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[clang] fix obtaining EnumDecl for UsingEnumDecl #156127

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Merged
merged 1 commit into from
Aug 30, 2025
Merged

[clang] fix obtaining EnumDecl for UsingEnumDecl #156127

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2 changes: 1 addition & 1 deletion clang/include/clang/AST/DeclCXX.h
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Original file line number Diff line number Diff line change
Expand Up @@ -3826,7 +3826,7 @@ class UsingEnumDecl : public BaseUsingDecl, public Mergeable<UsingEnumDecl> {

public:
EnumDecl *getEnumDecl() const {
return cast<clang::EnumType>(EnumType->getType())->getOriginalDecl();
return EnumType->getType()->castAs<clang::EnumType>()->getOriginalDecl();
}

static UsingEnumDecl *Create(ASTContext &C, DeclContext *DC,
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12 changes: 12 additions & 0 deletions clang/test/SemaTemplate/using-decl.cpp
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Expand Up @@ -14,3 +14,15 @@ namespace UsingInGenericLambda {
}
void e() { c<int>(); }
}

namespace UsingUsingEnum {
namespace foo {
enum class EnumOne {};
}
using foo::EnumOne;

template <class> void t() {
using enum EnumOne;
}
template void t<void>();
} // namespace UsingUsingEnum