[clang] fix using enum redecl in template regression#159996
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This fixes a regression reported here: #155313 (comment) Since this regression was never released, there are no release notes.
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@llvm/pr-subscribers-clang Author: Matheus Izvekov (mizvekov) ChangesThis fixes a regression reported here: #155313 (comment) Since this regression was never released, there are no release notes. Full diff: https://github.com/llvm/llvm-project/pull/159996.diff 2 Files Affected:
diff --git a/clang/lib/Sema/SemaCXXScopeSpec.cpp b/clang/lib/Sema/SemaCXXScopeSpec.cpp
index e89243b9d767a..97ba1a510cee4 100644
--- a/clang/lib/Sema/SemaCXXScopeSpec.cpp
+++ b/clang/lib/Sema/SemaCXXScopeSpec.cpp
@@ -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.
diff --git a/clang/test/SemaCXX/cxx20-using-enum.cpp b/clang/test/SemaCXX/cxx20-using-enum.cpp
index 775b65c5a8d8e..0ae6f4c9a07b6 100644
--- a/clang/test/SemaCXX/cxx20-using-enum.cpp
+++ b/clang/test/SemaCXX/cxx20-using-enum.cpp
@@ -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
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/95/builds/18348 Here is the relevant piece of the build log for the reference |
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Sep 23, 2025
* main: (1562 commits) Document Policy on supporting newer C++ standard in LLVM codebase (llvm#156823) [MLIR][Transform][SMT] Introduce transform.smt.constrain_params (llvm#159450) Reapply "[compiler-rt] Remove %T from shared object substitutions (llvm#155302)" [NFC] [IndVarSimplify] Add non-overflowing usub test (llvm#159683) [Github] Remove separate tools checkout from pr-code workflows (llvm#159967) [clang] fix using enum redecl in template regression (llvm#159996) [DAG] Skip `mstore` combine for `<1 x ty>` vectors (llvm#159915) [mlir] Expose optional `PatternBenefit` to `func` populate functions (NFC) (llvm#159986) [LV] Set correct costs for interleave group members. [clang] ast-dump: use template pattern for `instantiated_from` (llvm#159952) [ARM] ha-alignstack-call.ll - regenerate test checks (llvm#159988) [LLD][MachO] Silence warning when building with MSVC [llvm][Analysis] Silence warning when building with MSVC [LV] Skip select cost for invariant divisors in legacy cost model. [Clang] Fix an error-recovery crash after d1a80de (llvm#159976) [VPlanPatternMatch] Introduce m_ConstantInt (llvm#159558) [GlobalISel] Add G_ABS computeKnownBits (llvm#154413) [gn build] Port 4cabd1e Reland "[clangd] Add feature modules registry" (llvm#154836) [LV] Also handle non-uniform scalarized loads when processing AddrDefs. ...
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This fixes a regression reported here: #155313 (comment)
Since this regression was never released, there are no release notes.