#34150 [NEW]: xml_set_element_handler segfaults using object in callback

From: pierre at dotgeek dot org Operating system: linux PHP version: 4CVS-2005-08-16 (CVS) PHP Bug Type: XML related Bug description: xml_set_element_handler segfaults using object in callback Description: ------------ xml_set_element_handler segfaults when using a reference to an object or "this" using 4.4 cvs or stock release. Reproduce code: --------------- <?php class parser { var $parser = NULL; var $stack = ''; function parser() { $this->parser = xml_parser_create(); xml_set_element_handler($this->parser, array(&$this, '_startElement'), array(&$this, '_endElement')); } function _startElement($parser, $tag) { $this->stack .= $tag . '/'; } function _endElement($parser, $tag) { $this->stack .= $tag . '/'; } } $parser = new parser(); Expected result: ---------------- no segfault. Actual result: -------------- Non debug mode ends with: *** glibc detected *** ./sapi/cli/php: double free or corruption (!prev): 0x0a1a76b0 *** ======= Backtrace: ========= /lib/libc.so.6[0x174424] /lib/libc.so.6(__libc_free+0x77)[0x17495f] ./sapi/cli/php[0x80fb268] ./sapi/cli/php(php_XML_ParserFree+0x81)[0x80fd305] ./sapi/cli/php[0x80f87d6] ./sapi/cli/php(list_entry_destructor+0x75)[0x813bf4d] ./sapi/cli/php(zend_hash_del_key_or_index+0x15d)[0x813b511] ./sapi/cli/php(_zend_list_delete+0x58)[0x813bd04] ./sapi/cli/php(_zval_ptr_dtor+0x3d)[0x812e995] ./sapi/cli/php(zend_hash_destroy+0x3c)[0x813a32c] ./sapi/cli/php(_zval_dtor+0x3a)[0x8135f9e] ./sapi/cli/php(_zval_ptr_dtor+0x3d)[0x812e995] ./sapi/cli/php(zend_hash_destroy+0x3c)[0x813a32c] ./sapi/cli/php(_zval_dtor+0x80)[0x8135fe4] ./sapi/cli/php(_zval_ptr_dtor+0x3d)[0x812e995] ./sapi/cli/php[0x80f8822] ./sapi/cli/php(list_entry_destructor+0x75)[0x813bf4d] ./sapi/cli/php[0x813a48b] ./sapi/cli/php(zend_hash_graceful_reverse_destroy+0x17)[0x813a5cb] ./sapi/cli/php(shutdown_executor+0xbf)[0x812ea6f] ./sapi/cli/php(zend_deactivate+0x84)[0x8136c68] ./sapi/cli/php(php_request_shutdown+0x15f)[0x810f6a3] ./sapi/cli/php(main+0x148)[0x8151088] /lib/libc.so.6(__libc_start_main+0xc6)[0x125de6] ./sapi/cli/php[0x8064c2d] I can provide a backtrace later if required but the script is here :) -- Edit bug report at http://bugs.php.net/?id=34150&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=34150&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=34150&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=34150&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=34150&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=34150&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=34150&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=34150&r=needscript Try newer version: http://bugs.php.net/fix.php?id=34150&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=34150&r=support Expected behavior: http://bugs.php.net/fix.php?id=34150&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=34150&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=34150&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=34150&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=34150&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=34150&r=dst IIS Stability: http://bugs.php.net/fix.php?id=34150&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=34150&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=34150&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=34150&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=34150&r=mysqlcfg