string");
subst_identifiers[SUBID_CHAR_TRAITS] = get_identifier ("char_traits");
subst_identifiers[SUBID_BASIC_ISTREAM] = get_identifier ("basic_istream");
subst_identifiers[SUBID_BASIC_OSTREAM] = get_identifier ("basic_ostream");
subst_identifiers[SUBID_BASIC_IOSTREAM] = get_identifier ("basic_iostream");
}
/* Generate the mangled name of DECL. */
static tree
mangle_decl_string (const tree decl)
{
tree result;
location_t saved_loc = input_location;
tree saved_fn = NULL_TREE;
bool template_p = false;
/* We shouldn't be trying to mangle an uninstantiated template. */
gcc_assert (!type_dependent_expression_p (decl));
if (DECL_LANG_SPECIFIC (decl) && DECL_USE_TEMPLATE (decl))
{
struct tinst_level *tl = current_instantiation ();
if ((!tl || tl->maybe_get_node () != decl)
&& push_tinst_level (decl))
{
template_p = true;
saved_fn = current_function_decl;
current_function_decl = NULL_TREE;
}
}
input_location = DECL_SOURCE_LOCATION (decl);
start_mangling (decl);
if (TREE_CODE (decl) == TYPE_DECL)
write_type (TREE_TYPE (decl));
else
write_mangled_name (decl, true);
result = finish_mangling_get_identifier ();
if (DEBUG_MANGLE)
fprintf (stderr, "mangle_decl_string = '%s'\n\n",
IDENTIFIER_POINTER (result));
if (template_p)
{
pop_tinst_level ();
current_function_decl = saved_fn;
}
input_location = saved_loc;
return result;
}
/* Return an identifier for the external mangled name of DECL. */
static tree
get_mangled_id (tree decl)
{
tree id = mangle_decl_string (decl);
return targetm.mangle_decl_assembler_name (decl, id);
}
/* Create an identifier for the external mangled name of DECL. */
void
mangle_decl (const tree decl)
{
tree id;
bool dep;
/* Don't bother mangling uninstantiated templates. */
++processing_template_decl;
if (TREE_CODE (decl) == TYPE_DECL)
dep = dependent_type_p (TREE_TYPE (decl));
else
dep = (DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl)
&& any_dependent_template_arguments_p (DECL_TI_ARGS (decl)));
--processing_template_decl;
if (dep)
return;
/* During LTO we keep mangled names of TYPE_DECLs for ODR type merging.
It is not needed to assign names to anonymous namespace, but we use the
"<anon>" marker to be able to tell if type is C++ ODR type or type
produced by other language. */
if (TREE_CODE (decl) == TYPE_DECL
&& TYPE_STUB_DECL (TREE_TYPE (decl))
&& !TREE_PUBLIC (TYPE_STUB_DECL (TREE_TYPE (decl))))
id = get_identifier ("<anon>");
else
{
gcc_assert (TREE_CODE (decl) != TYPE_DECL
|| !no_linkage_check (TREE_TYPE (decl), true));
if (abi_version_at_least (10))
if (tree fn = decl_function_context (decl))
maybe_check_abi_tags (fn, decl);
id = get_mangled_id (decl);
}
SET_DECL_ASSEMBLER_NAME (decl, id);
if (G.need_cxx17_warning
&& (TREE_PUBLIC (decl) || DECL_REALLY_EXTERN (decl)))
warning_at (DECL_SOURCE_LOCATION (decl), OPT_Wnoexcept_type,
"mangled name for %qD will change in C++17 because the "
"exception specification is part of a function type",
decl);
if (id != DECL_NAME (decl)
/* Don't do this for a fake symbol we aren't going to emit anyway. */
&& TREE_CODE (decl) != TYPE_DECL
&& !DECL_MAYBE_IN_CHARGE_CDTOR_P (decl))
{
int save_ver = flag_abi_version;
tree id2 = NULL_TREE;
if (!DECL_REALLY_EXTERN (decl))
{
record_mangling (decl, G.need_abi_warning);
if (!G.need_abi_warning)
return;
flag_abi_version = flag_abi_compat_version;
id2 = mangle_decl_string (decl);
id2 = targetm.mangle_decl_assembler_name (decl, id2);
flag_abi_version = save_ver;
if (id2 != id)
note_mangling_alias (decl, id2);
}
if (warn_abi)
{
const char fabi_version[] = "-fabi-version";
if (flag_abi_compat_version != warn_abi_version
|| id2 == NULL_TREE)
{
flag_abi_version = warn_abi_version;
id2 = mangle_decl_string (decl);
id2 = targetm.mangle_decl_assembler_name (decl, id2);
}
flag_abi_version = save_ver;
