Bug #68709 [Opn->Fbk]: Segfault when parent::offsetGet() is called

Edit report at https://bugs.php.net/bug.php?id=68709&edit=1 ID: 68709 Updated by: laruence@php.net Reported by: zecho23 at gmail dot com Summary: Segfault when parent::offsetGet() is called -Status: Open +Status: Feedback Type: Bug Package: Reproducible crash Operating System: Debian 8 PHP Version: 5.6.4 Block user comment: N Private report: N New Comment: Thank you for this bug report. To properly diagnose the problem, we need a short but complete example script to be able to reproduce this bug ourselves. A proper reproducing script starts with <?php and ends with ?>, is max. 10-20 lines long and does not require any external resources such as databases, etc. If the script requires a database to demonstrate the issue, please make sure it creates all necessary tables, stored procedures etc. Please avoid embedding huge scripts into the report. Previous Comments: ------------------------------------------------------------------------ [2015-01-01 12:38:52] zecho23 at gmail dot com Description: ------------ I had some old code running for years (since PHP 5.3.x). After upgrade it started to segfault in a overwritten offsetGet method in a class implementing ArrayAccess. After debugging it I reached the broken code at following function made long ago: public function offsetGet($key) { if (in_array($key, array_keys($this->_structure), true) && !isset($this[$key])) { return null; } return (parent::offsetExists($key)) ? parent::offsetGet($key) : null; } The result at dbg: Program received signal SIGSEGV, Segmentation fault. zend_call_method (object_pp=object_pp@entry=0x7fffff7ff078, obj_ce=0x1d14658, fn_proxy=fn_proxy@entry=0x1d5beb0, function_name=function_name@entry=0xb2598c "offsetGet", function_name_len=function_name_len@entry=9, retval_ptr_ptr=retval_ptr_ptr@entry=0x7fffff7ff088, param_count=1, arg1=0x2059d28, arg2=0x0) at /build/php5-NIujy4/php5-5.6.4+dfsg/Zend/zend_interfaces.c:47 47 in /build/php5-NIujy4/php5-5.6.4+dfsg/Zend/zend_interfaces.c I made it work after changing the last tine to: return (parent::offsetExists($key)) ? $this->_structure[$key] : null; Hope that helps. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=68709&edit=1