aboutsummaryrefslogtreecommitdiff
path: root/gdb/stabsread.c
blob: 12e164c2d228391c0a0bf243cde0c1f7721e59cb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
/* Support routines for decoding "stabs" debugging information format.

   Copyright (C) 1986-2020 Free Software Foundation, Inc.

   This file is part of GDB.

   This program 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 of the License, or
   (at your option) any later version.

   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */

/* Support routines for reading and decoding debugging information in
   the "stabs" format.  This format is used by some systems that use
   COFF or ELF where the stabs data is placed in a special section (as
   well as with many old systems that used the a.out object file
   format).  Avoid placing any object file format specific code in
   this file.  */

#include "defs.h"
#include "bfd.h"
#include "gdb_obstack.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "expression.h"
#include "symfile.h"
#include "objfiles.h"
#include "aout/stab_gnu.h"	/* We always use GNU stabs, not native.  */
#include "libaout.h"
#include "aout/aout64.h"
#include "gdb-stabs.h"
#include "buildsym-legacy.h"
#include "complaints.h"
#include "demangle.h"
#include "gdb-demangle.h"
#include "language.h"
#include "target-float.h"
#include "c-lang.h"
#include "cp-abi.h"
#include "cp-support.h"
#include <ctype.h>

#include "stabsread.h"

/* See stabsread.h for these globals.  */
unsigned int symnum;
const char *(*next_symbol_text_func) (struct objfile *);
unsigned char processing_gcc_compilation;
int within_function;
struct symbol *global_sym_chain[HASHSIZE];
struct pending_stabs *global_stabs;
int previous_stab_code;
int *this_object_header_files;
int n_this_object_header_files;
int n_allocated_this_object_header_files;

struct nextfield
{
  struct nextfield *next;

  /* This is the raw visibility from the stab.  It is not checked
     for being one of the visibilities we recognize, so code which
     examines this field better be able to deal.  */
  int visibility;

  struct field field;
};

struct next_fnfieldlist
{
  struct next_fnfieldlist *next;
  struct fn_fieldlist fn_fieldlist;
};

/* The routines that read and process a complete stabs for a C struct or 
   C++ class pass lists of data member fields and lists of member function
   fields in an instance of a field_info structure, as defined below.
   This is part of some reorganization of low level C++ support and is
   expected to eventually go away...  (FIXME) */

struct stab_field_info
  {
    struct nextfield *list = nullptr;
    struct next_fnfieldlist *fnlist = nullptr;

    auto_obstack obstack;
  };

static void
read_one_struct_field (struct stab_field_info *, const char **, const char *,
		       struct type *, struct objfile *);

static struct type *dbx_alloc_type (int[2], struct objfile *);

static long read_huge_number (const char **, int, int *, int);

static struct type *error_type (const char **, struct objfile *);

static void
patch_block_stabs (struct pending *, struct pending_stabs *,
		   struct objfile *);

static void fix_common_block (struct symbol *, CORE_ADDR);

static int read_type_number (const char **, int *);

static struct type *read_type (const char **, struct objfile *);

static struct type *read_range_type (const char **, int[2],
				     int, struct objfile *);

static struct type *read_sun_builtin_type (const char **,
					   int[2], struct objfile *);

static struct type *read_sun_floating_type (const char **, int[2],
					    struct objfile *);

static struct type *read_enum_type (const char **, struct type *, struct objfile *);

static struct type *rs6000_builtin_type (int, struct objfile *);

static int
read_member_functions (struct stab_field_info *, const char **, struct type *,
		       struct objfile *);

static int
read_struct_fields (struct stab_field_info *, const char **, struct type *,
		    struct objfile *);

static int
read_baseclasses (struct stab_field_info *, const char **, struct type *,
		  struct objfile *);

static int
read_tilde_fields (struct stab_field_info *, const char **, struct type *,
		   struct objfile *);

static int attach_fn_fields_to_type (struct stab_field_info *, struct type *);

static int attach_fields_to_type (struct stab_field_info *, struct type *,
				  struct objfile *);

static struct type *read_struct_type (const char **, struct type *,
                                      enum type_code,
				      struct objfile *);

static struct type *read_array_type (const char **, struct type *,
				     struct objfile *);

static struct field *read_args (const char **, int, struct objfile *,
				int *, int *);

static void add_undefined_type (struct type *, int[2]);

static int
read_cpp_abbrev (struct stab_field_info *, const char **, struct type *,
		 struct objfile *);

static const char *find_name_end (const char *name);

static int process_reference (const char **string);

void stabsread_clear_cache (void);

static const char vptr_name[] = "_vptr$";
static const char vb_name[] = "_vb$";

static void
invalid_cpp_abbrev_complaint (const char *arg1)
{
  complaint (_("invalid C++ abbreviation `%s'"), arg1);
}

static void
reg_value_complaint (int regnum, int num_regs, const char *sym)
{
  complaint (_("bad register number %d (max %d) in symbol %s"),
             regnum, num_regs - 1, sym);
}

static void
stabs_general_complaint (const char *arg1)
{
  complaint ("%s", arg1);
}

/* Make a list of forward references which haven't been defined.  */

static struct type **undef_types;
static int undef_types_allocated;
static int undef_types_length;
static struct symbol *current_symbol = NULL;

/* Make a list of nameless types that are undefined.
   This happens when another type is referenced by its number
   before this type is actually defined.  For instance "t(0,1)=k(0,2)"
   and type (0,2) is defined only later.  */

struct nat
{
  int typenums[2];
  struct type *type;
};
static struct nat *noname_undefs;
static int noname_undefs_allocated;
static int noname_undefs_length;

/* Check for and handle cretinous stabs symbol name continuation!  */
#define STABS_CONTINUE(pp,objfile)				\
  do {							\
    if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
      *(pp) = next_symbol_text (objfile);	\
  } while (0)

/* Vector of types defined so far, indexed by their type numbers.
   (In newer sun systems, dbx uses a pair of numbers in parens,
   as in "(SUBFILENUM,NUMWITHINSUBFILE)".
   Then these numbers must be translated through the type_translations
   hash table to get the index into the type vector.)  */

static struct type **type_vector;

/* Number of elements allocated for type_vector currently.  */

static int type_vector_length;

/* Initial size of type vector.  Is realloc'd larger if needed, and
   realloc'd down to the size actually used, when completed.  */

#define INITIAL_TYPE_VECTOR_LENGTH 160


/* Look up a dbx type-number pair.  Return the address of the slot
   where the type for that number-pair is stored.
   The number-pair is in TYPENUMS.

   This can be used for finding the type associated with that pair
   or for associating a new type with the pair.  */

static struct type **
dbx_lookup_type (int typenums[2], struct objfile *objfile)
{
  int filenum = typenums[0];
  int index = typenums[1];
  unsigned old_len;
  int real_filenum;
  struct header_file *f;
  int f_orig_length;

  if (filenum == -1)		/* -1,-1 is for temporary types.  */
    return 0;

  if (filenum < 0 || filenum >= n_this_object_header_files)
    {
      complaint (_("Invalid symbol data: type number "
		   "(%d,%d) out of range at symtab pos %d."),
		 filenum, index, symnum);
      goto error_return;
    }

  if (filenum == 0)
    {
      if (index < 0)
	{
	  /* Caller wants address of address of type.  We think
	     that negative (rs6k builtin) types will never appear as
	     "lvalues", (nor should they), so we stuff the real type
	     pointer into a temp, and return its address.  If referenced,
	     this will do the right thing.  */
	  static struct type *temp_type;

	  temp_type = rs6000_builtin_type (index, objfile);
	  return &temp_type;
	}

      /* Type is defined outside of header files.
         Find it in this object file's type vector.  */
      if (index >= type_vector_length)
	{
	  old_len = type_vector_length;
	  if (old_len == 0)
	    {
	      type_vector_length = INITIAL_TYPE_VECTOR_LENGTH;
	      type_vector = XNEWVEC (struct type *, type_vector_length);
	    }
	  while (index >= type_vector_length)
	    {
	      type_vector_length *= 2;
	    }
	  type_vector = (struct type **)
	    xrealloc ((char *) type_vector,
		      (type_vector_length * sizeof (struct type *)));
	  memset (&type_vector[old_len], 0,
		  (type_vector_length - old_len) * sizeof (struct type *));
	}
      return (&type_vector[index]);
    }
  else
    {
      real_filenum = this_object_header_files[filenum];

      if (real_filenum >= N_HEADER_FILES (objfile))
	{
	  static struct type *temp_type;

	  warning (_("GDB internal error: bad real_filenum"));

	error_return:
	  temp_type = objfile_type (objfile)->builtin_error;
	  return &temp_type;
	}

      f = HEADER_FILES (objfile) + real_filenum;

      f_orig_length = f->length;
      if (index >= f_orig_length)
	{
	  while (index >= f->length)
	    {
	      f->length *= 2;
	    }
	  f->vector = (struct type **)
	    xrealloc ((char *) f->vector, f->length * sizeof (struct type *));
	  memset (&f->vector[f_orig_length], 0,
		  (f->length - f_orig_length) * sizeof (struct type *));
	}
      return (&f->vector[index]);
    }
}

/* Make sure there is a type allocated for type numbers TYPENUMS
   and return the type object.
   This can create an empty (zeroed) type object.
   TYPENUMS may be (-1, -1) to return a new type object that is not
   put into the type vector, and so may not be referred to by number.  */

static struct type *
dbx_alloc_type (int typenums[2], struct objfile *objfile)
{
  struct type **type_addr;

  if (typenums[0] == -1)
    {
      return (alloc_type (objfile));
    }

  type_addr = dbx_lookup_type (typenums, objfile);

  /* If we are referring to a type not known at all yet,
     allocate an empty type for it.
     We will fill it in later if we find out how.  */
  if (*type_addr == 0)
    {
      *type_addr = alloc_type (objfile);
    }

  return (*type_addr);
}

/* Allocate a floating-point type of size BITS.  */

static struct type *
dbx_init_float_type (struct objfile *objfile, int bits)
{
  struct gdbarch *gdbarch = objfile->arch ();
  const struct floatformat **format;
  struct type *type;

  format = gdbarch_floatformat_for_type (gdbarch, NULL, bits);
  if (format)
    type = init_float_type (objfile, bits, NULL, format);
  else
    type = init_type (objfile, TYPE_CODE_ERROR, bits, NULL);

  return type;
}

/* for all the stabs in a given stab vector, build appropriate types 
   and fix their symbols in given symbol vector.  */

static void
patch_block_stabs (struct pending *symbols, struct pending_stabs *stabs,
		   struct objfile *objfile)
{
  int ii;
  char *name;
  const char *pp;
  struct symbol *sym;

  if (stabs)
    {
      /* for all the stab entries, find their corresponding symbols and 
         patch their types!  */

      for (ii = 0; ii < stabs->count; ++ii)
	{
	  name = stabs->stab[ii];
	  pp = (char *) strchr (name, ':');
	  gdb_assert (pp);	/* Must find a ':' or game's over.  */
	  while (pp[1] == ':')
	    {
	      pp += 2;
	      pp = (char *) strchr (pp, ':');
	    }
	  sym = find_symbol_in_list (symbols, name, pp - name);
	  if (!sym)
	    {
	      /* FIXME-maybe: it would be nice if we noticed whether
	         the variable was defined *anywhere*, not just whether
	         it is defined in this compilation unit.  But neither
	         xlc or GCC seem to need such a definition, and until
	         we do psymtabs (so that the minimal symbols from all
	         compilation units are available now), I'm not sure
	         how to get the information.  */

	      /* On xcoff, if a global is defined and never referenced,
	         ld will remove it from the executable.  There is then
	         a N_GSYM stab for it, but no regular (C_EXT) symbol.  */
	      sym = new (&objfile->objfile_obstack) symbol;
	      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
	      SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT;
	      sym->set_linkage_name
		(obstack_strndup (&objfile->objfile_obstack, name, pp - name));
	      pp += 2;
	      if (*(pp - 1) == 'F' || *(pp - 1) == 'f')
		{
		  /* I don't think the linker does this with functions,
		     so as far as I know this is never executed.
		     But it doesn't hurt to check.  */
		  SYMBOL_TYPE (sym) =
		    lookup_function_type (read_type (&pp, objfile));
		}
	      else
		{
		  SYMBOL_TYPE (sym) = read_type (&pp, objfile);
		}
	      add_symbol_to_list (sym, get_global_symbols ());
	    }
	  else
	    {
	      pp += 2;
	      if (*(pp - 1) == 'F' || *(pp - 1) == 'f')
		{
		  SYMBOL_TYPE (sym) =
		    lookup_function_type (read_type (&pp, objfile));
		}
	      else
		{
		  SYMBOL_TYPE (sym) = read_type (&pp, objfile);
		}
	    }
	}
    }
}


/* Read a number by which a type is referred to in dbx data,
   or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
   Just a single number N is equivalent to (0,N).
   Return the two numbers by storing them in the vector TYPENUMS.
   TYPENUMS will then be used as an argument to dbx_lookup_type.

   Returns 0 for success, -1 for error.  */

static int
read_type_number (const char **pp, int *typenums)
{
  int nbits;

  if (**pp == '(')
    {
      (*pp)++;
      typenums[0] = read_huge_number (pp, ',', &nbits, 0);
      if (nbits != 0)
	return -1;
      typenums[1] = read_huge_number (pp, ')', &nbits, 0);
      if (nbits != 0)
	return -1;
    }
  else
    {
      typenums[0] = 0;
      typenums[1] = read_huge_number (pp, 0, &nbits, 0);
      if (nbits != 0)
	return -1;
    }
  return 0;
}


#define VISIBILITY_PRIVATE	'0'	/* Stabs character for private field */
#define VISIBILITY_PROTECTED	'1'	/* Stabs character for protected fld */
#define VISIBILITY_PUBLIC	'2'	/* Stabs character for public field */
#define VISIBILITY_IGNORE	'9'	/* Optimized out or zero length */

/* Structure for storing pointers to reference definitions for fast lookup 
   during "process_later".  */

struct ref_map
{
  const char *stabs;
  CORE_ADDR value;
  struct symbol *sym;
};

#define MAX_CHUNK_REFS 100
#define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map))
#define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE)

static struct ref_map *ref_map;

/* Ptr to free cell in chunk's linked list.  */
static int ref_count = 0;

/* Number of chunks malloced.  */
static int ref_chunk = 0;

/* This file maintains a cache of stabs aliases found in the symbol
   table.  If the symbol table changes, this cache must be cleared
   or we are left holding onto data in invalid obstacks.  */
void
stabsread_clear_cache (void)
{
  ref_count = 0;
  ref_chunk = 0;
}

/* Create array of pointers mapping refids to symbols and stab strings.
   Add pointers to reference definition symbols and/or their values as we 
   find them, using their reference numbers as our index.
   These will be used later when we resolve references.  */
void
ref_add (int refnum, struct symbol *sym, const char *stabs, CORE_ADDR value)
{
  if (ref_count == 0)
    ref_chunk = 0;
  if (refnum >= ref_count)
    ref_count = refnum + 1;
  if (ref_count > ref_chunk * MAX_CHUNK_REFS)
    {
      int new_slots = ref_count - ref_chunk * MAX_CHUNK_REFS;
      int new_chunks = new_slots / MAX_CHUNK_REFS + 1;

      ref_map = (struct ref_map *)
	xrealloc (ref_map, REF_MAP_SIZE (ref_chunk + new_chunks));
      memset (ref_map + ref_chunk * MAX_CHUNK_REFS, 0, 
	      new_chunks * REF_CHUNK_SIZE);
      ref_chunk += new_chunks;
    }
  ref_map[refnum].stabs = stabs;
  ref_map[refnum].sym = sym;
  ref_map[refnum].value = value;
}

/* Return defined sym for the reference REFNUM.  */
struct symbol *
ref_search (int refnum)
{
  if (refnum < 0 || refnum > ref_count)
    return 0;
  return ref_map[refnum].sym;
}

/* Parse a reference id in STRING and return the resulting
   reference number.  Move STRING beyond the reference id.  */

static int
process_reference (const char **string)
{
  const char *p;
  int refnum = 0;

  if (**string != '#')
    return 0;

  /* Advance beyond the initial '#'.  */
  p = *string + 1;

  /* Read number as reference id.  */
  while (*p && isdigit (*p))
    {
      refnum = refnum * 10 + *p - '0';
      p++;
    }
  *string = p;
  return refnum;
}

/* If STRING defines a reference, store away a pointer to the reference 
   definition for later use.  Return the reference number.  */

int
symbol_reference_defined (const char **string)
{
  const char *p = *string;
  int refnum = 0;

  refnum = process_reference (&p);

  /* Defining symbols end in '='.  */
  if (*p == '=')
    {
      /* Symbol is being defined here.  */
      *string = p + 1;
      return refnum;
    }
  else
    {
      /* Must be a reference.  Either the symbol has already been defined,
         or this is a forward reference to it.  */
      *string = p;
      return -1;
    }
}

static int
stab_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch)
{
  int regno = gdbarch_stab_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym));

  if (regno < 0 || regno >= gdbarch_num_cooked_regs (gdbarch))
    {
      reg_value_complaint (regno, gdbarch_num_cooked_regs (gdbarch),
			   sym->print_name ());

      regno = gdbarch_sp_regnum (gdbarch); /* Known safe, though useless.  */
    }

  return regno;
}

static const struct symbol_register_ops stab_register_funcs = {
  stab_reg_to_regnum
};

/* The "aclass" indices for computed symbols.  */

static int stab_register_index;
static int stab_regparm_index;

struct symbol *
define_symbol (CORE_ADDR valu, const char *string, int desc, int type,
	       struct objfile *objfile)
{
  struct gdbarch *gdbarch = objfile->arch ();
  struct symbol *sym;
  const char *p = find_name_end (string);
  int deftype;
  int synonym = 0;
  int i;

