From: [EMAIL PROTECTED]
Operating system: any
PHP version: 5.2.7RC2
PHP Bug Type: Reproducible crash
Bug description: wrong $this passed to internal methods causes segfault
Description:
------------
The code below makes PHP crash.
This happens because PHP uses wrong $this (PHP4 compatibility, bah..) and
extensions have no means to check that.
The problem is not present in 5.3+, as it was fixed by Marcus in February
as a part of big patch.
Reproduce code:
---------------
<?php
class test {
public function test() {
return PDO::lastInsertId();
}
}
$test = new test();
$test->test();
?>
Actual result:
--------------
==5855== Invalid read of size 8
==5855== at 0x5FEDAC: zim_PDO_lastInsertId (pdo_dbh.c:952)
==5855== by 0x8C328E: zend_do_fcall_common_helper_SPEC
(zend_vm_execute.h:200)
==5855== by 0x8C3FF6: ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(zend_vm_execute.h:322)
==5855== by 0x8C2D2F: execute (zend_vm_execute.h:92)
==5855== by 0x8C341D: zend_do_fcall_common_helper_SPEC
(zend_vm_execute.h:234)
==5855== by 0x8C3FF6: ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(zend_vm_execute.h:322)
==5855== by 0x8C2D2F: execute (zend_vm_execute.h:92)
==5855== by 0x89A35F: zend_execute_scripts (zend.c:1134)
==5855== by 0x83FAC1: php_execute_script (main.c:2011)
==5855== by 0x9209C0: main (php_cli.c:1134)
==5855== Address 0x8e68760 is not stack'd, malloc'd or (recently) free'd
==5855==
==5855== Invalid write of size 8
==5855== at 0x5FEDBC: zim_PDO_lastInsertId (pdo_dbh.c:952)
==5855== by 0x8C328E: zend_do_fcall_common_helper_SPEC
(zend_vm_execute.h:200)
==5855== by 0x8C3FF6: ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(zend_vm_execute.h:322)
==5855== by 0x8C2D2F: execute (zend_vm_execute.h:92)
==5855== by 0x8C341D: zend_do_fcall_common_helper_SPEC
(zend_vm_execute.h:234)
==5855== by 0x8C3FF6: ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(zend_vm_execute.h:322)
==5855== by 0x8C2D2F: execute (zend_vm_execute.h:92)
==5855== by 0x89A35F: zend_execute_scripts (zend.c:1134)
==5855== by 0x83FAC1: php_execute_script (main.c:2011)
==5855== by 0x9209C0: main (php_cli.c:1134)
==5855== Address 0x8e68760 is not stack'd, malloc'd or (recently) free'd
==5855==
==5855== Invalid read of size 4
==5855== at 0x8C0B70: zend_objects_store_del_ref
(zend_objects_API.c:165)
==5855== by 0x5FEDD6: zim_PDO_lastInsertId (pdo_dbh.c:952)
==5855== by 0x8C328E: zend_do_fcall_common_helper_SPEC
(zend_vm_execute.h:200)
==5855== by 0x8C3FF6: ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(zend_vm_execute.h:322)
==5855== by 0x8C2D2F: execute (zend_vm_execute.h:92)
==5855== by 0x8C341D: zend_do_fcall_common_helper_SPEC
(zend_vm_execute.h:234)
==5855== by 0x8C3FF6: ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(zend_vm_execute.h:322)
==5855== by 0x8C2D2F: execute (zend_vm_execute.h:92)
==5855== by 0x89A35F: zend_execute_scripts (zend.c:1134)
==5855== by 0x83FAC1: php_execute_script (main.c:2011)
==5855== by 0x9209C0: main (php_cli.c:1134)
==5855== Address 0x8e68768 is not stack'd, malloc'd or (recently) free'd
and so on.
--
Edit bug report at http://bugs.php.net/?id=46381&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=46381&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=46381&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=46381&r=trysnapshot60
Fixed in CVS:
http://bugs.php.net/fix.php?id=46381&r=fixedcvs
Fixed in CVS and need be documented:
http://bugs.php.net/fix.php?id=46381&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=46381&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=46381&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=46381&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=46381&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=46381&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=46381&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=46381&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=46381&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=46381&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=46381&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=46381&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=46381&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=46381&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=46381&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=46381&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=46381&r=mysqlcfg
