diff --git a/clang/lib/AST/Interp/ByteCodeExprGen.cpp b/clang/lib/AST/Interp/ByteCodeExprGen.cpp
index c6c4c787e5d84..ad838755c47a5 100644
--- a/clang/lib/AST/Interp/ByteCodeExprGen.cpp
+++ b/clang/lib/AST/Interp/ByteCodeExprGen.cpp
@@ -1806,6 +1806,7 @@ bool ByteCodeExprGen<Emitter>::VisitCXXMemberCallExpr(
 template <class Emitter>
 bool ByteCodeExprGen<Emitter>::VisitCXXDefaultInitExpr(
     const CXXDefaultInitExpr *E) {
+  assert(classify(E->getType()));
   return this->visit(E->getExpr());
 }