[PHP-BUG] Bug #71955 [NEW]: shmop_open: creating infinite amount of segments

From:             kakkau at grr dot la
Operating system: 
PHP version:      Irrelevant
Package:          PHP Language Specification
Bug Type:         Bug
Bug description:shmop_open: creating infinite amount of segments

Description:
------------
1. Run shmop_open with $key=0 and $flags="n" multiple times.
2. Wonder about a missing warning when using the same key for creation.
3. Check the output of ipcs -m. There should show up multiple segments
now.

For other integers <> 0 shmop_open works as expected

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

$res = shmop_open(0,"n",0600,1024);
$res = shmop_open(0,"n",0600,1024);

?>

Expected result:
----------------
At least a warning should be thrown w/o creating another segment.

Warning: shmop_open(): unable to attach or create shared memory segment
in php shell code on line 1

Call Stack:
   10.9282     120780   1. {main}() php shell code:0
   10.9282     120920   2. shmop_open() php shell code:1


-- 
Edit bug report at https://bugs.php.net/bug.php?id=71955&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=71955&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=71955&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=71955&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=71955&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=71955&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=71955&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=71955&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=71955&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=71955&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=71955&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=71955&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=71955&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=71955&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71955&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=71955&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=71955&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=71955&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=71955&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=71955&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=71955&r=mysqlcfg