Clang crash on deduced type with typo correction (original) (raw)

namespace a { template class c { c(b); b e; class d { void f() { auto x = a::c(cores); for (auto core : a::c(cores)) { } } }; }; } // namespace a

is a reproducer for clang with -std=c++17.
Assertion that fires and the stack trace:

$ clang -xc++ -fsyntax-only test_it.cc -std=c++17 test_it.cc:7:21: error: use of undeclared identifier 'cores' auto x = a::c(cores); ^ 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: clang-14 -xc++ -c -Xclang -ast-dump test_it.cc -std=c++17 -Xclang -fno-recovery-ast

  1.  test_it.cc:8:37: current parser token '{'
  2.  test_it.cc:1:1: parsing namespace 'a'
  3.  test_it.cc:2:23: parsing struct/union/class body 'a::c'
  4.  test_it.cc:6:14: parsing function body 'a::c::d::f'
  5.  test_it.cc:6:14: in compound statement ('{}')

#0 0x00007ffa34aa2671 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0xea2671) #1 0x00007ffa34aa03ce llvm::sys::RunSignalHandlers() (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0xea03ce) #2 0x00007ffa34aa1a3b llvm::sys::CleanupOnSignal(unsigned long) (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0xea1a3b) #3 0x00007ffa349c98ef (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0xdc98ef) #4 0x00007ffa3343daa0 (/lib/x86_64-linux-gnu/libc.so.6+0x3daa0) #5 0x00007ffa3b114d83 clang::ASTContext::getTypeInfoImpl(clang::Type const*) const (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xb14d83) #6 0x00007ffa3b115cf6 clang::ASTContext::getTypeInfo(clang::Type const*) const (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xb15cf6) #7 0x00007ffa3b114d8e clang::ASTContext::getTypeInfoImpl(clang::Type const*) const (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xb14d8e) #8 0x00007ffa3b115cf6 clang::ASTContext::getTypeInfo(clang::Type const*) const (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xb15cf6) #9 0x00007ffa3b1159b9 clang::ASTContext::getTypeInfoInChars(clang::QualType) const (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xb159b9) #10 0x00007ffa3b4607c4 (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xe607c4) #11 0x00007ffa3b45cd76 (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xe5cd76) #12 0x00007ffa3b45821d clang::ASTContext::getASTRecordLayout(clang::RecordDecl const*) const (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xe5821d) #13 0x00007ffa3b114e6c clang::ASTContext::getTypeInfoImpl(clang::Type const*) const (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xb14e6c) #14 0x00007ffa3b115cf6 clang::ASTContext::getTypeInfo(clang::Type const*) const (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xb15cf6) #15 0x00007ffa3b1163e3 clang::ASTContext::getTypeAlignInChars(clang::QualType) const (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xb163e3) #16 0x00007ffa3b7e2eaa clang::Sema::CheckArgAlignment(clang::SourceLocation, clang::NamedDecl*, llvm::StringRef, clang::QualType, clang::QualType) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x11e2eaa) #17 0x00007ffa3b7e4b5f clang::Sema::CheckConstructorCall(clang::FunctionDecl*, clang::QualType, llvm::ArrayRef<clang::Expr const*>, clang::FunctionProtoType const*, clang::SourceLocation) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x11e4b5f) #18 0x00007ffa3b964d72 clang::Sema::CompleteConstructorCall(clang::CXXConstructorDecl*, clang::QualType, llvm::MutableArrayRefclang::Expr*, clang::SourceLocation, llvm::SmallVectorImplclang::Expr*&, bool, bool) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x1364d72) #19 0x00007ffa3bb6a075 (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x156a075) #20 0x00007ffa3bb66534 clang::InitializationSequence::Perform(clang::Sema&, clang::InitializedEntity const&, clang::InitializationKind const&, llvm::MutableArrayRefclang::Expr*, clang::QualType*) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x1566534) #21 0x00007ffa3b7cd53d (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x11cd53d) #22 0x00007ffa3b7c8d28 (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x11c8d28) #23 0x00007ffa3b7c8e2a clang::Sema::BuildCXXFunctionalCastExpr(clang::TypeSourceInfo*, clang::QualType, clang::SourceLocation, clang::Expr*, clang::SourceLocation) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x11c8e2a) #24 0x00007ffa3bab9b8d clang::Sema::BuildCXXTypeConstructExpr(clang::TypeSourceInfo*, clang::SourceLocation, llvm::MutableArrayRefclang::Expr*, clang::SourceLocation, bool) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x14b9b8d) #25 0x00007ffa3badc185 (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x14dc185) #26 0x00007ffa3bad4f88 (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x14d4f88) #27 0x00007ffa3bab9e25 clang::Sema::CorrectDelayedTyposInExpr(clang::Expr*, clang::VarDecl*, bool, llvm::function_ref<clang::ActionResult<clang::Expr*, true> (clang::Expr*)>) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x14b9e25) #28 0x00007ffa3b0d6a4b clang::Parser::ParseForStatement(clang::SourceLocation*) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xad6a4b) #29 0x00007ffa3b0d1910 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributesWithRange&) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xad1910) #30 0x00007ffa3b0d0eef clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xad0eef) #31 0x00007ffa3b0d9841 clang::Parser::ParseCompoundStatementBody(bool) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xad9841) #32 