if (id2 == id)
/* OK. */;
else if (warn_abi_version != 0
&& abi_version_at_least (warn_abi_version))
warning_at (DECL_SOURCE_LOCATION (G.entity), OPT_Wabi,
"the mangled name of %qD changed between "
"%<%s=%d%> (%qD) and %<%s=%d%> (%qD)",
G.entity, fabi_version, warn_abi_version, id2,
fabi_version, save_ver, id);
else
warning_at (DECL_SOURCE_LOCATION (G.entity), OPT_Wabi,
"the mangled name of %qD changes between "
"%<%s=%d%> (%qD) and %<%s=%d%> (%qD)",
G.entity, fabi_version, save_ver, id,
fabi_version, warn_abi_version, id2);
}
flag_abi_version = save_ver;
}
}
/* Generate the mangled representation of TYPE. */
const char *
mangle_type_string (const tree type)
{
const char *result;
start_mangling (type);
write_type (type);
result = finish_mangling ();
if (DEBUG_MANGLE)
fprintf (stderr, "mangle_type_string = '%s'\n\n", result);
return result;
}
/* Create an identifier for the mangled name of a special component
for belonging to TYPE. CODE is the ABI-specified code for this
component. */
static tree
mangle_special_for_type (const tree type, const char *code)
{
tree result;
/* We don't have an actual decl here for the special component, so
we can't just process the <encoded-name>. Instead, fake it. */
start_mangling (type);
/* Start the mangling. */
write_string ("_Z");
write_string (code);
/* Add the type. */
write_type (type);
result = finish_mangling_get_identifier ();
if (DEBUG_MANGLE)
fprintf (stderr, "mangle_special_for_type = %s\n\n",
IDENTIFIER_POINTER (result));
return result;
}
/* Create an identifier for the mangled representation of the typeinfo
structure for TYPE. */
tree
mangle_typeinfo_for_type (const tree type)
{
return mangle_special_for_type (type, "TI");
}
/* Create an identifier for the mangled name of the NTBS containing
the mangled name of TYPE. */
tree
mangle_typeinfo_string_for_type (const tree type)
{
return mangle_special_for_type (type, "TS");
}
/* Create an identifier for the mangled name of the vtable for TYPE. */
tree
mangle_vtbl_for_type (const tree type)
{
return mangle_special_for_type (type, "TV");
}
/* Returns an identifier for the mangled name of the VTT for TYPE. */
tree
mangle_vtt_for_type (const tree type)
{
return mangle_special_for_type (type, "TT");
}
/* Returns an identifier for the mangled name of the decomposition
artificial variable DECL. DECLS is the vector of the VAR_DECLs
for the identifier-list. */
tree
mangle_decomp (const tree decl, vec<tree> &decls)
{
gcc_assert (!type_dependent_expression_p (decl));
location_t saved_loc = input_location;
input_location = DECL_SOURCE_LOCATION (decl);
start_mangling (decl);
write_string ("_Z");
tree context = decl_mangling_context (decl);
gcc_assert (context != NULL_TREE);
bool nested = false;
if (DECL_NAMESPACE_STD_P (context))
write_string ("St");
else if (context != global_namespace)
{
nested = true;
write_char ('N');
write_prefix (decl_mangling_context (decl));
}
write_string ("DC");
unsigned int i;
tree d;
FOR_EACH_VEC_ELT (decls, i, d)
write_unqualified_name (d);
write_char ('E');
if (nested)
write_char ('E');
tree id = finish_mangling_get_identifier ();
if (DEBUG_MANGLE)
fprintf (stderr, "mangle_decomp = '%s'\n\n",
IDENTIFIER_POINTER (id));
input_location = saved_loc;
return id;
}
/* Return an identifier for a construction vtable group. TYPE is
the most derived class in the hierarchy; BINFO is the base
subobject for which this construction vtable group will be used.
This mangling isn't part of the ABI specification; in the ABI
specification, the vtable group is dumped in the same COMDAT as the
main vtable, and is referenced only from that vtable, so it doesn't
need an external name. For binary formats without COMDAT sections,
though, we need external names for the vtable groups.
