| Issue |
131408
|
| Summary |
[Clang] Crash on CTAD for alias template involving aggregate initialization of NTTP
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
MagentaTreehouse
|
```c++
struct Node {};
template <class T, Node>
struct A {
A(T) {}
};
template <class T>
using AA = A<T, {}>;
AA a{0};
```
See https://compiler-explorer.com/z/brveohPdG.
Assertion:
```console
clang++: /root/llvm-project/clang/lib/AST/Expr.cpp:2466:
bool clang::InitListExpr::isTransparent() const:
Assertion `isSemanticForm() && "syntactic form never semantically transparent"' failed.
```
<details>
<summary>Stack dump</summary>
```console
0. Program arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/clang++ -gdwarf-4 -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 -std=c++20 <source>
1. <source>:11:8: current parser token ';'
#0 0x0000000003e7f2b8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3e7f2b8)
#1 0x0000000003e7cf74 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3e7cf74)
#2 0x0000000003dc1978 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x00007bc03b442520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007bc03b4969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x00007bc03b442476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x00007bc03b4287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x00007bc03b42871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
#8 0x00007bc03b439e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#9 0x00000000076c66bc clang::InitListExpr::isTransparent() const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x76c66bc)
#10 0x000000000776309e clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::RecordExprEvaluator, bool>::Visit(clang::Stmt const*) ExprConstant.cpp:0:0
#11 0x0000000007765018 EvaluateRecord(clang::Expr const*, (anonymous namespace)::LValue const&, clang::APValue&, (anonymous namespace)::EvalInfo&) ExprConstant.cpp:0:0
#12 0x0000000007727391 EvaluateInPlace(clang::APValue&, (anonymous namespace)::EvalInfo&, (anonymous namespace)::LValue const&, clang::Expr const*, bool) ExprConstant.cpp:0:0
#13 0x0000000007769fd7 clang::Expr::EvaluateAsConstantExpr(clang::Expr::EvalResult&, clang::ASTContext const&, clang::Expr::ConstantExprKind) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7769fd7)
#14 0x0000000006d99773 clang::Sema::EvaluateConvertedConstantExpression(clang::Expr*, clang::QualType, clang::APValue&, clang::Sema::CCEKind, bool, clang::APValue const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6d99773)
#15 0x0000000006ea06e1 clang::Sema::CheckTemplateArgument(clang::NonTypeTemplateParmDecl*, clang::QualType, clang::Expr*, clang::TemplateArgument&, clang::TemplateArgument&, bool, clang::Sema::CheckTemplateArgumentKind) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6ea06e1)
#16 0x0000000006ea4856 clang::Sema::CheckTemplateArgument(clang::NamedDecl*, clang::TemplateArgumentLoc&, clang::NamedDecl*, clang::SourceLocation, clang::SourceLocation, unsigned int, clang::Sema::CheckTemplateArgumentInfo&, clang::Sema::CheckTemplateArgumentKind) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6ea4856)
#17 0x0000000006ea92f0 clang::Sema::CheckTemplateArgumentList(clang::TemplateDecl*, clang::SourceLocation, clang::TemplateArgumentListInfo&, clang::DefaultArguments const&, bool, clang::Sema::CheckTemplateArgumentInfo&, bool, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6ea92f0)
#18 0x0000000006eae284 clang::Sema::CheckTemplateIdType(clang::TemplateName, clang::SourceLocation, clang::TemplateArgumentListInfo&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6eae284)
#19 0x0000000007046a6d clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformTemplateSpecializationType(clang::TypeLocBuilder&, clang::TemplateSpecializationTypeLoc, clang::TemplateName) SemaTemplateInstantiate.cpp:0:0
#20 0x0000000007024096 clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformType(clang::TypeLocBuilder&, clang::TypeLoc) SemaTemplateInstantiate.cpp:0:0
#21 0x0000000007027d0a clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformType(clang::TypeSourceInfo*) SemaTemplateInstantiate.cpp:0:0
#22 0x0000000007027e2c clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformType(clang::QualType) SemaTemplateInstantiate.cpp:0:0
#23 0x0000000007023476 clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformType(clang::TypeLocBuilder&, clang::TypeLoc) SemaTemplateInstantiate.cpp:0:0
#24 0x0000000007065c42 clang::Sema::SubstFunctionDeclType(clang::TypeSourceInfo*, clang::MultiLevelTemplateArgumentList const&, clang::SourceLocation, clang::DeclarationName, clang::CXXRecordDecl*, clang::Qualifiers, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7065c42)
#25 0x000000000708933e clang::TemplateDeclInstantiator::SubstFunctionType(clang::FunctionDecl*, llvm::SmallVectorImpl<clang::ParmVarDecl*>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x708933e)
