Bug #54119 [NEW]: Bogus behavior of Zend in relation to stream wrappers

From: Date: Mon, 28 Feb 2011 12:21:30 +0000
Subject: Bug #54119 [NEW]: Bogus behavior of Zend in relation to stream wrappers
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-159098@lists.php.net to get a copy of this message 
From:             
Operating system: Linux
PHP version:      5.3.5
Package:          Filesystem function related
Bug Type:         Bug
Bug description:Bogus behavior of Zend in relation to stream wrappers

Description:
------------
See test script: when returning a undefined key from stream_stat(), the
behavior 
of the Zend interpretor changes.

I confirmed this on PHP 5.3.5, pjoye reproduced it separately.

Test script:
---------------
--TEST--
Test that user space streams do not break the fabric of the universe.
--FILE--
<?php

class UserSpaceStream {
  public function stream_open($uri, $mode, $options, &$opened_path) {
    return TRUE;
  }

  public function stream_read($count) {
    return '';
  }

  public function stream_write($data) {
    return TRUE;
  }

  public function stream_eof() {
    return FALSE;
  }

  public function stream_stat() {
    $stat = array();

    // This triggers (correctly) a "Notice: Undefined index: size in %s on
line %d".
    $array = array();
    $stat['size'] = $array['size'];

    return $stat;
  }

}

stream_wrapper_register("test", "UserSpaceStream");

// Alone, the assignment of a key to an undefined variable is legal.
$undefined_variable['key'] = 'value';

// This fstat() call triggers something weird...
$h = fopen('test://anyfile', 'r');
fstat($h);

// ... from this point, PHP triggers a "Warning: Cannot use a scalar value
as
// an array" for each assignement of array keys to undefined variables.
$undefined_variable2['key'] = 'value';

?>
--EXPECTF--
Notice: Undefined index: size in %s on line %d



-- 
Edit bug report at http://bugs.php.net/bug.php?id=54119&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=54119&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=54119&r=trysnapshot53
Try a snapshot (trunk):              http://bugs.php.net/fix.php?id=54119&r=trysnapshottrunk
Fixed in SVN:                        http://bugs.php.net/fix.php?id=54119&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=54119&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=54119&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=54119&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=54119&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=54119&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=54119&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=54119&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=54119&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=54119&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=54119&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=54119&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=54119&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=54119&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=54119&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=54119&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=54119&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=54119&r=mysqlcfg

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