[LLVMbugs] [Bug 9071] New: Crash using -Wuninitialized

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=9071

           Summary: Crash using -Wuninitialized
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: abramobagnara at tin.it
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=6058)
 --> (http://llvm.org/bugs/attachment.cgi?id=6058)
Source file to be used to reproduce the crash.

This is reproducible with clang r124358

$ clang -cc1 -Wuninitialized bug.c
clang: UninitializedValuesV2.cpp:162:
llvm::BitVector&<unnamed>::CFGBlockValues::getBitVector(const clang::CFGBlock*,
const clang::CFGBlock*): Assertion `block->getTerminator()' failed.
0  clang     0x09affbef
1  clang     0x09aff97c
2            0x00f12400 __kernel_sigreturn + 0
3  libc.so.6 0x00255a82 abort + 386
4  libc.so.6 0x0024b718 __assert_fail + 248
5  clang     0x0913653d
6  clang     0x09137934
7  clang     0x09137b71
clang::runUninitializedVariablesAnalysis(clang::DeclContext const&, clang::CFG
const&, clang::AnalysisContext&, clang::UninitVariablesHandler&) + 272
8  clang     0x08fd1f7b
clang::sema::AnalysisBasedWarnings::IssueWarnings(clang::sema::AnalysisBasedWarnings::Policy,
clang::Decl const*, clang::QualType) + 701
9  clang     0x08fd2077
clang::sema::AnalysisBasedWarnings::IssueWarnings(clang::sema::AnalysisBasedWarnings::Policy,
clang::FunctionDecl const*) + 61
10 clang     0x08df3728 clang::Sema::ActOnFinishFunctionBody(clang::Decl*,
clang::Stmt*, bool) + 1966
11 clang     0x08df2f73 clang::Sema::ActOnFinishFunctionBody(clang::Decl*,
clang::Stmt*) + 59
12 clang     0x08d46b9e clang::Parser::ParseFunctionStatementBody(clang::Decl*)
+ 394
13 clang     0x08d4dd77
clang::Parser::ParseFunctionDefinition(clang::Parser::ParsingDeclarator&,
clang::Parser::ParsedTemplateInfo const&) + 911
14 clang     0x08d53c3d
clang::Parser::ParseDeclGroup(clang::Parser::ParsingDeclSpec&, unsigned int,
bool, clang::SourceLocation*) + 467
15 clang     0x08d4d954
clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsingDeclSpec&,
clang::AccessSpecifier) + 954
16 clang     0x08d4d9c9
clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&,
clang::AccessSpecifier) + 99
17 clang     0x08d4d378
clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&,
clang::Parser::ParsingDeclSpec*) + 2062
18 clang     0x08d4cac7
clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&) + 223
19 clang     0x08d357d2 clang::ParseAST(clang::Sema&, bool) + 306
20 clang     0x08ab0201 clang::ASTFrontendAction::ExecuteAction() + 253
21 clang     0x08aafe5c clang::FrontendAction::Execute() + 316
22 clang     0x08a9a23f
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 779
23 clang     0x08a482bf
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 785
24 clang     0x08a3b077 cc1_main(char const**, char const**, char const*,
void*) + 1064
25 clang     0x08a43d99 main + 521
26 libc.so.6 0x0023ebd6 __libc_start_main + 230
27 clang     0x08a3a721
Stack dump:
0.    Program arguments: clang -cc1 -Wuninitialized bug.c 
1.    <eof> parser at end of file
2.    bug.c:2:1: parsing function body 'f'
Aborted

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