#35243 [Fbk->Opn]: Crashes in php_mblen when compiled with thread-safety on Linux

ID: 35243 User updated by: shulmanb at il dot ibm dot com Reported By: shulmanb at il dot ibm dot com -Status: Feedback +Status: Open Bug Type: Scripting Engine problem Operating System: Linux PHP Version: 5.0.5 New Comment: Done. Can be found at: http://news.php.net/php.internals/20164 Previous Comments: ------------------------------------------------------------------------ [2005-11-17 09:39:15] sniper@php.net How about mailing it to internals@lists.php.net ? ------------------------------------------------------------------------ [2005-11-17 08:14:06] shulmanb at il dot ibm dot com It still is a problem with the latest snapshot. Since I don't have a server where I can host the diff file, please let me know whether you want me to put it here (12 lines, which will probably end up trunctated), or mail it to you. Please let me know what you prefer. ------------------------------------------------------------------------ [2005-11-16 18:18:33] sniper@php.net And if it's still a problem, provide the patch in unified diff format. ------------------------------------------------------------------------ [2005-11-16 18:18:10] 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 ------------------------------------------------------------------------ [2005-11-16 16:07:01] shulmanb at il dot ibm dot com Description: ------------ When running on Linux with --enable-maintainer-zts (and yes, I know it's not wise...), crashes sometimes happen in ext/standard/php_string.h when using the php_mblen macro. This happens because in ext/standard/basic_functions.c, in the basic_globals_ctor function, the value of mblen_state is not initialized. The basic_globals_ctor function should include the following lines as part of the initialization: #if defined(_REENTRANT)&&defined(HAVE_MBRLEN)&&defined(HAVE_MBSTATE_T) memset(&BG(mblen_state), 0, sizeof(BG(mblen_state))); #endif Unfortunately, I am unable to include code that demonstrate this, as the crash strongly depends on the (random) value of mblen_state. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=35243&edit=1