  /* We would like to eliminate nameless symbols, but keep their types.
     E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
     to type 2, but, should not create a symbol to address that type.  Since
     the symbol will be nameless, there is no way any user can refer to it.  */

  int nameless;

  /* Ignore syms with empty names.  */
  if (string[0] == 0)
    return 0;

  /* Ignore old-style symbols from cc -go.  */
  if (p == 0)
    return 0;

  while (p[1] == ':')
    {
      p += 2;
      p = strchr (p, ':');
      if (p == NULL)
	{
	  complaint (
		     _("Bad stabs string '%s'"), string);
	  return NULL;
	}
    }

  /* If a nameless stab entry, all we need is the type, not the symbol.
     e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
  nameless = (p == string || ((string[0] == ' ') && (string[1] == ':')));

  current_symbol = sym = new (&objfile->objfile_obstack) symbol;

  if (processing_gcc_compilation)
    {
      /* GCC 2.x puts the line number in desc.  SunOS apparently puts in the
         number of bytes occupied by a type or object, which we ignore.  */
      SYMBOL_LINE (sym) = desc;
    }
  else
    {
      SYMBOL_LINE (sym) = 0;	/* unknown */
    }

  sym->set_language (get_current_subfile ()->language,
		     &objfile->objfile_obstack);

  if (is_cplus_marker (string[0]))
    {
      /* Special GNU C++ names.  */
      switch (string[1])
	{
	case 't':
	  sym->set_linkage_name ("this");
	  break;

	case 'v':		/* $vtbl_ptr_type */
	  goto normal;

	case 'e':
	  sym->set_linkage_name ("eh_throw");
	  break;

	case '_':
	  /* This was an anonymous type that was never fixed up.  */
	  goto normal;

	case 'X':
	  /* SunPRO (3.0 at least) static variable encoding.  */
	  if (gdbarch_static_transform_name_p (gdbarch))
	    goto normal;
	  /* fall through */

	default:
	  complaint (_("Unknown C++ symbol name `%s'"),
		     string);
	  goto normal;		/* Do *something* with it.  */
	}
    }
  else
    {
    normal:
      gdb::unique_xmalloc_ptr<char> new_name;

      if (sym->language () == language_cplus)
	{
	  char *name = (char *) alloca (p - string + 1);

	  memcpy (name, string, p - string);
	  name[p - string] = '\0';
	  new_name = cp_canonicalize_string (name);
	}
      if (new_name != nullptr)
	sym->compute_and_set_names (new_name.get (), true, objfile->per_bfd);
      else
	sym->compute_and_set_names (gdb::string_view (string, p - string), true,
				    objfile->per_bfd);

      if (sym->language () == language_cplus)
	cp_scan_for_anonymous_namespaces (get_buildsym_compunit (), sym,
					  objfile);

    }
  p++;

  /* Determine the type of name being defined.  */
#if 0
  /* Getting GDB to correctly skip the symbol on an undefined symbol
     descriptor and not ever dump core is a very dodgy proposition if
     we do things this way.  I say the acorn RISC machine can just
     fix their compiler.  */
  /* The Acorn RISC machine's compiler can put out locals that don't
     start with "234=" or "(3,4)=", so assume anything other than the
     deftypes we know how to handle is a local.  */
  if (!strchr ("cfFGpPrStTvVXCR", *p))
#else
  if (isdigit (*p) || *p == '(' || *p == '-')
#endif
    deftype = 'l';
  else
    deftype = *p++;

  switch (deftype)
    {
    case 'c':
      /* c is a special case, not followed by a type-number.
         SYMBOL:c=iVALUE for an integer constant symbol.
         SYMBOL:c=rVALUE for a floating constant symbol.
         SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
         e.g. "b:c=e6,0" for "const b = blob1"
         (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;").  */
      if (*p != '=')
	{
	  SYMBOL_ACLASS_INDEX (sym) = LOC_CONST;
	  SYMBOL_TYPE (sym) = error_type (&p, objfile);
	  SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
	  add_symbol_to_list (sym, get_file_symbols ());
	  return sym;
	}
      ++p;
      switch (*p++)
	{
	case 'r':
	  {
	    gdb_byte *dbl_valu;
	    struct type *dbl_type;

	    dbl_type = objfile_type (objfile)->builtin_double;
	    dbl_valu
	      = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack,
					    TYPE_LENGTH (dbl_type));

	    target_float_from_string (dbl_valu, dbl_type, std::string (p));

	    SYMBOL_TYPE (sym) = dbl_type;
	    SYMBOL_VALUE_BYTES (sym) = dbl_valu;
	    SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES;
	  }
	  break;
	case 'i':
	  {
	    /* Defining integer constants this way is kind of silly,
	       since 'e' constants allows the compiler to give not
	       only the value, but the type as well.  C has at least
	       int, long, unsigned int, and long long as constant
	       types; other languages probably should have at least
	       unsigned as well as signed constants.  */

	    SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_long;
	    SYMBOL_VALUE (sym) = atoi (p);
	    SYMBOL_ACLASS_INDEX (sym) = LOC_CONST;
	  }
	  break;

	case 'c':
	  {
	    SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_char;
	    SYMBOL_VALUE (sym) = atoi (p);
	    SYMBOL_ACLASS_INDEX (sym) = LOC_CONST;
	  }
	  break;

	case 's':
	  {
	    struct type *range_type;
	    int ind = 0;
	    char quote = *p++;
	    gdb_byte *string_local = (gdb_byte *) alloca (strlen (p));
	    gdb_byte *string_value;

	    if (quote != '\'' && quote != '"')
	      {
		SYMBOL_ACLASS_INDEX (sym) = LOC_CONST;
		SYMBOL_TYPE (sym) = error_type (&p, objfile);
		SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
		add_symbol_to_list (sym, get_file_symbols ());
		return sym;
	      }

	    /* Find matching quote, rejecting escaped quotes.  */
	    while (*p && *p != quote)
	      {
		if (*p == '\\' && p[1] == quote)
		  {
		    string_local[ind] = (gdb_byte) quote;
		    ind++;
		    p += 2;
		  }
		else if (*p) 
		  {
		    string_local[ind] = (gdb_byte) (*p);
		    ind++;
		    p++;
		  }
	      }
	    if (*p != quote)
	      {
		SYMBOL_ACLASS_INDEX (sym) = LOC_CONST;
		SYMBOL_TYPE (sym) = error_type (&p, objfile);
		SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
		add_symbol_to_list (sym, get_file_symbols ());
		return sym;
	      }

	    /* NULL terminate the string.  */
	    string_local[ind] = 0;
	    range_type
	      = create_static_range_type (NULL,
					  objfile_type (objfile)->builtin_int,
					  0, ind);
	    SYMBOL_TYPE (sym) = create_array_type (NULL,
				  objfile_type (objfile)->builtin_char,
				  range_type);
	    string_value
	      = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, ind + 1);
	    memcpy (string_value, string_local, ind + 1);
	    p++;

	    SYMBOL_VALUE_BYTES (sym) = string_value;
	    SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES;
	  }
	  break;

	case 'e':
	  /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
	     can be represented as integral.
	     e.g. "b:c=e6,0" for "const b = blob1"
	     (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;").  */
	  {
	    SYMBOL_ACLASS_INDEX (sym) = LOC_CONST;
	    SYMBOL_TYPE (sym) = read_type (&p, objfile);

	    if (*p != ',')
	      {
		SYMBOL_TYPE (sym) = error_type (&p, objfile);
		break;
	      }
	    ++p;

	    /* If the value is too big to fit in an int (perhaps because
	       it is unsigned), or something like that, we silently get
	       a bogus value.  The type and everything else about it is
	       correct.  Ideally, we should be using whatever we have
	       available for parsing unsigned and long long values,
	       however.  */
	    SYMBOL_VALUE (sym) = atoi (p);
	  }
	  break;
	default:
	  {
	    SYMBOL_ACLASS_INDEX (sym) = LOC_CONST;
	    SYMBOL_TYPE (sym) = error_type (&p, objfile);
	  }
	}
      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
      add_symbol_to_list (sym, get_file_symbols ());
      return sym;

    case 'C':
      /* The name of a caught exception.  */
      SYMBOL_TYPE (sym) = read_type (&p, objfile);
      SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL;
      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
      SET_SYMBOL_VALUE_ADDRESS (sym, valu);
      add_symbol_to_list (sym, get_local_symbols ());
      break;

    case 'f':
      /* A static function definition.  */
      SYMBOL_TYPE (sym) = read_type (&p, objfile);
      SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK;
      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
      add_symbol_to_list (sym, get_file_symbols ());
      /* fall into process_function_types.  */

    process_function_types:
      /* Function result types are described as the result type in stabs.
         We need to convert this to the function-returning-type-X type
         in GDB.  E.g. "int" is converted to "function returning int".  */
      if (SYMBOL_TYPE (sym)->code () != TYPE_CODE_FUNC)
	SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym));

      /* All functions in C++ have prototypes.  Stabs does not offer an
         explicit way to identify prototyped or unprototyped functions,
         but both GCC and Sun CC emit stabs for the "call-as" type rather
         than the "declared-as" type for unprototyped functions, so
         we treat all functions as if they were prototyped.  This is used
         primarily for promotion when calling the function from GDB.  */
      TYPE_PROTOTYPED (SYMBOL_TYPE (sym)) = 1;

      /* fall into process_prototype_types.  */

    process_prototype_types:
      /* Sun acc puts declared types of arguments here.  */
      if (*p == ';')
	{
	  struct type *ftype = SYMBOL_TYPE (sym);
	  int nsemi = 0;
	  int nparams = 0;
	  const char *p1 = p;

	  /* Obtain a worst case guess for the number of arguments
	     by counting the semicolons.  */
	  while (*p1)
	    {
	      if (*p1++ == ';')
		nsemi++;
	    }

	  /* Allocate parameter information fields and fill them in.  */
	  TYPE_FIELDS (ftype) = (struct field *)
	    TYPE_ALLOC (ftype, nsemi * sizeof (struct field));
	  while (*p++ == ';')
	    {
	      struct type *ptype;

	      /* A type number of zero indicates the start of varargs.
	         FIXME: GDB currently ignores vararg functions.  */
	      if (p[0] == '0' && p[1] == '\0')
		break;
	      ptype = read_type (&p, objfile);

	      /* The Sun compilers mark integer arguments, which should
	         be promoted to the width of the calling conventions, with
	         a type which references itself.  This type is turned into
	         a TYPE_CODE_VOID type by read_type, and we have to turn
	         it back into builtin_int here.
	         FIXME: Do we need a new builtin_promoted_int_arg ?  */
	      if (ptype->code () == TYPE_CODE_VOID)
		ptype = objfile_type (objfile)->builtin_int;
	      TYPE_FIELD_TYPE (ftype, nparams) = ptype;
	      TYPE_FIELD_ARTIFICIAL (ftype, nparams++) = 0;
	    }
	  TYPE_NFIELDS (ftype) = nparams;
	  TYPE_PROTOTYPED (ftype) = 1;
	}
      break;

    case 'F':
      /* A global function definition.  */
      SYMBOL_TYPE (sym) = read_type (&p, objfile);
      SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK;
      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
      add_symbol_to_list (sym, get_global_symbols ());
      goto process_function_types;

    case 'G':
      /* For a class G (global) symbol, it appears that the
         value is not correct.  It is necessary to search for the
         corresponding linker definition to find the value.
         These definitions appear at the end of the namelist.  */
      SYMBOL_TYPE (sym) = read_type (&p, objfile);
      SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC;
      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
      /* Don't add symbol references to global_sym_chain.
         Symbol references don't have valid names and wont't match up with
         minimal symbols when the global_sym_chain is relocated.
         We'll fixup symbol references when we fixup the defining symbol.  */
      if (sym->linkage_name () && sym->linkage_name ()[0] != '#')
	{
	  i = hashname (sym->linkage_name ());
	  SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i];
	  global_sym_chain[i] = sym;
	}
      add_symbol_to_list (sym, get_global_symbols ());
      break;

      /* This case is faked by a conditional above,
         when there is no code letter in the dbx data.
         Dbx data never actually contains 'l'.  */
    case 's':
    case 'l':
      SYMBOL_TYPE (sym) = read_type (&p, objfile);
      SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL;
      SYMBOL_VALUE (sym) = valu;
      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
      add_symbol_to_list (sym, get_local_symbols ());
      break;

    case 'p':
      if (*p == 'F')
	/* pF is a two-letter code that means a function parameter in Fortran.
	   The type-number specifies the type of the return value.
	   Translate it into a pointer-to-function type.  */
	{
	  p++;
	  SYMBOL_TYPE (sym)
	    = lookup_pointer_type
	    (lookup_function_type (read_type (&p, objfile)));
	}
      else
	SYMBOL_TYPE (sym) = read_type (&p, objfile);

      SYMBOL_ACLASS_INDEX (sym) = LOC_ARG;
      SYMBOL_VALUE (sym) = valu;
      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
      SYMBOL_IS_ARGUMENT (sym) = 1;
      add_symbol_to_list (sym, get_local_symbols ());

      if (gdbarch_byte_order (gdbarch) != BFD_ENDIAN_BIG)
	{
	  /* On little-endian machines, this crud is never necessary,
	     and, if the extra bytes contain garbage, is harmful.  */
	  break;
	}

      /* If it's gcc-compiled, if it says `short', believe it.  */
      if (processing_gcc_compilation
	  || gdbarch_believe_pcc_promotion (gdbarch))
	break;

      if (!gdbarch_believe_pcc_promotion (gdbarch))
	{
	  /* If PCC says a parameter is a short or a char, it is
	     really an int.  */
	  if (TYPE_LENGTH (SYMBOL_TYPE (sym))
	      < gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT
	      && SYMBOL_TYPE (sym)->code () == TYPE_CODE_INT)
	    {
	      SYMBOL_TYPE (sym) =
		TYPE_UNSIGNED (SYMBOL_TYPE (sym))
		? objfile_type (objfile)->builtin_unsigned_int
		: objfile_type (objfile)->builtin_int;
	    }
	  break;
	}
      /* Fall through.  */

    case 'P':
      /* acc seems to use P to declare the prototypes of functions that
         are referenced by this file.  gdb is not prepared to deal
         with this extra information.  FIXME, it ought to.  */
      if (type == N_FUN)
	{
	  SYMBOL_TYPE (sym) = read_type (&p, objfile);
	  goto process_prototype_types;
	}
      /*FALLTHROUGH */

    case 'R':
      /* Parameter which is in a register.  */
      SYMBOL_TYPE (sym) = read_type (&p, objfile);
      SYMBOL_ACLASS_INDEX (sym) = stab_register_index;
      SYMBOL_IS_ARGUMENT (sym) = 1;
      SYMBOL_VALUE (sym) = valu;
      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
      add_symbol_to_list (sym, get_local_symbols ());
      break;

    case 'r':
      /* Register variable (either global or local).  */
      SYMBOL_TYPE (sym) = read_type (&p, objfile);
      SYMBOL_ACLASS_INDEX (sym) = stab_register_index;
      SYMBOL_VALUE (sym) = valu;
      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
      if (within_function)
	{
	  /* Sun cc uses a pair of symbols, one 'p' and one 'r', with
	     the same name to represent an argument passed in a
	     register.  GCC uses 'P' for the same case.  So if we find
	     such a symbol pair we combine it into one 'P' symbol.
	     For Sun cc we need to do this regardless of stabs_argument_has_addr, because the compiler puts out
	     the 'p' symbol even if it never saves the argument onto
	     the stack.

	     On most machines, we want to preserve both symbols, so
	     that we can still get information about what is going on
	     with the stack (VAX for computing args_printed, using
	     stack slots instead of saved registers in backtraces,
	     etc.).

	     Note that this code illegally combines
	     main(argc) struct foo argc; { register struct foo argc; }
	     but this case is considered pathological and causes a warning
	     from a decent compiler.  */

	  struct pending *local_symbols = *get_local_symbols ();
	  if (local_symbols
	      && local_symbols->nsyms > 0
	      && gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym)))
	    {
	      struct symbol *prev_sym;

	      prev_sym = local_symbols->symbol[local_symbols->nsyms - 1];
	      if ((SYMBOL_CLASS (prev_sym) == LOC_REF_ARG
		   || SYMBOL_CLASS (prev_sym) == LOC_ARG)
		  && strcmp (prev_sym->linkage_name (),
			     sym->linkage_name ()) == 0)
		{
		  SYMBOL_ACLASS_INDEX (prev_sym) = stab_register_index;
		  /* Use the type from the LOC_REGISTER; that is the type
		     that is actually in that register.  */
		  SYMBOL_TYPE (prev_sym) = SYMBOL_TYPE (sym);
		  SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym);
		  sym = prev_sym;
		  break;
		}
	    }
	  add_symbol_to_list (sym, get_local_symbols ());
	}
      else
	add_symbol_to_list (sym, get_file_symbols ());
      break;

    case 'S':
      /* Static symbol at top level of file.  */
      SYMBOL_TYPE (sym) = read_type (&p, objfile);
      SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC;
      SET_SYMBOL_VALUE_ADDRESS (sym, valu);
      if (gdbarch_static_transform_name_p (gdbarch)
	  && gdbarch_static_transform_name (gdbarch, sym->linkage_name ())
	     != sym->linkage_name ())
	{
	  struct bound_minimal_symbol msym;

	  msym = lookup_minimal_symbol (sym->linkage_name (), NULL, objfile);
	  if (msym.minsym != NULL)
	    {
	      const char *new_name = gdbarch_static_transform_name
		(gdbarch, sym->linkage_name ());

	      sym->set_linkage_name (new_name);
	      SET_SYMBOL_VALUE_ADDRESS (sym,
					BMSYMBOL_VALUE_ADDRESS (msym));
	    }
	}
      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
      add_symbol_to_list (sym, get_file_symbols ());
      break;

    case 't':
      /* In Ada, there is no distinction between typedef and non-typedef;
         any type declaration implicitly has the equivalent of a typedef,
         and thus 't' is in fact equivalent to 'Tt'.

