SourceColumnMap::byteToContainingColumn(int) const: Assertion `0 <= N && N < static_cast<int>(m_byteToColumn.size())' failed

[llvmbot]

Bugzilla Link	33589
Resolution	FIXED
Resolved on	Aug 08, 2017 17:03
Version	trunk
OS	Linux
Blocks	#33196
Attachments	preprocessed source, reproducer script
Reporter	LLVM Bugzilla Contributor
CC	@zmodem,@stbergmann

Extended Description

Trying to build raptor2 2.0.15 (http://download.librdf.org/source/raptor2-2.0.15.tar.gz) with a recent clang 5.0 snapshot (SVN rev 305643) results in

clang-5.0: ../tools/clang/lib/Frontend/TextDiagnostic.cpp:281: int (anonymous namespace)::SourceColumnMap::byteToContainingColumn(int) const: Assertion `0 <= N && N < static_cast(m_byteToColumn.size())' failed.
#​0 0x0000003e4a2d859f llvm::sys::PrintStackTrace(llvm::raw_ostream&) (/usr/lib64/libLLVMSupport.so.5.0+0x3e4a2d859f)
#​1 0x0000003e4a2d717e llvm::sys::RunSignalHandlers() (/usr/lib64/libLLVMSupport.so.5.0+0x3e4a2d717e)
#​2 0x0000003e4a2d8803 (/usr/lib64/libLLVMSupport.so.5.0+0x3e4a2d8803)
#​3 0x0000003b2a60f830 __restore_rt (/lib64/libpthread.so.0+0x3b2a60f830)
#​4 0x0000003b29e2f0b6 __GI_raise (/lib64/libc.so.6+0x3b29e2f0b6)
#​5 0x0000003b29e2ffbb __GI_abort (/lib64/libc.so.6+0x3b29e2ffbb)
#​6 0x0000003b29e29732 __GI___assert_fail (/lib64/libc.so.6+0x3b29e29732)
#​7 0x0000003b29e29776 __GI___assert_perror_fail (/lib64/libc.so.6+0x3b29e29776)
#​8 0x0000003e560d7d06 std::__cxx11::basic_string<char, std::char_traits, std::allocator > std::operator+<char, std::char_traits, std::allocator >(char, std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&) (/usr/lib64/libclangFrontend.so.5.0+0x3e560d7d06)
#​9 0x0000003e560d6b51 clang::TextDiagnostic::emitSnippetAndCaret(clang::SourceLocation, clang::DiagnosticsEngine::Level, llvm::SmallVectorImplclang::CharSourceRange&, llvm::ArrayRefclang::FixItHint, clang::SourceManager const&) (/usr/lib64/libclangFrontend.so.5.0+0x3e560d6b51)
#​10 0x0000003e560a90b9 clang::DiagnosticRenderer::emitCaret(clang::SourceLocation, clang::DiagnosticsEngine::Level, llvm::ArrayRefclang::CharSourceRange, llvm::ArrayRefclang::FixItHint, clang::SourceManager const&) (/usr/lib64/libclangFrontend.so.5.0+0x3e560a90b9)
#​11 0x0000003e560a8d93 clang::DiagnosticRenderer::emitDiagnostic(clang::SourceLocation, clang::DiagnosticsEngine::Level, llvm::StringRef, llvm::ArrayRefclang::CharSourceRange, llvm::ArrayRefclang::FixItHint, clang::SourceManager const*, llvm::PointerUnion<clang::Diagnostic const*, clang::StoredDiagnostic const*>) (/usr/lib64/libclangFrontend.so.5.0+0x3e560a8d93)
#​12 0x0000003e560aa26c clang::DiagnosticRenderer::emitSingleMacroExpansion(clang::SourceLocation, clang::DiagnosticsEngine::Level, llvm::ArrayRefclang::CharSourceRange, clang::SourceManager const&) (/usr/lib64/libclangFrontend.so.5.0+0x3e560aa26c)
#​13 0x0000003e560a95e6 clang::DiagnosticRenderer::emitMacroExpansions(clang::SourceLocation, clang::DiagnosticsEngine::Level, llvm::ArrayRefclang::CharSourceRange, llvm::ArrayRefclang::FixItHint, clang::SourceManager const&) (/usr/lib64/libclangFrontend.so.5.0+0x3e560a95e6)
#​14 0x0000003e560a8dd8 clang::DiagnosticRenderer::emitDiagnostic(clang::SourceLocation, clang::DiagnosticsEngine::Level, llvm::StringRef, llvm::ArrayRefclang::CharSourceRange, llvm::ArrayRefclang::FixItHint, clang::SourceManager const*, llvm::PointerUnion<clang::Diagnostic const*, clang::StoredDiagnostic const*>) (/usr/lib64/libclangFrontend.so.5.0+0x3e560a8dd8)