0x00007ffa3b0da768 clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xada768) #33 0x00007ffa3b0387d1 clang::Parser::ParseLexedMethodDef(clang::Parser::LexedMethod&) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xa387d1) #34 0x00007ffa3b03729a clang::Parser::ParseLexedMethodDefs(clang::Parser::ParsingClass&) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xa3729a) #35 0x00007ffa3b03729a clang::Parser::ParseLexedMethodDefs(clang::Parser::ParsingClass&) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xa3729a) #36 0x00007ffa3b06a56b clang::Parser::ParseCXXMemberSpecification(clang::SourceLocation, clang::SourceLocation, clang::ParsedAttributesWithRange&, unsigned int, clang::Decl*) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xa6a56b) #37 0x00007ffa3b067c26 clang::Parser::ParseClassSpecifier(clang::tok::TokenKind, clang::SourceLocation, clang::DeclSpec&, clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier, bool, clang::Parser::DeclSpecContext, clang::ParsedAttributesWithRange&) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xa67c26) #38 0x00007ffa3b0477a4 clang::Parser::ParseDeclarationSpecifiers(clang::DeclSpec&, clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier, clang::Parser::DeclSpecContext, clang::Parser::LateParsedAttrList*) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xa477a4) #39 0x00007ffa3b0e221a clang::Parser::ParseSingleDeclarationAfterTemplate(clang::DeclaratorContext, clang::Parser::ParsedTemplateInfo const&, clang::ParsingDeclRAIIObject&, clang::SourceLocation&, clang::ParsedAttributes&, clang::AccessSpecifier) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xae221a) #40 0x00007ffa3b0e14fd clang::Parser::ParseTemplateDeclarationOrSpecialization(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::AccessSpecifier) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xae14fd) #41 0x00007ffa3b0e0e4f clang::Parser::ParseDeclarationStartingWithTemplate(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::AccessSpecifier) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xae0e4f) #42 0x00007ffa3b04669b clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributesWithRange&, clang::SourceLocation*) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xa4669b) #43 0x00007ffa3b0f1bc4 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributesWithRange&, clang::ParsingDeclSpec*) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xaf1bc4) #44 0x00007ffa3b060c0c clang::Parser::ParseInnerNamespace(llvm::SmallVector<clang::Parser::InnerNamespaceInfo, 4u> const&, unsigned int, clang::SourceLocation&, clang::ParsedAttributes&, clang::BalancedDelimiterTracker&) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xa60c0c) #45 0x00007ffa3b060759 clang::Parser::ParseNamespace(clang::DeclaratorContext, clang::SourceLocation&, clang::SourceLocation) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xa60759) #46 0x00007ffa3b0467de clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributesWithRange&, clang::SourceLocation*) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xa467de) #47 0x00007ffa3b0f1bc4 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributesWithRange&, clang::ParsingDeclSpec*) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xaf1bc4) #48 0x00007ffa3b0f0a6d clang::Parser::ParseTopLevelDecl(clang::OpaquePtrclang::DeclGroupRef&, bool) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xaf0a6d) #49 0x00007ffa3b0f05d7 clang::Parser::ParseFirstTopLevelDecl(clang::OpaquePtrclang::DeclGroupRef&) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xaf05d7) #50 0x00007ffa3b033726 clang::ParseAST(clang::Sema&, bool, bool) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xa33726) #51 0x00007ffa3cb44ac7 clang::FrontendAction::Execute() (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x2544ac7) #52 0x00007ffa3ca9c316 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x249c316) #53 0x00007ffa3cbbe43b clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x25be43b) #54 0x0000000000413edb cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/usr/lib/llvm-14/bin/clang+0x413edb) #55 0x000000000041210c (/usr/lib/llvm-14/bin/clang+0x41210c) #56 0x00007ffa3c71ab92 (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x211ab92) #57 0x00007ffa349c965d llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0xdc965d) #58 0x00007ffa3c71a680 clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optionalllvm::StringRef >, std::__cxx11::basic_string<char, std::char_traits, std::allocator >, bool) const (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x211a680) #59 0x00007ffa3c6e4e83 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&) const (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x20e4e83) #60 0x00007ffa3c6e510a clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&) const (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x20e510a) #61 0x00007ffa3c6ff1c7 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x20ff1c7) #62 0x0000000000411b76 main (/usr/lib/llvm-14/bin/clang+0x411b76) #63 0x00007ffa3342920a __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16 #64 0x00007ffa334292bc call_init ./csu/../csu/libc-start.c:128:20 #65 0x00007ffa334292bc __libc_start_main ./csu/../csu/libc-start.c:376:5 #66 0x000000000040f00a _start (/usr/lib/llvm-14/bin/clang+0x40f00a)