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.