Bug #75420 [Ver->Csd]: Crash when modifing property name in __isset for BP_VAR_IS

Edit report at https://bugs.php.net/bug.php?id=75420&edit=1 ID: 75420 Updated by: laruence@php.net Reported by: nikic@php.net Summary: Crash when modifing property name in __isset for BP_VAR_IS -Status: Verified +Status: Closed Type: Bug Package: Scripting Engine problem PHP Version: 7.0.24 Block user comment: N Private report: N New Comment: Automatic comment on behalf of laruence@gmail.com Revision: http://git.php.net/?p=php-src.git;a=commit;h=d2047503cbc080ef96b00ac254604aaa01cf618e Log: Fixed bug #75420 (Crash when modifing property name in __isset for BP_VAR_IS) Previous Comments: ------------------------------------------------------------------------ [2017-10-23 20:00:06] nikic@php.net Description: ------------ $name is changed from string to int in the __isset() call, so that the subsequent __get() call crashes. Test script: --------------- <?php class Test { public function __isset($x) { $GLOBALS['name'] = 24; return true; } public function __get($x) { var_dump($x); return 42; } } $obj = new Test; $name = "foo"; var_dump($obj->$name ?? 12); ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=75420&edit=1