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[clang][C++ modules] crash of clang #117440

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Arthapz opened this issue Nov 23, 2024 · 2 comments
Open

[clang][C++ modules] crash of clang #117440

Arthapz opened this issue Nov 23, 2024 · 2 comments
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clang:modules C++20 modules and Clang Header Modules crash Prefer [crash-on-valid] or [crash-on-invalid]

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@Arthapz
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Arthapz commented Nov 23, 2024 •
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Hello, i noticed that clangd was constantly crashing with --experimental-modules-support on one of my project
after recompiled llvm in debug mode, my project doesn't compile anymore and clang crash when parsing a specific module (100% of the time, while in with clang in release mode, the crash only occurs sometimes), i don't know if clangd crashing is related to this issues (it was something wrong about AST deserialisation) but here the repro and the scanner

❯ /opt/llvm-git/bin/clang --version
clang version 20.0.0 (/home/arthapz/AUR/llvm-git/llvm-project d121d71fc7fcb8c969959147f5f58b31f9c6b251)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /opt/llvm-git/bin
Build config: +unoptimized, +assertions

https://github.com/Arthapz/clang-crash-modules-117440

❯ xmake b -v
[ 38%]: <foo> compiling.module.release DynamicLoader:Base
/opt/llvm-git/bin/clang -c -Qunused-arguments -m64 -std=c++26 -stdlib=libc++ -cxx-isystem/opt/llvm-git/include/c++/v1 -fmodule-file=Pimpl=build/.gens/foo/linux/x86_64/release/rules/bmi/cache/modules/3319d13e/Pimpl.pcm -fmodule-file=std=build/.gens/foo/li
error: clang-20: /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/AST/DeclCXX.h:2610: void clang::CXXConstructorDecl::setExplicitSpecifier(ExplicitSpecifier): Assertion `(!ES.getExpr() || CXXConstructorDeclBits.HasTrailingExplicitSpecifier
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/llvm-git/bin/clang-20 -cc1 -triple x86_64-pc-linux-gnu -emit-module-interface -disable-free -clear-ast-before-backend -main-file-name DynamicLoader-Base.mpp -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=a
1.      src/DynamicLoader-Base.mpp:46:40: current parser token ';'
2.      src/DynamicLoader-Base.mpp:7:8: parsing namespace 'stormkit'
3.      src/DynamicLoader-Base.mpp:7:36: parsing namespace 'stormkit::core'
4.      src/DynamicLoader-Base.mpp:8:5: parsing struct/union/class body 'stormkit::DynamicLoader'
5.      /home/arthapz/Repos/qkdmqlksdlmqkdq/src/Pimpl.mpp:10:11: instantiating class definition 'stormkit::Pimpl<stormkit::DynamicLoader::DynamicLoaderImpl>'
 #0 0x00007782da8c8961 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/lib/Support/Unix/Signals.inc:723:11
 #1 0x00007782da8c8f6f PrintStackTraceSignalHandler(void*) /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/lib/Support/Unix/Signals.inc:798:1
 #2 0x00007782da8c6bc7 llvm::sys::RunSignalHandlers() /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/lib/Support/Signals.cpp:105:5
 #3 0x00007782da8c9735 SignalHandler(int) /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/lib/Support/Unix/Signals.inc:413:1
 #4 0x00007782d8e4c1d0 (/usr/lib/libc.so.6+0x3d1d0)
 #5 0x00007782d8ea53f4 (/usr/lib/libc.so.6+0x963f4)
 #6 0x00007782d8e4c120 raise (/usr/lib/libc.so.6+0x3d120)
 #7 0x00007782d8e334c3 abort (/usr/lib/libc.so.6+0x244c3)
 #8 0x00007782d8e333df (/usr/lib/libc.so.6+0x243df)
 #9 0x00007782d8e44177 (/usr/lib/libc.so.6+0x35177)
#10 0x00007782e4d64269 clang::CXXConstructorDecl::setExplicitSpecifier(clang::ExplicitSpecifier) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/AST/DeclCXX.h:2611:12
#11 0x00007782e907130b clang::ASTDeclReader::VisitCXXConstructorDecl(clang::CXXConstructorDecl*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:2320:7
#12 0x00007782e90a231c clang::declvisitor::Base<std::add_pointer, clang::ASTDeclReader, void>::Visit(clang::Decl*) /home/arthapz/AUR/llvm-git/src/llvm-project-build/tools/clang/include/clang/AST/DeclNodes.inc:258:1
#13 0x00007782e9063b38 clang::ASTDeclReader::Visit(clang::Decl*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:550:37
#14 0x00007782e90a177f clang::ASTReader::ReadDeclRecord(clang::GlobalDeclID)::$_1::operator()() const /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:4180:63
#15 0x00007782e90a1759 void llvm::function_ref<void ()>::callback_fn<clang::ASTReader::ReadDeclRecord(clang::GlobalDeclID)::$_1>(long) /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:46:5