         Therefore, for Ada units, we check the character immediately
         before the 't', and if we do not find a 'T', then make sure to
         create the associated symbol in the STRUCT_DOMAIN ('t' definitions
         will be stored in the VAR_DOMAIN).  If the symbol was indeed
         defined as 'Tt' then the STRUCT_DOMAIN symbol will be created
         elsewhere, so we don't need to take care of that.
         
         This is important to do, because of forward references:
         The cleanup of undefined types stored in undef_types only uses
         STRUCT_DOMAIN symbols to perform the replacement.  */
      synonym = (sym->language () == language_ada && p[-2] != 'T');

      /* Typedef */
      SYMBOL_TYPE (sym) = read_type (&p, objfile);

      /* For a nameless type, we don't want a create a symbol, thus we
         did not use `sym'.  Return without further processing.  */
      if (nameless)
	return NULL;

      SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF;
      SYMBOL_VALUE (sym) = valu;
      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
      /* C++ vagaries: we may have a type which is derived from
         a base type which did not have its name defined when the
         derived class was output.  We fill in the derived class's
         base part member's name here in that case.  */
      if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL)
	if ((SYMBOL_TYPE (sym)->code () == TYPE_CODE_STRUCT
	     || SYMBOL_TYPE (sym)->code () == TYPE_CODE_UNION)
	    && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)))
	  {
	    int j;

	    for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--)
	      if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0)
		TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) =
		  TYPE_NAME (TYPE_BASECLASS (SYMBOL_TYPE (sym), j));
	  }

      if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL)
	{
	  if ((SYMBOL_TYPE (sym)->code () == TYPE_CODE_PTR
	       && strcmp (sym->linkage_name (), vtbl_ptr_name))
	      || SYMBOL_TYPE (sym)->code () == TYPE_CODE_FUNC)
	    {
	      /* If we are giving a name to a type such as "pointer to
	         foo" or "function returning foo", we better not set
	         the TYPE_NAME.  If the program contains "typedef char
	         *caddr_t;", we don't want all variables of type char
	         * to print as caddr_t.  This is not just a
	         consequence of GDB's type management; PCC and GCC (at
	         least through version 2.4) both output variables of
	         either type char * or caddr_t with the type number
	         defined in the 't' symbol for caddr_t.  If a future
	         compiler cleans this up it GDB is not ready for it
	         yet, but if it becomes ready we somehow need to
	         disable this check (without breaking the PCC/GCC2.4
	         case).

	         Sigh.

	         Fortunately, this check seems not to be necessary
	         for anything except pointers or functions.  */
              /* ezannoni: 2000-10-26.  This seems to apply for
		 versions of gcc older than 2.8.  This was the original
		 problem: with the following code gdb would tell that
		 the type for name1 is caddr_t, and func is char().

	         typedef char *caddr_t;
		 char *name2;
		 struct x
		 {
		   char *name1;
		 } xx;
		 char *func()
		 {
		 }
		 main () {}
		 */

	      /* Pascal accepts names for pointer types.  */
	      if (get_current_subfile ()->language == language_pascal)
		SYMBOL_TYPE (sym)->set_name (sym->linkage_name ());
	    }
	  else
	    SYMBOL_TYPE (sym)->set_name (sym->linkage_name ());
	}

      add_symbol_to_list (sym, get_file_symbols ());

      if (synonym)
        {
          /* Create the STRUCT_DOMAIN clone.  */
          struct symbol *struct_sym = new (&objfile->objfile_obstack) symbol;

          *struct_sym = *sym;
          SYMBOL_ACLASS_INDEX (struct_sym) = LOC_TYPEDEF;
          SYMBOL_VALUE (struct_sym) = valu;
          SYMBOL_DOMAIN (struct_sym) = STRUCT_DOMAIN;
          if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0)
	    SYMBOL_TYPE (sym)->set_name
	      (obconcat (&objfile->objfile_obstack, sym->linkage_name (),
			 (char *) NULL));
          add_symbol_to_list (struct_sym, get_file_symbols ());
        }

      break;

    case 'T':
      /* Struct, union, or enum tag.  For GNU C++, this can be be followed
         by 't' which means we are typedef'ing it as well.  */
      synonym = *p == 't';

      if (synonym)
	p++;

      SYMBOL_TYPE (sym) = read_type (&p, objfile);
 
      /* For a nameless type, we don't want a create a symbol, thus we
         did not use `sym'.  Return without further processing.  */
      if (nameless)
	return NULL;

      SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF;
      SYMBOL_VALUE (sym) = valu;
      SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN;
      if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0)
	SYMBOL_TYPE (sym)->set_name
	  (obconcat (&objfile->objfile_obstack, sym->linkage_name (),
		     (char *) NULL));
      add_symbol_to_list (sym, get_file_symbols ());

      if (synonym)
	{
	  /* Clone the sym and then modify it.  */
	  struct symbol *typedef_sym = new (&objfile->objfile_obstack) symbol;

	  *typedef_sym = *sym;
	  SYMBOL_ACLASS_INDEX (typedef_sym) = LOC_TYPEDEF;
	  SYMBOL_VALUE (typedef_sym) = valu;
	  SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN;
	  if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0)
	    SYMBOL_TYPE (sym)->set_name
	      (obconcat (&objfile->objfile_obstack, sym->linkage_name (),
			 (char *) NULL));
	  add_symbol_to_list (typedef_sym, get_file_symbols ());
	}
      break;

    case 'V':
      /* Static symbol of local scope.  */
      SYMBOL_TYPE (sym) = read_type (&p, objfile);
      SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC;
      SET_SYMBOL_VALUE_ADDRESS (sym, valu);
      if (gdbarch_static_transform_name_p (gdbarch)
	  && gdbarch_static_transform_name (gdbarch, sym->linkage_name ())
	     != sym->linkage_name ())
	{
	  struct bound_minimal_symbol msym;

	  msym = lookup_minimal_symbol (sym->linkage_name (), NULL, objfile);
	  if (msym.minsym != NULL)
	    {
	      const char *new_name = gdbarch_static_transform_name
		(gdbarch, sym->linkage_name ());

	      sym->set_linkage_name (new_name);
	      SET_SYMBOL_VALUE_ADDRESS (sym, BMSYMBOL_VALUE_ADDRESS (msym));
	    }
	}
      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
	add_symbol_to_list (sym, get_local_symbols ());
      break;

    case 'v':
      /* Reference parameter */
      SYMBOL_TYPE (sym) = read_type (&p, objfile);
      SYMBOL_ACLASS_INDEX (sym) = LOC_REF_ARG;
      SYMBOL_IS_ARGUMENT (sym) = 1;
      SYMBOL_VALUE (sym) = valu;
      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
      add_symbol_to_list (sym, get_local_symbols ());
      break;

    case 'a':
      /* Reference parameter which is in a register.  */
      SYMBOL_TYPE (sym) = read_type (&p, objfile);
      SYMBOL_ACLASS_INDEX (sym) = stab_regparm_index;
      SYMBOL_IS_ARGUMENT (sym) = 1;
      SYMBOL_VALUE (sym) = valu;
      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
      add_symbol_to_list (sym, get_local_symbols ());
      break;

    case 'X':
      /* This is used by Sun FORTRAN for "function result value".
         Sun claims ("dbx and dbxtool interfaces", 2nd ed)
         that Pascal uses it too, but when I tried it Pascal used
         "x:3" (local symbol) instead.  */
      SYMBOL_TYPE (sym) = read_type (&p, objfile);
      SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL;
      SYMBOL_VALUE (sym) = valu;
      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
      add_symbol_to_list (sym, get_local_symbols ());
      break;

    default:
      SYMBOL_TYPE (sym) = error_type (&p, objfile);
      SYMBOL_ACLASS_INDEX (sym) = LOC_CONST;
      SYMBOL_VALUE (sym) = 0;
      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
      add_symbol_to_list (sym, get_file_symbols ());
      break;
    }

  /* Some systems pass variables of certain types by reference instead
     of by value, i.e. they will pass the address of a structure (in a
     register or on the stack) instead of the structure itself.  */

  if (gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym))
      && SYMBOL_IS_ARGUMENT (sym))
    {
      /* We have to convert LOC_REGISTER to LOC_REGPARM_ADDR (for
         variables passed in a register).  */
      if (SYMBOL_CLASS (sym) == LOC_REGISTER)
	SYMBOL_ACLASS_INDEX (sym) = LOC_REGPARM_ADDR;
      /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th
	 and subsequent arguments on SPARC, for example).  */
      else if (SYMBOL_CLASS (sym) == LOC_ARG)
	SYMBOL_ACLASS_INDEX (sym) = LOC_REF_ARG;
    }

  return sym;
}

/* Skip rest of this symbol and return an error type.

   General notes on error recovery:  error_type always skips to the
   end of the symbol (modulo cretinous dbx symbol name continuation).
   Thus code like this:

   if (*(*pp)++ != ';')
   return error_type (pp, objfile);

   is wrong because if *pp starts out pointing at '\0' (typically as the
   result of an earlier error), it will be incremented to point to the
   start of the next symbol, which might produce strange results, at least
   if you run off the end of the string table.  Instead use

   if (**pp != ';')
   return error_type (pp, objfile);
   ++*pp;

   or

   if (**pp != ';')
   foo = error_type (pp, objfile);
   else
   ++*pp;

   And in case it isn't obvious, the point of all this hair is so the compiler
   can define new types and new syntaxes, and old versions of the
   debugger will be able to read the new symbol tables.  */

static struct type *
error_type (const char **pp, struct objfile *objfile)
{
  complaint (_("couldn't parse type; debugger out of date?"));
  while (1)
    {
      /* Skip to end of symbol.  */
      while (**pp != '\0')
	{
	  (*pp)++;
	}

      /* Check for and handle cretinous dbx symbol name continuation!  */
      if ((*pp)[-1] == '\\' || (*pp)[-1] == '?')
	{
	  *pp = next_symbol_text (objfile);
	}
      else
	{
	  break;
	}
    }
  return objfile_type (objfile)->builtin_error;
}


/* Read type information or a type definition; return the type.  Even
   though this routine accepts either type information or a type
   definition, the distinction is relevant--some parts of stabsread.c
   assume that type information starts with a digit, '-', or '(' in
   deciding whether to call read_type.  */

static struct type *
read_type (const char **pp, struct objfile *objfile)
{
  struct type *type = 0;
  struct type *type1;
  int typenums[2];
  char type_descriptor;

  /* Size in bits of type if specified by a type attribute, or -1 if
     there is no size attribute.  */
  int type_size = -1;

  /* Used to distinguish string and bitstring from char-array and set.  */
  int is_string = 0;

  /* Used to distinguish vector from array.  */
  int is_vector = 0;

  /* Read type number if present.  The type number may be omitted.
     for instance in a two-dimensional array declared with type
     "ar1;1;10;ar1;1;10;4".  */
  if ((**pp >= '0' && **pp <= '9')
      || **pp == '('
      || **pp == '-')
    {
      if (read_type_number (pp, typenums) != 0)
	return error_type (pp, objfile);

      if (**pp != '=')
        {
          /* Type is not being defined here.  Either it already
             exists, or this is a forward reference to it.
             dbx_alloc_type handles both cases.  */
          type = dbx_alloc_type (typenums, objfile);

          /* If this is a forward reference, arrange to complain if it
             doesn't get patched up by the time we're done
             reading.  */
          if (type->code () == TYPE_CODE_UNDEF)
            add_undefined_type (type, typenums);

          return type;
        }

      /* Type is being defined here.  */
      /* Skip the '='.
         Also skip the type descriptor - we get it below with (*pp)[-1].  */
      (*pp) += 2;
    }
  else
    {
      /* 'typenums=' not present, type is anonymous.  Read and return
         the definition, but don't put it in the type vector.  */
      typenums[0] = typenums[1] = -1;
      (*pp)++;
    }

again:
  type_descriptor = (*pp)[-1];
  switch (type_descriptor)
    {
    case 'x':
      {
	enum type_code code;

	/* Used to index through file_symbols.  */
	struct pending *ppt;
	int i;

	/* Name including "struct", etc.  */
	char *type_name;

	{
	  const char *from, *p, *q1, *q2;

	  /* Set the type code according to the following letter.  */
	  switch ((*pp)[0])
	    {
	    case 's':
	      code = TYPE_CODE_STRUCT;
	      break;
	    case 'u':
	      code = TYPE_CODE_UNION;
	      break;
	    case 'e':
	      code = TYPE_CODE_ENUM;
	      break;
	    default:
	      {
		/* Complain and keep going, so compilers can invent new
		   cross-reference types.  */
		complaint (_("Unrecognized cross-reference type `%c'"),
			   (*pp)[0]);
		code = TYPE_CODE_STRUCT;
		break;
	      }
	    }

	  q1 = strchr (*pp, '<');
	  p = strchr (*pp, ':');
	  if (p == NULL)
	    return error_type (pp, objfile);
	  if (q1 && p > q1 && p[1] == ':')
	    {
	      int nesting_level = 0;

	      for (q2 = q1; *q2; q2++)
		{
		  if (*q2 == '<')
		    nesting_level++;
		  else if (*q2 == '>')
		    nesting_level--;
		  else if (*q2 == ':' && nesting_level == 0)
		    break;
		}
	      p = q2;
	      if (*p != ':')
		return error_type (pp, objfile);
	    }
	  type_name = NULL;
	  if (get_current_subfile ()->language == language_cplus)
	    {
	      char *name = (char *) alloca (p - *pp + 1);

	      memcpy (name, *pp, p - *pp);
	      name[p - *pp] = '\0';

	      gdb::unique_xmalloc_ptr<char> new_name = cp_canonicalize_string (name);
	      if (new_name != nullptr)
		type_name = obstack_strdup (&objfile->objfile_obstack,
					    new_name.get ());
	    }
	  if (type_name == NULL)
	    {
	      char *to = type_name = (char *)
		obstack_alloc (&objfile->objfile_obstack, p - *pp + 1);

	      /* Copy the name.  */
	      from = *pp + 1;
	      while (from < p)
		*to++ = *from++;
	      *to = '\0';
	    }

	  /* Set the pointer ahead of the name which we just read, and
	     the colon.  */
	  *pp = p + 1;
	}

        /* If this type has already been declared, then reuse the same
           type, rather than allocating a new one.  This saves some
           memory.  */

	for (ppt = *get_file_symbols (); ppt; ppt = ppt->next)
	  for (i = 0; i < ppt->nsyms; i++)
	    {
	      struct symbol *sym = ppt->symbol[i];

	      if (SYMBOL_CLASS (sym) == LOC_TYPEDEF
		  && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN
		  && (SYMBOL_TYPE (sym)->code () == code)
		  && strcmp (sym->linkage_name (), type_name) == 0)
		{
		  obstack_free (&objfile->objfile_obstack, type_name);
		  type = SYMBOL_TYPE (sym);
	          if (typenums[0] != -1)
	            *dbx_lookup_type (typenums, objfile) = type;
		  return type;
		}
	    }

	/* Didn't find the type to which this refers, so we must
	   be dealing with a forward reference.  Allocate a type
	   structure for it, and keep track of it so we can
	   fill in the rest of the fields when we get the full
	   type.  */
	type = dbx_alloc_type (typenums, objfile);
	type->set_code (code);
	type->set_name (type_name);
	INIT_CPLUS_SPECIFIC (type);
	TYPE_STUB (type) = 1;

	add_undefined_type (type, typenums);
	return type;
      }

    case '-':			/* RS/6000 built-in type */
    case '0':
    case '1':
    case '2':
    case '3':
    case '4':
    case '5':
    case '6':
    case '7':
    case '8':
    case '9':
    case '(':
      (*pp)--;

      /* We deal with something like t(1,2)=(3,4)=... which
         the Lucid compiler and recent gcc versions (post 2.7.3) use.  */

      /* Allocate and enter the typedef type first.
         This handles recursive types.  */
      type = dbx_alloc_type (typenums, objfile);
      type->set_code (TYPE_CODE_TYPEDEF);
      {
	struct type *xtype = read_type (pp, objfile);

	if (type == xtype)
	  {
	    /* It's being defined as itself.  That means it is "void".  */
	    type->set_code (TYPE_CODE_VOID);
	    TYPE_LENGTH (type) = 1;
	  }
	else if (type_size >= 0 || is_string)
	  {
	    /* This is the absolute wrong way to construct types.  Every
	       other debug format has found a way around this problem and
	       the related problems with unnecessarily stubbed types;
	       someone motivated should attempt to clean up the issue
	       here as well.  Once a type pointed to has been created it
	       should not be modified.

               Well, it's not *absolutely* wrong.  Constructing recursive
               types (trees, linked lists) necessarily entails modifying
               types after creating them.  Constructing any loop structure
               entails side effects.  The Dwarf 2 reader does handle this
               more gracefully (it never constructs more than once
               instance of a type object, so it doesn't have to copy type
               objects wholesale), but it still mutates type objects after
               other folks have references to them.

