1 files changed, 4 insertions, 0 deletions
diff --git a/clang/lib/Sema/SemaConcept.cpp b/clang/lib/Sema/SemaConcept.cpp
index 75ccefa..d4c9d04 100644
--- a/clang/lib/Sema/SemaConcept.cpp
+++ b/clang/lib/Sema/SemaConcept.cpp
@@ -532,6 +532,10 @@ static ExprResult calculateConstraintSatisfaction(
 
     std::optional<unsigned>
     EvaluateFoldExpandedConstraintSize(const CXXFoldExpr *FE) const {
+
+      // We should ignore errors in the presence of packs of different size.
+      Sema::SFINAETrap Trap(S);
+
       Expr *Pattern = FE->getPattern();
 
       SmallVector<UnexpandedParameterPack, 2> Unexpanded;