================
@@ -5637,6 +5638,38 @@ static bool EvaluateUnaryTypeTrait(Sema &Self, TypeTrait
UTT,
return false;
case UTT_IsTriviallyEqualityComparable:
return isTriviallyEqualityComparableType(Self, T, KeyLoc);
+ case UTT_IsImplicitLifetime: {
+ DiagnoseVLAInCXXTypeTrait(Self, TInfo,
+ tok::kw___builtin_is_implicit_lifetime);
+
+ // [basic.types.general] p9
+ // Scalar types, implicit-lifetime class types ([class.prop]),
+ // array types, and cv-qualified versions of these types
+ // are collectively called implicit-lifetime types.
+ QualType UnqualT = T->getCanonicalTypeUnqualified();
----------------
AaronBallman wrote:
How should `_Atomic int` behave? We support that as an extension in C++
https://github.com/llvm/llvm-project/pull/101807
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