               Keep in mind that this circularity/mutation issue shows up
               at the source language level, too: C's "incomplete types",
               for example.  So the proper cleanup, I think, would be to
               limit GDB's type smashing to match exactly those required
               by the source language.  So GDB could have a
               "complete_this_type" function, but never create unnecessary
               copies of a type otherwise.  */
	    replace_type (type, xtype);
	    type->set_name (NULL);
	  }
	else
	  {
	    TYPE_TARGET_STUB (type) = 1;
	    TYPE_TARGET_TYPE (type) = xtype;
	  }
      }
      break;

      /* In the following types, we must be sure to overwrite any existing
         type that the typenums refer to, rather than allocating a new one
         and making the typenums point to the new one.  This is because there
         may already be pointers to the existing type (if it had been
         forward-referenced), and we must change it to a pointer, function,
         reference, or whatever, *in-place*.  */

    case '*':			/* Pointer to another type */
      type1 = read_type (pp, objfile);
      type = make_pointer_type (type1, dbx_lookup_type (typenums, objfile));
      break;

    case '&':			/* Reference to another type */
      type1 = read_type (pp, objfile);
      type = make_reference_type (type1, dbx_lookup_type (typenums, objfile),
                                  TYPE_CODE_REF);
      break;

    case 'f':			/* Function returning another type */
      type1 = read_type (pp, objfile);
      type = make_function_type (type1, dbx_lookup_type (typenums, objfile));
      break;

    case 'g':                   /* Prototyped function.  (Sun)  */
      {
        /* Unresolved questions:

           - According to Sun's ``STABS Interface Manual'', for 'f'
           and 'F' symbol descriptors, a `0' in the argument type list
           indicates a varargs function.  But it doesn't say how 'g'
           type descriptors represent that info.  Someone with access
           to Sun's toolchain should try it out.

           - According to the comment in define_symbol (search for
           `process_prototype_types:'), Sun emits integer arguments as
           types which ref themselves --- like `void' types.  Do we
           have to deal with that here, too?  Again, someone with
           access to Sun's toolchain should try it out and let us
           know.  */

        const char *type_start = (*pp) - 1;
        struct type *return_type = read_type (pp, objfile);
        struct type *func_type
          = make_function_type (return_type,
				dbx_lookup_type (typenums, objfile));
        struct type_list {
          struct type *type;
          struct type_list *next;
        } *arg_types = 0;
        int num_args = 0;

        while (**pp && **pp != '#')
          {
            struct type *arg_type = read_type (pp, objfile);
            struct type_list *newobj = XALLOCA (struct type_list);
            newobj->type = arg_type;
            newobj->next = arg_types;
            arg_types = newobj;
            num_args++;
          }
        if (**pp == '#')
          ++*pp;
        else
          {
	    complaint (_("Prototyped function type didn't "
			 "end arguments with `#':\n%s"),
		       type_start);
          }

        /* If there is just one argument whose type is `void', then
           that's just an empty argument list.  */
        if (arg_types
            && ! arg_types->next
            && arg_types->type->code () == TYPE_CODE_VOID)
          num_args = 0;

        TYPE_FIELDS (func_type)
          = (struct field *) TYPE_ALLOC (func_type,
                                         num_args * sizeof (struct field));
        memset (TYPE_FIELDS (func_type), 0, num_args * sizeof (struct field));
        {
          int i;
          struct type_list *t;

          /* We stuck each argument type onto the front of the list
             when we read it, so the list is reversed.  Build the
             fields array right-to-left.  */
          for (t = arg_types, i = num_args - 1; t; t = t->next, i--)
            TYPE_FIELD_TYPE (func_type, i) = t->type;
        }
        TYPE_NFIELDS (func_type) = num_args;
        TYPE_PROTOTYPED (func_type) = 1;

        type = func_type;
        break;
      }

    case 'k':			/* Const qualifier on some type (Sun) */
      type = read_type (pp, objfile);
      type = make_cv_type (1, TYPE_VOLATILE (type), type,
			   dbx_lookup_type (typenums, objfile));
      break;

    case 'B':			/* Volatile qual on some type (Sun) */
      type = read_type (pp, objfile);
      type = make_cv_type (TYPE_CONST (type), 1, type,
			   dbx_lookup_type (typenums, objfile));
      break;

    case '@':
      if (isdigit (**pp) || **pp == '(' || **pp == '-')
	{			/* Member (class & variable) type */
	  /* FIXME -- we should be doing smash_to_XXX types here.  */

	  struct type *domain = read_type (pp, objfile);
	  struct type *memtype;

	  if (**pp != ',')
	    /* Invalid member type data format.  */
	    return error_type (pp, objfile);
	  ++*pp;

	  memtype = read_type (pp, objfile);
	  type = dbx_alloc_type (typenums, objfile);
	  smash_to_memberptr_type (type, domain, memtype);
	}
      else
	/* type attribute */
	{
	  const char *attr = *pp;

	  /* Skip to the semicolon.  */
	  while (**pp != ';' && **pp != '\0')
	    ++(*pp);
	  if (**pp == '\0')
	    return error_type (pp, objfile);
	  else
	    ++ * pp;		/* Skip the semicolon.  */

	  switch (*attr)
	    {
	    case 's':		/* Size attribute */
	      type_size = atoi (attr + 1);
	      if (type_size <= 0)
		type_size = -1;
	      break;

	    case 'S':		/* String attribute */
	      /* FIXME: check to see if following type is array?  */
	      is_string = 1;
	      break;

	    case 'V':		/* Vector attribute */
	      /* FIXME: check to see if following type is array?  */
	      is_vector = 1;
	      break;

	    default:
	      /* Ignore unrecognized type attributes, so future compilers
	         can invent new ones.  */
	      break;
	    }
	  ++*pp;
	  goto again;
	}
      break;

    case '#':			/* Method (class & fn) type */
      if ((*pp)[0] == '#')
	{
	  /* We'll get the parameter types from the name.  */
	  struct type *return_type;

	  (*pp)++;
	  return_type = read_type (pp, objfile);
	  if (*(*pp)++ != ';')
	    complaint (_("invalid (minimal) member type "
			 "data format at symtab pos %d."),
		       symnum);
	  type = allocate_stub_method (return_type);
	  if (typenums[0] != -1)
	    *dbx_lookup_type (typenums, objfile) = type;
	}
      else
	{
	  struct type *domain = read_type (pp, objfile);
	  struct type *return_type;
	  struct field *args;
	  int nargs, varargs;

	  if (**pp != ',')
	    /* Invalid member type data format.  */
	    return error_type (pp, objfile);
	  else
	    ++(*pp);

	  return_type = read_type (pp, objfile);
	  args = read_args (pp, ';', objfile, &nargs, &varargs);
	  if (args == NULL)
	    return error_type (pp, objfile);
	  type = dbx_alloc_type (typenums, objfile);
	  smash_to_method_type (type, domain, return_type, args,
				nargs, varargs);
	}
      break;

    case 'r':			/* Range type */
      type = read_range_type (pp, typenums, type_size, objfile);
      if (typenums[0] != -1)
	*dbx_lookup_type (typenums, objfile) = type;
      break;

    case 'b':
	{
	  /* Sun ACC builtin int type */
	  type = read_sun_builtin_type (pp, typenums, objfile);
	  if (typenums[0] != -1)
	    *dbx_lookup_type (typenums, objfile) = type;
	}
      break;

    case 'R':			/* Sun ACC builtin float type */
      type = read_sun_floating_type (pp, typenums, objfile);
      if (typenums[0] != -1)
	*dbx_lookup_type (typenums, objfile) = type;
      break;

    case 'e':			/* Enumeration type */
      type = dbx_alloc_type (typenums, objfile);
      type = read_enum_type (pp, type, objfile);
      if (typenums[0] != -1)
	*dbx_lookup_type (typenums, objfile) = type;
      break;

    case 's':			/* Struct type */
    case 'u':			/* Union type */
      {
        enum type_code type_code = TYPE_CODE_UNDEF;
        type = dbx_alloc_type (typenums, objfile);
        switch (type_descriptor)
          {
          case 's':
            type_code = TYPE_CODE_STRUCT;
            break;
          case 'u':
            type_code = TYPE_CODE_UNION;
            break;
          }
        type = read_struct_type (pp, type, type_code, objfile);
        break;
      }

    case 'a':			/* Array type */
      if (**pp != 'r')
	return error_type (pp, objfile);
      ++*pp;

      type = dbx_alloc_type (typenums, objfile);
      type = read_array_type (pp, type, objfile);
      if (is_string)
	type->set_code (TYPE_CODE_STRING);
      if (is_vector)
	make_vector_type (type);
      break;

    case 'S':			/* Set type */
      type1 = read_type (pp, objfile);
      type = create_set_type (NULL, type1);
      if (typenums[0] != -1)
	*dbx_lookup_type (typenums, objfile) = type;
      break;

    default:
      --*pp;			/* Go back to the symbol in error.  */
      /* Particularly important if it was \0!  */
      return error_type (pp, objfile);
    }

  if (type == 0)
    {
      warning (_("GDB internal error, type is NULL in stabsread.c."));
      return error_type (pp, objfile);
    }

  /* Size specified in a type attribute overrides any other size.  */
  if (type_size != -1)
    TYPE_LENGTH (type) = (type_size + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;

  return type;
}

/* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
   Return the proper type node for a given builtin type number.  */

static const struct objfile_key<struct type *,
				gdb::noop_deleter<struct type *>>
  rs6000_builtin_type_data;

static struct type *
rs6000_builtin_type (int typenum, struct objfile *objfile)
{
  struct type **negative_types = rs6000_builtin_type_data.get (objfile);

  /* We recognize types numbered from -NUMBER_RECOGNIZED to -1.  */
#define NUMBER_RECOGNIZED 34
  struct type *rettype = NULL;

  if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED)
    {
      complaint (_("Unknown builtin type %d"), typenum);
      return objfile_type (objfile)->builtin_error;
    }

  if (!negative_types)
    {
      /* This includes an empty slot for type number -0.  */
      negative_types = OBSTACK_CALLOC (&objfile->objfile_obstack,
				       NUMBER_RECOGNIZED + 1, struct type *);
      rs6000_builtin_type_data.set (objfile, negative_types);
    }

  if (negative_types[-typenum] != NULL)
    return negative_types[-typenum];

#if TARGET_CHAR_BIT != 8
#error This code wrong for TARGET_CHAR_BIT not 8
  /* These definitions all assume that TARGET_CHAR_BIT is 8.  I think
     that if that ever becomes not true, the correct fix will be to
     make the size in the struct type to be in bits, not in units of
     TARGET_CHAR_BIT.  */
#endif

  switch (-typenum)
    {
    case 1:
      /* The size of this and all the other types are fixed, defined
         by the debugging format.  If there is a type called "int" which
         is other than 32 bits, then it should use a new negative type
         number (or avoid negative type numbers for that case).
         See stabs.texinfo.  */
      rettype = init_integer_type (objfile, 32, 0, "int");
      break;
    case 2:
      rettype = init_integer_type (objfile, 8, 0, "char");
      TYPE_NOSIGN (rettype) = 1;
      break;
    case 3:
      rettype = init_integer_type (objfile, 16, 0, "short");
      break;
    case 4:
      rettype = init_integer_type (objfile, 32, 0, "long");
      break;
    case 5:
      rettype = init_integer_type (objfile, 8, 1, "unsigned char");
      break;
    case 6:
      rettype = init_integer_type (objfile, 8, 0, "signed char");
      break;
    case 7:
      rettype = init_integer_type (objfile, 16, 1, "unsigned short");
      break;
    case 8:
      rettype = init_integer_type (objfile, 32, 1, "unsigned int");
      break;
    case 9:
      rettype = init_integer_type (objfile, 32, 1, "unsigned");
      break;
    case 10:
      rettype = init_integer_type (objfile, 32, 1, "unsigned long");
      break;
    case 11:
      rettype = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
      break;
    case 12:
      /* IEEE single precision (32 bit).  */
      rettype = init_float_type (objfile, 32, "float",
				 floatformats_ieee_single);
      break;
    case 13:
      /* IEEE double precision (64 bit).  */
      rettype = init_float_type (objfile, 64, "double",
				 floatformats_ieee_double);
      break;
    case 14:
      /* This is an IEEE double on the RS/6000, and different machines with
         different sizes for "long double" should use different negative
         type numbers.  See stabs.texinfo.  */
      rettype = init_float_type (objfile, 64, "long double",
				 floatformats_ieee_double);
      break;
    case 15:
      rettype = init_integer_type (objfile, 32, 0, "integer");
      break;
    case 16:
      rettype = init_boolean_type (objfile, 32, 1, "boolean");
      break;
    case 17:
      rettype = init_float_type (objfile, 32, "short real",
				 floatformats_ieee_single);
      break;
    case 18:
      rettype = init_float_type (objfile, 64, "real",
				 floatformats_ieee_double);
      break;
    case 19:
      rettype = init_type (objfile, TYPE_CODE_ERROR, 0, "stringptr");
      break;
    case 20:
      rettype = init_character_type (objfile, 8, 1, "character");
      break;
    case 21:
      rettype = init_boolean_type (objfile, 8, 1, "logical*1");
      break;
    case 22:
      rettype = init_boolean_type (objfile, 16, 1, "logical*2");
      break;
    case 23:
      rettype = init_boolean_type (objfile, 32, 1, "logical*4");
      break;
    case 24:
      rettype = init_boolean_type (objfile, 32, 1, "logical");
      break;
    case 25:
      /* Complex type consisting of two IEEE single precision values.  */
      rettype = init_complex_type ("complex",
				   rs6000_builtin_type (12, objfile));
      break;
    case 26:
      /* Complex type consisting of two IEEE double precision values.  */
      rettype = init_complex_type ("double complex",
				   rs6000_builtin_type (13, objfile));
      break;
    case 27:
      rettype = init_integer_type (objfile, 8, 0, "integer*1");
      break;
    case 28:
      rettype = init_integer_type (objfile, 16, 0, "integer*2");
      break;
    case 29:
      rettype = init_integer_type (objfile, 32, 0, "integer*4");
      break;
    case 30:
      rettype = init_character_type (objfile, 16, 0, "wchar");
      break;
    case 31:
      rettype = init_integer_type (objfile, 64, 0, "long long");
      break;
    case 32:
      rettype = init_integer_type (objfile, 64, 1, "unsigned long long");
      break;
    case 33:
      rettype = init_integer_type (objfile, 64, 1, "logical*8");
      break;
    case 34:
      rettype = init_integer_type (objfile, 64, 0, "integer*8");
      break;
    }
  negative_types[-typenum] = rettype;
  return rettype;
}

/* This page contains subroutines of read_type.  */

/* Wrapper around method_name_from_physname to flag a complaint
   if there is an error.  */

static char *
stabs_method_name_from_physname (const char *physname)
{
  char *method_name;

  method_name = method_name_from_physname (physname);

  if (method_name == NULL)
    {
      complaint (_("Method has bad physname %s\n"), physname);
      return NULL;
    }

  return method_name;
}

/* Read member function stabs info for C++ classes.  The form of each member
   function data is:

   NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;

   An example with two member functions is:

   afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;

   For the case of overloaded operators, the format is op$::*.funcs, where
   $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
   name (such as `+=') and `.' marks the end of the operator name.

   Returns 1 for success, 0 for failure.  */

static int
read_member_functions (struct stab_field_info *fip, const char **pp,
		       struct type *type, struct objfile *objfile)
{
  int nfn_fields = 0;
  int length = 0;
  int i;
  struct next_fnfield
    {
      struct next_fnfield *next;
      struct fn_field fn_field;
    }
   *sublist;
  struct type *look_ahead_type;
  struct next_fnfieldlist *new_fnlist;
  struct next_fnfield *new_sublist;
  char *main_fn_name;
  const char *p;

  /* Process each list until we find something that is not a member function
     or find the end of the functions.  */

  while (**pp != ';')
    {
      /* We should be positioned at the start of the function name.
         Scan forward to find the first ':' and if it is not the
         first of a "::" delimiter, then this is not a member function.  */
      p = *pp;
      while (*p != ':')
	{
	  p++;
	}
      if (p[1] != ':')
	{
	  break;
	}

      sublist = NULL;
      look_ahead_type = NULL;
      length = 0;

      new_fnlist = OBSTACK_ZALLOC (&fip->obstack, struct next_fnfieldlist);

      if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2]))
	{
	  /* This is a completely wierd case.  In order to stuff in the
	     names that might contain colons (the usual name delimiter),
	     Mike Tiemann defined a different name format which is
	     signalled if the identifier is "op$".  In that case, the
	     format is "op$::XXXX." where XXXX is the name.  This is
	     used for names like "+" or "=".  YUUUUUUUK!  FIXME!  */
	  /* This lets the user type "break operator+".
	     We could just put in "+" as the name, but that wouldn't
	     work for "*".  */
	  static char opname[32] = "op$";
	  char *o = opname + 3;

	  /* Skip past '::'.  */
	  *pp = p + 2;

	  STABS_CONTINUE (pp, objfile);
	  p = *pp;
	  while (*p != '.')
	    {
	      *o++ = *p++;
	    }
	  main_fn_name = savestring (opname, o - opname);
	  /* Skip past '.'  */
	  *pp = p + 1;
	}
      else
	{
	  main_fn_name = savestring (*pp, p - *pp);
	  /* Skip past '::'.  */
	  *pp = p + 2;
	}
      new_fnlist->fn_fieldlist.name = main_fn_name;

      do
	{
	  new_sublist = OBSTACK_ZALLOC (&fip->obstack, struct next_fnfield);

	  /* Check for and handle cretinous dbx symbol name continuation!  */
	  if (look_ahead_type == NULL)
	    {
	      /* Normal case.  */
	      STABS_CONTINUE (pp, objfile);

	      new_sublist->fn_field.type = read_type (pp, objfile);
	      if (**pp != ':')
		{
		  /* Invalid symtab info for member function.  */
		  return 0;
		}
	    }
	  else
	    {
	      /* g++ version 1 kludge */
	      new_sublist->fn_field.type = look_ahead_type;
	      look_ahead_type = NULL;
	    }

