Bug #74643 [Csd->Dup]: zend_read_static_property returns &NULL for extending classes

Edit report at https://bugs.php.net/bug.php?id=74643&edit=1 ID: 74643 Updated by: requinix@php.net Reported by: jurigag at gmail dot com Summary: zend_read_static_property returns &NULL for extending classes -Status: Closed +Status: Duplicate 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: bug #74648 Previous Comments: ------------------------------------------------------------------------ [2017-05-24 14:30:14] jurigag at gmail dot com I will create it again ------------------------------------------------------------------------ [2017-05-24 11:29:43] jurigag at gmail dot com zval *tmp = zend_read_static_property(ce, "someNull", sizeof("queryString")-1, (zend_bool) ZEND_FETCH_CLASS_SILENT); ------------------------------------------------------------------------ [2017-05-24 11:12:17] 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, sizeof("someNull")-1, ZEND_ACC_PUBLIC|ZEND_ACC_STATIC TSRMLS_CC); Access and dump it somwhere(keep in mind you must extends class in php first): zval *tmp = zend_read_static_property(ce, sizeof("someNull")-1, len, (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=74643&edit=1