#27895 [Com]: Access violation while throwing exception

ID: 27895 Comment by: jevon at jevon dot org Reported By: mes at zeroc dot com Status: Open Bug Type: Zend Engine 2 problem Operating System: Windows 2000/XP PHP Version: 5.0.0RC1 New Comment: I eliminated (or seem to have reduced) my Access Violation errors by using the CGI version (php-cgi.exe) of PHP5 RC1 with IIS. I was using the ISAPI version before. I also never got any errors using the CLI version of PHP. Incidentally, I never seemed to get an Access Violation (with the ISAPI version) on the first PHP request in each webserving session. (Perhaps it's running out of memory or something - I'm guessing the ISAPI version uses a global memory pool whereas CGI/CLI creates new memory each request?) Previous Comments: ------------------------------------------------------------------------ [2004-04-07 14:54:11] mes at zeroc dot com I tried again with the current snapshot, and got the same result. ------------------------------------------------------------------------ [2004-04-07 05:25:05] jevon at jevon dot org (Oops, my report isn't using the new snapshot.) ------------------------------------------------------------------------ [2004-04-07 05:23:55] jevon at jevon dot org I can occasionally get it to crash with almost any exception too, thrown outside of a class, like so: <?php class E extends Exception { } // don't know if this makes a difference try { throw new E(); } catch (Exception $e) { // do nothing - don't know if this makes a difference } echo "42"; ?> Access Violations occur less frequently, but still do occur. Access violations are more likely to be caused, the more complex the script becomes. A small 4000-line web application (I can share source) almost NEVER runs without an Access Violation (but it does occasionally!) I can show that the number of times required to run the script before crash is indeed random: <?php for ($j = 0; $j < 50; $j++) { for ($i = 0; $i < 100; $i++) { if (($str = file_get_contents("http://url_to_script?$i")) != "42") { echo $i . "access violation [$str]"; break; } else { $s++; } } } ?> By echoing $i repeatedly, sometimes it will never fail; other times it will repeatedly crash after 1-10 file_get_contents()s. I guess it's a problem with memory allocation? I get a lot of Access Violations and can't continue developing with them all. OS: Windows XP Pro SP1 Server: Microsoft IIS 5.1 MySQL: 4.1.1 alpha PHP: 5.0RC1 Keep up the good work :) ------------------------------------------------------------------------ [2004-04-07 05:15:06] sniper@php.net Please try using this CVS snapshot: http://snaps.php.net/php5-latest.tar.gz For Windows: http://snaps.php.net/win32/php5-win32-latest.zip ------------------------------------------------------------------------ [2004-04-07 05:14:59] sniper@php.net Does not crash within Linux (debug/no-debug) ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/27895 -- Edit this bug report at http://bugs.php.net/?id=27895&edit=1