	  (*pp)++;
	  p = *pp;
	  while (*p != ';')
	    {
	      p++;
	    }

	  /* These are methods, not functions.  */
	  if (new_sublist->fn_field.type->code () == TYPE_CODE_FUNC)
	    new_sublist->fn_field.type->set_code (TYPE_CODE_METHOD);
	  else
	    gdb_assert (new_sublist->fn_field.type->code ()
			== TYPE_CODE_METHOD);

	  /* If this is just a stub, then we don't have the real name here.  */
	  if (TYPE_STUB (new_sublist->fn_field.type))
	    {
	      if (!TYPE_SELF_TYPE (new_sublist->fn_field.type))
		set_type_self_type (new_sublist->fn_field.type, type);
	      new_sublist->fn_field.is_stub = 1;
	    }

	  new_sublist->fn_field.physname = savestring (*pp, p - *pp);
	  *pp = p + 1;

	  /* Set this member function's visibility fields.  */
	  switch (*(*pp)++)
	    {
	    case VISIBILITY_PRIVATE:
	      new_sublist->fn_field.is_private = 1;
	      break;
	    case VISIBILITY_PROTECTED:
	      new_sublist->fn_field.is_protected = 1;
	      break;
	    }

	  STABS_CONTINUE (pp, objfile);
	  switch (**pp)
	    {
	    case 'A':		/* Normal functions.  */
	      new_sublist->fn_field.is_const = 0;
	      new_sublist->fn_field.is_volatile = 0;
	      (*pp)++;
	      break;
	    case 'B':		/* `const' member functions.  */
	      new_sublist->fn_field.is_const = 1;
	      new_sublist->fn_field.is_volatile = 0;
	      (*pp)++;
	      break;
	    case 'C':		/* `volatile' member function.  */
	      new_sublist->fn_field.is_const = 0;
	      new_sublist->fn_field.is_volatile = 1;
	      (*pp)++;
	      break;
	    case 'D':		/* `const volatile' member function.  */
	      new_sublist->fn_field.is_const = 1;
	      new_sublist->fn_field.is_volatile = 1;
	      (*pp)++;
	      break;
	    case '*':		/* File compiled with g++ version 1 --
				   no info.  */
	    case '?':
	    case '.':
	      break;
	    default:
	      complaint (_("const/volatile indicator missing, got '%c'"),
			 **pp);
	      break;
	    }

	  switch (*(*pp)++)
	    {
	    case '*':
	      {
		int nbits;
		/* virtual member function, followed by index.
		   The sign bit is set to distinguish pointers-to-methods
		   from virtual function indicies.  Since the array is
		   in words, the quantity must be shifted left by 1
		   on 16 bit machine, and by 2 on 32 bit machine, forcing
		   the sign bit out, and usable as a valid index into
		   the array.  Remove the sign bit here.  */
		new_sublist->fn_field.voffset =
		  (0x7fffffff & read_huge_number (pp, ';', &nbits, 0)) + 2;
		if (nbits != 0)
		  return 0;

		STABS_CONTINUE (pp, objfile);
		if (**pp == ';' || **pp == '\0')
		  {
		    /* Must be g++ version 1.  */
		    new_sublist->fn_field.fcontext = 0;
		  }
		else
		  {
		    /* Figure out from whence this virtual function came.
		       It may belong to virtual function table of
		       one of its baseclasses.  */
		    look_ahead_type = read_type (pp, objfile);
		    if (**pp == ':')
		      {
			/* g++ version 1 overloaded methods.  */
		      }
		    else
		      {
			new_sublist->fn_field.fcontext = look_ahead_type;
			if (**pp != ';')
			  {
			    return 0;
			  }
			else
			  {
			    ++*pp;
			  }
			look_ahead_type = NULL;
		      }
		  }
		break;
	      }
	    case '?':
	      /* static member function.  */
	      {
		int slen = strlen (main_fn_name);

		new_sublist->fn_field.voffset = VOFFSET_STATIC;

		/* For static member functions, we can't tell if they
		   are stubbed, as they are put out as functions, and not as
		   methods.
		   GCC v2 emits the fully mangled name if
		   dbxout.c:flag_minimal_debug is not set, so we have to
		   detect a fully mangled physname here and set is_stub
		   accordingly.  Fully mangled physnames in v2 start with
		   the member function name, followed by two underscores.
		   GCC v3 currently always emits stubbed member functions,
		   but with fully mangled physnames, which start with _Z.  */
		if (!(strncmp (new_sublist->fn_field.physname,
			       main_fn_name, slen) == 0
		      && new_sublist->fn_field.physname[slen] == '_'
		      && new_sublist->fn_field.physname[slen + 1] == '_'))
		  {
		    new_sublist->fn_field.is_stub = 1;
		  }
		break;
	      }

	    default:
	      /* error */
	      complaint (_("member function type missing, got '%c'"),
			 (*pp)[-1]);
	      /* Normal member function.  */
	      /* Fall through.  */

	    case '.':
	      /* normal member function.  */
	      new_sublist->fn_field.voffset = 0;
	      new_sublist->fn_field.fcontext = 0;
	      break;
	    }

	  new_sublist->next = sublist;
	  sublist = new_sublist;
	  length++;
	  STABS_CONTINUE (pp, objfile);
	}
      while (**pp != ';' && **pp != '\0');

      (*pp)++;
      STABS_CONTINUE (pp, objfile);

      /* Skip GCC 3.X member functions which are duplicates of the callable
	 constructor/destructor.  */
      if (strcmp_iw (main_fn_name, "__base_ctor ") == 0
	  || strcmp_iw (main_fn_name, "__base_dtor ") == 0
	  || strcmp (main_fn_name, "__deleting_dtor") == 0)
	{
	  xfree (main_fn_name);
	}
      else
	{
	  int has_destructor = 0, has_other = 0;
	  int is_v3 = 0;
	  struct next_fnfield *tmp_sublist;

	  /* Various versions of GCC emit various mostly-useless
	     strings in the name field for special member functions.

	     For stub methods, we need to defer correcting the name
	     until we are ready to unstub the method, because the current
	     name string is used by gdb_mangle_name.  The only stub methods
	     of concern here are GNU v2 operators; other methods have their
	     names correct (see caveat below).

	     For non-stub methods, in GNU v3, we have a complete physname.
	     Therefore we can safely correct the name now.  This primarily
	     affects constructors and destructors, whose name will be
	     __comp_ctor or __comp_dtor instead of Foo or ~Foo.  Cast
	     operators will also have incorrect names; for instance,
	     "operator int" will be named "operator i" (i.e. the type is
	     mangled).

	     For non-stub methods in GNU v2, we have no easy way to
	     know if we have a complete physname or not.  For most
	     methods the result depends on the platform (if CPLUS_MARKER
	     can be `$' or `.', it will use minimal debug information, or
	     otherwise the full physname will be included).

	     Rather than dealing with this, we take a different approach.
	     For v3 mangled names, we can use the full physname; for v2,
	     we use cplus_demangle_opname (which is actually v2 specific),
	     because the only interesting names are all operators - once again
	     barring the caveat below.  Skip this process if any method in the
	     group is a stub, to prevent our fouling up the workings of
	     gdb_mangle_name.

	     The caveat: GCC 2.95.x (and earlier?) put constructors and
	     destructors in the same method group.  We need to split this
	     into two groups, because they should have different names.
	     So for each method group we check whether it contains both
	     routines whose physname appears to be a destructor (the physnames
	     for and destructors are always provided, due to quirks in v2
	     mangling) and routines whose physname does not appear to be a
	     destructor.  If so then we break up the list into two halves.
	     Even if the constructors and destructors aren't in the same group
	     the destructor will still lack the leading tilde, so that also
	     needs to be fixed.

	     So, to summarize what we expect and handle here:

	        Given         Given          Real         Real       Action
	     method name     physname      physname   method name

	     __opi            [none]     __opi__3Foo  operator int    opname
	                                                         [now or later]
	     Foo              _._3Foo       _._3Foo      ~Foo      separate and
	                                                               rename
	     operator i     _ZN3FoocviEv _ZN3FoocviEv operator int    demangle
	     __comp_ctor  _ZN3FooC1ERKS_ _ZN3FooC1ERKS_   Foo         demangle
	  */

	  tmp_sublist = sublist;
	  while (tmp_sublist != NULL)
	    {
	      if (tmp_sublist->fn_field.physname[0] == '_'
		  && tmp_sublist->fn_field.physname[1] == 'Z')
		is_v3 = 1;

	      if (is_destructor_name (tmp_sublist->fn_field.physname))
		has_destructor++;
	      else
		has_other++;

	      tmp_sublist = tmp_sublist->next;
	    }

	  if (has_destructor && has_other)
	    {
	      struct next_fnfieldlist *destr_fnlist;
	      struct next_fnfield *last_sublist;

	      /* Create a new fn_fieldlist for the destructors.  */

	      destr_fnlist = OBSTACK_ZALLOC (&fip->obstack,
					     struct next_fnfieldlist);

	      destr_fnlist->fn_fieldlist.name
		= obconcat (&objfile->objfile_obstack, "~",
			    new_fnlist->fn_fieldlist.name, (char *) NULL);

	      destr_fnlist->fn_fieldlist.fn_fields =
		XOBNEWVEC (&objfile->objfile_obstack,
			   struct fn_field, has_destructor);
	      memset (destr_fnlist->fn_fieldlist.fn_fields, 0,
		  sizeof (struct fn_field) * has_destructor);
	      tmp_sublist = sublist;
	      last_sublist = NULL;
	      i = 0;
	      while (tmp_sublist != NULL)
		{
		  if (!is_destructor_name (tmp_sublist->fn_field.physname))
		    {
		      tmp_sublist = tmp_sublist->next;
		      continue;
		    }
		  
		  destr_fnlist->fn_fieldlist.fn_fields[i++]
		    = tmp_sublist->fn_field;
		  if (last_sublist)
		    last_sublist->next = tmp_sublist->next;
		  else
		    sublist = tmp_sublist->next;
		  last_sublist = tmp_sublist;
		  tmp_sublist = tmp_sublist->next;
		}

	      destr_fnlist->fn_fieldlist.length = has_destructor;
	      destr_fnlist->next = fip->fnlist;
	      fip->fnlist = destr_fnlist;
	      nfn_fields++;
	      length -= has_destructor;
	    }
	  else if (is_v3)
	    {
	      /* v3 mangling prevents the use of abbreviated physnames,
		 so we can do this here.  There are stubbed methods in v3
		 only:
		 - in -gstabs instead of -gstabs+
		 - or for static methods, which are output as a function type
		   instead of a method type.  */
	      char *new_method_name =
		stabs_method_name_from_physname (sublist->fn_field.physname);

	      if (new_method_name != NULL
		  && strcmp (new_method_name,
			     new_fnlist->fn_fieldlist.name) != 0)
		{
		  new_fnlist->fn_fieldlist.name = new_method_name;
		  xfree (main_fn_name);
		}
	      else
		xfree (new_method_name);
	    }
	  else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~')
	    {
	      new_fnlist->fn_fieldlist.name =
		obconcat (&objfile->objfile_obstack,
			  "~", main_fn_name, (char *)NULL);
	      xfree (main_fn_name);
	    }

	  new_fnlist->fn_fieldlist.fn_fields
	    = OBSTACK_CALLOC (&objfile->objfile_obstack, length, fn_field);
	  for (i = length; (i--, sublist); sublist = sublist->next)
	    {
	      new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field;
	    }

	  new_fnlist->fn_fieldlist.length = length;
	  new_fnlist->next = fip->fnlist;
	  fip->fnlist = new_fnlist;
	  nfn_fields++;
	}
    }

  if (nfn_fields)
    {
      ALLOCATE_CPLUS_STRUCT_TYPE (type);
      TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
	TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields);
      memset (TYPE_FN_FIELDLISTS (type), 0,
	      sizeof (struct fn_fieldlist) * nfn_fields);
      TYPE_NFN_FIELDS (type) = nfn_fields;
    }

  return 1;
}

/* Special GNU C++ name.

   Returns 1 for success, 0 for failure.  "failure" means that we can't
   keep parsing and it's time for error_type().  */

static int
read_cpp_abbrev (struct stab_field_info *fip, const char **pp,
		 struct type *type, struct objfile *objfile)
{
  const char *p;
  const char *name;
  char cpp_abbrev;
  struct type *context;

  p = *pp;
  if (*++p == 'v')
    {
      name = NULL;
      cpp_abbrev = *++p;

      *pp = p + 1;

      /* At this point, *pp points to something like "22:23=*22...",
         where the type number before the ':' is the "context" and
         everything after is a regular type definition.  Lookup the
         type, find it's name, and construct the field name.  */

      context = read_type (pp, objfile);

      switch (cpp_abbrev)
	{
	case 'f':		/* $vf -- a virtual function table pointer */
	  name = TYPE_NAME (context);
	  if (name == NULL)
	    {
	      name = "";
	    }
	  fip->list->field.name = obconcat (&objfile->objfile_obstack,
					    vptr_name, name, (char *) NULL);
	  break;

	case 'b':		/* $vb -- a virtual bsomethingorother */
	  name = TYPE_NAME (context);
	  if (name == NULL)
	    {
	      complaint (_("C++ abbreviated type name "
			   "unknown at symtab pos %d"),
			 symnum);
	      name = "FOO";
	    }
	  fip->list->field.name = obconcat (&objfile->objfile_obstack, vb_name,
					    name, (char *) NULL);
	  break;

	default:
	  invalid_cpp_abbrev_complaint (*pp);
	  fip->list->field.name = obconcat (&objfile->objfile_obstack,
					    "INVALID_CPLUSPLUS_ABBREV",
					    (char *) NULL);
	  break;
	}

      /* At this point, *pp points to the ':'.  Skip it and read the
         field type.  */

      p = ++(*pp);
      if (p[-1] != ':')
	{
	  invalid_cpp_abbrev_complaint (*pp);
	  return 0;
	}
      fip->list->field.type = read_type (pp, objfile);
      if (**pp == ',')
	(*pp)++;		/* Skip the comma.  */
      else
	return 0;

      {
	int nbits;

	SET_FIELD_BITPOS (fip->list->field,
			  read_huge_number (pp, ';', &nbits, 0));
	if (nbits != 0)
	  return 0;
      }
      /* This field is unpacked.  */
      FIELD_BITSIZE (fip->list->field) = 0;
      fip->list->visibility = VISIBILITY_PRIVATE;
    }
  else
    {
      invalid_cpp_abbrev_complaint (*pp);
      /* We have no idea what syntax an unrecognized abbrev would have, so
         better return 0.  If we returned 1, we would need to at least advance
         *pp to avoid an infinite loop.  */
      return 0;
    }
  return 1;
}

static void
read_one_struct_field (struct stab_field_info *fip, const char **pp,
		       const char *p, struct type *type,
		       struct objfile *objfile)
{
  struct gdbarch *gdbarch = objfile->arch ();

  fip->list->field.name
    = obstack_strndup (&objfile->objfile_obstack, *pp, p - *pp);
  *pp = p + 1;

  /* This means we have a visibility for a field coming.  */
  if (**pp == '/')
    {
      (*pp)++;
      fip->list->visibility = *(*pp)++;
    }
  else
    {
      /* normal dbx-style format, no explicit visibility */
      fip->list->visibility = VISIBILITY_PUBLIC;
    }

  fip->list->field.type = read_type (pp, objfile);
  if (**pp == ':')
    {
      p = ++(*pp);
#if 0
      /* Possible future hook for nested types.  */
      if (**pp == '!')
	{
	  fip->list->field.bitpos = (long) -2;	/* nested type */
	  p = ++(*pp);
	}
      else
	...;
#endif
      while (*p != ';')
	{
	  p++;
	}
      /* Static class member.  */
      SET_FIELD_PHYSNAME (fip->list->field, savestring (*pp, p - *pp));
      *pp = p + 1;
      return;
    }
  else if (**pp != ',')
    {
      /* Bad structure-type format.  */
      stabs_general_complaint ("bad structure-type format");
      return;
    }

  (*pp)++;			/* Skip the comma.  */

  {
    int nbits;

    SET_FIELD_BITPOS (fip->list->field,
		      read_huge_number (pp, ',', &nbits, 0));
    if (nbits != 0)
      {
	stabs_general_complaint ("bad structure-type format");
	return;
      }
    FIELD_BITSIZE (fip->list->field) = read_huge_number (pp, ';', &nbits, 0);
    if (nbits != 0)
      {
	stabs_general_complaint ("bad structure-type format");
	return;
      }
  }

  if (FIELD_BITPOS (fip->list->field) == 0
      && FIELD_BITSIZE (fip->list->field) == 0)
    {
      /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
         it is a field which has been optimized out.  The correct stab for
         this case is to use VISIBILITY_IGNORE, but that is a recent
         invention.  (2) It is a 0-size array.  For example
         union { int num; char str[0]; } foo.  Printing _("<no value>" for
         str in "p foo" is OK, since foo.str (and thus foo.str[3])
         will continue to work, and a 0-size array as a whole doesn't
         have any contents to print.

         I suspect this probably could also happen with gcc -gstabs (not
         -gstabs+) for static fields, and perhaps other C++ extensions.
         Hopefully few people use -gstabs with gdb, since it is intended
         for dbx compatibility.  */

      /* Ignore this field.  */
      fip->list->visibility = VISIBILITY_IGNORE;
    }
  else
    {
      /* Detect an unpacked field and mark it as such.
         dbx gives a bit size for all fields.
         Note that forward refs cannot be packed,
         and treat enums as if they had the width of ints.  */

      struct type *field_type = check_typedef (FIELD_TYPE (fip->list->field));

      if (field_type->code () != TYPE_CODE_INT
	  && field_type->code () != TYPE_CODE_RANGE
	  && field_type->code () != TYPE_CODE_BOOL
	  && field_type->code () != TYPE_CODE_ENUM)
	{
	  FIELD_BITSIZE (fip->list->field) = 0;
	}
      if ((FIELD_BITSIZE (fip->list->field)
	   == TARGET_CHAR_BIT * TYPE_LENGTH (field_type)
	   || (field_type->code () == TYPE_CODE_ENUM
	       && FIELD_BITSIZE (fip->list->field)
		  == gdbarch_int_bit (gdbarch))
	  )
	  &&
	  FIELD_BITPOS (fip->list->field) % 8 == 0)
	{
	  FIELD_BITSIZE (fip->list->field) = 0;
	}
    }
}


/* Read struct or class data fields.  They have the form:

   NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;

   At the end, we see a semicolon instead of a field.

