Capturing structured binding in lambda in module causes Assertion isa<X>(Val) && "cast_if_present<Ty>() argument of incompatible type!"
#72828
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clang:frontend
Language frontend issues, e.g. anything involving "Sema"
clang:modules
C++20 modules and Clang Header Modules
confirmed
Verified by a second party
crash
Prefer [crash-on-valid] or [crash-on-invalid]
Comments
EugeneZelenko
added
clang:frontend
|
@llvm/issue-subscribers-clang-frontend Author: David Stone (davidstone)
The following valid translation unit:
export module m;
struct s {
int m;
};
void f() {
auto [x] = s();
[x] {};
}causes clang to crash with clang-18: /root/llvm-project/llvm/include/llvm/Support/Casting.h:706: auto llvm::cast_if_present(Y*) [with X = clang::VarDecl; Y = clang::Decl]: Assertion `isa<X>(Val) && "cast_if_present<Ty>() argument of incompatible type!"' 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-20231120/bin/clang-18 -cc1 -triple x86_64-unknown-linux-gnu -S -disable-free -clear-ast-before-backend -main-file-name example.cpp -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=all -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debug-info-kind=constructor -dwarf-version=4 -debugger-tuning=gdb -fdebug-compilation-dir=/app -fcoverage-compilation-dir=/app -resource-dir /opt/compiler-explorer/clang-assertions-trunk-20231120/lib/clang/18 -w -std=c++20 -ferror-limit 19 -fgnuc-version=4.2.1 -fcolor-diagnostics -mllvm --x86-asm-syntax=intel -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /app/output.s -x pcm /tmp/example-e4405b.pcm
1. <eof> parser at end of file
2. <source>:7:6: LLVM IR generation of declaration 'f'
3. <source>:7:6: Generating code for declaration 'f'
#<!-- -->0 0x0000000003795218 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x3795218)
#<!-- -->1 0x000000000379296c SignalHandler(int) Signals.cpp:0:0
#<!-- -->2 0x00007fbb303d2420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)
#<!-- -->3 0x00007fbb2fe9500b raise (/lib/x86_64-linux-gnu/libc.so.6+0x4300b)
#<!-- -->4 0x00007fbb2fe74859 abort (/lib/x86_64-linux-gnu/libc.so.6+0x22859)
#<!-- -->5 0x00007fbb2fe74729 (/lib/x86_64-linux-gnu/libc.so.6+0x22729)
#<!-- -->6 0x00007fbb2fe85fd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6)
#<!-- -->7 0x00000000044018d3 clang::ASTDeclReader::ReadCXXDefinitionData(clang::CXXRecordDecl::DefinitionData&, clang::CXXRecordDecl const*, clang::Decl*, unsigned int) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x44018d3)
#<!-- -->8 0x000000000440e9b8 clang::ASTDeclReader::ReadCXXRecordDefinition(clang::CXXRecordDecl*, bool, clang::Decl*, unsigned int) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x440e9b8)
#<!-- -->9 0x000000000442174b clang::ASTDeclReader::VisitCXXRecordDeclImpl(clang::CXXRecordDecl*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x442174b)
#<!-- -->10 0x0000000004427b65 clang::declvisitor::Base<std::add_pointer, clang::ASTDeclReader, void>::Visit(clang::Decl*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x4427b65)
#<!-- -->11 0x0000000004428022 clang::ASTDeclReader::Visit(clang::Decl*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x4428022)
#<!-- -->12 0x0000000004428679 clang::ASTReader::ReadDeclRecord(unsigned int) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x4428679)
#<!-- -->13 0x000000000435dc1b clang::ASTReader::GetDecl(unsigned int) (.part.0) ASTReader.cpp:0:0
#<!-- -->14 0x00000000043c8bb7 clang::serialization::AbstractTypeReader<clang::ASTRecordReader>::read(clang::Type::TypeClass) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x43c8bb7)
#<!-- -->15 0x00000000043c9df9 clang::ASTReader::readTypeRecord(unsigned int) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x43c9df9)
#<!-- -->16 0x00000000043ca304 clang::ASTReader::GetType(unsigned int) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x43ca304)
#<!-- -->17 0x000000000442c3fb clang::ASTStmtReader::VisitExpr(clang::Expr*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x442c3fb)
#<!-- -->18 0x0000000004434971 clang::ASTStmtReader::VisitLambdaExpr(clang::LambdaExpr*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x4434971)
#<!-- -->19 0x000000000443c0f2 clang::ASTReader::ReadStmtFromStream(clang::serialization::ModuleFile&) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x443c0f2)
#<!-- -->20 0x0000000004381c64 clang::ASTReader::GetExternalDeclStmt(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x4381c64)
#<!-- -->21 0x0000000006f9b783 clang::FunctionDecl::getBody(clang::FunctionDecl const*&) const (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x6f9b783)
#<!-- -->22 0x0000000003b2b669 clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl, llvm::Function*, clang::CodeGen::CGFunctionInfo const&) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x3b2b669)
