[clang++] Frontend Assertion Failure in clang::SourceManager::getDecomposedLoc #110326
Description
Hello there, clang++ crashes at an assertion failure on the following invalid test case:
a() { b a1 ( c < ( ( ( {
(((c}))),d<>>Removing some of the whitespace in this test case causes the crash to be unreproducible.
Tested version(s): 11.0.0 ~ 19.1.0, trunk.
Example: https://godbolt.org/z/1b7KxjEsv
Stack dump:
clang++: /root/llvm-project/clang/lib/Basic/SourceManager.cpp:866: clang::FileID clang::SourceManager::getFileIDLoaded(clang::SourceLocation::UIntTy) const: Assertion `0 && "Invalid SLocOffset or bad function choice"' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/clang++ -gdwarf-4 -g -o /app/output.s -mllvm --x86-asm-syntax=intel -fno-verbose-asm -S --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics -fno-crash-diagnostics -emit-llvm -O3 <source>
1. <source>:2:10: at annotation token
2. <source>:1:5: parsing function body 'a'
3. <source>:1:5: in compound statement ('{}')
4. <source>:1:42: in compound statement ('{}')
#0 0x0000000003b86708 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3b86708)
#1 0x0000000003b843cc llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3b843cc)
#2 0x0000000003ad2b58 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x0000721390442520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007213904969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x0000721390442476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x00007213904287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x000072139042871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
#8 0x0000721390439e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#9 0x0000000003dd10f3 (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3dd10f3)
#10 0x0000000003dd8dca (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3dd8dca)
#11 0x0000000003dd91fa clang::SourceManager::getDecomposedLoc(clang::SourceLocation) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3dd91fa)
#12 0x0000000007f241f0 clang::Lexer::getRawToken(clang::SourceLocation, clang::Token&, clang::SourceManager const&, clang::LangOptions const&, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7f241f0)
#13 0x0000000007f24bf9 makeRangeFromFileLocs(clang::CharSourceRange, clang::SourceManager const&, clang::LangOptions const&) (.isra.0) Lexer.cpp:0:0
#14 0x0000000007f24e03 clang::Lexer::makeFileCharRange(clang::CharSourceRange, clang::SourceManager const&, clang::LangOptions const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7f24e03)
#15 0x0000000007735159 clang::edit::Commit::remove(clang::CharSourceRange) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7735159)
#16 0x00000000048670fe clang::DiagnosticRenderer::emitDiagnostic(clang::FullSourceLoc, clang::DiagnosticsEngine::Level, llvm::StringRef, llvm::ArrayRef<clang::CharSourceRange>, llvm::ArrayRef<clang::FixItHint>, llvm::PointerUnion<clang::Diagnostic const*, clang::StoredDiagnostic const*>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x48670fe)
#17 0x00000000047f09ad clang::TextDiagnosticPrinter::HandleDiagnostic(clang::DiagnosticsEngine::Level, clang::Diagnostic const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x47f09ad)
#18 0x0000000003dbc3db clang::DiagnosticIDs::EmitDiag(clang::DiagnosticsEngine&, clang::DiagnosticBuilder const&, clang::DiagnosticIDs::Level) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3dbc3db)
#19 0x0000000003dbc9a3 clang::DiagnosticIDs::ProcessDiag(clang::DiagnosticsEngine&, clang::DiagnosticBuilder const&) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3dbc9a3)
#20 0x0000000003daffdf clang::DiagnosticsEngine::EmitDiagnostic(clang::DiagnosticBuilder const&, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3daffdf)
#21 0x0000000000ccc853 clang::DiagnosticBuilder::~DiagnosticBuilder() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xccc853)
#22 0x0000000006694061 clang::Parser::ParseUnqualifiedId(clang::CXXScopeSpec&, clang::OpaquePtr<clang::QualType>, bool, bool, bool, bool, bool, clang::SourceLocation*, clang::UnqualifiedId&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6694061)
#23 0x0000000006694525 clang::Parser::tryParseCXXIdExpression(clang::CXXScopeSpec&, bool, clang::Token&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6694525)
#24 0x000000000669482a clang::Parser::ParseCXXIdExpression(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x669482a)
#25 0x000000000667755a clang::Parser::ParseCastExpression(clang::Parser::CastParseKind, bool, bool&, clang::Parser::TypeCastState, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x667755a)
