Bug #74257 [NEW]: Leading slash in namespace declaration

From: Date: Thu, 16 Mar 2017 12:47:21 +0000
Subject: Bug #74257 [NEW]: Leading slash in namespace declaration
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-207874@lists.php.net to get a copy of this message 
From:             david at grudl dot com
Operating system: 
PHP version:      7.1.2
Package:          Compile Failure
Bug Type:         Bug
Bug description:Leading slash in namespace declaration

Description:
------------
Leading slash in namespace declaration can cause silent ignorance of
namespace declaration.

https://3v4l.org/DEZBT

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

define('X', 'Y');

namespace \X;

class Test
{
}

echo Test::class;


Expected result:
----------------
Fatal error: Namespace declaration statement has to be the very first
statement or after any declare call in the script

Actual result:
--------------
'Test'

-- 
Edit bug report at https://bugs.php.net/bug.php?id=74257&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=74257&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=74257&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=74257&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=74257&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=74257&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=74257&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=74257&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=74257&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=74257&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=74257&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=74257&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=74257&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=74257&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=74257&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=74257&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=74257&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=74257&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=74257&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=74257&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=74257&r=mysqlcfg

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