We use the production
<special-name> ::= CT <type> <offset number> _ <base type> */
tree
mangle_ctor_vtbl_for_type (const tree type, const tree binfo)
{
tree result;
start_mangling (type);
write_string ("_Z");
write_string ("TC");
write_type (type);
write_integer_cst (BINFO_OFFSET (binfo));
write_char ('_');
write_type (BINFO_TYPE (binfo));
result = finish_mangling_get_identifier ();
if (DEBUG_MANGLE)
fprintf (stderr, "mangle_ctor_vtbl_for_type = %s\n\n",
IDENTIFIER_POINTER (result));
return result;
}
/* Mangle a this pointer or result pointer adjustment.
<call-offset> ::= h <fixed offset number> _
::= v <fixed offset number> _ <virtual offset number> _ */
static void
mangle_call_offset (const tree fixed_offset, const tree virtual_offset)
{
write_char (virtual_offset ? 'v' : 'h');
/* For either flavor, write the fixed offset. */
write_integer_cst (fixed_offset);
write_char ('_');
/* For a virtual thunk, add the virtual offset. */
if (virtual_offset)
{
write_integer_cst (virtual_offset);
write_char ('_');
}
}
/* Return an identifier for the mangled name of a this-adjusting or
covariant thunk to FN_DECL. FIXED_OFFSET is the initial adjustment
to this used to find the vptr. If VIRTUAL_OFFSET is non-NULL, this
is a virtual thunk, and it is the vtbl offset in
bytes. THIS_ADJUSTING is nonzero for a this adjusting thunk and
zero for a covariant thunk. Note, that FN_DECL might be a covariant
thunk itself. A covariant thunk name always includes the adjustment
for the this pointer, even if there is none.
<special-name> ::= T <call-offset> <base encoding>
::= Tc <this_adjust call-offset> <result_adjust call-offset>
<base encoding> */
tree
mangle_thunk (tree fn_decl, const int this_adjusting, tree fixed_offset,
tree virtual_offset, tree thunk)
{
tree result;
if (abi_version_at_least (11))
maybe_check_abi_tags (fn_decl, thunk, 11);
start_mangling (fn_decl);
write_string ("_Z");
write_char ('T');
if (!this_adjusting)
{
/* Covariant thunk with no this adjustment */
write_char ('c');
mangle_call_offset (integer_zero_node, NULL_TREE);
mangle_call_offset (fixed_offset, virtual_offset);
}
else if (!DECL_THUNK_P (fn_decl))
/* Plain this adjusting thunk. */
mangle_call_offset (fixed_offset, virtual_offset);
else
{
/* This adjusting thunk to covariant thunk. */
write_char ('c');
mangle_call_offset (fixed_offset, virtual_offset);
fixed_offset = ssize_int (THUNK_FIXED_OFFSET (fn_decl));
virtual_offset = THUNK_VIRTUAL_OFFSET (fn_decl);
if (virtual_offset)
virtual_offset = BINFO_VPTR_FIELD (virtual_offset);
mangle_call_offset (fixed_offset, virtual_offset);
fn_decl = THUNK_TARGET (fn_decl);
}
/* Scoped name. */
write_encoding (fn_decl);
result = finish_mangling_get_identifier ();
if (DEBUG_MANGLE)
fprintf (stderr, "mangle_thunk = %s\n\n", IDENTIFIER_POINTER (result));
return result;
}
/* Handle ABI backwards compatibility for past bugs where we didn't call
check_abi_tags in places where it's needed: call check_abi_tags and warn if
it makes a difference. If FOR_DECL is non-null, it's the declaration
that we're actually trying to mangle; if it's null, we're mangling the
guard variable for T. */
static void
maybe_check_abi_tags (tree t, tree for_decl, int ver)
{
if (DECL_ASSEMBLER_NAME_SET_P (t))
return;
tree oldtags = get_abi_tags (t);
mangle_decl (t);
tree newtags = get_abi_tags (t);
if (newtags && newtags != oldtags
&& abi_version_crosses (ver))
{
if (for_decl && DECL_THUNK_P (for_decl))
warning_at (DECL_SOURCE_LOCATION (t), OPT_Wabi,
"the mangled name of a thunk for %qD changes between "
"-fabi-version=%d and -fabi-version=%d",
t, flag_abi_version, warn_abi_version);
else if (for_decl)
warning_at (DECL_SOURCE_LOCATION (for_decl), OPT_Wabi,
"the mangled name of %qD changes between "
