Bug #12952 Updated: Output buffering misbehaving

ID: 12952 Updated by: sniper Reported By: ryan_sokol@ihearditwas.com Old Status: Open Status: Feedback Bug Type: Output Control Operating System: RedHat 7.2 PHP Version: 4.0.6 New Comment: Does this happen with latest CVS snapshot from http://snaps.php.net/ ? Previous Comments: ------------------------------------------------------------------------ [2001-10-30 16:40:02] ryan_sokol@ihearditwas.com Almost forgot, I also get this in my Apache error_log: [Tue Oct 30 15:36:56 2001] [notice] child pid 4831 exit signal Segmentation fault (11) ------------------------------------------------------------------------ [2001-10-30 15:35:30] ryan_sokol@ihearditwas.com Changed the bug type, OS, and Summary. After unsuccessfully trying to get a backtrace (got a Segmentation Fault and "Document contains no data", but could not generate a core file nor force a crash on httpd in gdb), I have concluded that this has to do with the --enable-trans-sid option AND ob_end_flush() on PHP 4.0.6. When I compile PHP WITHOUT the --enable-trans-sid, I have no problems (except I need the trans-sid for my sessions). But when I recompile PHP WITH --enable-trans-sid, I get the Segmentation Fault and "Document contains no data" errors. I think this is related to Bug# 12180. Again, the code (see above) did not change from PHP 4.0.4pl1 to PHP 4.0.6, but the result of execution did. ------------------------------------------------------------------------ [2001-10-26 18:06:58] ryan_sokol@ihearditwas.com Note: The function sessionResume() simply checks if a session exists for the user and continues it if it does or starts a new one if it doesn't. ------------------------------------------------------------------------ [2001-08-24 17:24:36] ryan_sokol@ihearditwas.com Here's my configure line: './configure' '-with-apxs' '--enable-track-vars' '--disable-debug' '--enable-sysvshm' '-enable-sysvsem' '-enable-trans-sid' I have been running PHP 4.0.4pl1 with no problems for about 5 months and tried to move to PHP 4.0.6. The code below produced an undisplayable page in 4.0.6 but works fine in 4.0.4pl1: /////////////////////////////////////////////////////////// ob_start(); if (sessionResume() == false) { // some error handling code here include "error.fre"; return; } else { // some more logic here if($loginTo != '') // means would rather go to another page, probably from bookmark header("Location: " . $loginTo . "&PHPSESS=" . session_id()); else include "member-home.fre"; } ob_end_flush(); /////////////////////////////////////////////////////////// What happens when I run this code is IE gives me a "Page cannot be displayed" screen. I am positive this has something to do with 4.0.6 because I had 4.0.4pl1 installed, then upgraded to 4.0.6 and got the error, and then downgraded back to 4.0.4pl1 (where it worked properly again) without changing one line of code or anything in php.ini. Sorry I can't offer any suggestions, but let me know if I can help track this one down. ------------------------------------------------------------------------ Edit this bug report at http://bugs.php.net/?id=12952&edit=1