constexpr.c (cxx_eval_builtin_function_call): Use fold_builtin_call_array.

	* constexpr.c (cxx_eval_builtin_function_call): Use
	fold_builtin_call_array.

From-SVN: r217617

gcc/cp/ChangeLog

 2014-11-15  Jason Merrill  <jason@redhat.com>
 
+	* constexpr.c (cxx_eval_builtin_function_call): Use
+	fold_builtin_call_array.
+
 	* constexpr.c (cx_check_missing_mem_inits): Clarify error message.
 
 2014-11-14  Paolo Carlini  <paolo.carlini@oracle.com>

gcc/cp/constexpr.c

@@ -995,9 +995,8 @@ cxx_eval_builtin_function_call (const constexpr_ctx *ctx, tree t,
     }
   if (*non_constant_p)
     return t;
-  new_call = build_call_array_loc (EXPR_LOCATION (t), TREE_TYPE (t),
-                                   CALL_EXPR_FN (t), nargs, args);
-  new_call = fold (new_call);
+  new_call = fold_builtin_call_array (EXPR_LOCATION (t), TREE_TYPE (t),
+				      CALL_EXPR_FN (t), nargs, args);
   VERIFY_CONSTANT (new_call);
   return new_call;
 }