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Bug #36666 Wrninig: Compilation failed: lookbehind assertion is not fixed length
Submitted: 2006-03-09 13:56 UTC Modified: 2006-03-09 21:02 UTC
From: lacak at users dot sourceforge dot net Assigned:
Status: Not a bug Package: *Regular Expressions
PHP Version: 5.1.2 OS: Windows 98
Private report: No CVE-ID: None
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 [2006-03-09 13:56 UTC] lacak at users dot sourceforge dot net 
Description:
------------
It seems like bug in evaluation regular expresion in preg_match() function. See code.

Reproduce code:
---------------
/* 1. this produces warning */
 if (preg_match("/(?<![^f]oo)(bar)/i", "xoobar")>0) echo "Match3";

/* 2. this does not produces warning */
 if (preg_match("/(?<![^fo]o)(bar)/i", "xoobar")>0) echo "Match4";

Expected result:
----------------
Case 1 without warning
Case 2 without warning


Actual result:
--------------
Case 1 with warning
Case 2 without warning

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 [2006-03-09 21:02 UTC] mike@php.net 
This is a libpcre bug, please report it there:
http://sourceforge.net/projects/pcre/
 
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