#​15 0x0000003e560d9ca5 clang::TextDiagnosticPrinter::HandleDiagnostic(clang::DiagnosticsEngine::Level, clang::Diagnostic const&) (/usr/lib64/libclangFrontend.so.5.0+0x3e560d9ca5)
#​16 0x0000003e541211dc clang::DiagnosticIDs::EmitDiag(clang::DiagnosticsEngine&, clang::DiagnosticIDs::Level) const (/usr/lib64/libclangBasic.so.5.0+0x3e541211dc)
#​17 0x0000003e5412110c clang::DiagnosticIDs::ProcessDiag(clang::DiagnosticsEngine&) const (/usr/lib64/libclangBasic.so.5.0+0x3e5412110c)
#​18 0x0000003e5411c916 clang::DiagnosticsEngine::EmitCurrentDiagnostic(bool) (/usr/lib64/libclangBasic.so.5.0+0x3e5411c916)
#​19 0x0000003e5387321a (/usr/lib64/libclangLex.so.5.0+0x3e5387321a)
#​20 0x0000003e5386f26f clang::Preprocessor::HandlePragmaDirective(clang::SourceLocation, clang::PragmaIntroducerKind) (/usr/lib64/libclangLex.so.5.0+0x3e5386f26f)
#​21 0x0000003e5386f741 clang::Preprocessor::Handle_Pragma(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5386f741)
#​22 0x0000003e53864ff4 clang::Preprocessor::ExpandBuiltinMacro(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e53864ff4)
#​23 0x0000003e53864842 clang::Preprocessor::HandleMacroExpandedIdentifier(clang::Token&, clang::MacroDefinition const&) (/usr/lib64/libclangLex.so.5.0+0x3e53864842)
#​24 0x0000003e5387a6a1 clang::Preprocessor::HandleIdentifier(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5387a6a1)
#​25 0x0000003e5387ac68 clang::Preprocessor::Lex(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5387ac68)
#​26 0x0000003e5386f74c clang::Preprocessor::Handle_Pragma(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5386f74c)
#​27 0x0000003e53864ff4 clang::Preprocessor::ExpandBuiltinMacro(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e53864ff4)
#​28 0x0000003e53864842 clang::Preprocessor::HandleMacroExpandedIdentifier(clang::Token&, clang::MacroDefinition const&) (/usr/lib64/libclangLex.so.5.0+0x3e53864842)
#​29 0x0000003e5387a6a1 clang::Preprocessor::HandleIdentifier(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5387a6a1)
#​30 0x0000003e5387ac68 clang::Preprocessor::Lex(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5387ac68)
#​31 0x0000003e5386f74c clang::Preprocessor::Handle_Pragma(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5386f74c)
#​32 0x0000003e53864ff4 clang::Preprocessor::ExpandBuiltinMacro(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e53864ff4)
#​33 0x0000003e53864842 clang::Preprocessor::HandleMacroExpandedIdentifier(clang::Token&, clang::MacroDefinition const&) (/usr/lib64/libclangLex.so.5.0+0x3e53864842)
#​34 0x0000003e5387a6a1 clang::Preprocessor::HandleIdentifier(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5387a6a1)
#​35 0x0000003e5387ac68 clang::Preprocessor::Lex(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5387ac68)
#​36 0x0000003e5782ebf9 (/usr/lib64/libclangParse.so.5.0+0x3e5782ebf9)
#​37 0x0000003e578a8dc9 clang::Parser::ExpectAndConsumeSemi(unsigned int) (/usr/lib64/libclangParse.so.5.0+0x3e578a8dc9)
#​38 0x0000003e57896c85 clang::Parser::ParseExprStatement() (/usr/lib64/libclangParse.so.5.0+0x3e57896c85)
#​39 0x0000003e57896275 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::AllowedConstructsKind, clang::SourceLocation*, clang::Parser::ParsedAttributesWithRange&) (/usr/lib64/libclangParse.so.5.0+0x3e57896275)
