[LLVMbugs] [Bug 9247] New: Crash on invalid in clang::Sema::ActOnFinishCXXMemberSpecification

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=9247

           Summary: Crash on invalid in
                    clang::Sema::ActOnFinishCXXMemberSpecification
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: matthewbg at google.com
                CC: llvmbugs at cs.uiuc.edu, dgregor at apple.com


struct A {
  virtual void g(const A& input) = 0;
  struct B {
    C* f(int foo);
  };
};

$ clang -fsyntax-only /tmp/3466630.ii
/tmp/3466630.ii:4:5: error: unknown type name 'C'
    C* f(int foo);
    ^
0  clang           0x000000000215f340
1  clang           0x000000000215f13c
2  libpthread.so.0 0x00007fa19e7789f0
3  clang           0x00000000011fd5fa llvm::PointerIntPair<void*, 1u, bool,
llvm::PointerUnionUIntTraits<clang::TypeSourceInfo*,
clang::DeclaratorDecl::ExtInfo*> >::getInt() const + 16
4  clang           0x00000000011fc25e int
llvm::PointerUnion<clang::TypeSourceInfo*,
clang::DeclaratorDecl::ExtInfo*>::is<clang::DeclaratorDecl::ExtInfo*>() const +
74
5  clang           0x00000000011f84e0 clang::DeclaratorDecl::hasExtInfo() const
+ 28
6  clang           0x00000000011f851e
clang::DeclaratorDecl::getTypeSourceInfo() const + 24
7  clang           0x000000000154ca72
8  clang           0x000000000154c3dc
9  clang           0x000000000154d0a5
10 clang           0x000000000154d126
11 clang           0x000000000154d1bd
12 clang           0x000000000154d368
13 clang           0x000000000154d470
clang::Sema::CheckCompletedCXXClass(clang::CXXRecordDecl*) + 158
14 clang           0x000000000154e1af
clang::Sema::ActOnFinishCXXMemberSpecification(clang::Scope*,
clang::SourceLocation, clang::Decl*, clang::SourceLocation,
clang::SourceLocation, clang::AttributeList*) + 199
15 clang           0x0000000001399f33
clang::Parser::ParseCXXMemberSpecification(clang::SourceLocation, unsigned int,
clang::Decl*) + 1703
16 clang           0x00000000013978a0
clang::Parser::ParseClassSpecifier(clang::tok::TokenKind,
clang::SourceLocation, clang::DeclSpec&, clang::Parser::ParsedTemplateInfo
const&, clang::AccessSpecifier, bool) + 5760
17 clang           0x000000000137e100
clang::Parser::ParseDeclarationSpecifiers(clang::DeclSpec&,
clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier,
clang::Parser::DeclSpecContext) + 6450
18 clang           0x0000000001359a20
clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsingDeclSpec&,
clang::AccessSpecifier) + 88
19 clang           0x0000000001359e45
clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&,
clang::AccessSpecifier) + 113
20 clang           0x00000000013597c3
clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&,
clang::Parser::ParsingDeclSpec*) + 2199
21 clang           0x0000000001358e9c
clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&) + 210
22 clang           0x00000000013561c1 clang::ParseAST(clang::Sema&, bool) + 328
23 clang           0x000000000129036d clang::ASTFrontendAction::ExecuteAction()
+ 263
24 clang           0x000000000128ffc5 clang::FrontendAction::Execute() + 319
25 clang           0x000000000120915f
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 747
26 clang           0x0000000000e98f25
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 879
27 clang           0x0000000000e8ad07 cc1_main(char const**, char const**, char
const*, void*) + 951
28 clang           0x0000000000e94448 main + 481
29 libc.so.6       0x00007fa19dedfd5d __libc_start_main + 253
30 clang           0x0000000000e8a36e
Stack dump:
0.    Program arguments: clang -cc1 -triple x86_64-unknown-linux-gnu
-fsyntax-only -disable-free -main-file-name 3466630.ii -mrelocation-model
static -mdisable-fp-elim -masm-verbose -mconstructor-aliases -munwind-tables
-target-cpu x86-64 -momit-leaf-frame-pointer -resource-dir ../lib/clang/2.0
-ferror-limit 19 -fmessage-length 80 -fexceptions -fgnu-runtime
-fdiagnostics-show-option -fcolor-diagnostics -x c++-cpp-output /tmp/3466630.ii 
1.    /tmp/3466630.ii:6:2: current parser token ';'
2.    /tmp/3466630.ii:1:1: parsing struct/union/class body 'A'
clang: error: unable to execute command: Segmentation fault
clang: error: clang frontend command failed due to signal 1 (use -v to see
invocation)

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