Edit report at https://bugs.php.net/bug.php?id=61744&edit=1
ID: 61744
User updated by: bugzilla33 at gmail dot com
Reported by: bugzilla33 at gmail dot com
Summary: preg_match crashes
Status: Open
Type: Bug
Package: *Regular Expressions
Operating System: Win 7 64-bit
PHP Version: 5.4.1RC2
Block user comment: N
Private report: N
New Comment:
str_repeat('AB',200) do not crash
str_repeat('AB',300) crashes - browser freeze about 4sec and info - browser can
not display site
Previous Comments:
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[2012-04-16 16:18:15] ras...@php.net
Windows-only, I assume? Apache uses PCRE as well, so perhaps Apache on Windows
is
resetting the PCRE limits? I assume it doesn't crash if you reduce the 300
there
to something smaller?
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[2012-04-16 16:13:05] bugzilla33 at gmail dot com
I checked recursion-limit:
pcre.backtrack_limit 1000000
pcre.recursion_limit 100000
On fastCGI or direct php.exe testcase.php does not crash.
When use Apache 2.2.21 with php module with the same php.ini
testcase.php crash apache.
Now I am at home. The same crash like at work - two other machines.
------------------------------------------------------------------------
[2012-04-16 14:52:41] larue...@php.net
Thank you for this bug report. To properly diagnose the problem, we
need a backtrace to see what is happening behind the scenes. To
find out how to generate a backtrace, please read
http://bugs.php.net/bugs-generating-backtrace.php for *NIX and
http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32
Once you have generated a backtrace, please submit it to this bug
report and change the status back to "Open". Thank you for helping
us make PHP better.
I think it is probable because of :
http://www.php.net/manual/en/pcre.configuration.php#ini.pcre.recursion-limit
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[2012-04-16 11:01:26] bugzilla33 at gmail dot com
Try as Apache module.
php.exe testcase.php does not crash
------------------------------------------------------------------------
[2012-04-16 10:57:30] bugzilla33 at gmail dot com
Description:
------------
preg_match crashes
Test script:
---------------
<?=preg_match('#^(A{1,2}B)+$#',str_repeat('AB',300));?>
Expected result:
----------------
preg_match no crash
Actual result:
--------------
preg_match crashes
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Edit this bug report at https://bugs.php.net/bug.php?id=61744&edit=1