#​40 0x0000003e57895ec6 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::AllowedConstructsKind, clang::SourceLocation*) (/usr/lib64/libclangParse.so.5.0+0x3e57895ec6)
#​41 0x0000003e5789afaf clang::Parser::ParseCompoundStatementBody(bool) (/usr/lib64/libclangParse.so.5.0+0x3e5789afaf)
#​42 0x0000003e5789b83b clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/usr/lib64/libclangParse.so.5.0+0x3e5789b83b)
#​43 0x0000003e578acd62 clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) (/usr/lib64/libclangParse.so.5.0+0x3e578acd62)
#​44 0x0000003e5783dec1 clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, unsigned int, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/usr/lib64/libclangParse.so.5.0+0x3e5783dec1)
#​45 0x0000003e578ac3bb clang::Parser::ParseDeclOrFunctionDefInternal(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/usr/lib64/libclangParse.so.5.0+0x3e578ac3bb)
#​46 0x0000003e578abf07 clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/usr/lib64/libclangParse.so.5.0+0x3e578abf07)
#​47 0x0000003e578ab52c clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec*) (/usr/lib64/libclangParse.so.5.0+0x3e578ab52c)
#​48 0x0000003e578aa933 clang::Parser::ParseTopLevelDecl(clang::OpaquePtrclang::DeclGroupRef&) (/usr/lib64/libclangParse.so.5.0+0x3e578aa933)
#​49 0x0000003e5782df92 clang::ParseAST(clang::Sema&, bool, bool) (/usr/lib64/libclangParse.so.5.0+0x3e5782df92)
#​50 0x0000003e560aedf7 clang::FrontendAction::Execute() (/usr/lib64/libclangFrontend.so.5.0+0x3e560aedf7)
#​51 0x0000003e5607b85a clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/usr/lib64/libclangFrontend.so.5.0+0x3e5607b85a)
#​52 0x0000003e5b406227 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/usr/lib64/libclangFrontendTool.so.5.0+0x3e5b406227)
#​53 0x000000000041115f cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/usr/bin/clang-5.0+0x41115f)
#​54 0x000000000040f20a main (/usr/bin/clang-5.0+0x40f20a)
#​55 0x0000003b29e20ff3 __libc_start_main (/lib64/libc.so.6+0x3b29e20ff3)
#​56 0x000000000040cfba _start (/usr/bin/clang-5.0+0x40cfba)
Stack dump:
0. Program arguments: /usr/bin/clang-5.0 -cc1 -triple x86_64-unknown-linux-gnu -emit-llvm-bc -flto -flto-unit -disable-free -main-file-name turtle_parser.c -mrelocation-model pic -pic-level 2 -mthread-model posix -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -momit-leaf-frame-pointer -dwarf-column-info -debug-info-kind=limited -dwarf-version=4 -debugger-tuning=gdb -coverage-notes-file /home/bero/abf/raptor2/BUILD/raptor2-2.0.15/src/.libs/turtle_parser.gcno -resource-dir /usr/lib64/clang/5.0.0 -D HAVE_CONFIG_H -I . -D LIBRDFA_IN_RAPTOR -I ../librdfa -D RAPTOR_INTERNAL=1 -I /usr/include/libxml2 -I /usr/include/libxml2 -D _FORTIFY_SOURCE=2 -D PIC -internal-isystem /usr/local/include -internal-isystem /usr/lib64/clang/5.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -Os -Wstrict-aliasing=2 -Wformat -Werror=format-security -fdebug-compilation-dir /home/bero/abf/raptor2/BUILD/raptor2-2.0.15/src -ferror-limit 19 -fmessage-length 277 -stack-protector 1 -stack-protector-buffer-size 4 -fobjc-runtime=gcc -fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-slp -o .libs/turtle_parser.o -x c turtle_parser.c

