Edit report at https://bugs.php.net/bug.php?id=66773&edit=1
ID: 66773
Comment by: jpauli@php.net
Reported by: carl dot vuorinen at w3 dot fi
Summary: Autoload with Opcache allows importing conflicting
class name to namespace
Status: Open
Type: Bug
Package: opcache
Operating System: Linux (Ubuntu)
PHP Version: 5.5.9
Block user comment: N
Private report: N
New Comment:
Reproduced.
Seems like a bug.
@dmitry: any idea ? I found that the compiler class_table is reseted between each compilation by
opcache (https://github.com/zendtech/ZendOptimizerPlus/blob/master/ZendAccelerator.c#L1411), thus
the class can't be found and detected as already used.
Previous Comments:
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[2014-05-27 01:11:55] adrien dot crivelli at gmail dot com
Same issue here. The test script could be reproduced:
$ lsb_release -a
LSB
Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch
Distributor ID: Ubuntu
Description: Ubuntu 14.04 LTS
Release: 14.04
Codename: trusty
$ php -v
PHP 5.5.9-1ubuntu4 (cli) (built: Apr 9 2014 17:11:57)
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.5.0, Copyright (c) 1998-2014 Zend Technologies
with Zend OPcache v7.0.3, Copyright (c) 1999-2014, by Zend Technologies
with Xdebug v2.2.3, Copyright (c) 2002-2013, by Derick Rethans
$ php -i | grep opcache.enable_cli
opcache.enable_cli => On => On
$ php execute.php
self: Some\Bar
parent: Other\Bar
$ php -i | grep opcache.enable_cli
opcache.enable_cli => Off => Off
$ php execute.php
PHP Fatal error: Cannot use Other\Bar as Bar because the name is already in use in
/tmp/a/some_foo.php on line 5
PHP Stack trace:
PHP 1. {main}() /tmp/a/execute.php:0
PHP 2. spl_autoload_call() /tmp/a/execute.php:13
PHP 3. {closure:/tmp/a/execute.php:6-8}() /tmp/a/execute.php:0
PHP 4. spl_autoload() /tmp/a/execute.php:7
Fatal error: Cannot use Other\Bar as Bar because the name is already in use in /tmp/a/some_foo.php
on line 5
Call Stack:
0.0002 235776 1. {main}() /tmp/a/execute.php:0
0.0005 242720 2. spl_autoload_call() /tmp/a/execute.php:13
0.0005 242752 3. {closure:/tmp/a/execute.php:6-8}() /tmp/a/execute.php:0
0.0005 242880 4. spl_autoload() /tmp/a/execute.php:7
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[2014-03-11 12:25:59] carl dot vuorinen at w3 dot fi
Here is a more detailed output with both OPcache enabled and OPcache disabled.
Same behaviour also reproduced in few other environments.
$ php -v
PHP 5.5.9-1+sury.org~saucy+1 (cli) (built: Feb 13 2014 15:58:58)
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.5.0, Copyright (c) 1998-2014 Zend Technologies
with Zend OPcache v7.0.3, Copyright (c) 1999-2014, by Zend Technologies
with Xdebug v2.2.3, Copyright (c) 2002-2013, by Derick Rethans
$ php -i | grep opcache.enable_cli
opcache.enable_cli => On => On
$ php execute.php
self: Some\Bar
parent: Other\Bar
$ sudo nano /etc/php5/cli/php.ini
$ php -i | grep opcache.enable_cli
opcache.enable_cli => Off => Off
$ php execute.php
Fatal error: Cannot use Other\Bar as Bar because the name is already in use
in /tmp/path/some_foo.php on line 5
Call Stack:
0.0005 234520 1. {main}() /tmp/path/execute.php:0
0.0036 241464 2. spl_autoload_call() /tmp/path/execute.php:13
0.0036 241496 3. {closure:/tmp/path/execute.php:6-8}() /tmp/path/execute.php:0
0.0036 241624 4. spl_autoload() /tmp/path/execute.php:7
------------------------------------------------------------------------
[2014-02-25 21:29:48] carl dot vuorinen at w3 dot fi
Description:
------------
Autoloading with Opcache enabled allows importing a class from another namespace with a name that is
already in use in the current namespace and the code to execute successfully. Without Opcache the
same code gives Fatal error.
Test script:
---------------
Here is a small sample script with a few files that will be autoloaded by the execute.php script.
Some test results can be found in the comments.
https://gist.github.com/cvuorinen/e7a19101d40c9fa0a959
Expected result:
----------------
Fatal error: Cannot use Other\Bar as Bar because the name is already in use in
/tmp/path/some_foo.php on line 5
Actual result:
--------------
self: Some\Bar
parent: Other\Bar
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Edit this bug report at https://bugs.php.net/bug.php?id=66773&edit=1