#26 0x00000000070e5c81 clang::TemplateDeclInstantiator::VisitFunctionDecl(clang::FunctionDecl*, clang::TemplateParameterList*, clang::TemplateDeclInstantiator::RewriteKind) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x70e5c81)
#27 0x00000000070e7183 clang::TemplateDeclInstantiator::VisitCXXDeductionGuideDecl(clang::CXXDeductionGuideDecl*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x70e7183)
#28 0x00000000070ea314 void llvm::function_ref<void ()>::callback_fn<clang::Sema::SubstDecl(clang::Decl*, clang::DeclContext*, clang::MultiLevelTemplateArgumentList const&)::'lambda'()>(long) SemaTemplateInstantiateDecl.cpp:0:0
#29 0x0000000007d5e311 clang::StackExhaustionHandler::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7d5e311)
#30 0x00000000070890fa clang::Sema::SubstDecl(clang::Decl*, clang::DeclContext*, clang::MultiLevelTemplateArgumentList const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x70890fa)
#31 0x000000000708ad25 clang::Sema::InstantiateFunctionDeclaration(clang::FunctionTemplateDecl*, clang::TemplateArgumentList const*, clang::SourceLocation, clang::Sema::CodeSynthesisContext::SynthesisKind) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x708ad25)
#32 0x0000000006fa27ca (anonymous namespace)::BuildDeductionGuideForTypeAlias(clang::Sema&, clang::TypeAliasTemplateDecl*, clang::FunctionTemplateDecl*, clang::SourceLocation) SemaTemplateDeductionGuide.cpp:0:0
#33 0x0000000006fe7b55 clang::Sema::DeclareImplicitDeductionGuides(clang::TemplateDecl*, clang::SourceLocation) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6fe7b55)
#34 0x0000000006bcbf1f LookupDirect(clang::Sema&, clang::LookupResult&, clang::DeclContext const*) SemaLookup.cpp:0:0
#35 0x0000000006bb70a2 clang::Sema::LookupQualifiedName(clang::LookupResult&, clang::DeclContext*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6bb70a2)
#36 0x0000000006b9582e clang::Sema::DeduceTemplateSpecializationFromInitializer(clang::TypeSourceInfo*, clang::InitializedEntity const&, clang::InitializationKind const&, llvm::MutableArrayRef<clang::Expr*>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6b9582e)
#37 0x00000000068152fd clang::Sema::deduceVarTypeFromInitializer(clang::VarDecl*, clang::DeclarationName, clang::QualType, clang::TypeSourceInfo*, clang::SourceRange, bool, clang::Expr*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x68152fd)
#38 0x000000000681a0c7 clang::Sema::DeduceVariableDeclarationType(clang::VarDecl*, bool, clang::Expr*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x681a0c7)
#39 0x000000000683ae62 clang::Sema::AddInitializerToDecl(clang::Decl*, clang::Expr*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x683ae62)
#40 0x00000000064c4655 clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x64c4655)
#41 0x00000000064d3bd9 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+++0x64d3bd9)
#42 0x00000000064936de clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x64936de)
#43 0x0000000006493e99 clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6493e99)
#44 0x000000000649b673 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x649b673)
#45 0x000000000649c54d clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x649c54d)
#46 0x000000000648e9da clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x648e9da)
#47 0x0000000004838928 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4838928)
#48 0x0000000004b01685 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4b01685)
#49 0x0000000004a84ffe clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4a84ffe)
#50 0x0000000004bef61e clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4bef61e)
#51 0x0000000000d53f3f cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xd53f3f)
#52 0x0000000000d4b8fa ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#53 0x0000000004881209 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
#54 0x0000000003dc1e24 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3dc1e24)
#55 0x00000000048817ff 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
#56 0x0000000004843ebd clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4843ebd)
#57 0x0000000004844f3e 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+++0x4844f3e)
#58 0x000000000484ce55 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x484ce55)
#59 0x0000000000d50d8c clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xd50d8c)
#60 0x0000000000c18724 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xc18724)
#61 0x00007bc03b429d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#62 0x00007bc03b429e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#63 0x0000000000d4b3a5 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xd4b3a5)
```
</details>
![]()
_______________________________________________
llvm-bugs mailing list
llvm-bugs@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