1.  turtle_parser.c:1555:3 <Spelling=turtle_parser.c:333:64>: current parser token ')'
   

2.  turtle_parser.c:1349:1: parsing function body 'turtle_parser_parse'
   

3.  turtle_parser.c:1349:1: in compound statement ('{}')
   

clang-5.0: error: unable to execute command: Aborted (core dumped)

[llvmbot]

Pretty much the same thing happens when building rasqal 0.9.33 (http://download.librdf.org/source/rasqal-0.9.33.tar.gz):

clang-5.0: ../tools/clang/lib/Frontend/TextDiagnostic.cpp:281: int (anonymous namespace)::SourceColumnMap::byteToContainingColumn(int) const: Assertion `0 <= N && N < static_cast(m_byteToColumn.size())' failed.
#​0 0x0000003e4a2d859f llvm::sys::PrintStackTrace(llvm::raw_ostream&) (/usr/lib64/libLLVMSupport.so.5.0+0x3e4a2d859f)
#​1 0x0000003e4a2d717e llvm::sys::RunSignalHandlers() (/usr/lib64/libLLVMSupport.so.5.0+0x3e4a2d717e)
#​2 0x0000003e4a2d8803 (/usr/lib64/libLLVMSupport.so.5.0+0x3e4a2d8803)
#​3 0x0000003b2a60f830 __restore_rt (/lib64/libpthread.so.0+0x3b2a60f830)
#​4 0x0000003b29e2f0b6 __GI_raise (/lib64/libc.so.6+0x3b29e2f0b6)
#​5 0x0000003b29e2ffbb __GI_abort (/lib64/libc.so.6+0x3b29e2ffbb)
#​6 0x0000003b29e29732 __GI___assert_fail (/lib64/libc.so.6+0x3b29e29732)
#​7 0x0000003b29e29776 __GI___assert_perror_fail (/lib64/libc.so.6+0x3b29e29776)
#​8 0x0000003e560d7d06 std::__cxx11::basic_string<char, std::char_traits, std::allocator > std::operator+<char, std::char_traits, std::allocator >(char, std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&) (/usr/lib64/libclangFrontend.so.5.0+0x3e560d7d06)
#​9 0x0000003e560d6b51 clang::TextDiagnostic::emitSnippetAndCaret(clang::SourceLocation, clang::DiagnosticsEngine::Level, llvm::SmallVectorImplclang::CharSourceRange&, llvm::ArrayRefclang::FixItHint, clang::SourceManager const&) (/usr/lib64/libclangFrontend.so.5.0+0x3e560d6b51)
#​10 0x0000003e560a90b9 clang::DiagnosticRenderer::emitCaret(clang::SourceLocation, clang::DiagnosticsEngine::Level, llvm::ArrayRefclang::CharSourceRange, llvm::ArrayRefclang::FixItHint, clang::SourceManager const&) (/usr/lib64/libclangFrontend.so.5.0+0x3e560a90b9)
#​11 0x0000003e560a8d93 clang::DiagnosticRenderer::emitDiagnostic(clang::SourceLocation, clang::DiagnosticsEngine::Level, llvm::StringRef, llvm::ArrayRefclang::CharSourceRange, llvm::ArrayRefclang::FixItHint, clang::SourceManager const*, llvm::PointerUnion<clang::Diagnostic const*, clang::StoredDiagnostic const*>) (/usr/lib64/libclangFrontend.so.5.0+0x3e560a8d93)
#​12 0x0000003e560aa26c clang::DiagnosticRenderer::emitSingleMacroExpansion(clang::SourceLocation, clang::DiagnosticsEngine::Level, llvm::ArrayRefclang::CharSourceRange, clang::SourceManager const&) (/usr/lib64/libclangFrontend.so.5.0+0x3e560aa26c)
#​13 0x0000003e560a95e6 clang::DiagnosticRenderer::emitMacroExpansions(clang::SourceLocation, clang::DiagnosticsEngine::Level, llvm::ArrayRefclang::CharSourceRange, llvm::ArrayRefclang::FixItHint, clang::SourceManager const&) (/usr/lib64/libclangFrontend.so.5.0+0x3e560a95e6)
#​14 0x0000003e560a8dd8 clang::DiagnosticRenderer::emitDiagnostic(clang::SourceLocation, clang::DiagnosticsEngine::Level, llvm::StringRef, llvm::ArrayRefclang::CharSourceRange, llvm::ArrayRefclang::FixItHint, clang::SourceManager const*, llvm::PointerUnion<clang::Diagnostic const*, clang::StoredDiagnostic const*>) (/usr/lib64/libclangFrontend.so.5.0+0x3e560a8dd8)