#16 0x00007782e433cd9d llvm::function_ref<void ()>::operator()() const /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:69:5
#17 0x00007782e433d06e clang::runWithSufficientStackSpace(llvm::function_ref<void ()>, llvm::function_ref<void ()>) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/Basic/Stack.h:52:3
#18 0x00007782e433ce19 clang::StackExhaustionHandler::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Basic/StackExhaustionHandler.cpp:21:1
#19 0x00007782e5c03a81 clang::Sema::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Sema/Sema.cpp:565:1
#20 0x00007782e8fbf89f clang::ASTReader::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReader.cpp:9664:5
#21 0x00007782e909bb55 clang::ASTReader::ReadDeclRecord(clang::GlobalDeclID) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:4184:40
#22 0x00007782e8faf5eb clang::ASTReader::GetDecl(clang::GlobalDeclID) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReader.cpp:7977:5
#23 0x00007782e90352d6 clang::NamedDecl* clang::ASTReader::ReadDeclAs<clang::NamedDecl>(clang::serialization::ModuleFile&, llvm::SmallVectorImpl<unsigned long> const&, unsigned int&) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/Seriali
#24 0x00007782e8fde61c clang::NamedDecl* clang::ASTRecordReader::readDeclAs<clang::NamedDecl>() /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/Serialization/ASTRecordReader.h:203:5
#25 0x00007782e90a35dd clang::NamedDecl* clang::ASTDeclReader::readDeclAs<clang::NamedDecl>() /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:197:43
#26 0x00007782e9071980 clang::ASTDeclReader::VisitTemplateDecl(clang::TemplateDecl*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:2398:11
#27 0x00007782e9071eac clang::ASTDeclReader::VisitRedeclarableTemplateDecl(clang::RedeclarableTemplateDecl*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:2446:3
#28 0x00007782e90727ab clang::ASTDeclReader::VisitFunctionTemplateDecl(clang::FunctionTemplateDecl*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:2584:31
#29 0x00007782e90a256e clang::declvisitor::Base<std::add_pointer, clang::ASTDeclReader, void>::Visit(clang::Decl*) /home/arthapz/AUR/llvm-git/src/llvm-project-build/tools/clang/include/clang/AST/DeclNodes.inc:518:1
#30 0x00007782e9063b38 clang::ASTDeclReader::Visit(clang::Decl*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:550:37
#31 0x00007782e90a177f clang::ASTReader::ReadDeclRecord(clang::GlobalDeclID)::$_1::operator()() const /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:4180:63
#32 0x00007782e90a1759 void llvm::function_ref<void ()>::callback_fn<clang::ASTReader::ReadDeclRecord(clang::GlobalDeclID)::$_1>(long) /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:46:5
#33 0x00007782e433cd9d llvm::function_ref<void ()>::operator()() const /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:69:5
#34 0x00007782e433d06e clang::runWithSufficientStackSpace(llvm::function_ref<void ()>, llvm::function_ref<void ()>) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/Basic/Stack.h:52:3
#35 0x00007782e433ce19 clang::StackExhaustionHandler::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Basic/StackExhaustionHandler.cpp:21:1
#36 0x00007782e5c03a81 clang::Sema::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Sema/Sema.cpp:565:1
#37 0x00007782e8fbf89f clang::ASTReader::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReader.cpp:9664:5
#38 0x00007782e909bb55 clang::ASTReader::ReadDeclRecord(clang::GlobalDeclID) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:4184:40
#39 0x00007782e8faf5eb clang::ASTReader::GetDecl(clang::GlobalDeclID) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReader.cpp:7977:5
#40 0x00007782e8fe3856 clang::ASTReader::ReadDecl(clang::serialization::ModuleFile&, llvm::SmallVectorImpl<unsigned long> const&, unsigned int&) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/Serialization/ASTReader.h:2045:5
#41 0x00007782e909ea4c clang::ASTReader::loadPendingDeclChain(clang::Decl*, unsigned long) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:4420:15
#42 0x00007782e8fc0ab2 clang::ASTReader::finishPendingActions() /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReader.cpp:9871:57
#43 0x00007782e8fc3e7a clang::ASTReader::FinishedDeserializing() /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReader.cpp:0:5
#44 0x00007782e4d19fb0 clang::ExternalASTSource::Deserializing::~Deserializing() /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/AST/ExternalASTSource.h:89:5
#45 0x00007782e4d3e5d4 clang::DeclContext::LoadLexicalDeclsFromExternalStorage() const /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/AST/DeclBase.cpp:1590:1
