diff --git a/lib/AST/ExprConstant.cpp b/lib/AST/ExprConstant.cpp
index 85aa5ee..b69a805 100644
--- a/lib/AST/ExprConstant.cpp
+++ b/lib/AST/ExprConstant.cpp
@@ -2225,8 +2225,8 @@
   // essential for unions, where the operations performed by the constructor
   // cannot be represented by ctor-initializers.
   if (Definition->isDefaulted() &&
-      ((Definition->isCopyConstructor() && RD->hasTrivialCopyConstructor()) ||
-       (Definition->isMoveConstructor() && RD->hasTrivialMoveConstructor()))) {
+      ((Definition->isCopyConstructor() && Definition->isTrivial()) ||
+       (Definition->isMoveConstructor() && Definition->isTrivial()))) {
     LValue RHS;
     RHS.setFrom(ArgValues[0]);
     CCValue Value;