#​15 0x0000003e560d9ca5 clang::TextDiagnosticPrinter::HandleDiagnostic(clang::DiagnosticsEngine::Level, clang::Diagnostic const&) (/usr/lib64/libclangFrontend.so.5.0+0x3e560d9ca5)
#​16 0x0000003e541211dc clang::DiagnosticIDs::EmitDiag(clang::DiagnosticsEngine&, clang::DiagnosticIDs::Level) const (/usr/lib64/libclangBasic.so.5.0+0x3e541211dc)
#​17 0x0000003e5412110c clang::DiagnosticIDs::ProcessDiag(clang::DiagnosticsEngine&) const (/usr/lib64/libclangBasic.so.5.0+0x3e5412110c)
#​18 0x0000003e5411c916 clang::DiagnosticsEngine::EmitCurrentDiagnostic(bool) (/usr/lib64/libclangBasic.so.5.0+0x3e5411c916)
#​19 0x0000003e5387321a (/usr/lib64/libclangLex.so.5.0+0x3e5387321a)
#​20 0x0000003e5386f26f clang::Preprocessor::HandlePragmaDirective(clang::SourceLocation, clang::PragmaIntroducerKind) (/usr/lib64/libclangLex.so.5.0+0x3e5386f26f)
#​21 0x0000003e5386f741 clang::Preprocessor::Handle_Pragma(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5386f741)
#​22 0x0000003e53864ff4 clang::Preprocessor::ExpandBuiltinMacro(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e53864ff4)
#​23 0x0000003e53864842 clang::Preprocessor::HandleMacroExpandedIdentifier(clang::Token&, clang::MacroDefinition const&) (/usr/lib64/libclangLex.so.5.0+0x3e53864842)
#​24 0x0000003e5387a6a1 clang::Preprocessor::HandleIdentifier(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5387a6a1)
#​25 0x0000003e5387ac68 clang::Preprocessor::Lex(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5387ac68)
#​26 0x0000003e5386f74c clang::Preprocessor::Handle_Pragma(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5386f74c)
#​27 0x0000003e53864ff4 clang::Preprocessor::ExpandBuiltinMacro(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e53864ff4)
#​28 0x0000003e53864842 clang::Preprocessor::HandleMacroExpandedIdentifier(clang::Token&, clang::MacroDefinition const&) (/usr/lib64/libclangLex.so.5.0+0x3e53864842)
#​29 0x0000003e5387a6a1 clang::Preprocessor::HandleIdentifier(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5387a6a1)
#​30 0x0000003e5387ac68 clang::Preprocessor::Lex(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5387ac68)
#​31 0x0000003e5386f74c clang::Preprocessor::Handle_Pragma(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5386f74c)
#​32 0x0000003e53864ff4 clang::Preprocessor::ExpandBuiltinMacro(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e53864ff4)
#​33 0x0000003e53864842 clang::Preprocessor::HandleMacroExpandedIdentifier(clang::Token&, clang::MacroDefinition const&) (/usr/lib64/libclangLex.so.5.0+0x3e53864842)
#​34 0x0000003e5387a6a1 clang::Preprocessor::HandleIdentifier(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5387a6a1)
#​35 0x0000003e5387ac68 clang::Preprocessor::Lex(clang::Token&) (/usr/lib64/libclangLex.so.5.0+0x3e5387ac68)
#​36 0x0000003e5782ebf9 (/usr/lib64/libclangParse.so.5.0+0x3e5782ebf9)
#​37 0x0000003e578a8dc9 clang::Parser::ExpectAndConsumeSemi(unsigned int) (/usr/lib64/libclangParse.so.5.0+0x3e578a8dc9)
#​38 0x0000003e57896c85 clang::Parser::ParseExprStatement() (/usr/lib64/libclangParse.so.5.0+0x3e57896c85)
#​39 0x0000003e57896275 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::AllowedConstructsKind, clang::SourceLocation*, clang::Parser::ParsedAttributesWithRange&) (/usr/lib64/libclangParse.so.5.0+0x3e57896275)
