#28437 [Fbk]: foreach on container object segfaults

ID: 28437 Updated by: wez@php.net Reported By: fred at argus dot pt Status: Feedback Bug Type: Reproducible crash Operating System: Linux SuSE 9.0 PHP Version: 5.0.0RC2 New Comment: and the debugger; remove any third party extensions that you didn't compile yourself. Previous Comments: ------------------------------------------------------------------------ [2004-05-18 23:14:49] wez@php.net Remove the ZendOptimizer and try again :) ------------------------------------------------------------------------ [2004-05-18 23:05:04] fred at argus dot pt Amazing, I succeeded in getting a backtrace for the first time. Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 16384 (LWP 171)] 0x4076825d in zend_oe () from /usr/local/Zend/lib/Optimizer-2.5.2/php-5.0.0/ZendOptimizer.so (gdb) bt #0 0x4076825d in zend_oe () from /usr/local/Zend/lib/Optimizer-2.5.2/php-5.0.0/ZendOptimizer.so #1 0x4073d68b in zend_oe () from /usr/local/Zend/lib/Optimizer-2.5.2/php-5.0.0/ZendOptimizer.so #2 0x4073d360 in zend_oe () from /usr/local/Zend/lib/Optimizer-2.5.2/php-5.0.0/ZendOptimizer.so #3 0x407e8d39 in db_ () from /usr/local/Zend/lib/Debugger-3.5.0/php-5.0.0/ZendDebugger.so #4 0x40423aa9 in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /usr/local/php-5.0.0RC2/Zend/zend.c:1058 #5 0x403ecf61 in php_execute_script (primary_file=0xbffff290) at /usr/local/php-5.0.0RC2/main/main.c:1630 #6 0x40456766 in php_handler (r=0x82c0cf8) at /usr/local/php-5.0.0RC2/sapi/apache2handler/sapi_apache2.c:556 #7 0x080ab65b in ap_run_handler (r=0x82c0cf8) at config.c:152 #8 0x080abbde in ap_invoke_handler (r=0x82c0cf8) at config.c:358 #9 0x0809a7ab in ap_process_request (r=0x82c0cf8) at http_request.c:246 #10 0x080964cc in ap_process_http_connection (c=0x82bc6a8) at http_core.c:250 #11 0x080b551b in ap_run_process_connection (c=0x82bc6a8) at connection.c:42 #12 0x080aa13d in child_main (child_num_arg=0) at prefork.c:609 #13 0x080aa24d in make_child (s=0x8197fe8, slot=0) at prefork.c:649 #14 0x080aa314 in startup_children (number_to_start=5) at prefork.c:721 #15 0x080aa97d in ap_mpm_run (_pconf=0x8195120, plog=0x81cd200, s=0x0) at prefork.c:940 #16 0x080afd9a in main (argc=2, argv=0xbffff5e4) at main.c:617 ------------------------------------------------------------------------ [2004-05-18 21:07:37] wez@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 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. ------------------------------------------------------------------------ [2004-05-18 21:01:57] fred at argus dot pt Description: ------------ If I create an object with a container(array) instance variable, and then use foreach to iterate over the container, then a segfault occurs. If I copy the container to a temporary variable, and foreach over the temp, the code works fine. Similar code worked fine in PHP4, and I think 5.0.0RC1. Reproduce code: --------------- <?php class user { public $msgs = array(); } class message { public $text; } $user = new user; $msg = new message; $msg->text = "Hello"; $user->msgs[] = $msg; foreach($user->msgs as $msg) { echo "<br>Text is $msg->text"; } echo "<br>Tests completed"; ?> Expected result: ---------------- Text is Hello Tests completed Actual result: -------------- Blank Screen Segfault message in main server error log. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=28437&edit=1