   In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
   a static field.

   The optional VISIBILITY is one of:

   '/0' (VISIBILITY_PRIVATE)
   '/1' (VISIBILITY_PROTECTED)
   '/2' (VISIBILITY_PUBLIC)
   '/9' (VISIBILITY_IGNORE)

   or nothing, for C style fields with public visibility.

   Returns 1 for success, 0 for failure.  */

static int
read_struct_fields (struct stab_field_info *fip, const char **pp,
		    struct type *type, struct objfile *objfile)
{
  const char *p;
  struct nextfield *newobj;

  /* We better set p right now, in case there are no fields at all...    */

  p = *pp;

  /* Read each data member type until we find the terminating ';' at the end of
     the data member list, or break for some other reason such as finding the
     start of the member function list.  */
  /* Stab string for structure/union does not end with two ';' in
     SUN C compiler 5.3 i.e. F6U2, hence check for end of string.  */

  while (**pp != ';' && **pp != '\0')
    {
      STABS_CONTINUE (pp, objfile);
      /* Get space to record the next field's data.  */
      newobj = OBSTACK_ZALLOC (&fip->obstack, struct nextfield);

      newobj->next = fip->list;
      fip->list = newobj;

      /* Get the field name.  */
      p = *pp;

      /* If is starts with CPLUS_MARKER it is a special abbreviation,
         unless the CPLUS_MARKER is followed by an underscore, in
         which case it is just the name of an anonymous type, which we
         should handle like any other type name.  */

      if (is_cplus_marker (p[0]) && p[1] != '_')
	{
	  if (!read_cpp_abbrev (fip, pp, type, objfile))
	    return 0;
	  continue;
	}

      /* Look for the ':' that separates the field name from the field
         values.  Data members are delimited by a single ':', while member
         functions are delimited by a pair of ':'s.  When we hit the member
         functions (if any), terminate scan loop and return.  */

      while (*p != ':' && *p != '\0')
	{
	  p++;
	}
      if (*p == '\0')
	return 0;

      /* Check to see if we have hit the member functions yet.  */
      if (p[1] == ':')
	{
	  break;
	}
      read_one_struct_field (fip, pp, p, type, objfile);
    }
  if (p[0] == ':' && p[1] == ':')
    {
      /* (the deleted) chill the list of fields: the last entry (at
         the head) is a partially constructed entry which we now
         scrub.  */
      fip->list = fip->list->next;
    }
  return 1;
}
/* *INDENT-OFF* */
/* The stabs for C++ derived classes contain baseclass information which
   is marked by a '!' character after the total size.  This function is
   called when we encounter the baseclass marker, and slurps up all the
   baseclass information.

   Immediately following the '!' marker is the number of base classes that
   the class is derived from, followed by information for each base class.
   For each base class, there are two visibility specifiers, a bit offset
   to the base class information within the derived class, a reference to
   the type for the base class, and a terminating semicolon.

   A typical example, with two base classes, would be "!2,020,19;0264,21;".
   						       ^^ ^ ^ ^  ^ ^  ^
	Baseclass information marker __________________|| | | |  | |  |
	Number of baseclasses __________________________| | | |  | |  |
	Visibility specifiers (2) ________________________| | |  | |  |
	Offset in bits from start of class _________________| |  | |  |
	Type number for base class ___________________________|  | |  |
	Visibility specifiers (2) _______________________________| |  |
	Offset in bits from start of class ________________________|  |
	Type number of base class ____________________________________|

  Return 1 for success, 0 for (error-type-inducing) failure.  */
/* *INDENT-ON* */



static int
read_baseclasses (struct stab_field_info *fip, const char **pp,
		  struct type *type, struct objfile *objfile)
{
  int i;
  struct nextfield *newobj;

  if (**pp != '!')
    {
      return 1;
    }
  else
    {
      /* Skip the '!' baseclass information marker.  */
      (*pp)++;
    }

  ALLOCATE_CPLUS_STRUCT_TYPE (type);
  {
    int nbits;

    TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits, 0);
    if (nbits != 0)
      return 0;
  }

#if 0
  /* Some stupid compilers have trouble with the following, so break
     it up into simpler expressions.  */
  TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *)
    TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type)));
#else
  {
    int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type));
    char *pointer;

    pointer = (char *) TYPE_ALLOC (type, num_bytes);
    TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer;
  }
#endif /* 0 */

  B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type));

  for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
    {
      newobj = OBSTACK_ZALLOC (&fip->obstack, struct nextfield);

      newobj->next = fip->list;
      fip->list = newobj;
      FIELD_BITSIZE (newobj->field) = 0;	/* This should be an unpacked
					   field!  */

      STABS_CONTINUE (pp, objfile);
      switch (**pp)
	{
	case '0':
	  /* Nothing to do.  */
	  break;
	case '1':
	  SET_TYPE_FIELD_VIRTUAL (type, i);
	  break;
	default:
	  /* Unknown character.  Complain and treat it as non-virtual.  */
	  {
	    complaint (_("Unknown virtual character `%c' for baseclass"),
		       **pp);
	  }
	}
      ++(*pp);

      newobj->visibility = *(*pp)++;
      switch (newobj->visibility)
	{
	case VISIBILITY_PRIVATE:
	case VISIBILITY_PROTECTED:
	case VISIBILITY_PUBLIC:
	  break;
	default:
	  /* Bad visibility format.  Complain and treat it as
	     public.  */
	  {
	    complaint (_("Unknown visibility `%c' for baseclass"),
		       newobj->visibility);
	    newobj->visibility = VISIBILITY_PUBLIC;
	  }
	}

      {
	int nbits;

	/* The remaining value is the bit offset of the portion of the object
	   corresponding to this baseclass.  Always zero in the absence of
	   multiple inheritance.  */

	SET_FIELD_BITPOS (newobj->field, read_huge_number (pp, ',', &nbits, 0));
	if (nbits != 0)
	  return 0;
      }

      /* The last piece of baseclass information is the type of the
         base class.  Read it, and remember it's type name as this
         field's name.  */

      newobj->field.type = read_type (pp, objfile);
      newobj->field.name = TYPE_NAME (newobj->field.type);

      /* Skip trailing ';' and bump count of number of fields seen.  */
      if (**pp == ';')
	(*pp)++;
      else
	return 0;
    }
  return 1;
}

/* The tail end of stabs for C++ classes that contain a virtual function
   pointer contains a tilde, a %, and a type number.
   The type number refers to the base class (possibly this class itself) which
   contains the vtable pointer for the current class.

   This function is called when we have parsed all the method declarations,
   so we can look for the vptr base class info.  */

static int
read_tilde_fields (struct stab_field_info *fip, const char **pp,
		   struct type *type, struct objfile *objfile)
{
  const char *p;

  STABS_CONTINUE (pp, objfile);

  /* If we are positioned at a ';', then skip it.  */
  if (**pp == ';')
    {
      (*pp)++;
    }

  if (**pp == '~')
    {
      (*pp)++;

      if (**pp == '=' || **pp == '+' || **pp == '-')
	{
	  /* Obsolete flags that used to indicate the presence
	     of constructors and/or destructors.  */
	  (*pp)++;
	}

      /* Read either a '%' or the final ';'.  */
      if (*(*pp)++ == '%')
	{
	  /* The next number is the type number of the base class
	     (possibly our own class) which supplies the vtable for
	     this class.  Parse it out, and search that class to find
	     its vtable pointer, and install those into TYPE_VPTR_BASETYPE
	     and TYPE_VPTR_FIELDNO.  */

	  struct type *t;
	  int i;

	  t = read_type (pp, objfile);
	  p = (*pp)++;
	  while (*p != '\0' && *p != ';')
	    {
	      p++;
	    }
	  if (*p == '\0')
	    {
	      /* Premature end of symbol.  */
	      return 0;
	    }

	  set_type_vptr_basetype (type, t);
	  if (type == t)	/* Our own class provides vtbl ptr.  */
	    {
	      for (i = TYPE_NFIELDS (t) - 1;
		   i >= TYPE_N_BASECLASSES (t);
		   --i)
		{
		  const char *name = TYPE_FIELD_NAME (t, i);

		  if (!strncmp (name, vptr_name, sizeof (vptr_name) - 2)
		      && is_cplus_marker (name[sizeof (vptr_name) - 2]))
		    {
		      set_type_vptr_fieldno (type, i);
		      goto gotit;
		    }
		}
	      /* Virtual function table field not found.  */
	      complaint (_("virtual function table pointer "
			   "not found when defining class `%s'"),
			 TYPE_NAME (type));
	      return 0;
	    }
	  else
	    {
	      set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t));
	    }

	gotit:
	  *pp = p + 1;
	}
    }
  return 1;
}

static int
attach_fn_fields_to_type (struct stab_field_info *fip, struct type *type)
{
  int n;

  for (n = TYPE_NFN_FIELDS (type);
       fip->fnlist != NULL;
       fip->fnlist = fip->fnlist->next)
    {
      --n;			/* Circumvent Sun3 compiler bug.  */
      TYPE_FN_FIELDLISTS (type)[n] = fip->fnlist->fn_fieldlist;
    }
  return 1;
}

/* Create the vector of fields, and record how big it is.
   We need this info to record proper virtual function table information
   for this class's virtual functions.  */

static int
attach_fields_to_type (struct stab_field_info *fip, struct type *type,
		       struct objfile *objfile)
{
  int nfields = 0;
  int non_public_fields = 0;
  struct nextfield *scan;

  /* Count up the number of fields that we have, as well as taking note of
     whether or not there are any non-public fields, which requires us to
     allocate and build the private_field_bits and protected_field_bits
     bitfields.  */

  for (scan = fip->list; scan != NULL; scan = scan->next)
    {
      nfields++;
      if (scan->visibility != VISIBILITY_PUBLIC)
	{
	  non_public_fields++;
	}
    }

  /* Now we know how many fields there are, and whether or not there are any
     non-public fields.  Record the field count, allocate space for the
     array of fields, and create blank visibility bitfields if necessary.  */

  TYPE_NFIELDS (type) = nfields;
  TYPE_FIELDS (type) = (struct field *)
    TYPE_ALLOC (type, sizeof (struct field) * nfields);
  memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields);

  if (non_public_fields)
    {
      ALLOCATE_CPLUS_STRUCT_TYPE (type);

      TYPE_FIELD_PRIVATE_BITS (type) =
	(B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
      B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);

      TYPE_FIELD_PROTECTED_BITS (type) =
	(B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
      B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);

      TYPE_FIELD_IGNORE_BITS (type) =
	(B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
      B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields);
    }

  /* Copy the saved-up fields into the field vector.  Start from the
     head of the list, adding to the tail of the field array, so that
     they end up in the same order in the array in which they were
     added to the list.  */

  while (nfields-- > 0)
    {
      TYPE_FIELD (type, nfields) = fip->list->field;
      switch (fip->list->visibility)
	{
	case VISIBILITY_PRIVATE:
	  SET_TYPE_FIELD_PRIVATE (type, nfields);
	  break;

	case VISIBILITY_PROTECTED:
	  SET_TYPE_FIELD_PROTECTED (type, nfields);
	  break;

	case VISIBILITY_IGNORE:
	  SET_TYPE_FIELD_IGNORE (type, nfields);
	  break;

	case VISIBILITY_PUBLIC:
	  break;

	default:
	  /* Unknown visibility.  Complain and treat it as public.  */
	  {
	    complaint (_("Unknown visibility `%c' for field"),
		       fip->list->visibility);
	  }
	  break;
	}
      fip->list = fip->list->next;
    }
  return 1;
}


/* Complain that the compiler has emitted more than one definition for the
   structure type TYPE.  */
static void 
complain_about_struct_wipeout (struct type *type)
{
  const char *name = "";
  const char *kind = "";

  if (TYPE_NAME (type))
    {
      name = TYPE_NAME (type);
      switch (type->code ())
        {
        case TYPE_CODE_STRUCT: kind = "struct "; break;
        case TYPE_CODE_UNION:  kind = "union ";  break;
        case TYPE_CODE_ENUM:   kind = "enum ";   break;
        default: kind = "";
        }
    }
  else
    {
      name = "<unknown>";
      kind = "";
    }

  complaint (_("struct/union type gets multiply defined: %s%s"), kind, name);
}

/* Set the length for all variants of a same main_type, which are
   connected in the closed chain.
   
   This is something that needs to be done when a type is defined *after*
   some cross references to this type have already been read.  Consider
   for instance the following scenario where we have the following two
   stabs entries:

        .stabs  "t:p(0,21)=*(0,22)=k(0,23)=xsdummy:",160,0,28,-24
        .stabs  "dummy:T(0,23)=s16x:(0,1),0,3[...]"

   A stubbed version of type dummy is created while processing the first
   stabs entry.  The length of that type is initially set to zero, since
   it is unknown at this point.  Also, a "constant" variation of type
   "dummy" is created as well (this is the "(0,22)=k(0,23)" section of
   the stabs line).

   The second stabs entry allows us to replace the stubbed definition
   with the real definition.  However, we still need to adjust the length
   of the "constant" variation of that type, as its length was left
   untouched during the main type replacement...  */

static void
set_length_in_type_chain (struct type *type)
{
  struct type *ntype = TYPE_CHAIN (type);

  while (ntype != type)
    {
      if (TYPE_LENGTH(ntype) == 0)
	TYPE_LENGTH (ntype) = TYPE_LENGTH (type);
      else
        complain_about_struct_wipeout (ntype);
      ntype = TYPE_CHAIN (ntype);
    }
}

/* Read the description of a structure (or union type) and return an object
   describing the type.

   PP points to a character pointer that points to the next unconsumed token
   in the stabs string.  For example, given stabs "A:T4=s4a:1,0,32;;",
   *PP will point to "4a:1,0,32;;".

   TYPE points to an incomplete type that needs to be filled in.

   OBJFILE points to the current objfile from which the stabs information is
   being read.  (Note that it is redundant in that TYPE also contains a pointer
   to this same objfile, so it might be a good idea to eliminate it.  FIXME). 
 */

static struct type *
read_struct_type (const char **pp, struct type *type, enum type_code type_code,
                  struct objfile *objfile)
{
  struct stab_field_info fi;

  /* When describing struct/union/class types in stabs, G++ always drops
     all qualifications from the name.  So if you've got:
       struct A { ... struct B { ... }; ... };
     then G++ will emit stabs for `struct A::B' that call it simply
     `struct B'.  Obviously, if you've got a real top-level definition for
     `struct B', or other nested definitions, this is going to cause
     problems.

     Obviously, GDB can't fix this by itself, but it can at least avoid
     scribbling on existing structure type objects when new definitions
     appear.  */
  if (! (type->code () == TYPE_CODE_UNDEF
         || TYPE_STUB (type)))
    {
      complain_about_struct_wipeout (type);

      /* It's probably best to return the type unchanged.  */
      return type;
    }

  INIT_CPLUS_SPECIFIC (type);
  type->set_code (type_code);
  TYPE_STUB (type) = 0;

  /* First comes the total size in bytes.  */

  {
    int nbits;

    TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits, 0);
    if (nbits != 0)
      return error_type (pp, objfile);
    set_length_in_type_chain (type);
  }

  /* Now read the baseclasses, if any, read the regular C struct or C++
     class member fields, attach the fields to the type, read the C++
     member functions, attach them to the type, and then read any tilde
     field (baseclass specifier for the class holding the main vtable).  */

  if (!read_baseclasses (&fi, pp, type, objfile)
      || !read_struct_fields (&fi, pp, type, objfile)
      || !attach_fields_to_type (&fi, type, objfile)
      || !read_member_functions (&fi, pp, type, objfile)
      || !attach_fn_fields_to_type (&fi, type)
      || !read_tilde_fields (&fi, pp, type, objfile))
    {
      type = error_type (pp, objfile);
    }

  return (type);
}

/* Read a definition of an array type,
   and create and return a suitable type object.
   Also creates a range type which represents the bounds of that
   array.  */

static struct type *
read_array_type (const char **pp, struct type *type,
		 struct objfile *objfile)
{
  struct type *index_type, *element_type, *range_type;
  int lower, upper;
  int adjustable = 0;
  int nbits;

  /* Format of an array type:
     "ar<index type>;lower;upper;<array_contents_type>".
     OS9000: "arlower,upper;<array_contents_type>".

     Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
     for these, produce a type like float[][].  */

    {
      index_type = read_type (pp, objfile);
      if (**pp != ';')
	/* Improper format of array type decl.  */
	return error_type (pp, objfile);
      ++*pp;
    }

  if (!(**pp >= '0' && **pp <= '9') && **pp != '-')
    {
      (*pp)++;
      adjustable = 1;
    }
  lower = read_huge_number (pp, ';', &nbits, 0);

  if (nbits != 0)
    return error_type (pp, objfile);

  if (!(**pp >= '0' && **pp <= '9') && **pp != '-')
    {
      (*pp)++;
      adjustable = 1;
    }
  upper = read_huge_number (pp, ';', &nbits, 0);
  if (nbits != 0)
    return error_type (pp, objfile);

  element_type = read_type (pp, objfile);

  if (adjustable)
    {
      lower = 0;
      upper = -1;
    }

  range_type =
    create_static_range_type (NULL, index_type, lower, upper);
  type = create_array_type (type, element_type, range_type);

  return type;
}


/* Read a definition of an enumeration type,
   and create and return a suitable type object.
   Also defines the symbols that represent the values of the type.  */

static struct type *
read_enum_type (const char **pp, struct type *type,
		struct objfile *objfile)
{
  struct gdbarch *gdbarch = objfile->arch ();
  const char *p;
  char *name;
  long n;
  struct symbol *sym;
  int nsyms = 0;
  struct pending **symlist;
  struct pending *osyms, *syms;
  int o_nsyms;
  int nbits;
  int unsigned_enum = 1;

#if 0
  /* FIXME!  The stabs produced by Sun CC merrily define things that ought
     to be file-scope, between N_FN entries, using N_LSYM.  What's a mother
     to do?  For now, force all enum values to file scope.  */
  if (within_function)
    symlist = get_local_symbols ();
  else
#endif
    symlist = get_file_symbols ();
  osyms = *symlist;
  o_nsyms = osyms ? osyms->nsyms : 0;

  /* The aix4 compiler emits an extra field before the enum members;
     my guess is it's a type of some sort.  Just ignore it.  */
  if (**pp == '-')
    {
      /* Skip over the type.  */
      while (**pp != ':')
	(*pp)++;

      /* Skip over the colon.  */
      (*pp)++;
    }

  /* Read the value-names and their values.
     The input syntax is NAME:VALUE,NAME:VALUE, and so on.
     A semicolon or comma instead of a NAME means the end.  */
  while (**pp && **pp != ';' && **pp != ',')
    {
      STABS_CONTINUE (pp, objfile);
      p = *pp;
      while (*p != ':')
	p++;
      name = obstack_strndup (&objfile->objfile_obstack, *pp, p - *pp);
      *pp = p + 1;
      n = read_huge_number (pp, ',', &nbits, 0);
      if (nbits != 0)
	return error_type (pp, objfile);

      sym = new (&objfile->objfile_obstack) symbol;
      sym->set_linkage_name (name);
      sym->set_language (get_current_subfile ()->language,
			 &objfile->objfile_obstack);
      SYMBOL_ACLASS_INDEX (sym) = LOC_CONST;
      SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
      SYMBOL_VALUE (sym) = n;
      if (n < 0)
	unsigned_enum = 0;
      add_symbol_to_list (sym, symlist);
      nsyms++;
    }

  if (**pp == ';')
    (*pp)++;			/* Skip the semicolon.  */

  /* Now fill in the fields of the type-structure.  */

  TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT;
  set_length_in_type_chain (type);
  type->set_code (TYPE_CODE_ENUM);
  TYPE_STUB (type) = 0;
  if (unsigned_enum)
    TYPE_UNSIGNED (type) = 1;
  TYPE_NFIELDS (type) = nsyms;
  TYPE_FIELDS (type) = (struct field *)
    TYPE_ALLOC (type, sizeof (struct field) * nsyms);
  memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms);

  /* Find the symbols for the values and put them into the type.
     The symbols can be found in the symlist that we put them on
     to cause them to be defined.  osyms contains the old value
     of that symlist; everything up to there was defined by us.  */
  /* Note that we preserve the order of the enum constants, so
     that in something like "enum {FOO, LAST_THING=FOO}" we print
     FOO, not LAST_THING.  */

  for (syms = *symlist, n = nsyms - 1; syms; syms = syms->next)
    {
      int last = syms == osyms ? o_nsyms : 0;
      int j = syms->nsyms;

      for (; --j >= last; --n)
	{
	  struct symbol *xsym = syms->symbol[j];

	  SYMBOL_TYPE (xsym) = type;
	  TYPE_FIELD_NAME (type, n) = xsym->linkage_name ();
	  SET_FIELD_ENUMVAL (TYPE_FIELD (type, n), SYMBOL_VALUE (xsym));
	  TYPE_FIELD_BITSIZE (type, n) = 0;
	}
      if (syms == osyms)
	break;
    }

  return type;
}

/* Sun's ACC uses a somewhat saner method for specifying the builtin
   typedefs in every file (for int, long, etc):

   type = b <signed> <width> <format type>; <offset>; <nbits>
   signed = u or s.
   optional format type = c or b for char or boolean.
   offset = offset from high order bit to start bit of type.
   width is # bytes in object of this type, nbits is # bits in type.

   The width/offset stuff appears to be for small objects stored in
   larger ones (e.g. `shorts' in `int' registers).  We ignore it for now,
   FIXME.  */

static struct type *
read_sun_builtin_type (const char **pp, int typenums[2], struct objfile *objfile)
{
  int type_bits;
  int nbits;
  int unsigned_type;
  int boolean_type = 0;

  switch (**pp)
    {
    case 's':
      unsigned_type = 0;
      break;
    case 'u':
      unsigned_type = 1;
      break;
    default:
      return error_type (pp, objfile);
    }
  (*pp)++;

  /* For some odd reason, all forms of char put a c here.  This is strange
     because no other type has this honor.  We can safely ignore this because
     we actually determine 'char'acterness by the number of bits specified in
     the descriptor.
     Boolean forms, e.g Fortran logical*X, put a b here.  */

  if (**pp == 'c')
    (*pp)++;
  else if (**pp == 'b')
    {
      boolean_type = 1;
      (*pp)++;
    }

  /* The first number appears to be the number of bytes occupied
     by this type, except that unsigned short is 4 instead of 2.
     Since this information is redundant with the third number,
     we will ignore it.  */
  read_huge_number (pp, ';', &nbits, 0);
  if (nbits != 0)
    return error_type (pp, objfile);

  /* The second number is always 0, so ignore it too.  */
  read_huge_number (pp, ';', &nbits, 0);
  if (nbits != 0)
    return error_type (pp, objfile);

  /* The third number is the number of bits for this type.  */
  type_bits = read_huge_number (pp, 0, &nbits, 0);
  if (nbits != 0)
    return error_type (pp, objfile);
  /* The type *should* end with a semicolon.  If it are embedded
     in a larger type the semicolon may be the only way to know where
     the type ends.  If this type is at the end of the stabstring we
     can deal with the omitted semicolon (but we don't have to like
     it).  Don't bother to complain(), Sun's compiler omits the semicolon
     for "void".  */
  if (**pp == ';')
    ++(*pp);

  if (type_bits == 0)
    {
      struct type *type = init_type (objfile, TYPE_CODE_VOID,
				     TARGET_CHAR_BIT, NULL);
      if (unsigned_type)
        TYPE_UNSIGNED (type) = 1;
      return type;
    }

  if (boolean_type)
    return init_boolean_type (objfile, type_bits, unsigned_type, NULL);
  else
    return init_integer_type (objfile, type_bits, unsigned_type, NULL);
}

static struct type *
read_sun_floating_type (const char **pp, int typenums[2],
			struct objfile *objfile)
{
  int nbits;
  int details;
  int nbytes;
  struct type *rettype;

  /* The first number has more details about the type, for example
     FN_COMPLEX.  */
  details = read_huge_number (pp, ';', &nbits, 0);
  if (nbits != 0)
    return error_type (pp, objfile);

  /* The second number is the number of bytes occupied by this type.  */
  nbytes = read_huge_number (pp, ';', &nbits, 0);
  if (nbits != 0)
    return error_type (pp, objfile);

  nbits = nbytes * TARGET_CHAR_BIT;

  if (details == NF_COMPLEX || details == NF_COMPLEX16
      || details == NF_COMPLEX32)
    {
      rettype = dbx_init_float_type (objfile, nbits / 2);
      return init_complex_type (NULL, rettype);
    }

  return dbx_init_float_type (objfile, nbits);
}

/* Read a number from the string pointed to by *PP.
   The value of *PP is advanced over the number.
   If END is nonzero, the character that ends the
   number must match END, or an error happens;
   and that character is skipped if it does match.
   If END is zero, *PP is left pointing to that character.

   If TWOS_COMPLEMENT_BITS is set to a strictly positive value and if
   the number is represented in an octal representation, assume that
   it is represented in a 2's complement representation with a size of
   TWOS_COMPLEMENT_BITS.

   If the number fits in a long, set *BITS to 0 and return the value.
   If not, set *BITS to be the number of bits in the number and return 0.

   If encounter garbage, set *BITS to -1 and return 0.  */

static long
read_huge_number (const char **pp, int end, int *bits,
		  int twos_complement_bits)
{
  const char *p = *pp;
  int sign = 1;
  int sign_bit = 0;
  long n = 0;
  int radix = 10;
  char overflow = 0;
  int nbits = 0;
  int c;
  long upper_limit;
  int twos_complement_representation = 0;

  if (*p == '-')
    {
      sign = -1;
      p++;
    }

  /* Leading zero means octal.  GCC uses this to output values larger
     than an int (because that would be hard in decimal).  */
  if (*p == '0')
    {
      radix = 8;
      p++;
    }

  /* Skip extra zeros.  */
  while (*p == '0')
    p++;

  if (sign > 0 && radix == 8 && twos_complement_bits > 0)
    {
      /* Octal, possibly signed.  Check if we have enough chars for a
	 negative number.  */

      size_t len;
      const char *p1 = p;

      while ((c = *p1) >= '0' && c < '8')
	p1++;

      len = p1 - p;
      if (len > twos_complement_bits / 3
	  || (twos_complement_bits % 3 == 0
	      && len == twos_complement_bits / 3))
	{
	  /* Ok, we have enough characters for a signed value, check
	     for signedness by testing if the sign bit is set.  */
	  sign_bit = (twos_complement_bits % 3 + 2) % 3;
	  c = *p - '0';
	  if (c & (1 << sign_bit))
	    {
	      /* Definitely signed.  */
	      twos_complement_representation = 1;
	      sign = -1;
	    }
	}
    }

  upper_limit = LONG_MAX / radix;

  while ((c = *p++) >= '0' && c < ('0' + radix))
    {
      if (n <= upper_limit)
        {
          if (twos_complement_representation)
            {
	      /* Octal, signed, twos complement representation.  In
		 this case, n is the corresponding absolute value.  */
	      if (n == 0)
		{
		  long sn = c - '0' - ((2 * (c - '0')) | (2 << sign_bit));

		  n = -sn;
		}
              else
                {
                  n *= radix;
                  n -= c - '0';
                }
            }
          else
            {
              /* unsigned representation */
              n *= radix;
              n += c - '0';		/* FIXME this overflows anyway.  */
            }
        }
      else
        overflow = 1;

      /* This depends on large values being output in octal, which is
         what GCC does.  */
      if (radix == 8)
	{
	  if (nbits == 0)
	    {
	      if (c == '0')
		/* Ignore leading zeroes.  */
		;
	      else if (c == '1')
		nbits = 1;
	      else if (c == '2' || c == '3')
		nbits = 2;
	      else
		nbits = 3;
	    }
	  else
	    nbits += 3;
	}
    }
  if (end)
    {
      if (c && c != end)
	{
	  if (bits != NULL)
	    *bits = -1;
	  return 0;
	}
    }
  else
    --p;

  if (radix == 8 && twos_complement_bits > 0 && nbits > twos_complement_bits)
    {
      /* We were supposed to parse a number with maximum
	 TWOS_COMPLEMENT_BITS bits, but something went wrong.  */
      if (bits != NULL)
	*bits = -1;
      return 0;
    }

  *pp = p;
  if (overflow)
    {
      if (nbits == 0)
	{
	  /* Large decimal constants are an error (because it is hard to
	     count how many bits are in them).  */
	  if (bits != NULL)
	    *bits = -1;
	  return 0;
	}

      /* -0x7f is the same as 0x80.  So deal with it by adding one to
         the number of bits.  Two's complement represention octals
         can't have a '-' in front.  */
      if (sign == -1 && !twos_complement_representation)
	++nbits;
      if (bits)
	*bits = nbits;
    }
  else
    {
      if (bits)
	*bits = 0;
      return n * sign;
    }
  /* It's *BITS which has the interesting information.  */
  return 0;
}

static struct type *
read_range_type (const char **pp, int typenums[2], int type_size,
                 struct objfile *objfile)
{
  struct gdbarch *gdbarch = objfile->arch ();
  const char *orig_pp = *pp;
  int rangenums[2];
  long n2, n3;
  int n2bits, n3bits;
  int self_subrange;
  struct type *result_type;
  struct type *index_type = NULL;

  /* First comes a type we are a subrange of.
     In C it is usually 0, 1 or the type being defined.  */
  if (read_type_number (pp, rangenums) != 0)
    return error_type (pp, objfile);
  self_subrange = (rangenums[0] == typenums[0] &&
		   rangenums[1] == typenums[1]);

  if (**pp == '=')
    {
      *pp = orig_pp;
      index_type = read_type (pp, objfile);
    }

  /* A semicolon should now follow; skip it.  */
  if (**pp == ';')
    (*pp)++;

  /* The remaining two operands are usually lower and upper bounds
     of the range.  But in some special cases they mean something else.  */
  n2 = read_huge_number (pp, ';', &n2bits, type_size);
  n3 = read_huge_number (pp, ';', &n3bits, type_size);

  if (n2bits == -1 || n3bits == -1)
    return error_type (pp, objfile);

  if (index_type)
    goto handle_true_range;

  /* If limits are huge, must be large integral type.  */
  if (n2bits != 0 || n3bits != 0)
    {
      char got_signed = 0;
      char got_unsigned = 0;
      /* Number of bits in the type.  */
      int nbits = 0;

      /* If a type size attribute has been specified, the bounds of
         the range should fit in this size.  If the lower bounds needs
         more bits than the upper bound, then the type is signed.  */
      if (n2bits <= type_size && n3bits <= type_size)
        {
          if (n2bits == type_size && n2bits > n3bits)
            got_signed = 1;
          else
            got_unsigned = 1;
          nbits = type_size;
        }
      /* Range from 0 to <large number> is an unsigned large integral type.  */
      else if ((n2bits == 0 && n2 == 0) && n3bits != 0)
	{
	  got_unsigned = 1;
	  nbits = n3bits;
	}
      /* Range from <large number> to <large number>-1 is a large signed
         integral type.  Take care of the case where <large number> doesn't
         fit in a long but <large number>-1 does.  */
      else if ((n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1)
	       || (n2bits != 0 && n3bits == 0
		   && (n2bits == sizeof (long) * HOST_CHAR_BIT)
		   && n3 == LONG_MAX))
	{
	  got_signed = 1;
	  nbits = n2bits;
	}

      if (got_signed || got_unsigned)
	return init_integer_type (objfile, nbits, got_unsigned, NULL);
      else
	return error_type (pp, objfile);
    }

  /* A type defined as a subrange of itself, with bounds both 0, is void.  */
  if (self_subrange && n2 == 0 && n3 == 0)
    return init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL);

  /* If n3 is zero and n2 is positive, we want a floating type, and n2
     is the width in bytes.

     Fortran programs appear to use this for complex types also.  To
     distinguish between floats and complex, g77 (and others?)  seem
     to use self-subranges for the complexes, and subranges of int for
     the floats.

     Also note that for complexes, g77 sets n2 to the size of one of
     the member floats, not the whole complex beast.  My guess is that
     this was to work well with pre-COMPLEX versions of gdb.  */

  if (n3 == 0 && n2 > 0)
    {
      struct type *float_type
	= dbx_init_float_type (objfile, n2 * TARGET_CHAR_BIT);

      if (self_subrange)
	return init_complex_type (NULL, float_type);
      else
	return float_type;
    }

  /* If the upper bound is -1, it must really be an unsigned integral.  */

  else if (n2 == 0 && n3 == -1)
    {
      int bits = type_size;

      if (bits <= 0)
	{
	  /* We don't know its size.  It is unsigned int or unsigned
	     long.  GCC 2.3.3 uses this for long long too, but that is
	     just a GDB 3.5 compatibility hack.  */
	  bits = gdbarch_int_bit (gdbarch);
	}

      return init_integer_type (objfile, bits, 1, NULL);
    }

  /* Special case: char is defined (Who knows why) as a subrange of
     itself with range 0-127.  */
  else if (self_subrange && n2 == 0 && n3 == 127)
    {
      struct type *type = init_integer_type (objfile, TARGET_CHAR_BIT,
					     0, NULL);
      TYPE_NOSIGN (type) = 1;
      return type;
    }
  /* We used to do this only for subrange of self or subrange of int.  */
  else if (n2 == 0)
    {
      /* -1 is used for the upper bound of (4 byte) "unsigned int" and
         "unsigned long", and we already checked for that,
         so don't need to test for it here.  */

      if (n3 < 0)
	/* n3 actually gives the size.  */
	return init_integer_type (objfile, -n3 * TARGET_CHAR_BIT, 1, NULL);

      /* Is n3 == 2**(8n)-1 for some integer n?  Then it's an
         unsigned n-byte integer.  But do require n to be a power of
         two; we don't want 3- and 5-byte integers flying around.  */
      {
	int bytes;
	unsigned long bits;

	bits = n3;
	for (bytes = 0; (bits & 0xff) == 0xff; bytes++)
	  bits >>= 8;
	if (bits == 0
	    && ((bytes - 1) & bytes) == 0) /* "bytes is a power of two" */
	  return init_integer_type (objfile, bytes * TARGET_CHAR_BIT, 1, NULL);
      }
    }
  /* I think this is for Convex "long long".  Since I don't know whether
     Convex sets self_subrange, I also accept that particular size regardless
     of self_subrange.  */
  else if (n3 == 0 && n2 < 0
	   && (self_subrange
	       || n2 == -gdbarch_long_long_bit
			  (gdbarch) / TARGET_CHAR_BIT))
    return init_integer_type (objfile, -n2 * TARGET_CHAR_BIT, 0, NULL);
  else if (n2 == -n3 - 1)
    {
      if (n3 == 0x7f)
	return init_integer_type (objfile, 8, 0, NULL);
      if (n3 == 0x7fff)
	return init_integer_type (objfile, 16, 0, NULL);
      if (n3 == 0x7fffffff)
	return init_integer_type (objfile, 32, 0, NULL);
    }