#​40 0x0000003e57895ec6 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::AllowedConstructsKind, clang::SourceLocation*) (/usr/lib64/libclangParse.so.5.0+0x3e57895ec6)
#​41 0x0000003e5789afaf clang::Parser::ParseCompoundStatementBody(bool) (/usr/lib64/libclangParse.so.5.0+0x3e5789afaf)
#​42 0x0000003e5789b83b clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/usr/lib64/libclangParse.so.5.0+0x3e5789b83b)
#​43 0x0000003e578acd62 clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) (/usr/lib64/libclangParse.so.5.0+0x3e578acd62)
#​44 0x0000003e5783dec1 clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, unsigned int, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/usr/lib64/libclangParse.so.5.0+0x3e5783dec1)
#​45 0x0000003e578ac3bb clang::Parser::ParseDeclOrFunctionDefInternal(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/usr/lib64/libclangParse.so.5.0+0x3e578ac3bb)
#​46 0x0000003e578abf07 clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/usr/lib64/libclangParse.so.5.0+0x3e578abf07)
#​47 0x0000003e578ab52c clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec*) (/usr/lib64/libclangParse.so.5.0+0x3e578ab52c)
#​48 0x0000003e578aa933 clang::Parser::ParseTopLevelDecl(clang::OpaquePtrclang::DeclGroupRef&) (/usr/lib64/libclangParse.so.5.0+0x3e578aa933)
#​49 0x0000003e5782df92 clang::ParseAST(clang::Sema&, bool, bool) (/usr/lib64/libclangParse.so.5.0+0x3e5782df92)
#​50 0x0000003e560aedf7 clang::FrontendAction::Execute() (/usr/lib64/libclangFrontend.so.5.0+0x3e560aedf7)
#​51 0x0000003e5607b85a clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/usr/lib64/libclangFrontend.so.5.0+0x3e5607b85a)
#​52 0x0000003e5b406227 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/usr/lib64/libclangFrontendTool.so.5.0+0x3e5b406227)
#​53 0x000000000041115f cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/usr/bin/clang-5.0+0x41115f)
#​54 0x000000000040f20a main (/usr/bin/clang-5.0+0x40f20a)
#​55 0x0000003b29e20ff3 __libc_start_main (/lib64/libc.so.6+0x3b29e20ff3)
#​56 0x000000000040cfba _start (/usr/bin/clang-5.0+0x40cfba)
Stack dump:
0. Program arguments: /usr/bin/clang-5.0 -cc1 -triple x86_64-unknown-linux-gnu -emit-llvm-bc -flto -flto-unit -disable-free -main-file-name sparql_parser.c -mrelocation-model pic -pic-level 2 -mthread-model posix -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -momit-leaf-frame-pointer -dwarf-column-info -debug-info-kind=limited -dwarf-version=4 -debugger-tuning=gdb -coverage-notes-file /home/bero/abf/rasqal/BUILD/rasqal-0.9.33/src/.libs/sparql_parser.gcno -resource-dir /usr/lib64/clang/5.0.0 -D HAVE_CONFIG_H -I . -D RASQAL_INTERNAL=1 -I /usr/include/raptor2 -I /usr/include/uuid -D _FORTIFY_SOURCE=2 -D SV_CONFIG -I ../libsv -D MTWIST_CONFIG -I ../libmtwist -D _FORTIFY_SOURCE=2 -D PIC -internal-isystem /usr/local/include -internal-isystem /usr/lib64/clang/5.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -Os -Wstrict-aliasing=2 -Wformat -Werror=format-security -Wstrict-aliasing=2 -Wformat -Werror=format-security -fdebug-compilation-dir /home/bero/abf/rasqal/BUILD/rasqal-0.9.33/src -ferror-limit 19 -fmessage-length 0 -stack-protector 1 -stack-protector-buffer-size 4 -stack-protector-buffer-size 4 -fobjc-runtime=gcc -fdiagnostics-show-option -vectorize-loops -vectorize-slp -o .libs/sparql_parser.o -x c sparql_parser.c

