1--TEST-- 2bug #71428.1: inheritance with null default values 3--FILE-- 4<?php 5class A { 6 public function m(array $a = null) {} 7} 8class B extends A { 9 public function m(array $a = []) {} 10} 11?> 12--EXPECTF-- 13Fatal error: Declaration of B::m(array $a = []) must be compatible with A::m(?array $a = null) in %s on line %d 14