#40514 [NEW]: Segmentation fault on session_register of undeclared variable

From: steve at webdrive dot co dot nz Operating system: Debian Linux 3.1 PHP version: 4.4.5 PHP Bug Type: Session related Bug description: Segmentation fault on session_register of undeclared variable Description: ------------ The upgrade from PHP 4.4.4 to 4.4.5 caused a Segmentation Fault on a client's osCommerce site. I've tracked the problem down to a session_register function call on a undeclared variable. Reproduce code: --------------- <?php session_start(); // Uncomment the following line to prevent the Segmentation Fault //$myvar = 1; session_register("myvar"); echo "Hello World"; ?> Expected result: ---------------- Hello World and no "Segmentation Fault" in Apache's error log: [Sat Feb 17 21:14:16 2007] [notice] child pid 20549 exit signal Segmentation fault (11) Actual result: -------------- 0x080dbbc2 in php_add_session_var (name=0x850b75c "myvar", namelen=5) at /usr/src/apache-php/build/php-4.4.5/ext/session/session.c:287 287 if ((Z_TYPE_PP(sym_global) == IS_ARRAY && Z_ARRVAL_PP(sym_global) == &EG(symbol_table)) || *sym_global == PS(http_session_vars)) { -- Edit bug report at http://bugs.php.net/?id=40514&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=40514&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=40514&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=40514&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=40514&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=40514&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=40514&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=40514&r=needscript Try newer version: http://bugs.php.net/fix.php?id=40514&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=40514&r=support Expected behavior: http://bugs.php.net/fix.php?id=40514&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=40514&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=40514&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=40514&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=40514&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=40514&r=dst IIS Stability: http://bugs.php.net/fix.php?id=40514&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=40514&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=40514&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=40514&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=40514&r=mysqlcfg