[clang] Assertion `operator bool()' failed. (original) (raw)

Reproducer:
https://godbolt.org/z/dhThazoWj

namespace std { template struct tuple_size; }

struct S { int a; };

template <> struct std::tuple_size { static constexpr int value = -1; };

int e = __builtin_structured_binding_size(S);

Backtrace:

clang++: /root/llvm-project/llvm/tools/clang/include/clang/Basic/UnsignedOrNone.h:24: clang::UnsignedOrNone::UnsignedOrNone(unsigned int): Assertion `operator bool()' 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 1. :13:45: current parser token ';' #0 0x0000000004189508 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4189508) #1 0x0000000004186934 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4186934) #2 0x00000000040cafc8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0 #3 0x000077f1a1442520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520) #4 0x000077f1a14969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc) #5 0x000077f1a1442476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476) #6 0x000077f1a14287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3) #7 0x000077f1a142871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b) #8 0x000077f1a1439e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96) #9 0x0000000006cadd01 clang::Sema::GetDecompositionElementCount(clang::QualType, clang::SourceLocation) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6cadd01) #10 0x000000000744bf38 clang::Sema::BuildTypeTrait(clang::TypeTrait, clang::SourceLocation, llvm::ArrayRefclang::TypeSourceInfo*, clang::SourceLocation) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x744bf38) #11 0x000000000744c77b clang::Sema::ActOnTypeTrait(clang::TypeTrait, clang::SourceLocation, llvm::ArrayRef<clang::OpaquePtrclang::QualType>, clang::SourceLocation) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x744c77b) #12 0x00000000068d7f60 clang::Parser::ParseTypeTrait() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x68d7f60) #13 0x00000000068c8145 clang::Parser::ParseCastExpression(clang::CastParseKind, bool, bool&, clang::TypoCorrectionTypeBehavior, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x68c8145) #14 0x00000000068ca3d7 clang::Parser::ParseCastExpression(clang::CastParseKind, bool, clang::TypoCorrectionTypeBehavior, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x68ca3d7) #15 0x00000000068ca469 clang::Parser::ParseAssignmentExpression(clang::TypoCorrectionTypeBehavior) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x68ca469) #16 0x00000000068833b8 clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x68833b8) #17 0x0000000006890739 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+++0x6890739) #18 0x000000000684da9e clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x684da9e) #19 0x000000000684e23f clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x684e23f) #20 0x000000000685607a clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x685607a) #21 0x0000000006857015 clang::Parser::ParseTopLevelDecl(clang::OpaquePtrclang::DeclGroupRef&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6857015) #22 0x0000000006837a8a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6837a8a) #23 0x0000000004ac34d8 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4ac34d8) #24 0x0000000004dae905 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4dae905) #25 0x0000000004d2a7de clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4d2a7de) #26 0x0000000004ea3e7d clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4ea3e7d) #27 0x0000000000db6f00 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdb6f00) #28 0x0000000000dadb1a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0 #29 0x0000000004b2c4f9 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optionalllvm::StringRef>, std::__cxx11::basic_string<char, std::char_traits, std::allocator>, bool) const::'lambda'()>(long) Job.cpp:0:0 #30 0x00000000040cb464 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x40cb464) #31 0x0000000004b2cb0f clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optionalllvm::StringRef>, std::__cxx11::basic_string<char, std::char_traits, std::allocator>, bool) const (.part.0) Job.cpp:0:0 #32 0x0000000004aedf52 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4aedf52) #33 0x0000000004aeeefe 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+++0x4aeeefe) #34 0x0000000004af6625 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4af6625) #35 0x0000000000db337a clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdb337a) #36 0x0000000000c65044 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xc65044) #37 0x000077f1a1429d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90) #38 0x000077f1a1429e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40) #39 0x0000000000dad5c5 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdad5c5) clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation) Compiler returned: 134