0001896: Segfault with closures that are not created from user code

ID	Project	Category	View Status	Date Submitted	Last Update
0001896	Xdebug	Uncategorized	public	2020-11-26 17:24	2020-11-27 16:58

Reporter	serbancatalin18	Assigned To
Priority	normal	Severity	crash	Reproducibility	always
Status	closed	Resolution	fixed
Product Version	3.0.0
Target Version	3.0dev	Fixed in Version	3.0.1

Summary	0001896: Segfault with closures that are not created from user code
Description	gdb trace attached The following script gives Segmentation fault. Removing xdebug or running php -n returns ok. $a = new \ReflectionClass(\stdClass::class); $b = \Closure::fromCallable([$a, 'newInstanceWithoutConstructor']); $c = $b();
Steps To Reproduce	Create a php file with $a = new \ReflectionClass(\stdClass::class); $b = \Closure::fromCallable([$a, 'newInstanceWithoutConstructor']); $c = $b(); Run from cli
Additional Information	php -v PHP 7.3.9 (cli) (built: Sep 12 2019 10:23:43) ( NTS ) Copyright (c) 1997-2018 The PHP Group Zend Engine v3.3.9, Copyright (c) 1998-2018 Zend Technologies with Zend OPcache v7.3.9, Copyright (c) 1999-2018, by Zend Technologies with Xdebug v3.0.0, Copyright (c) 2002-2020, by Derick Rethans cat /proc/version Linux version 5.4.39-linuxkit (root@buildkitsandbox) (gcc version 9.2.0 (Alpine 9.2.0)) #1 SMP Fri May 8 23:03:06 UTC 2020
Tags	No tags attached.

Operating System
PHP Version	7.3.5-7.3.9

derick 2020-11-27 16:58 administrator ~0005552	https://github.com/xdebug/xdebug/pull/696 Fixed in GIT (master and xdebug_3_0) for xdebug 3.0.1