Bug #65168 [Opn]: segfault when __toString() returns "$this"

Edit report at https://bugs.php.net/bug.php?id=65168&edit=1 ID: 65168 Updated by: laruence@php.net Reported by: oliver at x10 dot pe Summary: segfault when __toString() returns "$this" Status: Open Type: Bug Package: Class/Object related Operating System: Xubuntu 12.10 64bits PHP Version: master-Git-2013-06-30 (Git) Block user comment: N Private report: N New Comment: actually, this is not a "returning" problem, return "$this" is same as return strval($this), so, it's the same as return $this->__toString. it's a stack overflow segfault Previous Comments: ------------------------------------------------------------------------ [2013-06-30 15:54:07] oliver at x10 dot pe Description: ------------ Hi, Casting $this as string inside __toString() magic function makes php crash. It seems it ran into an infinite loop. Tested on PHP 5.5 and 5.4.11, even 5.3.6 Test script: --------------- class base { function __toString() { return "$this"; } } echo new base(); Expected result: ---------------- Exception thrown, or an error message. Actual result: -------------- Violación de segmento (`core' generado) [Segmentation Fault ('core' dumped)] ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=65168&edit=1