diff --git a/clang/lib/CodeGen/CGClass.cpp b/clang/lib/CodeGen/CGClass.cpp
index 2789bb2..2cb5549 100644
--- a/clang/lib/CodeGen/CGClass.cpp
+++ b/clang/lib/CodeGen/CGClass.cpp
@@ -1305,6 +1305,7 @@
   if (ClassDecl->hasTrivialDestructor()) return;
 
   const CXXDestructorDecl *D = ClassDecl->getDestructor();
+  assert(D && D->isUsed() && "destructor not marked as used!");
   PushDestructorCleanup(D, Addr);
 }