Bug #52539 [NEW]: Calling function from rebound Closure causes crash

From: Date: Thu, 05 Aug 2010 07:34:57 +0000
Subject: Bug #52539 [NEW]: Calling function from rebound Closure causes crash
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-153108@lists.php.net to get a copy of this message
From:             cataphract
Operating system: Windows
PHP version:      trunk-SVN-2010-08-05 (SVN)
Package:          Scripting Engine problem
Bug Type:         Bug
Bug description:Calling function from rebound Closure causes crash

Description:
------------
Calling a function in a rebound closure causes a crash.

This seems to be caused by dmitry's optimizations because this fixes the
issue:
#define CACHED_PTR(num) 0.

Test script:
---------------
class foo {
	static function getClosure() {
		return static function () {
			//causes a crash (fbc not properly defined) in call after rebinding
			echo get_called_class(), "\n";
		};
	}
}
 
class subFoo { }
 
$c = foo::getClosure();
$c(); //foo
$c = $c->bindTo(new subFoo());
$c(); //crash

Expected result:
----------------
No crash.

Actual result:
--------------
>	php5ts_debug.dll!zend_do_fcall_common_helper_SPEC(_zend_execute_data *
execute_data=0x025d2298, void * * * tsrm_ls=0x02784bf8)  Line 302 + 0x3
bytes	C
 	php5ts_debug.dll!ZEND_DO_FCALL_SPEC_CONST_HANDLER(_zend_execute_data *
execute_data=0x025d2298, void * * * tsrm_ls=0x02784bf8)  Line 1721	C
 	php5ts_debug.dll!execute(_zend_op_array * op_array=0x025f23c8, void * * *
tsrm_ls=0x02784bf8)  Line 136 + 0x11 bytes	C
 	php5ts_debug.dll!zend_execute_scripts(int type=8, void * * *
tsrm_ls=0x02784bf8, _zval_struct * * retval=0x00000000, int file_count=3,
...)  Line 1193 + 0x21 bytes	C
 	php5ts_debug.dll!php_execute_script(_zend_file_handle *
primary_file=0x00aaf7b0, void * * * tsrm_ls=0x02784bf8)  Line 2330 + 0x1b
bytes	C
 	php.exe!main(int argc=2, char * * argv=0x02784af8)  Line 1252 + 0x13
bytes	C


-- 
Edit bug report at http://bugs.php.net/bug.php?id=52539&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=52539&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=52539&r=trysnapshot53
Try a snapshot (trunk):              http://bugs.php.net/fix.php?id=52539&r=trysnapshottrunk
Fixed in SVN:                        http://bugs.php.net/fix.php?id=52539&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=52539&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=52539&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=52539&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=52539&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=52539&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=52539&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=52539&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=52539&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=52539&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=52539&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=52539&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=52539&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=52539&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=52539&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=52539&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=52539&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=52539&r=mysqlcfg



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