#<!-- -->23 0x0000000003b8cc53 clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x3b8cc53)
#<!-- -->24 0x0000000003b87ae5 clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x3b87ae5)
#<!-- -->25 0x0000000003b880d3 clang::CodeGen::CodeGenModule::EmitGlobal(clang::GlobalDecl) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x3b880d3)
#<!-- -->26 0x0000000003b91753 clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl*) (.part.0) CodeGenModule.cpp:0:0
#<!-- -->27 0x0000000004010d86 (anonymous namespace)::CodeGeneratorImpl::HandleTopLevelDecl(clang::DeclGroupRef) ModuleBuilder.cpp:0:0
#<!-- -->28 0x0000000004002e6c clang::BackendConsumer::HandleInterestingDecl(clang::DeclGroupRef) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x4002e6c)
#<!-- -->29 0x00000000043e42fd clang::ASTReader::PassInterestingDeclsToConsumer() (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x43e42fd)
#<!-- -->30 0x0000000004355fae non-virtual thunk to clang::ASTReader::StartTranslationUnit(clang::ASTConsumer*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x4355fae)
#<!-- -->31 0x0000000005f1ed08 clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x5f1ed08)
#<!-- -->32 0x000000000400e9a8 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x400e9a8)
#<!-- -->33 0x0000000004275209 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x4275209)
#<!-- -->34 0x00000000041f56de clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x41f56de)
#<!-- -->35 0x000000000435454e clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x435454e)
#<!-- -->36 0x0000000000bf8346 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0xbf8346)
#<!-- -->37 0x0000000000befc0a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#<!-- -->38 0x0000000000bf47aa clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0xbf47aa)
#<!-- -->39 0x0000000000aef061 main (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0xaef061)
#<!-- -->40 0x00007fbb2fe76083 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x24083)
#<!-- -->41 0x0000000000bef6ee _start (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0xbef6ee)
clang++: error: unable to execute command: Aborted (core dumped)
clang++: error: clang frontend command failed due to signal (use -v to see invocation)
Compiler returned: 254when compiled with See it live: https://godbolt.org/z/KqsWGqdsY |
|
CC @ChuanqiXu9 |
|
Confirmed |
|
@llvm/issue-subscribers-clang-modules Author: David Stone (davidstone)
The following valid translation unit:
export module m;
struct s {
int m;
};
void f() {
auto [x] = s();
[x] {};
}causes clang to crash with clang-18: /root/llvm-project/llvm/include/llvm/Support/Casting.h:706: auto llvm::cast_if_present(Y*) [with X = clang::VarDecl; Y = clang::Decl]: Assertion `isa<X>(Val) && "cast_if_present<Ty>() argument of incompatible type!"' 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-20231120/bin/clang-18 -cc1 -triple x86_64-unknown-linux-gnu -S -disable-free -clear-ast-before-backend -main-file-name example.cpp -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=all -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debug-info-kind=constructor -dwarf-version=4 -debugger-tuning=gdb -fdebug-compilation-dir=/app -fcoverage-compilation-dir=/app -resource-dir /opt/compiler-explorer/clang-assertions-trunk-20231120/lib/clang/18 -w -std=c++20 -ferror-limit 19 -fgnuc-version=4.2.1 -fcolor-diagnostics -mllvm --x86-asm-syntax=intel -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /app/output.s -x pcm /tmp/example-e4405b.pcm
1. <eof> parser at end of file
2. <source>:7:6: LLVM IR generation of declaration 'f'
3. <source>:7:6: Generating code for declaration 'f'
#<!-- -->0 0x0000000003795218 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x3795218)
#<!-- -->1 0x000000000379296c SignalHandler(int) Signals.cpp:0:0
#<!-- -->2 0x00007fbb303d2420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)
#<!-- -->3 0x00007fbb2fe9500b raise (/lib/x86_64-linux-gnu/libc.so.6+0x4300b)
#<!-- -->4 0x00007fbb2fe74859 abort (/lib/x86_64-linux-gnu/libc.so.6+0x22859)
#<!-- -->5 0x00007fbb2fe74729 (/lib/x86_64-linux-gnu/libc.so.6+0x22729)
#<!-- -->6 0x00007fbb2fe85fd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6)
#<!-- -->7 0x00000000044018d3 clang::ASTDeclReader::ReadCXXDefinitionData(clang::CXXRecordDecl::DefinitionData&, clang::CXXRecordDecl const*, clang::Decl*, unsigned int) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x44018d3)
#<!-- -->8 0x000000000440e9b8 clang::ASTDeclReader::ReadCXXRecordDefinition(clang::CXXRecordDecl*, bool, clang::Decl*, unsigned int) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x440e9b8)
