ID: 47811 Updated by: fel...@php.net Reported By: travis at wikihow dot com Status: Assigned Bug Type: Reproducible crash Operating System: CentOS release 4.4 & Mac OS 10.4 PHP Version: 5.2.9 Assigned To: nlopess New Comment:
This stack overflow is expected. See the earlies bug reports. Previous Comments: ------------------------------------------------------------------------ [2009-04-02 12:27:26] Phil dot H at gmx dot net Another php preg_match crash using php 5.2.9-1 on Windows XP and 2003R2: <?php $string = str_repeat('blub ', 100000); $regexp = '/ \G (?P<text> (?:.(?!\[% ))*.(?=\[%| $))/isx'; if (preg_match($regexp, $string, $aMatches, PREG_OFFSET_CAPTURE, 0)) { echo "matched\n"; } echo "finished"; ?> ------------------------------------------------------------------------ [2009-03-30 12:22:15] paj...@php.net Nuno, can you take a look please? Can reproduce it here too. ------------------------------------------------------------------------ [2009-03-30 11:24:40] scope at planetavent dot de Here's another snippet: <?php $s = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"; $pattern = "@(X)*@"; $return = preg_match( $pattern, $s ); echo $return; ?> This one crashes apache 2.2.8 and 2.2.11 with php-5.2.9 and php-5.2.9-1 on windows 2003. ------------------------------------------------------------------------ [2009-03-27 23:53:44] dennis dot birkholz at nexxes dot net I have a similar segfault testcase for preg_match. It always crashes at a stringlength of around 6700. PHP is 5.2.8 on gentoo linux. # Create my test-string for ($i=0; $i<20000; $i++) { $string .= 'a'; } # The pattern matches for \\, \", everything except " and " $pattern = '/^(\\\\|\\"|[^"]|")+$/'; print "Trying with string length " . "\033" . '[s'; for ($counter=6600; $counter<strlen($string); $counter++) { if (preg_match($pattern, substr($string,0,$counter), $matches)) { print "\033" . '[u' . $counter . '...'; flush(); list($dummy, $aa) = $matches; } } print "\n"; ------------------------------------------------------------------------ [2009-03-27 17:26:38] travis at wikihow dot com Description: ------------ Run a preg_match with source text attached and get a seg fault. Apache 2.2 / PHP 5.2.9 and PHP 5.2.4. preg_match('@<object(.|\n)*</object>@im', $text, $matches); Reproduce code: --------------- http://wikidiy.com/php_bug_crash.txt Expected result: ---------------- Apache not supposed to crash, completes preg_match, dumps $matches array. Actual result: -------------- Apache seg faults [Fri Mar 27 12:16:05 2009] [notice] child pid 6391 exit signal Segmentation fault (11) ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=47811&edit=1