From: ndroege at bimp dot de
Operating system: linux debian
PHP version: 5.2.1
PHP Bug Type: Reproducible crash
Bug description: calling backtrace inside nested static class functions causes
segfault
Description:
------------
Testet on 5.2.0 and 5.2.1
I was able to reproduce segfaults in this situation
on the commandline and with apache!
Reproduce code:
---------------
<?php
class CrashHelper
{
function call2($tpl_var, $value = null) {}
function call1($value = null) {}
}
class Crash
{
static function outerCall($param)
{
$ch = new CrashHelper();
# $test = Crash::innerCall($param);
# $ch->call2('test', $test); // don't crash
# $ch->call1(Crash::innerCall($param)); // don't crash
$ch->call2('test', Crash::innerCall($param)); // crash
}
static function innerCall($param)
{
$backtrace = debug_backtrace();
echo '<pre>'.var_export($backtrace, true).'</pre>';
}
}
function doCrash($param)
{
# $ch = new CrashHelper();
# $ch->call2('test', Crash::innerCall($param)); // don't crash
Crash::outerCall($param);
}
doCrash($_GET['id']);
?>
Expected result:
----------------
backtrace,
no crash
Actual result:
--------------
Speicherzugriffsfehler
--
Edit bug report at http://bugs.php.net/?id=40765&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=40765&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=40765&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=40765&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=40765&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=40765&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=40765&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=40765&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=40765&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=40765&r=support
Expected behavior: http://bugs.php.net/fix.php?id=40765&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=40765&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=40765&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=40765&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=40765&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=40765&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=40765&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=40765&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=40765&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=40765&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=40765&r=mysqlcfg
