PHP Bugs: #12768: wordwrap crashes with 4 parameters and width=0

Bug #12768	wordwrap crashes with 4 parameters and width=0
Submitted:	15 Aug 2001 12:00pm UTC	Modified:	4 Jan 2002 2:49pm UTC
From:	marc dot pohl at wwf-gruppe dot de	Assigned to:	elixer
Status:	Closed	Category:	Reproducible crash
Version:	4.0.6	OS:	Linux

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[15 Aug 2001 12:00pm UTC] marc dot pohl at wwf-gruppe dot de

hi,

i discovered a small bug in wordwrap. if you call this function with 4
parameters and a width of 0 your php-script will crash/timeout.

<pre>
<?php
 $string = "the quick brown fox ...";
 echo wordwrap($string, 0, "\n", 1),"\n";
?>
</pre>

here is an inconsistency with the 2-parameter version, which returns all
words separated by \n in this case

regards marc

[4 Jan 2002 2:49pm UTC] jimw@php.net

forcing a cut with a zero width doesn't make any sense. but segfault
fixed in cvs and this case now issues a warning. (but also found and
fixed a related crash if a multi-character break was used with a zero
width.)


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