Bug #74648 [Opn->Nab]: zend_read_static_property returns &NULL for extending classes

Edit report at https://bugs.php.net/bug.php?id=74648&edit=1 ID: 74648 Updated by: laruence@php.net Reported by: jurigag at gmail dot com Summary: zend_read_static_property returns &NULL for extending classes -Status: Open +Status: Not a bug Type: Bug Package: Scripting Engine problem Operating System: Ubuntu 14.04 PHP Version: 7.0.19 Block user comment: N Private report: N New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php you should use ZVAL_DEREF to handle that Previous Comments: ------------------------------------------------------------------------ [2017-05-24 14:43:13] requinix@php.net Related To: Bug #74643 ------------------------------------------------------------------------ [2017-05-24 14:33:06] jurigag at gmail dot com Description: ------------ When extending internal class which has defined static property with null value and accessing this static property in C code using zend_read_static_property there is value returned as &NULL in C code causing some comparisons to fail. Though value in php code of this static property is correctly returned as NULL. This also happens for php 7.1 as well. Test script: --------------- In class init: zend_declare_property_null(test3_test_ce, "someNull", sizeof("someNull")-1, ZEND_ACC_PUBLIC|ZEND_ACC_STATIC TSRMLS_CC); Access and dump it somewhere(in method for example, keep in mind you must extends class in php first): zval *tmp = zend_read_static_property(ce, "someNull", sizeof("queryString")-1, (zend_bool) ZEND_FETCH_CLASS_SILENT); // here will be returned &NULL php_var_dump(tmp, 1); // var dumps &NULL if (Z_TYPE_P(tmp) == IS_NULL) // false ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=74648&edit=1