no matching function for call to object of type <lambda>

[namniav]

https://godbolt.org/z/83cMvdrYe

#define LAMBDA ([]<class T>(T i){return i;})


// OK
template<int N = 0,
         int M = LAMBDA(N)>
consteval int test1() {
    return M;
}

template<auto F = LAMBDA>
consteval auto gen() {
  return F;
}

// GCC:   internal compiler error: in dependent_type_p, at cp/pt.cc:27243
// Clang: no matching function for call to object of type '(lambda at <source>:3:19)'
// MSVC:  OK
template<int N = 0,
         int M = gen()(N)>
consteval int test2() {
    return M;
}

int main() {
    return test1() + test2();
}

Clang-trunk(copied from godbolt compiling the code above)

<source>:20:18: error: no matching function for call to object of type '(lambda at <source>:11:19)'
         int M = gen()(N)>
                 ^~~~~
<source>:11:19: note: candidate template ignored: couldn't infer template argument 'T'
template<auto F = LAMBDA>
                  ^
<source>:1:17: note: expanded from macro 'LAMBDA'
#define LAMBDA ([]<class T>(T i){return i;})
                ^
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-trunk/bin/clang++ -g -o /app/output.s -mllvm --x86-asm-syntax=intel -S --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics -fno-crash-diagnostics -std=c++20 <source>
1.	<source>:26:18: current parser token ')'
2.	<source>:25:12: parsing function body 'main'
3.	<source>:25:12: in compound statement ('{}')
 #0 0x000055b2f1da05ff PrintStackTraceSignalHandler(void*) Signals.cpp:0:0
 #1 0x000055b2f1d9e4d0 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x359e4d0)
 #2 0x000055b2f1cd80e8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
 #3 0x00007ff5f90733c0 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x143c0)
 #4 0x000055b2f4649ecd clang::ASTContext::getSubstTemplateTypeParmType(clang::TemplateTypeParmType const*, clang::QualType) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x5e49ecd)
 #5 0x000055b2f43dddf5 clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformType(clang::TypeLocBuilder&, clang::TypeLoc) SemaTemplateInstantiate.cpp:0:0
 #6 0x000055b2f43e047a clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformType(clang::TypeSourceInfo*) SemaTemplateInstantiate.cpp:0:0
 #7 0x000055b2f43e6471 clang::Sema::SubstType(clang::TypeSourceInfo*, clang::MultiLevelTemplateArgumentList const&, clang::SourceLocation, clang::DeclarationName, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x5be6471)
 #8 0x000055b2f43edca7 clang::Sema::SubstParmVarDecl(clang::ParmVarDecl*, clang::MultiLevelTemplateArgumentList const&, int, llvm::Optional<unsigned int>, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x5bedca7)
 #9 0x000055b2f43eef32 clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformFunctionTypeParams(clang::SourceLocation, llvm::ArrayRef<clang::ParmVarDecl*>, clang::QualType const*, clang::FunctionType::ExtParameterInfo const*, llvm::SmallVectorImpl<clang::QualType>&, llvm::SmallVectorImpl<clang::ParmVarDecl*>*, clang::Sema::ExtParameterInfoBuilder&) SemaTemplateInstantiate.cpp:0:0
#10 0x000055b2f43d1791 clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformLambdaExpr(clang::LambdaExpr*) SemaTemplateInstantiate.cpp:0:0
#11 0x000055b2f43d2d11 clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformExpr(clang::Expr*) SemaTemplateInstantiate.cpp:0:0
#12 0x000055b2f43dc4b5 clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformParenExpr(clang::ParenExpr*) SemaTemplateInstantiate.cpp:0:0
#13 0x000055b2f43d2e53 clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformExpr(clang::Expr*) SemaTemplateInstantiate.cpp:0:0
#14 0x000055b2f43da177 clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformCallExpr(clang::CallExpr*) SemaTemplateInstantiate.cpp:0:0
#15 0x000055b2f43d29e3 clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformExpr(clang::Expr*) SemaTemplateInstantiate.cpp:0:0