#46 0x00007782e4d3e9c0 clang::DeclContext::decls_begin() const /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/AST/DeclBase.cpp:0:5
#47 0x00007782e4667bea clang::DeclContext::decls() const /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/AST/DeclBase.h:2353:48
#48 0x00007782e6abda4e clang::Sema::InstantiateClass(clang::SourceLocation, clang::CXXRecordDecl*, clang::CXXRecordDecl*, clang::MultiLevelTemplateArgumentList const&, clang::TemplateSpecializationKind, bool) /home/arthapz/AUR/llvm-git/src/llvm-project/c
#49 0x00007782e6abf5d7 clang::Sema::InstantiateClassTemplateSpecialization(clang::SourceLocation, clang::ClassTemplateSpecializationDecl*, clang::TemplateSpecializationKind, bool) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Sema/SemaTemplateIns
#50 0x00007782e6cb0f83 clang::Sema::RequireCompleteTypeImpl(clang::SourceLocation, clang::QualType, clang::Sema::CompleteTypeKind, clang::Sema::TypeDiagnoser*)::$_0::operator()() const /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Sema/SemaType.c
#51 0x00007782e6cb0f29 void llvm::function_ref<void ()>::callback_fn<clang::Sema::RequireCompleteTypeImpl(clang::SourceLocation, clang::QualType, clang::Sema::CompleteTypeKind, clang::Sema::TypeDiagnoser*)::$_0>(long) /home/arthapz/AUR/llvm-git/src/llvm-
#52 0x00007782e433cd9d llvm::function_ref<void ()>::operator()() const /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:69:5
#53 0x00007782e433d06e clang::runWithSufficientStackSpace(llvm::function_ref<void ()>, llvm::function_ref<void ()>) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/Basic/Stack.h:52:3
#54 0x00007782e433ce19 clang::StackExhaustionHandler::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Basic/StackExhaustionHandler.cpp:21:1
#55 0x00007782e5c03a81 clang::Sema::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Sema/Sema.cpp:565:1
#56 0x00007782e6c8c54b clang::Sema::RequireCompleteTypeImpl(clang::SourceLocation, clang::QualType, clang::Sema::CompleteTypeKind, clang::Sema::TypeDiagnoser*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Sema/SemaType.cpp:9335:22
#57 0x00007782e6c8bd04 clang::Sema::RequireCompleteType(clang::SourceLocation, clang::QualType, clang::Sema::CompleteTypeKind, clang::Sema::TypeDiagnoser&) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Sema/SemaType.cpp:9056:7
#58 0x00007782e5f4c483 bool clang::Sema::RequireCompleteSizedType<>(clang::SourceLocation, clang::QualType, unsigned int) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/Sema/Sema.h:7829:12
#59 0x00007782e5f23df7 clang::Sema::CheckFieldDecl(clang::DeclarationName, clang::QualType, clang::TypeSourceInfo*, clang::RecordDecl*, clang::SourceLocation, bool, clang::Expr*, clang::InClassInitStyle, clang::SourceLocation, clang::AccessSpecifier, cla
#60 0x00007782e5f23ac5 clang::Sema::HandleField(clang::Scope*, clang::RecordDecl*, clang::SourceLocation, clang::Declarator&, clang::Expr*, clang::InClassInitStyle, clang::AccessSpecifier) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Sema/SemaDe
#61 0x00007782e5fdf452 clang::Sema::ActOnCXXMemberDeclarator(clang::Scope*, clang::AccessSpecifier, clang::Declarator&, llvm::MutableArrayRef<clang::TemplateParameterList*>, clang::Expr*, clang::VirtSpecifiers const&, clang::InClassInitStyle) /home/artha
#62 0x00007782e4682a59 clang::Parser::ParseCXXClassMemberDeclaration(clang::AccessSpecifier, clang::ParsedAttributes&, clang::Parser::ParsedTemplateInfo&, clang::ParsingDeclRAIIObject*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseDec
#63 0x00007782e46846f6 clang::Parser::ParseCXXClassMemberDeclarationWithPragmas(clang::AccessSpecifier&, clang::ParsedAttributes&, clang::TypeSpecifierType, clang::Decl*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseDeclCXX.cpp:3742:1
#64 0x00007782e467e715 clang::Parser::ParseCXXMemberSpecification(clang::SourceLocation, clang::SourceLocation, clang::ParsedAttributes&, unsigned int, clang::Decl*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseDeclCXX.cpp:3946:7
#65 0x00007782e467c8ea clang::Parser::ParseClassSpecifier(clang::tok::TokenKind, clang::SourceLocation, clang::DeclSpec&, clang::Parser::ParsedTemplateInfo&, clang::AccessSpecifier, bool, clang::Parser::DeclSpecContext, clang::ParsedAttributes&) /home/ar
#66 0x00007782e4642439 clang::Parser::ParseDeclarationSpecifiers(clang::DeclSpec&, clang::Parser::ParsedTemplateInfo&, clang::AccessSpecifier, clang::Parser::DeclSpecContext, clang::Parser::LateParsedAttrList*, clang::ImplicitTypenameContext) /home/artha