#<!-- -->9 0x000000000442174b clang::ASTDeclReader::VisitCXXRecordDeclImpl(clang::CXXRecordDecl*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x442174b)
#<!-- -->10 0x0000000004427b65 clang::declvisitor::Base<std::add_pointer, clang::ASTDeclReader, void>::Visit(clang::Decl*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x4427b65)
#<!-- -->11 0x0000000004428022 clang::ASTDeclReader::Visit(clang::Decl*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x4428022)
#<!-- -->12 0x0000000004428679 clang::ASTReader::ReadDeclRecord(unsigned int) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x4428679)
#<!-- -->13 0x000000000435dc1b clang::ASTReader::GetDecl(unsigned int) (.part.0) ASTReader.cpp:0:0
#<!-- -->14 0x00000000043c8bb7 clang::serialization::AbstractTypeReader<clang::ASTRecordReader>::read(clang::Type::TypeClass) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x43c8bb7)
#<!-- -->15 0x00000000043c9df9 clang::ASTReader::readTypeRecord(unsigned int) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x43c9df9)
#<!-- -->16 0x00000000043ca304 clang::ASTReader::GetType(unsigned int) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x43ca304)
#<!-- -->17 0x000000000442c3fb clang::ASTStmtReader::VisitExpr(clang::Expr*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x442c3fb)
#<!-- -->18 0x0000000004434971 clang::ASTStmtReader::VisitLambdaExpr(clang::LambdaExpr*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x4434971)
#<!-- -->19 0x000000000443c0f2 clang::ASTReader::ReadStmtFromStream(clang::serialization::ModuleFile&) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x443c0f2)
#<!-- -->20 0x0000000004381c64 clang::ASTReader::GetExternalDeclStmt(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x4381c64)
#<!-- -->21 0x0000000006f9b783 clang::FunctionDecl::getBody(clang::FunctionDecl const*&) const (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x6f9b783)
#<!-- -->22 0x0000000003b2b669 clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl, llvm::Function*, clang::CodeGen::CGFunctionInfo const&) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x3b2b669)
#<!-- -->23 0x0000000003b8cc53 clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x3b8cc53)
#<!-- -->24 0x0000000003b87ae5 clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x3b87ae5)
#<!-- -->25 0x0000000003b880d3 clang::CodeGen::CodeGenModule::EmitGlobal(clang::GlobalDecl) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x3b880d3)
#<!-- -->26 0x0000000003b91753 clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl*) (.part.0) CodeGenModule.cpp:0:0
#<!-- -->27 0x0000000004010d86 (anonymous namespace)::CodeGeneratorImpl::HandleTopLevelDecl(clang::DeclGroupRef) ModuleBuilder.cpp:0:0
#<!-- -->28 0x0000000004002e6c clang::BackendConsumer::HandleInterestingDecl(clang::DeclGroupRef) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x4002e6c)
#<!-- -->29 0x00000000043e42fd clang::ASTReader::PassInterestingDeclsToConsumer() (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x43e42fd)
#<!-- -->30 0x0000000004355fae non-virtual thunk to clang::ASTReader::StartTranslationUnit(clang::ASTConsumer*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x4355fae)
#<!-- -->31 0x0000000005f1ed08 clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x5f1ed08)
#<!-- -->32 0x000000000400e9a8 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x400e9a8)
#<!-- -->33 0x0000000004275209 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x4275209)
#<!-- -->34 0x00000000041f56de clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x41f56de)
#<!-- -->35 0x000000000435454e clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0x435454e)
#<!-- -->36 0x0000000000bf8346 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0xbf8346)
#<!-- -->37 0x0000000000befc0a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#<!-- -->38 0x0000000000bf47aa clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0xbf47aa)
#<!-- -->39 0x0000000000aef061 main (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0xaef061)
#<!-- -->40 0x00007fbb2fe76083 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x24083)
#<!-- -->41 0x0000000000bef6ee _start (/opt/compiler-explorer/clang-assertions-trunk-20231120/bin/clang-18+0xbef6ee)
clang++: error: unable to execute command: Aborted (core dumped)
clang++: error: clang frontend command failed due to signal (use -v to see invocation)
Compiler returned: 254when compiled with See it live: https://godbolt.org/z/KqsWGqdsY |
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The following valid translation unit:
causes clang to crash with
when compiled with
-std=c++20 -w -x c++-moduleSee it live: https://godbolt.org/z/KqsWGqdsY
The text was updated successfully, but these errors were encountered: