================
@@ -5004,6 +5004,20 @@ static bool CheckDeducedPlaceholderConstraints(Sema &S,
const AutoType &Type,
return true;
MultiLevelTemplateArgumentList MLTAL(Concept, CanonicalConverted,
/*Final=*/false);
+ // Build up an EvaluationContext with an ImplicitConceptSpecializationDecl so
+ // that the template arguments of the constraint can be preserved. For
+ // example:
+ //
+ // template <class T>
+ // concept C = []<D U = void>() { return true; }();
+ //
+ // We need the argument for T while evaluating type constraint D in
+ // building the CallExpr to the lambda.
+ EnterExpressionEvaluationContext EECtx(
+ S, Sema::ExpressionEvaluationContext::ConstantEvaluated,
----------------
cor3ntin wrote:
Should that not be UnevaluatedContext?
https://eel.is/c++draft/temp.concept#6
(I appreciate the great comment, thanks!)
https://github.com/llvm/llvm-project/pull/93945
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