#67 0x00007782e4657d26 clang::Parser::ParseDeclarationSpecifiers(clang::DeclSpec&, clang::Parser::ParsedTemplateInfo&, clang::AccessSpecifier, clang::Parser::DeclSpecContext, clang::Parser::LateParsedAttrList*) /home/arthapz/AUR/llvm-git/src/llvm-project
#68 0x00007782e4787f91 clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/Parser.cpp:1153:7
#69 0x00007782e4787a1a clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/Parser.cpp:1266:12
#70 0x00007782e478711a clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/Parser.cpp:1069:14
#71 0x00007782e4673455 clang::Parser::ParseInnerNamespace(llvm::SmallVector<clang::Parser::InnerNamespaceInfo, 4u> const&, unsigned int, clang::SourceLocation&, clang::ParsedAttributes&, clang::BalancedDelimiterTracker&) /home/arthapz/AUR/llvm-git/src/ll
#72 0x00007782e4672cc1 clang::Parser::ParseNamespace(clang::DeclaratorContext, clang::SourceLocation&, clang::SourceLocation) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseDeclCXX.cpp:252:18
#73 0x00007782e4639133 clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::SourceLocation*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseDecl.cpp
#74 0x00007782e4786d66 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/Parser.cpp:1017:16
#75 0x00007782e4673455 clang::Parser::ParseInnerNamespace(llvm::SmallVector<clang::Parser::InnerNamespaceInfo, 4u> const&, unsigned int, clang::SourceLocation&, clang::ParsedAttributes&, clang::BalancedDelimiterTracker&) /home/arthapz/AUR/llvm-git/src/ll
#76 0x00007782e4672cc1 clang::Parser::ParseNamespace(clang::DeclaratorContext, clang::SourceLocation&, clang::SourceLocation) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseDeclCXX.cpp:252:18
#77 0x00007782e46392a6 clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::SourceLocation*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseDecl.cpp
#78 0x00007782e4786b76 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/Parser.cpp:985:14
#79 0x00007782e4674027 clang::Parser::ParseExportDeclaration() /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseDeclCXX.cpp:473:5
#80 0x00007782e4786b31 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/Parser.cpp:970:18
#81 0x00007782e4784be2 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/Parser.cpp:758:12
#82 0x00007782e4614fc8 clang::ParseAST(clang::Sema&, bool, bool) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseAST.cpp:171:16
#83 0x00007782e94a1f15 clang::ASTFrontendAction::ExecuteAction() /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Frontend/FrontendAction.cpp:1193:1
#84 0x00007782e94a182d clang::FrontendAction::Execute() /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Frontend/FrontendAction.cpp:1081:7
#85 0x00007782e93aeae5 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Frontend/CompilerInstance.cpp:1062:23
#86 0x00007782e95c0cee clang::ExecuteCompilerInvocation(clang::CompilerInstance*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:296:8
#87 0x000064feedc1fc20 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/tools/driver/cc1_main.cpp:286:13
#88 0x000064feedc12234 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/tools/driver/driver.cpp:218:5
#89 0x000064feedc10ed0 clang_main(int, char**, llvm::ToolContext const&) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/tools/driver/driver.cpp:259:5
#90 0x000064feedc4836e main /home/arthapz/AUR/llvm-git/src/llvm-project-build/tools/clang/tools/driver/clang-driver.cpp:17:10
#91 0x00007782d8e34e08 (/usr/lib/libc.so.6+0x25e08)
#92 0x00007782d8e34ecc __libc_start_main (/usr/lib/libc.so.6+0x25ecc)
#93 0x000064feedc108e5 _start (/opt/llvm-git/bin/clang-20+0x1a8e5)
clang: error: unable to execute command: Aborted (core dumped)
clang: error: clang frontend command failed due to signal (use -v to see invocation)
clang version 20.0.0 (/home/arthapz/AUR/llvm-git/llvm-project d121d71fc7fcb8c969959147f5f58b31f9c6b251)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /opt/llvm-git/bin
Build config: +unoptimized, +assertions
clang: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg: /tmp/DynamicLoader-Base-f419b1.cppm
clang: note: diagnostic msg: /tmp/DynamicLoader-Base-f419b1.sh
clang: note: diagnostic msg:
********************
@github-actions github-actions bot added the clang Clang issues not falling into any other category label Nov 23, 2024
@EugeneZelenko EugeneZelenko added clang:modules C++20 modules and Clang Header Modules crash Prefer [crash-on-valid] or [crash-on-invalid] and removed clang Clang issues not falling into any other category labels Nov 23, 2024
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llvmbot commented Nov 23, 2024

