#24990 [Opn->Csd]: Apache segfaults when combination of functions are applied to empty variable

ID: 24990 Updated by: sniper@php.net Reported By: jacob at keystreams dot com -Status: Open +Status: Closed Bug Type: Reproducible crash Operating System: Mandrake Linux; 2.4.8-26mdk PHP Version: 4.3.1 New Comment: Cannot reproduce using latest CVS (PHP 4.3.3RC3) Previous Comments: ------------------------------------------------------------------------ [2003-08-08 17:07:56] jacob at keystreams dot com 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 this bug report at http://bugs.php.net/?id=24990&edit=1