#26 0x0000000006678c07 clang::Parser::ParseCastExpression(clang::Parser::CastParseKind, bool, clang::Parser::TypeCastState, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6678c07)
#27 0x0000000006678c99 clang::Parser::ParseAssignmentExpression(clang::Parser::TypeCastState) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6678c99)
#28 0x000000000667aa9d clang::Parser::ParseRHSOfBinaryExpression(clang::ActionResult<clang::Expr*, true>, clang::prec::Level) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x667aa9d)
#29 0x00000000066ff699 clang::Parser::ParseExprStatement(clang::Parser::ParsedStmtContext) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66ff699)
#30 0x00000000066f62fc clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66f62fc)
#31 0x00000000066f7210 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66f7210)
#32 0x00000000066f80e5 clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66f80e5)
#33 0x00000000066f994a clang::Parser::ParseCompoundStatement(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66f994a)
#34 0x0000000006681e8a clang::Parser::ParseParenExpression(clang::Parser::ParenParseOption&, bool, bool, clang::OpaquePtr<clang::QualType>&, clang::SourceLocation&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6681e8a)
#35 0x0000000006677961 clang::Parser::ParseCastExpression(clang::Parser::CastParseKind, bool, bool&, clang::Parser::TypeCastState, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6677961)
#36 0x0000000006678c07 clang::Parser::ParseCastExpression(clang::Parser::CastParseKind, bool, clang::Parser::TypeCastState, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6678c07)
#37 0x0000000006678c99 clang::Parser::ParseAssignmentExpression(clang::Parser::TypeCastState) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6678c99)
#38 0x000000000667d6b9 clang::Parser::ParseExpression(clang::Parser::TypeCastState) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x667d6b9)
#39 0x00000000066819ed clang::Parser::ParseParenExpression(clang::Parser::ParenParseOption&, bool, bool, clang::OpaquePtr<clang::QualType>&, clang::SourceLocation&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66819ed)
#40 0x0000000006677961 clang::Parser::ParseCastExpression(clang::Parser::CastParseKind, bool, bool&, clang::Parser::TypeCastState, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6677961)
#41 0x0000000006678c07 clang::Parser::ParseCastExpression(clang::Parser::CastParseKind, bool, clang::Parser::TypeCastState, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6678c07)
#42 0x0000000006678c99 clang::Parser::ParseAssignmentExpression(clang::Parser::TypeCastState) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6678c99)
#43 0x000000000667d6b9 clang::Parser::ParseExpression(clang::Parser::TypeCastState) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x667d6b9)
#44 0x00000000066819ed clang::Parser::ParseParenExpression(clang::Parser::ParenParseOption&, bool, bool, clang::OpaquePtr<clang::QualType>&, clang::SourceLocation&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66819ed)
#45 0x0000000006677961 clang::Parser::ParseCastExpression(clang::Parser::CastParseKind, bool, bool&, clang::Parser::TypeCastState, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6677961)
#46 0x000000000668469e clang::Parser::ParseConstantExpressionInExprEvalContext(clang::Parser::TypeCastState) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x668469e)
#47 0x000000000670a244 clang::Parser::ParseTemplateArgument() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x670a244)
#48 0x0000000006712207 clang::Parser::ParseTemplateArgumentList(llvm::SmallVector<clang::ParsedTemplateArgument, 16u>&, clang::OpaquePtr<clang::TemplateName>, clang::SourceLocation) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6712207)
#49 0x00000000067125b7 clang::Parser::ParseTemplateIdAfterTemplateName(bool, clang::SourceLocation&, llvm::SmallVector<clang::ParsedTemplateArgument, 16u>&, clang::SourceLocation&, clang::OpaquePtr<clang::TemplateName>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x67125b7)
#50 0x0000000006712791 clang::Parser::AnnotateTemplateIdToken(clang::OpaquePtr<clang::TemplateName>, clang::TemplateNameKind, clang::CXXScopeSpec&, clang::SourceLocation, clang::UnqualifiedId&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6712791)
#51 0x0000000006691637 clang::Parser::ParseOptionalCXXScopeSpecifier(clang::CXXScopeSpec&, clang::OpaquePtr<clang::QualType>, bool, bool, bool*, bool, clang::IdentifierInfo const**, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6691637)
