Index: clang/lib/Sema/SemaInit.cpp
===================================================================
--- clang/lib/Sema/SemaInit.cpp
+++ clang/lib/Sema/SemaInit.cpp
@@ -5827,6 +5827,8 @@
     return;
   }
 
+  assert(Initializer && "Intializer must be non-null");
+
   //     - If the destination type is an array of characters, an array of
   //       char16_t, an array of char32_t, or an array of wchar_t, and the
   //       initializer is a string literal, see 8.5.2.