| Issue |
177943
|
| Summary |
[clang] Assertion `ED->isThisDeclarationADemotedDefinition()' failed.
|
| Labels |
clang:frontend,
crash-on-valid
|
| Assignees |
|
| Reporter |
k-arrows
|
Reproducer:
https://godbolt.org/z/7Ecq8s7qq
```cpp
enum E {};
enum E;
enum {
a = (__underlying_type(E)){},
};
```
Backtrace:
```console
clang++: /root/llvm-project/llvm/tools/clang/lib/Sema/SemaType.cpp:9894: clang::QualType GetEnumUnderlyingType(clang::Sema&, clang::QualType, clang::SourceLocation): Assertion `ED->isThisDeclarationADemotedDefinition()' 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++ -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 <source>
1. <source>:5:29: current parser token '{'
#0 0x000000000430e638 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x430e638)
#1 0x000000000430ba94 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x430ba94)
#2 0x000000000424d858 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x000076d486a42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x000076d486a969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x000076d486a42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x000076d486a287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x000076d486a2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
#8 0x000076d486a39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#9 0x00000000076d275d GetEnumUnderlyingType(clang::Sema&, clang::QualType, clang::SourceLocation) SemaType.cpp:0:0
#10 0x00000000076dda08 clang::Sema::BuiltinEnumUnderlyingType(clang::QualType, clang::SourceLocation) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x76dda08)
#11 0x00000000076edd22 clang::Sema::BuildUnaryTransformType(clang::QualType, clang::UnaryTransformType::UTTKind, clang::SourceLocation) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x76edd22)
#12 0x00000000076f12fa GetDeclSpecTypeForDeclarator((anonymous namespace)::TypeProcessingState&, clang::TypeSourceInfo*&) (.constprop.0) SemaType.cpp:0:0
#13 0x0000000007701697 clang::Sema::GetTypeForDeclarator(clang::Declarator&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7701697)
#14 0x0000000007701a0e clang::Sema::ActOnTypeName(clang::Declarator&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7701a0e)
#15 0x0000000006b11a09 clang::Parser::ParseParenExpression(clang::ParenParseOption&, bool, clang::ParenExprKind, clang::TypoCorrectionTypeBehavior, clang::OpaquePtr<clang::QualType>&, clang::SourceLocation&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6b11a09)
#16 0x0000000006b07678 clang::Parser::ParseCastExpression(clang::CastParseKind, bool, bool&, clang::TypoCorrectionTypeBehavior, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6b07678)
#17 0x0000000006b1399e clang::Parser::ParseConstantExpressionInExprEvalContext(clang::TypoCorrectionTypeBehavior) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6b1399e)
#18 0x0000000006ace26d clang::Parser::ParseEnumBody(clang::SourceLocation, clang::Decl*, clang::SkipBodyInfo*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6ace26d)
#19 0x0000000006ad6614 clang::Parser::ParseEnumSpecifier(clang::SourceLocation, clang::DeclSpec&, clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier, clang::Parser::DeclSpecContext) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6ad6614)
#20 0x0000000006ad26ea 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+++0x6ad26ea)
#21 0x0000000006a8cb97 clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a8cb97)
#22 0x0000000006a8d60f clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a8d60f)
#23 0x0000000006a95611 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a95611)
#24 0x0000000006a96525 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a96525)
#25 0x0000000006a7723a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a7723a)
#26 0x0000000004c77cd8 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4c77cd8)
#27 0x0000000004f72e35 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4f72e35)
#28 0x0000000004ef285e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4ef285e)
#29 0x000000000506e01d clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x506e01d)
#30 0x0000000000dde97e cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdde97e)
#31 0x0000000000dd534a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>) driver.cpp:0:0
#32 0x0000000000dd54cd int llvm::function_ref<int (llvm::SmallVectorImpl<char const*>&)>::callback_fn<clang_main(int, char**, llvm::ToolContext const&)::'lambda'(llvm::SmallVectorImpl<char const*>&)>(long, llvm::SmallVectorImpl<char const*>&) driver.cpp:0:0
#33 0x0000000004ceb719 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
#34 0x000000000424dcf4 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x424dcf4)
#35 0x0000000004cebd2f 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
#36 0x0000000004cac702 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4cac702)
#37 0x0000000004cad6ae 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+++0x4cad6ae)
#38 0x0000000004cb4af5 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4cb4af5)
#39 0x0000000000ddacf1 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xddacf1)
#40 0x0000000000c97d44 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xc97d44)
#41 0x000076d486a29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#42 0x000076d486a29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#43 0x0000000000dd4de5 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdd4de5)
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134
```
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