"-fabi-version=%d and -fabi-version=%d",
for_decl, flag_abi_version, warn_abi_version);
else
warning_at (DECL_SOURCE_LOCATION (t), OPT_Wabi,
"the mangled name of the initialization guard variable "
"for %qD changes between -fabi-version=%d and "
"-fabi-version=%d",
t, flag_abi_version, warn_abi_version);
}
}
/* Write out the appropriate string for this variable when generating
another mangled name based on this one. */
static void
write_guarded_var_name (const tree variable)
{
if (DECL_NAME (variable)
&& strncmp (IDENTIFIER_POINTER (DECL_NAME (variable)), "_ZGR", 4) == 0)
/* The name of a guard variable for a reference temporary should refer
to the reference, not the temporary. */
write_string (IDENTIFIER_POINTER (DECL_NAME (variable)) + 4);
else
write_name (variable, /*ignore_local_scope=*/0);
}
/* Return an identifier for the name of an initialization guard
variable for indicated VARIABLE. */
tree
mangle_guard_variable (const tree variable)
{
if (abi_version_at_least (10))
maybe_check_abi_tags (variable);
start_mangling (variable);
write_string ("_ZGV");
write_guarded_var_name (variable);
return finish_mangling_get_identifier ();
}
/* Return an identifier for the name of a thread_local initialization
function for VARIABLE. */
tree
mangle_tls_init_fn (const tree variable)
{
check_abi_tags (variable);
start_mangling (variable);
write_string ("_ZTH");
write_guarded_var_name (variable);
return finish_mangling_get_identifier ();
}
/* Return an identifier for the name of a thread_local wrapper
function for VARIABLE. */
#define TLS_WRAPPER_PREFIX "_ZTW"
tree
mangle_tls_wrapper_fn (const tree variable)
{
check_abi_tags (variable);
start_mangling (variable);
write_string (TLS_WRAPPER_PREFIX);
write_guarded_var_name (variable);
return finish_mangling_get_identifier ();
}
/* Return true iff FN is a thread_local wrapper function. */
bool
decl_tls_wrapper_p (const tree fn)
{
if (TREE_CODE (fn) != FUNCTION_DECL)
return false;
tree name = DECL_NAME (fn);
return strncmp (IDENTIFIER_POINTER (name), TLS_WRAPPER_PREFIX,
strlen (TLS_WRAPPER_PREFIX)) == 0;
}
/* Return an identifier for the name of a temporary variable used to
initialize a static reference. This isn't part of the ABI, but we might
as well call them something readable. */
static GTY(()) int temp_count;
tree
mangle_ref_init_variable (const tree variable)
{
start_mangling (variable);
write_string ("_ZGR");
check_abi_tags (variable);
write_name (variable, /*ignore_local_scope=*/0);
/* Avoid name clashes with aggregate initialization of multiple
references at once. */
write_unsigned_number (temp_count++);
return finish_mangling_get_identifier ();
}
/* Given a CLASS_TYPE, such as a record for std::bad_exception this
function generates a mangled name for the vtable map variable of
the class type. For example, if the class type is
"std::bad_exception", the mangled name for the class is
"St13bad_exception". This function would generate the name
"_ZN4_VTVISt13bad_exceptionE12__vtable_mapE", which unmangles as:
"_VTV<std::bad_exception>::__vtable_map". */
char *
get_mangled_vtable_map_var_name (tree class_type)
{
char *var_name = NULL;
const char *prefix = "_ZN4_VTVI";
const char *postfix = "E12__vtable_mapE";
gcc_assert (TREE_CODE (class_type) == RECORD_TYPE);
tree class_id = DECL_ASSEMBLER_NAME (TYPE_NAME (class_type));
if (strstr (IDENTIFIER_POINTER (class_id), "<anon>") != NULL)
{
class_id = get_mangled_id (TYPE_NAME (class_type));
vtbl_register_mangled_name (TYPE_NAME (class_type), class_id);
}
unsigned int len = strlen (IDENTIFIER_POINTER (class_id)) +
strlen (prefix) +
strlen (postfix) + 1;
var_name = (char *) xmalloc (len);
sprintf (var_name, "%s%s%s", prefix, IDENTIFIER_POINTER (class_id), postfix);
return var_name;
}
#include "gt-cp-mangle.h"
|