#16 0x000055b2f43d2a6f clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformExpr(clang::Expr*) SemaTemplateInstantiate.cpp:0:0
#17 0x000055b2f43fa2c6 clang::Sema::SubstExpr(clang::Expr*, clang::MultiLevelTemplateArgumentList const&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x5bfa2c6)
#18 0x000055b2f42df964 SubstDefaultTemplateArgument(clang::Sema&, clang::TemplateDecl*, clang::SourceLocation, clang::SourceLocation, clang::NonTypeTemplateParmDecl*, llvm::SmallVectorImpl<clang::TemplateArgument>&) SemaTemplate.cpp:0:0
#19 0x000055b2f42dfea7 clang::Sema::SubstDefaultTemplateArgumentIfAvailable(clang::TemplateDecl*, clang::SourceLocation, clang::SourceLocation, clang::Decl*, llvm::SmallVectorImpl<clang::TemplateArgument>&, bool&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x5adfea7)
#20 0x000055b2f43a6345 clang::Sema::FinishTemplateArgumentDeduction(clang::FunctionTemplateDecl*, llvm::SmallVectorImpl<clang::DeducedTemplateArgument>&, unsigned int, clang::FunctionDecl*&, clang::sema::TemplateDeductionInfo&, llvm::SmallVectorImpl<clang::Sema::OriginalCallArg> const*, bool, llvm::function_ref<bool ()>) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x5ba6345)
#21 0x000055b2f43a7f9e void llvm::function_ref<void ()>::callback_fn<clang::Sema::DeduceTemplateArguments(clang::FunctionTemplateDecl*, clang::TemplateArgumentListInfo*, llvm::ArrayRef<clang::Expr*>, clang::FunctionDecl*&, clang::sema::TemplateDeductionInfo&, bool, llvm::function_ref<bool (llvm::ArrayRef<clang::QualType>)>)::'lambda1'()>(long) SemaTemplateDeduction.cpp:0:0
#22 0x000055b2f3cfe70f clang::Sema::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x54fe70f)
#23 0x000055b2f43b4164 clang::Sema::DeduceTemplateArguments(clang::FunctionTemplateDecl*, clang::TemplateArgumentListInfo*, llvm::ArrayRef<clang::Expr*>, clang::FunctionDecl*&, clang::sema::TemplateDeductionInfo&, bool, llvm::function_ref<bool (llvm::ArrayRef<clang::QualType>)>) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x5bb4164)
#24 0x000055b2f426fa64 clang::Sema::AddTemplateOverloadCandidate(clang::FunctionTemplateDecl*, clang::DeclAccessPair, clang::TemplateArgumentListInfo*, llvm::ArrayRef<clang::Expr*>, clang::OverloadCandidateSet&, bool, bool, bool, clang::CallExpr::ADLCallKind, clang::OverloadCandidateParamOrder) (.constprop.1384) SemaOverload.cpp:0:0
#25 0x000055b2f4270c54 clang::Sema::AddOverloadedCallCandidates(clang::UnresolvedLookupExpr*, llvm::ArrayRef<clang::Expr*>, clang::OverloadCandidateSet&, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x5a70c54)
#26 0x000055b2f4270fca clang::Sema::buildOverloadedCallSet(clang::Scope*, clang::Expr*, clang::UnresolvedLookupExpr*, llvm::MutableArrayRef<clang::Expr*>, clang::SourceLocation, clang::OverloadCandidateSet*, clang::ActionResult<clang::Expr*, true>*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x5a70fca)
#27 0x000055b2f4277575 clang::Sema::BuildOverloadedCallExpr(clang::Scope*, clang::Expr*, clang::UnresolvedLookupExpr*, clang::SourceLocation, llvm::MutableArrayRef<clang::Expr*>, clang::SourceLocation, clang::Expr*, bool, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x5a77575)
#28 0x000055b2f3fdf103 clang::Sema::BuildCallExpr(clang::Scope*, clang::Expr*, clang::SourceLocation, llvm::MutableArrayRef<clang::Expr*>, clang::SourceLocation, clang::Expr*, bool, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x57df103)
#29 0x000055b2f3fe3a34 clang::Sema::ActOnCallExpr(clang::Scope*, clang::Expr*, clang::SourceLocation, llvm::MutableArrayRef<clang::Expr*>, clang::SourceLocation, clang::Expr*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x57e3a34)
#30 0x000055b2f3c414eb clang::Parser::ParsePostfixExpressionSuffix(clang::ActionResult<clang::Expr*, true>) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x54414eb)
