[AArch64] Function multiversioning crashes on unspecified number of parameters function

[ilinpv]

clang --target=aarch64-linux-gnu -rtlib=compiler-rt attr-target-version-runtime.c -O2

attr-target-version-runtime.c
int __attribute__((target_version("fp+aes+pmull+rcpc"))) unspec_args() { return -1; }
int __attribute__((target_version("default"))) unspec_args() { return 0; }
int cargs() { return unspec_args(); }

Stack trace:

1.	../attr-target-version-runtime.c:3:34: current parser token ')'
2.	../attr-target-version-runtime.c:3:13: parsing function body 'cargs'
3.	../attr-target-version-runtime.c:3:13: in compound statement ('{}')
...
#11 0x00007f4fb71bc454 clang::Sema::AddOverloadCandidate(clang::FunctionDecl*, clang::DeclAccessPair, llvm::ArrayRef<clang::Expr*>, clang::OverloadCandidateSet&, bool, bool, bool, bool, clang::CallExpr::ADLCallKind, llvm::MutableArrayRef<clang::ImplicitConversionSequence>, clang::OverloadCandidateParamOrder, bool) llvm-project/clang/lib/Sema/SemaOverload.cpp:6530:3
#12 0x00007f4fb6e5f134 clang::Sema::DiagnoseEmptyLookup(clang::Scope*, clang::CXXScopeSpec&, clang::LookupResult&, clang::CorrectionCandidateCallback&, clang::TemplateArgumentListInfo*, llvm::ArrayRef<clang::Expr*>, clang::TypoExpr**) llvm-project/clang/lib/Sema/SemaExpr.cpp:2547:15
#13 0x00007f4fb71d1629 BuildRecoveryCallExpr(clang::Sema&, clang::Scope*, clang::Expr*, clang::UnresolvedLookupExpr*, clang::SourceLocation, llvm::MutableArrayRef<clang::Expr*>, clang::SourceLocation, bool, bool) llvm-project/clang/lib/Sema/SemaOverload.cpp:0:17
#14 0x00007f4fb71d1629 FinishOverloadedCallExpr(clang::Sema&, clang::Scope*, clang::Expr*, clang::UnresolvedLookupExpr*, clang::SourceLocation, llvm::MutableArrayRef<clang::Expr*>, clang::SourceLocation, clang::Expr*, clang::OverloadCandidateSet*, clang::OverloadCandidate**, clang::OverloadingResult, bool) llvm-project/clang/lib/Sema/SemaOverload.cpp:13564:27
#15 0x00007f4fb71d085e clang::Sema::BuildOverloadedCallExpr(clang::Scope*, clang::Expr*, clang::UnresolvedLookupExpr*, clang::SourceLocation, llvm::MutableArrayRef<clang::Expr*>, clang::SourceLocation, clang::Expr*, bool, bool) llvm-project/clang/lib/Sema/SemaOverload.cpp:13669:10
#16 0x00007f4fb6e57dbe clang::Sema::BuildCallExpr(clang::Scope*, clang::Expr*, clang::SourceLocation, llvm::MutableArrayRef<clang::Expr*>, clang::SourceLocation, clang::Expr*, bool, bool) llvm-project/clang/lib/Sema/SemaExpr.cpp:7207:16
...

[llvmbot]

@llvm/issue-subscribers-clang-frontend