[cfe-dev] New (?) ObjC SemA regression

[Keith Bauer]

I'm pretty sure clang used to be able to -fsyntax-only WebKit.h, but
it certainly can't on the trunk, on Leopard:

CookieJar:Desktop keith$ cat test.m
#import <WebKit/WebKit.h>
CookieJar:Desktop keith$ clang -arch ppc -fsyntax-only test.m
Assertion failed: (0 && "Sema::ActOnField(): Unknown TagDecl"),
function ActOnField, file SemaDecl.cpp, line 1770.
0   clang                               0x001f0485
_ZN40_GLOBAL__N_Signals.cpp_00000000_8827448115PrintStackTraceEv + 45
1   clang                               0x001f082b
_ZN40_GLOBAL__N_Signals.cpp_00000000_8827448113SignalHandlerEi + 323
2   libSystem.B.dylib                   0x92abc97b _sigtramp + 43
3   ???                                 0xffffffff 0x0 + 4294967295
4   libSystem.B.dylib                   0x92b35782 raise + 26
5   libSystem.B.dylib                   0x92b44d3f abort + 73
6   libSystem.B.dylib                   0x92b36923 __assert_rtn + 101
7   clang                               0x00068675
_ZN5clang4Sema10ActOnFieldEPNS_5ScopeEPvNS_14SourceLocationERNS_10DeclaratorES3_
+ 509
8   clang                               0x000cbabf
_ZN5clang6Parser22ParseStructDeclarationEPvRN4llvm15SmallVectorImplIS1_EE
+ 489
9   clang                               0x000d33de
_ZN5clang6Parser21ParseObjCPropertyDeclEPvNS_14SourceLocationE + 206
10  clang                               0x000d5dd5
_ZN5clang6Parser26ParseObjCInterfaceDeclListEPvNS_3tok15ObjCKeywordKindE
+ 361
11  clang                               0x000d67f0
_ZN5clang6Parser31ParseObjCAtInterfaceDeclarationENS_14SourceLocationEPNS_13AttributeListE
+ 948
12  clang                               0x000d6bd4
_ZN5clang6Parser21ParseObjCAtDirectivesEv + 224
13  clang                               0x000ddbfa
_ZN5clang6Parser24ParseExternalDeclarationEv + 336
14  clang                               0x000ddcd7
_ZN5clang6Parser17ParseTopLevelDeclERPv + 61
15  clang                               0x00061578
_ZN37_GLOBAL__N__ZN5clang11ASTConsumerD2Ev11ASTStreamer16ReadTopLevelDeclEv
+ 96
16  clang                               0x00061736
_ZN5clang8ParseASTERNS_12PreprocessorEjPNS_11ASTConsumerEb + 272
17  clang                               0x00021fd2
_ZNSsC1IN9__gnu_cxx17__normal_iteratorIPcSsEEEET_S4_RKSaIcE + 1676
18  clang                               0x00023e7e main + 966
19  clang                               0x000022ea start + 54
Abort trap
CookieJar:Desktop keith$