1 files changed, 3 insertions, 2 deletions
diff --git a/clang/lib/Sema/SemaTemplateVariadic.cpp b/clang/lib/Sema/SemaTemplateVariadic.cpp
index 86268b5..dfcc78d 100644
--- a/clang/lib/Sema/SemaTemplateVariadic.cpp
+++ b/clang/lib/Sema/SemaTemplateVariadic.cpp
@@ -1220,10 +1220,11 @@ ExprResult Sema::ActOnCXXFoldExpr(Scope *S, SourceLocation LParenLoc, Expr *LHS,
   if (!LHS || !RHS) {
     Expr *Pack = LHS ? LHS : RHS;
     assert(Pack && "fold expression with neither LHS nor RHS");
-    DiscardOperands();
-    if (!Pack->containsUnexpandedParameterPack())
+    if (!Pack->containsUnexpandedParameterPack()) {
+      DiscardOperands();
       return Diag(EllipsisLoc, diag::err_pack_expansion_without_parameter_packs)
              << Pack->getSourceRange();
+    }
   }
 
   BinaryOperatorKind Opc = ConvertTokenKindToBinaryOpcode(Operator);