Skip to content

[clang] fix using enum redecl in template regression #159996

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Sep 21, 2025
+13 −2
Merged

[clang] fix using enum redecl in template regression #159996

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 3 additions & 2 deletions clang/lib/Sema/SemaCXXScopeSpec.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -220,10 +220,11 @@ bool Sema::RequireCompleteDeclContext(CXXScopeSpec &SS,
///
bool Sema::RequireCompleteEnumDecl(EnumDecl *EnumD, SourceLocation L,
CXXScopeSpec *SS) {
if (EnumD->isCompleteDefinition()) {
if (EnumDecl *Def = EnumD->getDefinition();
Def && Def->isCompleteDefinition()) {
// If we know about the definition but it is not visible, complain.
NamedDecl *SuggestedDef = nullptr;
if (!hasReachableDefinition(EnumD, &SuggestedDef,
if (!hasReachableDefinition(Def, &SuggestedDef,
/*OnlyNeedComplete*/ false)) {
// If the user is going to see an error here, recover by making the
// definition visible.
Expand Down
10 changes: 10 additions & 0 deletions clang/test/SemaCXX/cxx20-using-enum.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -288,4 +288,14 @@ struct S {
};
};
}

namespace Redecl {
enum class A : int { X };
enum class A : int;
template <class> struct B {
using enum A;
using Z = decltype(X);
};
template struct B<int>;
} // namespace Redecl
#endif
Loading