#24990 [NEW]: Apache segfaults when combination of functions are applied to empty variable
From: jacob at keystreams dot com
Operating system: Mandrake Linux; 2.4.8-26mdk
PHP version: 4.3.1
PHP Bug Type: Reproducible crash
Bug description: Apache segfaults when combination of functions are applied to empty variable
Description:
------------
When attempting to decode a string using three functions at once
(utf8_decode, html_entity_decode, stripslashes) and if the string is null,
Apache reports a segfault error and a general 'The page cannot be
displayed' error page is shown or the last working client-side cached
version of the page.
Running Apache 1.3.27 w/ mod_rewrite.
PHP ./configure: ./configure --with-mysql=/usr --with-xml
--enable-track-vars --with-apache=../apache_1.3.27 --with-curl=/usr/lib
--with-dom --with-zlib
Reproduce code:
---------------
<?php
$string = null;
$string = utf8_decode(html_entity_decode(stripslashes($string)));
echo $string;
?>
Expected result:
----------------
It is expected that a decoded string will be returned and echo'd to the
browser.
Actual result:
--------------
[no backtrace available] Web browser displays nothing or last cached page
results. Apache error_log shows the following:
[Fri Aug 8 15:57:16 2003] [notice] child pid 420 exit signal Segmentation
fault (11)
This error is reproduced successfully everytime.
--
Edit bug report at http://bugs.php.net/?id=24990&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=24990&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=24990&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=24990&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=24990&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=24990&r=needtrace
Try newer version: http://bugs.php.net/fix.php?id=24990&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=24990&r=support
Expected behavior: http://bugs.php.net/fix.php?id=24990&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=24990&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=24990&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=24990&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=24990&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=24990&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=24990&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=24990&r=gnused
Thread (2 messages)
- jacob at keystreams dot com