[PHP-BUG] Bug #72119 [NEW]: Interface declaration compatibility regression

From:             ben dot davies at gmail dot com
Operating system: 
PHP version:      Next Minor Version
Package:          PHP Language Specification
Bug Type:         Bug
Bug description:Interface declaration compatibility regression

Description:
------------
I wanted to raise this against 7.0.6, but it was not available in the
list above, despite being released?

There seems to be a regression in interface method declaration
compatibility checking.
The below test script only fails on 7.0.6.

It also only fails if the $baz is type hinted as array.

Test script:
---------------
<?php

interface Foo {
    public function bar(array $baz = null);
}

class Hello implements Foo {
    public function bar(array $baz = [])
    {

    }
}

Expected result:
----------------
N/A

Actual result:
--------------
Fatal error: Declaration of Hello::bar(array $baz = Array) must be
compatible with Foo::bar(array $baz = NULL) in /in/VhEtd on line 7

Process exited with code 255.

-- 
Edit bug report at https://bugs.php.net/bug.php?id=72119&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=72119&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=72119&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=72119&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=72119&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=72119&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=72119&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=72119&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=72119&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=72119&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=72119&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=72119&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=72119&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=72119&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=72119&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=72119&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=72119&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=72119&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=72119&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=72119&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=72119&r=mysqlcfg