Bug #65915 [NEW]: Inconsistent results with require return value

From: Date: Wed, 16 Oct 2013 13:30:37 +0000
Subject: Bug #65915 [NEW]: Inconsistent results with require return value
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-182313@lists.php.net to get a copy of this message
From:             arjen at react dot com
Operating system: Linux
PHP version:      5.5.4
Package:          opcache
Bug Type:         Bug
Bug description:Inconsistent results with require return value 

Description:
------------
opcache seems to 'cache' the return value of a require statement, even
if opcache_invalidate or opcache_reset is called. A test script which
returns a closure is written to disk, required and result method is
called. File is overwritten and called again. Output should differ, but
is the same. A helper var written to the same file IS correctly
updated.

Result is wrong most of the times.

php -d zend_extension=/usr/lib/php/modules/opcache.so -d
opcache.enabled=1 -d opcache.enable_cli=1 -d
opcache.optimization_level=0xffffffff public_html/php/opcache.php

opcache.optimization_level=0x00000000 also fails.

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

$tmp = tempnam(sys_get_temp_dir(), 'test');

file_put_contents($tmp, '<?php $s = ' . microtime(true) . ';return
function(){ return "a";};');

$f = require $tmp;
var_dump($s, $f());

sleep(2);
file_put_contents($tmp, '<?php $s = ' . microtime(true) . ';return
function(){ return "ab";};');

opcache_invalidate($tmp, true);
$f = require $tmp;

var_dump($s, $f());
unset($f);
opcache_reset();

$f = require $tmp;
var_dump($s, $f());


Expected result:
----------------
double(1381930079.4517)
string(1) "a"
double(1381930079.452)
string(2) "ab"
double(1381930079.452)
string(2) "ab"


Actual result:
--------------
double(1381930079.4517)
string(1) "a"
double(1381930079.452)
string(1) "a"
double(1381930079.452)
string(1) "a"


-- 
Edit bug report at https://bugs.php.net/bug.php?id=65915&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=65915&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=65915&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=65915&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=65915&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=65915&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=65915&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=65915&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=65915&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=65915&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=65915&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=65915&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=65915&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=65915&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=65915&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=65915&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=65915&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=65915&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=65915&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=65915&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=65915&r=mysqlcfg



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