  /* We have a real range type on our hands.  Allocate space and
     return a real pointer.  */
handle_true_range:

  if (self_subrange)
    index_type = objfile_type (objfile)->builtin_int;
  else
    index_type = *dbx_lookup_type (rangenums, objfile);
  if (index_type == NULL)
    {
      /* Does this actually ever happen?  Is that why we are worrying
         about dealing with it rather than just calling error_type?  */

      complaint (_("base type %d of range type is not defined"), rangenums[1]);

      index_type = objfile_type (objfile)->builtin_int;
    }

  result_type
    = create_static_range_type (NULL, index_type, n2, n3);
  return (result_type);
}

/* Read in an argument list.  This is a list of types, separated by commas
   and terminated with END.  Return the list of types read in, or NULL
   if there is an error.  */

static struct field *
read_args (const char **pp, int end, struct objfile *objfile, int *nargsp,
	   int *varargsp)
{
  /* FIXME!  Remove this arbitrary limit!  */
  struct type *types[1024];	/* Allow for fns of 1023 parameters.  */
  int n = 0, i;
  struct field *rval;

  while (**pp != end)
    {
      if (**pp != ',')
	/* Invalid argument list: no ','.  */
	return NULL;
      (*pp)++;
      STABS_CONTINUE (pp, objfile);
      types[n++] = read_type (pp, objfile);
    }
  (*pp)++;			/* get past `end' (the ':' character).  */

  if (n == 0)
    {
      /* We should read at least the THIS parameter here.  Some broken stabs
	 output contained `(0,41),(0,42)=@s8;-16;,(0,43),(0,1);' where should
	 have been present ";-16,(0,43)" reference instead.  This way the
	 excessive ";" marker prematurely stops the parameters parsing.  */

      complaint (_("Invalid (empty) method arguments"));
      *varargsp = 0;
    }
  else if (types[n - 1]->code () != TYPE_CODE_VOID)
    *varargsp = 1;
  else
    {
      n--;
      *varargsp = 0;
    }

  rval = XCNEWVEC (struct field, n);
  for (i = 0; i < n; i++)
    rval[i].type = types[i];
  *nargsp = n;
  return rval;
}

/* Common block handling.  */

/* List of symbols declared since the last BCOMM.  This list is a tail
   of local_symbols.  When ECOMM is seen, the symbols on the list
   are noted so their proper addresses can be filled in later,
   using the common block base address gotten from the assembler
   stabs.  */

static struct pending *common_block;
static int common_block_i;

/* Name of the current common block.  We get it from the BCOMM instead of the
   ECOMM to match IBM documentation (even though IBM puts the name both places
   like everyone else).  */
static char *common_block_name;

/* Process a N_BCOMM symbol.  The storage for NAME is not guaranteed
   to remain after this function returns.  */

void
common_block_start (const char *name, struct objfile *objfile)
{
  if (common_block_name != NULL)
    {
      complaint (_("Invalid symbol data: common block within common block"));
    }
  common_block = *get_local_symbols ();
  common_block_i = common_block ? common_block->nsyms : 0;
  common_block_name = obstack_strdup (&objfile->objfile_obstack, name);
}

/* Process a N_ECOMM symbol.  */

void
common_block_end (struct objfile *objfile)
{
  /* Symbols declared since the BCOMM are to have the common block
     start address added in when we know it.  common_block and
     common_block_i point to the first symbol after the BCOMM in
     the local_symbols list; copy the list and hang it off the
     symbol for the common block name for later fixup.  */
  int i;
  struct symbol *sym;
  struct pending *newobj = 0;
  struct pending *next;
  int j;

  if (common_block_name == NULL)
    {
      complaint (_("ECOMM symbol unmatched by BCOMM"));
      return;
    }

  sym = new (&objfile->objfile_obstack) symbol;
  /* Note: common_block_name already saved on objfile_obstack.  */
  sym->set_linkage_name (common_block_name);
  SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK;

  /* Now we copy all the symbols which have been defined since the BCOMM.  */

  /* Copy all the struct pendings before common_block.  */
  for (next = *get_local_symbols ();
       next != NULL && next != common_block;
       next = next->next)
    {
      for (j = 0; j < next->nsyms; j++)
	add_symbol_to_list (next->symbol[j], &newobj);
    }

  /* Copy however much of COMMON_BLOCK we need.  If COMMON_BLOCK is
     NULL, it means copy all the local symbols (which we already did
     above).  */

  if (common_block != NULL)
    for (j = common_block_i; j < common_block->nsyms; j++)
      add_symbol_to_list (common_block->symbol[j], &newobj);

  SYMBOL_TYPE (sym) = (struct type *) newobj;

  /* Should we be putting local_symbols back to what it was?
     Does it matter?  */

  i = hashname (sym->linkage_name ());
  SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i];
  global_sym_chain[i] = sym;
  common_block_name = NULL;
}

/* Add a common block's start address to the offset of each symbol
   declared to be in it (by being between a BCOMM/ECOMM pair that uses
   the common block name).  */

static void
fix_common_block (struct symbol *sym, CORE_ADDR valu)
{
  struct pending *next = (struct pending *) SYMBOL_TYPE (sym);

  for (; next; next = next->next)
    {
      int j;

      for (j = next->nsyms - 1; j >= 0; j--)
	SET_SYMBOL_VALUE_ADDRESS (next->symbol[j],
				  SYMBOL_VALUE_ADDRESS (next->symbol[j])
				  + valu);
    }
}



/* Add {TYPE, TYPENUMS} to the NONAME_UNDEFS vector.
   See add_undefined_type for more details.  */

static void
add_undefined_type_noname (struct type *type, int typenums[2])
{
  struct nat nat;

  nat.typenums[0] = typenums [0];
  nat.typenums[1] = typenums [1];
  nat.type = type;

  if (noname_undefs_length == noname_undefs_allocated)
    {
      noname_undefs_allocated *= 2;
      noname_undefs = (struct nat *)
	xrealloc ((char *) noname_undefs,
		  noname_undefs_allocated * sizeof (struct nat));
    }
  noname_undefs[noname_undefs_length++] = nat;
}

/* Add TYPE to the UNDEF_TYPES vector.
   See add_undefined_type for more details.  */

static void
add_undefined_type_1 (struct type *type)
{
  if (undef_types_length == undef_types_allocated)
    {
      undef_types_allocated *= 2;
      undef_types = (struct type **)
	xrealloc ((char *) undef_types,
		  undef_types_allocated * sizeof (struct type *));
    }
  undef_types[undef_types_length++] = type;
}

/* What about types defined as forward references inside of a small lexical
   scope?  */
/* Add a type to the list of undefined types to be checked through
   once this file has been read in.
   
   In practice, we actually maintain two such lists: The first list
   (UNDEF_TYPES) is used for types whose name has been provided, and
   concerns forward references (eg 'xs' or 'xu' forward references);
   the second list (NONAME_UNDEFS) is used for types whose name is
   unknown at creation time, because they were referenced through
   their type number before the actual type was declared.
   This function actually adds the given type to the proper list.  */

static void
add_undefined_type (struct type *type, int typenums[2])
{
  if (TYPE_NAME (type) == NULL)
    add_undefined_type_noname (type, typenums);
  else
    add_undefined_type_1 (type);
}

/* Try to fix all undefined types pushed on the UNDEF_TYPES vector.  */

static void
cleanup_undefined_types_noname (struct objfile *objfile)
{
  int i;

  for (i = 0; i < noname_undefs_length; i++)
    {
      struct nat nat = noname_undefs[i];
      struct type **type;

      type = dbx_lookup_type (nat.typenums, objfile);
      if (nat.type != *type && (*type)->code () != TYPE_CODE_UNDEF)
        {
          /* The instance flags of the undefined type are still unset,
             and needs to be copied over from the reference type.
             Since replace_type expects them to be identical, we need
             to set these flags manually before hand.  */
          TYPE_INSTANCE_FLAGS (nat.type) = TYPE_INSTANCE_FLAGS (*type);
          replace_type (nat.type, *type);
        }
    }

  noname_undefs_length = 0;
}

/* Go through each undefined type, see if it's still undefined, and fix it
   up if possible.  We have two kinds of undefined types:

   TYPE_CODE_ARRAY:  Array whose target type wasn't defined yet.
   Fix:  update array length using the element bounds
   and the target type's length.
   TYPE_CODE_STRUCT, TYPE_CODE_UNION:  Structure whose fields were not
   yet defined at the time a pointer to it was made.
   Fix:  Do a full lookup on the struct/union tag.  */

static void
cleanup_undefined_types_1 (void)
{
  struct type **type;

  /* Iterate over every undefined type, and look for a symbol whose type
     matches our undefined type.  The symbol matches if:
       1. It is a typedef in the STRUCT domain;
       2. It has the same name, and same type code;
       3. The instance flags are identical.
     
     It is important to check the instance flags, because we have seen
     examples where the debug info contained definitions such as:

         "foo_t:t30=B31=xefoo_t:"

     In this case, we have created an undefined type named "foo_t" whose
     instance flags is null (when processing "xefoo_t"), and then created
     another type with the same name, but with different instance flags
     ('B' means volatile).  I think that the definition above is wrong,
     since the same type cannot be volatile and non-volatile at the same
     time, but we need to be able to cope with it when it happens.  The
     approach taken here is to treat these two types as different.  */

  for (type = undef_types; type < undef_types + undef_types_length; type++)
    {
      switch ((*type)->code ())
	{

	case TYPE_CODE_STRUCT:
	case TYPE_CODE_UNION:
	case TYPE_CODE_ENUM:
	  {
	    /* Check if it has been defined since.  Need to do this here
	       as well as in check_typedef to deal with the (legitimate in
	       C though not C++) case of several types with the same name
	       in different source files.  */
	    if (TYPE_STUB (*type))
	      {
		struct pending *ppt;
		int i;
		/* Name of the type, without "struct" or "union".  */
		const char *type_name = TYPE_NAME (*type);

		if (type_name == NULL)
		  {
		    complaint (_("need a type name"));
		    break;
		  }
		for (ppt = *get_file_symbols (); ppt; ppt = ppt->next)
		  {
		    for (i = 0; i < ppt->nsyms; i++)
		      {
			struct symbol *sym = ppt->symbol[i];

			if (SYMBOL_CLASS (sym) == LOC_TYPEDEF
			    && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN
			    && (SYMBOL_TYPE (sym)->code () ==
				(*type)->code ())
			    && (TYPE_INSTANCE_FLAGS (*type) ==
				TYPE_INSTANCE_FLAGS (SYMBOL_TYPE (sym)))
			    && strcmp (sym->linkage_name (), type_name) == 0)
                          replace_type (*type, SYMBOL_TYPE (sym));
		      }
		  }
	      }
	  }
	  break;

	default:
	  {
	    complaint (_("forward-referenced types left unresolved, "
                       "type code %d."),
		       (*type)->code ());
	  }
	  break;
	}
    }

  undef_types_length = 0;
}

/* Try to fix all the undefined types we encountered while processing
   this unit.  */

void
cleanup_undefined_stabs_types (struct objfile *objfile)
{
  cleanup_undefined_types_1 ();
  cleanup_undefined_types_noname (objfile);
}

/* See stabsread.h.  */

void
scan_file_globals (struct objfile *objfile)
{
  int hash;
  struct symbol *sym, *prev;
  struct objfile *resolve_objfile;

  /* SVR4 based linkers copy referenced global symbols from shared
     libraries to the main executable.
     If we are scanning the symbols for a shared library, try to resolve
     them from the minimal symbols of the main executable first.  */

  if (symfile_objfile && objfile != symfile_objfile)
    resolve_objfile = symfile_objfile;
  else
    resolve_objfile = objfile;

  while (1)
    {
      /* Avoid expensive loop through all minimal symbols if there are
         no unresolved symbols.  */
      for (hash = 0; hash < HASHSIZE; hash++)
	{
	  if (global_sym_chain[hash])
	    break;
	}
      if (hash >= HASHSIZE)
	return;

      for (minimal_symbol *msymbol : resolve_objfile->msymbols ())
	{
	  QUIT;

	  /* Skip static symbols.  */
	  switch (MSYMBOL_TYPE (msymbol))
	    {
	    case mst_file_text:
	    case mst_file_data:
	    case mst_file_bss:
	      continue;
	    default:
	      break;
	    }

	  prev = NULL;

	  /* Get the hash index and check all the symbols
	     under that hash index.  */

	  hash = hashname (msymbol->linkage_name ());

	  for (sym = global_sym_chain[hash]; sym;)
	    {
	      if (strcmp (msymbol->linkage_name (), sym->linkage_name ()) == 0)
		{
		  /* Splice this symbol out of the hash chain and
		     assign the value we have to it.  */
		  if (prev)
		    {
		      SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym);
		    }
		  else
		    {
		      global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym);
		    }

		  /* Check to see whether we need to fix up a common block.  */
		  /* Note: this code might be executed several times for
		     the same symbol if there are multiple references.  */
		  if (sym)
		    {
		      if (SYMBOL_CLASS (sym) == LOC_BLOCK)
			{
			  fix_common_block (sym,
					    MSYMBOL_VALUE_ADDRESS (resolve_objfile,
								   msymbol));
			}
		      else
			{
			  SET_SYMBOL_VALUE_ADDRESS
			    (sym, MSYMBOL_VALUE_ADDRESS (resolve_objfile,
							 msymbol));
			}
		      SYMBOL_SECTION (sym) = MSYMBOL_SECTION (msymbol);
		    }

		  if (prev)
		    {
		      sym = SYMBOL_VALUE_CHAIN (prev);
		    }
		  else
		    {
		      sym = global_sym_chain[hash];
		    }
		}
	      else
		{
		  prev = sym;
		  sym = SYMBOL_VALUE_CHAIN (sym);
		}
	    }
	}
      if (resolve_objfile == objfile)
	break;
      resolve_objfile = objfile;
    }

  /* Change the storage class of any remaining unresolved globals to
     LOC_UNRESOLVED and remove them from the chain.  */
  for (hash = 0; hash < HASHSIZE; hash++)
    {
      sym = global_sym_chain[hash];
      while (sym)
	{
	  prev = sym;
	  sym = SYMBOL_VALUE_CHAIN (sym);

	  /* Change the symbol address from the misleading chain value
	     to address zero.  */
	  SET_SYMBOL_VALUE_ADDRESS (prev, 0);

	  /* Complain about unresolved common block symbols.  */
	  if (SYMBOL_CLASS (prev) == LOC_STATIC)
	    SYMBOL_ACLASS_INDEX (prev) = LOC_UNRESOLVED;
	  else
	    complaint (_("%s: common block `%s' from "
			 "global_sym_chain unresolved"),
		       objfile_name (objfile), prev->print_name ());
	}
    }
  memset (global_sym_chain, 0, sizeof (global_sym_chain));
}

/* Initialize anything that needs initializing when starting to read
   a fresh piece of a symbol file, e.g. reading in the stuff corresponding
   to a psymtab.  */

void
stabsread_init (void)
{
}

/* Initialize anything that needs initializing when a completely new
   symbol file is specified (not just adding some symbols from another
   file, e.g. a shared library).  */

void
stabsread_new_init (void)
{
  /* Empty the hash table of global syms looking for values.  */
  memset (global_sym_chain, 0, sizeof (global_sym_chain));
}

/* Initialize anything that needs initializing at the same time as
   start_symtab() is called.  */

void
start_stabs (void)
{
  global_stabs = NULL;		/* AIX COFF */
  /* Leave FILENUM of 0 free for builtin types and this file's types.  */
  n_this_object_header_files = 1;
  type_vector_length = 0;
  type_vector = (struct type **) 0;
  within_function = 0;

  /* FIXME: If common_block_name is not already NULL, we should complain().  */
  common_block_name = NULL;
}

/* Call after end_symtab().  */

void
end_stabs (void)
{
  if (type_vector)
    {
      xfree (type_vector);
    }
  type_vector = 0;
  type_vector_length = 0;
  previous_stab_code = 0;
}

void
finish_global_stabs (struct objfile *objfile)
{
  if (global_stabs)
    {
      patch_block_stabs (*get_global_symbols (), global_stabs, objfile);
      xfree (global_stabs);
      global_stabs = NULL;
    }
}

/* Find the end of the name, delimited by a ':', but don't match
   ObjC symbols which look like -[Foo bar::]:bla.  */
static const char *
find_name_end (const char *name)
{
  const char *s = name;

  if (s[0] == '-' || *s == '+')
    {
      /* Must be an ObjC method symbol.  */
      if (s[1] != '[')
	{
	  error (_("invalid symbol name \"%s\""), name);
	}
      s = strchr (s, ']');
      if (s == NULL)
	{
	  error (_("invalid symbol name \"%s\""), name);
	}
      return strchr (s, ':');
    }
  else
    {
      return strchr (s, ':');
    }
}

/* See stabsread.h.  */

int
hashname (const char *name)
{
  return fast_hash (name, strlen (name)) % HASHSIZE;
}

/* Initializer for this module.  */

void _initialize_stabsread ();
void
_initialize_stabsread ()
{
  undef_types_allocated = 20;
  undef_types_length = 0;
  undef_types = XNEWVEC (struct type *, undef_types_allocated);

  noname_undefs_allocated = 20;
  noname_undefs_length = 0;
  noname_undefs = XNEWVEC (struct nat, noname_undefs_allocated);

  stab_register_index = register_symbol_register_impl (LOC_REGISTER,
						       &stab_register_funcs);
  stab_regparm_index = register_symbol_register_impl (LOC_REGPARM_ADDR,
						      &stab_register_funcs);
}