#31 0x000055b2f3c3b707 clang::Parser::ParseCastExpression(clang::Parser::CastParseKind, bool, bool&, clang::Parser::TypeCastState, bool, bool*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x543b707)
#32 0x000055b2f3c3e126 clang::Parser::ParseCastExpression(clang::Parser::CastParseKind, bool, clang::Parser::TypeCastState, bool, bool*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x543e126)
#33 0x000055b2f3c3e1b8 clang::Parser::ParseAssignmentExpression(clang::Parser::TypeCastState) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x543e1b8)
#34 0x000055b2f3c40659 clang::Parser::ParseExpression(clang::Parser::TypeCastState) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x5440659)
#35 0x000055b2f3c99dbf clang::Parser::ParseReturnStatement() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x5499dbf)
#36 0x000055b2f3c9ff3f clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributesWithRange&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x549ff3f)
#37 0x000055b2f3ca115d clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x54a115d)
#38 0x000055b2f3c9c022 clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x549c022)
#39 0x000055b2f3c9cec3 clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x549cec3)
#40 0x000055b2f3bf14ea clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x53f14ea)
#41 0x000055b2f3c1abed clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x541abed)
#42 0x000055b2f3bec791 clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributesWithRange&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x53ec791)
#43 0x000055b2f3becee1 clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributesWithRange&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (.part.281) Parser.cpp:0:0
#44 0x000055b2f3bf2c99 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributesWithRange&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x53f2c99)
#45 0x000055b2f3bf41a1 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x53f41a1)
#46 0x000055b2f3be79cb clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x53e79cb)
#47 0x000055b2f2d612fd clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x45612fd)
#48 0x000055b2f2757731 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3f57731)
#49 0x000055b2f26f15c2 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3ef15c2)
#50 0x000055b2f28245d3 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x40245d3)
#51 0x000055b2ef97b9c4 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x117b9c4)
#52 0x000055b2ef97797d ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&) driver.cpp:0:0
#53 0x000055b2f258cbe5 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, bool*) const::'lambda'()>(long) Job.cpp:0:0
#54 0x000055b2f1cd86d3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x34d86d3)
#55 0x000055b2f258ecb8 clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, bool*) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3d8ecb8)
#56 0x000055b2f25617ba clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3d617ba)
#57 0x000055b2f25622ff clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&) const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3d622ff)
#58 0x000055b2f256ad65 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&) (/opt/compiler-explorer/clang-trunk/bin/clang+++0x3d6ad65)
#59 0x000055b2ef8a81e2 main (/opt/compiler-explorer/clang-trunk/bin/clang+++0x10a81e2)
#60 0x00007ff5f8b210b3 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x240b3)
#61 0x000055b2ef9774fa _start (/opt/compiler-explorer/clang-trunk/bin/clang+++0x11774fa)
clang-15: error: clang frontend command failed with exit code 139 (use -v to see invocation)
Compiler returned: 139

[namniav]

If this is confirmed a valid bug report, can anyone file one to GCC ? (I have no account to do so.)

[llvmbot]

@llvm/issue-subscribers-clang-frontend

[cor3ntin]

This no longer crash (but still fails to compile)

[cor3ntin]

This was fixed!