From: sparkeh at btinternet dot com
Operating system: Linux 2.6.7-gentoo-r9
PHP version: 5.0.1
PHP Bug Type: Reproducible crash
Bug description: Segfault (11) / Possible stack corruption
Description:
------------
I've tried to get the code to the minimum required to cause a crash. The
combination of the local variable being defined and the global reference
seems to be causing stack corruption (the script never returns
successfully from the function call:
jelly can # php -f crash.php
About to segfault : Segmentation fault
jelly can # php -v
PHP 5.0.1 (cli) (built: Aug 18 2004 12:39:38)
Reproduce code:
---------------
<?
switch($t)
{
default:
$rar = 0;
function segfault()
{
global $moo;
echo 'About to segfault : ';
}
segfault();
}
?>
Expected result:
----------------
About to segfault :
Actual result:
--------------
About to segfault : Segmentation fault
--
Edit bug report at http://bugs.php.net/?id=29735&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=29735&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=29735&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=29735&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=29735&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=29735&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=29735&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=29735&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=29735&r=support
Expected behavior: http://bugs.php.net/fix.php?id=29735&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=29735&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=29735&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=29735&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=29735&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=29735&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=29735&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=29735&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=29735&r=float
