Segmentation fault in Zend/zend_types.h

[YuanchengJiang]

Description

The following code:

<?php
class Test {
private $prop {
set { echo __METHOD__, "\n"; }
}
}
$test = new Test;
$fusion = $test;
foreach($fusion as $value) {
}

Resulted in this output:

/php-src/Zend/zend_types.h:650:13: runtime error: member access within null pointer of type 'const zval' (aka 'const struct _zval_struct')
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /php-src/Zend/zend_types.h:650:13

https://3v4l.org/BMg1A/rfc#vgit.master

PHP Version

PHP 8.4.0-dev

Operating System

ubuntu 22.04

[cmb69]

php-src/Zend/zend_property_hooks.c

Lines 123 to 124 in b438e2b

	zval *property = zend_hash_get_current_data(properties);
	if (Z_TYPE_P(property) == IS_PTR) {

I think we need to handle zend_hash_get_current_data(properties) returning NULL here.