#52 0x00000000065ffaca clang::Parser::TryAnnotateCXXScopeToken(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x65ffaca)
#53 0x00000000066456b4 clang::Parser::ParseDeclarationSpecifiers(clang::DeclSpec&, clang::Parser::ParsedTemplateInfo&, clang::AccessSpecifier, clang::Parser::DeclSpecContext, clang::Parser::LateParsedAttrList*, clang::ImplicitTypenameContext) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66456b4)
#54 0x000000000664a85f clang::Parser::ParseParameterDeclarationClause(clang::DeclaratorContext, clang::ParsedAttributes&, llvm::SmallVectorImpl<clang::DeclaratorChunk::ParamInfo>&, clang::SourceLocation&, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x664a85f)
#55 0x000000000664bd08 clang::Parser::ParseFunctionDeclarator(clang::Declarator&, clang::ParsedAttributes&, clang::BalancedDelimiterTracker&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x664bd08)
#56 0x0000000006650e1f clang::Parser::ParseDirectDeclarator(clang::Declarator&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6650e1f)
#57 0x000000000663dd06 clang::Parser::ParseDeclaratorInternal(clang::Declarator&, void (clang::Parser::*)(clang::Declarator&)) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x663dd06)
#58 0x0000000006771941 clang::Sema::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6771941)
#59 0x0000000006640d57 clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::ParsedAttributes&, clang::Parser::ParsedTemplateInfo&, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6640d57)
#60 0x0000000006649da7 clang::Parser::ParseSimpleDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::ParsedAttributes&, bool, clang::Parser::ForRangeInit*, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6649da7)
#61 0x000000000664a269 clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x664a269)
#62 0x00000000066f64e2 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66f64e2)
#63 0x00000000066f7210 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66f7210)
#64 0x00000000066f80e5 clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66f80e5)
#65 0x00000000066f983a clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66f983a)
#66 0x000000000660c643 clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x660c643)
#67 0x0000000006641e6d clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::ParsedAttributes&, clang::Parser::ParsedTemplateInfo&, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6641e6d)
#68 0x000000000660038e clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x660038e)
#69 0x0000000006600b4e clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6600b4e)
#70 0x00000000066082e3 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66082e3)
#71 0x00000000066091cd clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66091cd)
#72 0x0000000006609670 clang::Parser::ParseFirstTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6609670)
#73 0x00000000065fb6b2 clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x65fb6b2)
#74 0x00000000044dd0c8 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x44dd0c8)
#75 0x0000000004796d49 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4796d49)
#76 0x00000000047155ce clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x47155ce)
#77 0x000000000487c86e clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x487c86e)
#78 0x0000000000cceeff cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xcceeff)
#79 0x0000000000cc6c0a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#80 0x0000000004521349 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const::'lambda'()>(long) Job.cpp:0:0
#81 0x0000000003ad3004 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3ad3004)
#82 0x000000000452193f clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const (.part.0) Job.cpp:0:0
#83 0x00000000044e6ccd clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x44e6ccd)
#84 0x00000000044e7dbd clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x44e7dbd)
#85 0x00000000044efa75 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x44efa75)
#86 0x0000000000ccbdcf clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xccbdcf)
#87 0x0000000000b9b7f4 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xb9b7f4)
#88 0x0000721390429d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#89 0x0000721390429e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#90 0x0000000000cc66be _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xcc66be)
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134
The test case was generated by a fuzzer.