#47949 [Fbk->Opn]: Return value of a registered completion function is not tested

ID: 47949 User updated by: rannou dot sebastien at gmail dot com Reported By: rannou dot sebastien at gmail dot com -Status: Feedback +Status: Open Bug Type: Readline related Operating System: GNU/Linux PHP Version: 5.2.9 New Comment: Sorry for my mistake, I thought it was with php-5.2.9, but it seems only to happen on 5.2.4. $ php -v PHP 5.2.4-2ubuntu5.5 with Suhosin-Patch 0.9.6.2 (cli) (built: Feb 11 2009 20:09:52) Here's the gdb trace: Core was generated by `php segfault.php'. Program terminated with signal 11, Segmentation fault. [New process 18508] #0 0xb7f5214a in ?? () from /usr/lib/libedit.so.2 #1 0xb79e3cca in ?? () from /lib/tls/i686/cmov/libc.so.6 #2 0xb79e46b7 in qsort () from /lib/tls/i686/cmov/libc.so.6 #3 0xb7f51c3f in fn_display_match_list () from /usr/lib/libedit.so.2 #4 0xb7f5201b in fn_complete () from /usr/lib/libedit.so.2 #5 0xb7f577ce in rl_complete () from /usr/lib/libedit.so.2 #6 0xb7f577f9 in ?? () from /usr/lib/libedit.so.2 #7 0xb7f4cd36 in el_gets () from /usr/lib/libedit.so.2 #8 0xb7f58dc5 in readline () from /usr/lib/libedit.so.2 #9 0x08353d57 in zif_readline () #10 0x082f4c0b in ?? () #11 0x082e5648 in execute () #12 0x082c4443 in zend_execute_scripts () #13 0x0827a2b0 in php_execute_script () #14 0x08356a0a in main () (gdb) I've very sorry once again. I re-open the ticket in case it interests you. Thanks for your attention :-) Previous Comments: ------------------------------------------------------------------------ [2009-04-11 17:14:30] felipe@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 can't reproduce it using libreadline 5.2-4. ------------------------------------------------------------------------ [2009-04-11 12:14:45] rannou dot sebastien at gmail dot com Description: ------------ If the registered function from readline_completion_function returns an empty array, a segmentation fault happens when trying to tab. Reproduce code: --------------- <?php // script.php function foo() { return array(); } readline_completion_function('foo'); while (42) echo readline('> '); ?> Expected result: ---------------- Doing nothing or printing a new prompt. Actual result: -------------- $> php script.php > Segmentation fault $> ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=47949&edit=1