Index: emit-rtl.c
===================================================================
--- emit-rtl.c	(revision 160379)
+++ emit-rtl.c	(working copy)
@@ -1668,12 +1668,7 @@ set_mem_attributes_minus_bitpos (rtx ref
       if (base && DECL_P (base)
 	  && TREE_READONLY (base)
 	  && (TREE_STATIC (base) || DECL_EXTERNAL (base)))
-	{
-	  tree base_type = TREE_TYPE (base);
-	  gcc_assert (!(base_type && TYPE_NEEDS_CONSTRUCTING (base_type))
-		      || DECL_ARTIFICIAL (base));
-	  MEM_READONLY_P (ref) = 1;
-	}
+	MEM_READONLY_P (ref) = 1;
 
       /* If this expression uses it's parent's alias set, mark it such
 	 that we won't change it.  */