| Issue |
202744
|
| Summary |
[Clang] Crash in ASTContext::getConstantMatrixType when instantiating nested matrix_type templates
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
hongtaihu
|
This input is generated by a fuzzer.
https://godbolt.org/z/MGrvY5aMh
seems to be introduced since clang11.
Can be observed on the non-assertion version.
use
```
-fenable-matrix
```
source code:
```cxx
template <typename X>
using matrix_4_4 = X __attribute__((matrix_type(4, 4)));
template <typename Y>
using matrix_5_5 = Y __attribute__((matrix_type(5, 5)));
void CastDoubleMatrixToIntCStyle() {
matrix_5_5<matrix_5_5<float>> d;
i = (matrix_5_5<int>)d;
}
```
stacktrace:
```
clang++: /root/llvm-project/llvm/tools/clang/lib/AST/ASTContext.cpp:4843: clang::QualType clang::ASTContext::getConstantMatrixType(clang::QualType, unsigned int, unsigned int) const: Assertion `MatrixType::isValidElementType(ElementTy, getLangOpts()) && "need a valid element type"' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and dumped files.
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 -fenable-matrix <source>
1. <source>:7:3: at annotation token
2. <source>:6:36: parsing function body 'CastDoubleMatrixToIntCStyle'
3. <source>:6:36: in compound statement ('{}')
#0 0x000000000437c168 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x437c168)
#1 0x0000000004378fa4 llvm::sys::RunSignalHandlers() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4378fa4)
#2 0x00000000043795c4 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x43795c4)
#3 0x00000000042b4af8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#4 0x00007e9246045330 (/lib/x86_64-linux-gnu/libc.so.6+0x45330)
#5 0x00007e924609eb2c pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x9eb2c)
#6 0x00007e924604527e raise (/lib/x86_64-linux-gnu/libc.so.6+0x4527e)
#7 0x00007e92460288ff abort (/lib/x86_64-linux-gnu/libc.so.6+0x288ff)
#8 0x00007e924602881b (/lib/x86_64-linux-gnu/libc.so.6+0x2881b)
#9 0x00007e924603b517 (/lib/x86_64-linux-gnu/libc.so.6+0x3b517)
#10 0x0000000007bea561 clang::ASTContext::getConstantMatrixType(clang::QualType, unsigned int, unsigned int) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7bea561)
#11 0x000000000779efef clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformType(clang::TypeLocBuilder&, clang::TypeLoc) SemaTemplateInstantiate.cpp:0:0
#12 0x00000000077a2ae7 clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformType(clang::TypeSourceInfo*) SemaTemplateInstantiate.cpp:0:0
#13 0x00000000077a2beb clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformType(clang::QualType) SemaTemplateInstantiate.cpp:0:0
#14 0x00000000077a3269 clang::Sema::SubstType(clang::QualType, clang::MultiLevelTemplateArgumentList const&, clang::SourceLocation, clang::DeclarationName, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x77a3269)
#15 0x00000000076789b6 clang::Sema::CheckTemplateIdType(clang::ElaboratedTypeKeyword, clang::TemplateName, clang::SourceLocation, clang::TemplateArgumentListInfo&, clang::Scope*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x76789b6)
#16 0x000000000767b731 clang::Sema::ActOnTemplateIdType(clang::Scope*, clang::ElaboratedTypeKeyword, clang::SourceLocation, clang::CXXScopeSpec&, clang::SourceLocation, clang::OpaquePtr<clang::TemplateName>, clang::IdentifierInfo const*, clang::SourceLocation, clang::SourceLocation, llvm::MutableArrayRef<clang::ParsedTemplateArgument>, clang::SourceLocation, bool, bool, clang::ImplicitTypenameContext) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x767b731)
#17 0x0000000006d51082 clang::Parser::AnnotateTemplateIdTokenAsType(clang::CXXScopeSpec&, clang::ImplicitTypenameContext, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6d51082)
#18 0x0000000006c3c590 clang::Parser::TryAnnotateTypeOrScopeTokenAfterScopeSpec(clang::CXXScopeSpec&, bool, clang::ImplicitTypenameContext) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c3c590)
#19 0x0000000006c3c968 clang::Parser::TryAnnotateName(clang::CorrectionCandidateCallback*, clang::ImplicitTypenameContext) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c3c968)
#20 0x0000000006d3c69d clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 24u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::LabelDecl*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6d3c69d)
#21 0x0000000006d3d749 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 24u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::LabelDecl*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6d3d749)
#22 0x0000000006d45f6e clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6d45f6e)
#23 0x0000000006d4678a clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6d4678a)
#24 0x0000000006c4a603 clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::LateParsedAttrList*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c4a603)
#25 0x0000000006c81913 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+++0x6c81913)
#26 0x0000000006c3db4b clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c3db4b)
#27 0x0000000006c3e34f clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c3e34f)
#28 0x0000000006c45e11 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c45e11)
#29 0x0000000006c46d45 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c46d45)
#30 0x0000000006c27bfa clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c27bfa)
#31 0x0000000004e6ab58 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4e6ab58)
#32 0x00000000051a1688 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x51a1688)
#33 0x000000000511e8cd clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x511e8cd)
#34 0x00000000052a179d clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x52a179d)
#35 0x0000000000e214ff cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xe214ff)
#36 0x0000000000e17eba ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>) driver.cpp:0:0
#37 0x0000000000e1803d 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
#38 0x0000000004edd539 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
#39 0x00000000042b4f34 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x42b4f34)
#40 0x0000000004eddb86 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
#41 0x0000000004e9a062 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4e9a062)
#42 0x0000000004e9b00e 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+++0x4e9b00e)
#43 0x0000000004ea3215 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4ea3215)
#44 0x0000000000e1d8ec clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xe1d8ec)
#45 0x0000000000cc173a main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xcc173a)
#46 0x00007e924602a1ca (/lib/x86_64-linux-gnu/libc.so.6+0x2a1ca)
#47 0x00007e924602a28b __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28b)
#48 0x0000000000e17955 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xe17955)
clang++: error: clang frontend command failed due to signal (use -v to see invocation)
Compiler returned: 134
```
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