@llvm/issue-subscribers-clang-modules

Author: Arthur Laurent (Arthapz)

Hello, i noticed that clangd was constantly crashing with --experimental-modules-support on one of my project after recompiled llvm in debug mode, my project doesn't compile anymore and clang crash when parsing a specific module (100% of the time, while in with clang in release mode, the crash only occurs sometimes), i don't know if clangd crashing is related to this issues (it was something wrong about AST deserialisation) but here the repro and the scanner 
❯ /opt/llvm-git/bin/clang --version
clang version 20.0.0 (/home/arthapz/AUR/llvm-git/llvm-project d121d71fc7fcb8c969959147f5f58b31f9c6b251)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /opt/llvm-git/bin
Build config: +unoptimized, +assertions

https://github.com/Arthapz/clang-crash-modules-117440

❯ xmake b -v
[ 38%]: &lt;foo&gt; compiling.module.release DynamicLoader:Base
/opt/llvm-git/bin/clang -c -Qunused-arguments -m64 -std=c++26 -stdlib=libc++ -cxx-isystem/opt/llvm-git/include/c++/v1 -fmodule-file=Pimpl=build/.gens/foo/linux/x86_64/release/rules/bmi/cache/modules/3319d13e/Pimpl.pcm -fmodule-file=std=build/.gens/foo/li
error: clang-20: /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/AST/DeclCXX.h:2610: void clang::CXXConstructorDecl::setExplicitSpecifier(ExplicitSpecifier): Assertion `(!ES.getExpr() || CXXConstructorDeclBits.HasTrailingExplicitSpecifier
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/llvm-git/bin/clang-20 -cc1 -triple x86_64-pc-linux-gnu -emit-module-interface -disable-free -clear-ast-before-backend -main-file-name DynamicLoader-Base.mpp -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=a
1.      src/DynamicLoader-Base.mpp:46:40: current parser token ';'
2.      src/DynamicLoader-Base.mpp:7:8: parsing namespace 'stormkit'
3.      src/DynamicLoader-Base.mpp:7:36: parsing namespace 'stormkit::core'
4.      src/DynamicLoader-Base.mpp:8:5: parsing struct/union/class body 'stormkit::DynamicLoader'
5.      /home/arthapz/Repos/qkdmqlksdlmqkdq/src/Pimpl.mpp:10:11: instantiating class definition 'stormkit::Pimpl&lt;stormkit::DynamicLoader::DynamicLoaderImpl&gt;'
 #<!-- -->0 0x00007782da8c8961 llvm::sys::PrintStackTrace(llvm::raw_ostream&amp;, int) /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/lib/Support/Unix/Signals.inc:723:11
 #<!-- -->1 0x00007782da8c8f6f PrintStackTraceSignalHandler(void*) /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/lib/Support/Unix/Signals.inc:798:1
 #<!-- -->2 0x00007782da8c6bc7 llvm::sys::RunSignalHandlers() /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/lib/Support/Signals.cpp:105:5
 #<!-- -->3 0x00007782da8c9735 SignalHandler(int) /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/lib/Support/Unix/Signals.inc:413:1
 #<!-- -->4 0x00007782d8e4c1d0 (/usr/lib/libc.so.6+0x3d1d0)
 #<!-- -->5 0x00007782d8ea53f4 (/usr/lib/libc.so.6+0x963f4)
 #<!-- -->6 0x00007782d8e4c120 raise (/usr/lib/libc.so.6+0x3d120)
 #<!-- -->7 0x00007782d8e334c3 abort (/usr/lib/libc.so.6+0x244c3)
 #<!-- -->8 0x00007782d8e333df (/usr/lib/libc.so.6+0x243df)
 #<!-- -->9 0x00007782d8e44177 (/usr/lib/libc.so.6+0x35177)
#<!-- -->10 0x00007782e4d64269 clang::CXXConstructorDecl::setExplicitSpecifier(clang::ExplicitSpecifier) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/AST/DeclCXX.h:2611:12
#<!-- -->11 0x00007782e907130b clang::ASTDeclReader::VisitCXXConstructorDecl(clang::CXXConstructorDecl*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:2320:7
#<!-- -->12 0x00007782e90a231c clang::declvisitor::Base&lt;std::add_pointer, clang::ASTDeclReader, void&gt;::Visit(clang::Decl*) /home/arthapz/AUR/llvm-git/src/llvm-project-build/tools/clang/include/clang/AST/DeclNodes.inc:258:1
#<!-- -->13 0x00007782e9063b38 clang::ASTDeclReader::Visit(clang::Decl*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:550:37
#<!-- -->14 0x00007782e90a177f clang::ASTReader::ReadDeclRecord(clang::GlobalDeclID)::$_1::operator()() const /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:4180:63
#<!-- -->15 0x00007782e90a1759 void llvm::function_ref&lt;void ()&gt;::callback_fn&lt;clang::ASTReader::ReadDeclRecord(clang::GlobalDeclID)::$_1&gt;(long) /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:46:5
#<!-- -->16 0x00007782e433cd9d llvm::function_ref&lt;void ()&gt;::operator()() const /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:69:5
#<!-- -->17 0x00007782e433d06e clang::runWithSufficientStackSpace(llvm::function_ref&lt;void ()&gt;, llvm::function_ref&lt;void ()&gt;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/Basic/Stack.h:52:3
#<!-- -->18 0x00007782e433ce19 clang::StackExhaustionHandler::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref&lt;void ()&gt;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Basic/StackExhaustionHandler.cpp:21:1
#<!-- -->19 0x00007782e5c03a81 clang::Sema::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref&lt;void ()&gt;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Sema/Sema.cpp:565:1
#<!-- -->20 0x00007782e8fbf89f clang::ASTReader::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref&lt;void ()&gt;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReader.cpp:9664:5
#<!-- -->21 0x00007782e909bb55 clang::ASTReader::ReadDeclRecord(clang::GlobalDeclID) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:4184:40
#<!-- -->22 0x00007782e8faf5eb clang::ASTReader::GetDecl(clang::GlobalDeclID) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReader.cpp:7977:5
#<!-- -->23 0x00007782e90352d6 clang::NamedDecl* clang::ASTReader::ReadDeclAs&lt;clang::NamedDecl&gt;(clang::serialization::ModuleFile&amp;, llvm::SmallVectorImpl&lt;unsigned long&gt; const&amp;, unsigned int&amp;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/Seriali
#<!-- -->24 0x00007782e8fde61c clang::NamedDecl* clang::ASTRecordReader::readDeclAs&lt;clang::NamedDecl&gt;() /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/Serialization/ASTRecordReader.h:203:5
#<!-- -->25 0x00007782e90a35dd clang::NamedDecl* clang::ASTDeclReader::readDeclAs&lt;clang::NamedDecl&gt;() /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:197:43
#<!-- -->26 0x00007782e9071980 clang::ASTDeclReader::VisitTemplateDecl(clang::TemplateDecl*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:2398:11
#<!-- -->27 0x00007782e9071eac clang::ASTDeclReader::VisitRedeclarableTemplateDecl(clang::RedeclarableTemplateDecl*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:2446:3
#<!-- -->28 0x00007782e90727ab clang::ASTDeclReader::VisitFunctionTemplateDecl(clang::FunctionTemplateDecl*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:2584:31
#<!-- -->29 0x00007782e90a256e clang::declvisitor::Base&lt;std::add_pointer, clang::ASTDeclReader, void&gt;::Visit(clang::Decl*) /home/arthapz/AUR/llvm-git/src/llvm-project-build/tools/clang/include/clang/AST/DeclNodes.inc:518:1
#<!-- -->30 0x00007782e9063b38 clang::ASTDeclReader::Visit(clang::Decl*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:550:37
#<!-- -->31 0x00007782e90a177f clang::ASTReader::ReadDeclRecord(clang::GlobalDeclID)::$_1::operator()() const /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:4180:63
#<!-- -->32 0x00007782e90a1759 void llvm::function_ref&lt;void ()&gt;::callback_fn&lt;clang::ASTReader::ReadDeclRecord(clang::GlobalDeclID)::$_1&gt;(long) /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:46:5
#<!-- -->33 0x00007782e433cd9d llvm::function_ref&lt;void ()&gt;::operator()() const /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:69:5
#<!-- -->34 0x00007782e433d06e clang::runWithSufficientStackSpace(llvm::function_ref&lt;void ()&gt;, llvm::function_ref&lt;void ()&gt;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/Basic/Stack.h:52:3
#<!-- -->35 0x00007782e433ce19 clang::StackExhaustionHandler::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref&lt;void ()&gt;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Basic/StackExhaustionHandler.cpp:21:1
#<!-- -->36 0x00007782e5c03a81 clang::Sema::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref&lt;void ()&gt;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Sema/Sema.cpp:565:1
#<!-- -->37 0x00007782e8fbf89f clang::ASTReader::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref&lt;void ()&gt;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReader.cpp:9664:5
#<!-- -->38 0x00007782e909bb55 clang::ASTReader::ReadDeclRecord(clang::GlobalDeclID) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:4184:40
#<!-- -->39 0x00007782e8faf5eb clang::ASTReader::GetDecl(clang::GlobalDeclID) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReader.cpp:7977:5
#<!-- -->40 0x00007782e8fe3856 clang::ASTReader::ReadDecl(clang::serialization::ModuleFile&amp;, llvm::SmallVectorImpl&lt;unsigned long&gt; const&amp;, unsigned int&amp;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/Serialization/ASTReader.h:2045:5
#<!-- -->41 0x00007782e909ea4c clang::ASTReader::loadPendingDeclChain(clang::Decl*, unsigned long) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp:4420:15
#<!-- -->42 0x00007782e8fc0ab2 clang::ASTReader::finishPendingActions() /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReader.cpp:9871:57
#<!-- -->43 0x00007782e8fc3e7a clang::ASTReader::FinishedDeserializing() /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Serialization/ASTReader.cpp:0:5
#<!-- -->44 0x00007782e4d19fb0 clang::ExternalASTSource::Deserializing::~Deserializing() /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/AST/ExternalASTSource.h:89:5
#<!-- -->45 0x00007782e4d3e5d4 clang::DeclContext::LoadLexicalDeclsFromExternalStorage() const /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/AST/DeclBase.cpp:1590:1
#<!-- -->46 0x00007782e4d3e9c0 clang::DeclContext::decls_begin() const /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/AST/DeclBase.cpp:0:5
#<!-- -->47 0x00007782e4667bea clang::DeclContext::decls() const /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/AST/DeclBase.h:2353:48
#<!-- -->48 0x00007782e6abda4e clang::Sema::InstantiateClass(clang::SourceLocation, clang::CXXRecordDecl*, clang::CXXRecordDecl*, clang::MultiLevelTemplateArgumentList const&amp;, clang::TemplateSpecializationKind, bool) /home/arthapz/AUR/llvm-git/src/llvm-project/c
#<!-- -->49 0x00007782e6abf5d7 clang::Sema::InstantiateClassTemplateSpecialization(clang::SourceLocation, clang::ClassTemplateSpecializationDecl*, clang::TemplateSpecializationKind, bool) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Sema/SemaTemplateIns
#<!-- -->50 0x00007782e6cb0f83 clang::Sema::RequireCompleteTypeImpl(clang::SourceLocation, clang::QualType, clang::Sema::CompleteTypeKind, clang::Sema::TypeDiagnoser*)::$_0::operator()() const /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Sema/SemaType.c
#<!-- -->51 0x00007782e6cb0f29 void llvm::function_ref&lt;void ()&gt;::callback_fn&lt;clang::Sema::RequireCompleteTypeImpl(clang::SourceLocation, clang::QualType, clang::Sema::CompleteTypeKind, clang::Sema::TypeDiagnoser*)::$_0&gt;(long) /home/arthapz/AUR/llvm-git/src/llvm-
#<!-- -->52 0x00007782e433cd9d llvm::function_ref&lt;void ()&gt;::operator()() const /home/arthapz/AUR/llvm-git/src/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:69:5
#<!-- -->53 0x00007782e433d06e clang::runWithSufficientStackSpace(llvm::function_ref&lt;void ()&gt;, llvm::function_ref&lt;void ()&gt;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/Basic/Stack.h:52:3
#<!-- -->54 0x00007782e433ce19 clang::StackExhaustionHandler::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref&lt;void ()&gt;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Basic/StackExhaustionHandler.cpp:21:1
#<!-- -->55 0x00007782e5c03a81 clang::Sema::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref&lt;void ()&gt;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Sema/Sema.cpp:565:1
#<!-- -->56 0x00007782e6c8c54b clang::Sema::RequireCompleteTypeImpl(clang::SourceLocation, clang::QualType, clang::Sema::CompleteTypeKind, clang::Sema::TypeDiagnoser*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Sema/SemaType.cpp:9335:22
#<!-- -->57 0x00007782e6c8bd04 clang::Sema::RequireCompleteType(clang::SourceLocation, clang::QualType, clang::Sema::CompleteTypeKind, clang::Sema::TypeDiagnoser&amp;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Sema/SemaType.cpp:9056:7
#<!-- -->58 0x00007782e5f4c483 bool clang::Sema::RequireCompleteSizedType&lt;&gt;(clang::SourceLocation, clang::QualType, unsigned int) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/include/clang/Sema/Sema.h:7829:12
#<!-- -->59 0x00007782e5f23df7 clang::Sema::CheckFieldDecl(clang::DeclarationName, clang::QualType, clang::TypeSourceInfo*, clang::RecordDecl*, clang::SourceLocation, bool, clang::Expr*, clang::InClassInitStyle, clang::SourceLocation, clang::AccessSpecifier, cla
#<!-- -->60 0x00007782e5f23ac5 clang::Sema::HandleField(clang::Scope*, clang::RecordDecl*, clang::SourceLocation, clang::Declarator&amp;, clang::Expr*, clang::InClassInitStyle, clang::AccessSpecifier) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Sema/SemaDe
#<!-- -->61 0x00007782e5fdf452 clang::Sema::ActOnCXXMemberDeclarator(clang::Scope*, clang::AccessSpecifier, clang::Declarator&amp;, llvm::MutableArrayRef&lt;clang::TemplateParameterList*&gt;, clang::Expr*, clang::VirtSpecifiers const&amp;, clang::InClassInitStyle) /home/artha
#<!-- -->62 0x00007782e4682a59 clang::Parser::ParseCXXClassMemberDeclaration(clang::AccessSpecifier, clang::ParsedAttributes&amp;, clang::Parser::ParsedTemplateInfo&amp;, clang::ParsingDeclRAIIObject*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseDec
#<!-- -->63 0x00007782e46846f6 clang::Parser::ParseCXXClassMemberDeclarationWithPragmas(clang::AccessSpecifier&amp;, clang::ParsedAttributes&amp;, clang::TypeSpecifierType, clang::Decl*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseDeclCXX.cpp:3742:1
#<!-- -->64 0x00007782e467e715 clang::Parser::ParseCXXMemberSpecification(clang::SourceLocation, clang::SourceLocation, clang::ParsedAttributes&amp;, unsigned int, clang::Decl*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseDeclCXX.cpp:3946:7
#<!-- -->65 0x00007782e467c8ea clang::Parser::ParseClassSpecifier(clang::tok::TokenKind, clang::SourceLocation, clang::DeclSpec&amp;, clang::Parser::ParsedTemplateInfo&amp;, clang::AccessSpecifier, bool, clang::Parser::DeclSpecContext, clang::ParsedAttributes&amp;) /home/ar
#<!-- -->66 0x00007782e4642439 clang::Parser::ParseDeclarationSpecifiers(clang::DeclSpec&amp;, clang::Parser::ParsedTemplateInfo&amp;, clang::AccessSpecifier, clang::Parser::DeclSpecContext, clang::Parser::LateParsedAttrList*, clang::ImplicitTypenameContext) /home/artha
#<!-- -->67 0x00007782e4657d26 clang::Parser::ParseDeclarationSpecifiers(clang::DeclSpec&amp;, clang::Parser::ParsedTemplateInfo&amp;, clang::AccessSpecifier, clang::Parser::DeclSpecContext, clang::Parser::LateParsedAttrList*) /home/arthapz/AUR/llvm-git/src/llvm-project
#<!-- -->68 0x00007782e4787f91 clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&amp;, clang::ParsedAttributes&amp;, clang::ParsingDeclSpec&amp;, clang::AccessSpecifier) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/Parser.cpp:1153:7
#<!-- -->69 0x00007782e4787a1a clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&amp;, clang::ParsedAttributes&amp;, clang::ParsingDeclSpec*, clang::AccessSpecifier) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/Parser.cpp:1266:12
#<!-- -->70 0x00007782e478711a clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&amp;, clang::ParsedAttributes&amp;, clang::ParsingDeclSpec*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/Parser.cpp:1069:14
#<!-- -->71 0x00007782e4673455 clang::Parser::ParseInnerNamespace(llvm::SmallVector&lt;clang::Parser::InnerNamespaceInfo, 4u&gt; const&amp;, unsigned int, clang::SourceLocation&amp;, clang::ParsedAttributes&amp;, clang::BalancedDelimiterTracker&amp;) /home/arthapz/AUR/llvm-git/src/ll
#<!-- -->72 0x00007782e4672cc1 clang::Parser::ParseNamespace(clang::DeclaratorContext, clang::SourceLocation&amp;, clang::SourceLocation) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseDeclCXX.cpp:252:18
#<!-- -->73 0x00007782e4639133 clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&amp;, clang::ParsedAttributes&amp;, clang::ParsedAttributes&amp;, clang::SourceLocation*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseDecl.cpp
#<!-- -->74 0x00007782e4786d66 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&amp;, clang::ParsedAttributes&amp;, clang::ParsingDeclSpec*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/Parser.cpp:1017:16
#<!-- -->75 0x00007782e4673455 clang::Parser::ParseInnerNamespace(llvm::SmallVector&lt;clang::Parser::InnerNamespaceInfo, 4u&gt; const&amp;, unsigned int, clang::SourceLocation&amp;, clang::ParsedAttributes&amp;, clang::BalancedDelimiterTracker&amp;) /home/arthapz/AUR/llvm-git/src/ll
#<!-- -->76 0x00007782e4672cc1 clang::Parser::ParseNamespace(clang::DeclaratorContext, clang::SourceLocation&amp;, clang::SourceLocation) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseDeclCXX.cpp:252:18
#<!-- -->77 0x00007782e46392a6 clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&amp;, clang::ParsedAttributes&amp;, clang::ParsedAttributes&amp;, clang::SourceLocation*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseDecl.cpp
#<!-- -->78 0x00007782e4786b76 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&amp;, clang::ParsedAttributes&amp;, clang::ParsingDeclSpec*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/Parser.cpp:985:14
#<!-- -->79 0x00007782e4674027 clang::Parser::ParseExportDeclaration() /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseDeclCXX.cpp:473:5
#<!-- -->80 0x00007782e4786b31 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&amp;, clang::ParsedAttributes&amp;, clang::ParsingDeclSpec*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/Parser.cpp:970:18
#<!-- -->81 0x00007782e4784be2 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr&lt;clang::DeclGroupRef&gt;&amp;, clang::Sema::ModuleImportState&amp;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/Parser.cpp:758:12
#<!-- -->82 0x00007782e4614fc8 clang::ParseAST(clang::Sema&amp;, bool, bool) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Parse/ParseAST.cpp:171:16
#<!-- -->83 0x00007782e94a1f15 clang::ASTFrontendAction::ExecuteAction() /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Frontend/FrontendAction.cpp:1193:1
#<!-- -->84 0x00007782e94a182d clang::FrontendAction::Execute() /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Frontend/FrontendAction.cpp:1081:7
#<!-- -->85 0x00007782e93aeae5 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&amp;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/Frontend/CompilerInstance.cpp:1062:23
#<!-- -->86 0x00007782e95c0cee clang::ExecuteCompilerInvocation(clang::CompilerInstance*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:296:8
#<!-- -->87 0x000064feedc1fc20 cc1_main(llvm::ArrayRef&lt;char const*&gt;, char const*, void*) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/tools/driver/cc1_main.cpp:286:13
#<!-- -->88 0x000064feedc12234 ExecuteCC1Tool(llvm::SmallVectorImpl&lt;char const*&gt;&amp;, llvm::ToolContext const&amp;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/tools/driver/driver.cpp:218:5
#<!-- -->89 0x000064feedc10ed0 clang_main(int, char**, llvm::ToolContext const&amp;) /home/arthapz/AUR/llvm-git/src/llvm-project/clang/tools/driver/driver.cpp:259:5
#<!-- -->90 0x000064feedc4836e main /home/arthapz/AUR/llvm-git/src/llvm-project-build/tools/clang/tools/driver/clang-driver.cpp:17:10
#<!-- -->91 0x00007782d8e34e08 (/usr/lib/libc.so.6+0x25e08)
#<!-- -->92 0x00007782d8e34ecc __libc_start_main (/usr/lib/libc.so.6+0x25ecc)
#<!-- -->93 0x000064feedc108e5 _start (/opt/llvm-git/bin/clang-20+0x1a8e5)
clang: error: unable to execute command: Aborted (core dumped)
clang: error: clang frontend command failed due to signal (use -v to see invocation)
clang version 20.0.0 (/home/arthapz/AUR/llvm-git/llvm-project d121d71fc7fcb8c969959147f5f58b31f9c6b251)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /opt/llvm-git/bin
Build config: +unoptimized, +assertions
clang: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg: /tmp/DynamicLoader-Base-f419b1.cppm
clang: note: diagnostic msg: /tmp/DynamicLoader-Base-f419b1.sh
clang: note: diagnostic msg:
********************

@Arthapz
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Arthapz commented Nov 23, 2024

and the crash is related to this line https://github.com/Arthapz/clang-crash-modules-117440/blob/c93033c57d53f91c20c013250767fd068ce0be27/src/Pimpl.mpp#L17

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clang:modules C++20 modules and Clang Header Modules crash Prefer [crash-on-valid] or [crash-on-invalid]
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@EugeneZelenko @Arthapz @llvmbot