--- c-family/c-common.c (revision 190939)
+++ c-family/c-common.c (working copy)
@@ -1440,7 +1440,10 @@ c_fully_fold_internal (tree expr, bool i
       TREE_NO_WARNING (ret) = 1;
     }
   if (ret != expr)
-    protected_set_expr_location (ret, loc);
+    {
+      protected_set_expr_location (ret, loc);
+      duplicate_expr_locations (ret, expr);
+    }
   return ret;
 }