1.  sparql_parser.c:3728:3 <Spelling=sparql_parser.c:526:64>: current parser token ')'
   

2.  sparql_parser.c:3522:1: parsing function body 'sparql_parser_parse'
   

3.  sparql_parser.c:3522:1: in compound statement ('{}')
   

clang-5.0: error: unable to execute command: Aborted (core dumped)

[llvmbot]

preprocessed source from rasqal

[llvmbot]

reproducer script from rasqal

[llvmbot]

Both reproducers indeed reduce to the same fragment that, by itself, is enough to make clang crash with the assertion:

_Pragma("GCC diagnostic ignored "-Wmaybe-uninitialized"")
_Pragma("GCC diagnostic pop")

[llvmbot]

Context in real world code (AKA "why would anyone do this?"):

/* Suppress an incorrect diagnostic about yylval being uninitialized. */

define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN \

_Pragma ("GCC diagnostic push") \
_Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")\
_Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")

define YY_IGNORE_MAYBE_UNINITIALIZED_END \

_Pragma ("GCC diagnostic pop")

[zmodem]

Both reproducers indeed reduce to the same fragment that, by itself, is
enough to make clang crash with the assertion:

_Pragma("GCC diagnostic ignored "-Wmaybe-uninitialized"")
_Pragma("GCC diagnostic pop")

When I try this with trunk and 5.0 I just get:

tmp/a.cc:1:1: warning: unknown warning group '-Wmaybe-uninitialized', ignored [-Wunknown-warning-option]
_Pragma("GCC diagnostic ignored "-Wmaybe-uninitialized"")
^
:2:25: note: expanded from here
GCC diagnostic ignored "-Wmaybe-uninitialized"
^
/tmp/a.cc:2:1: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
_Pragma("GCC diagnostic pop")
^
:3:17: note: expanded from here
GCC diagnostic pop
^
2 warnings generated.

Do I have to do something else to repro, or has this been fixed?

[llvmbot]

This has been fixed - works as expected in rev 310074.

[zmodem]

mentioned in issue #33196