Bug #72774 [NEW]: Exception backtrace produces wrong integer values when passed by reference

From: Date: Sun, 07 Aug 2016 13:56:11 +0000
Subject: Bug #72774 [NEW]: Exception backtrace produces wrong integer values when passed by reference
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-203033@lists.php.net to get a copy of this message 
From:             eyalt
Operating system: Linux
PHP version:      7.0.9
Package:          Variables related
Bug Type:         Bug
Bug description:Exception backtrace produces wrong integer values when passed by reference

Description:
------------
Exception backtrace produces wrong integer values when passed by
reference - a regression VS PHP 5.x, as can be seen in the test script.

Test script:
---------------
<pre><?php
function recurse_bug($count) {
	if ($count) {
		return recurse_bug(--$count); // if we use instead $count - 1, then BT
will be prodcued OK on PHP 7 too
	}
	$e = new Exception();
	print $e->getTraceAsString();
}
recurse_bug(2);
/*  On PHP 5.x we will get the correct BT:
#0 /var/www/html/frontend/scrap.php(4): recurse_bug(0)
#1 /var/www/html/frontend/scrap.php(4): recurse_bug(1)
#2 /var/www/html/frontend/scrap.php(9): recurse_bug(2)
#3 {main}

On PHP 7.x we will get the following wrong BT:
#0 /var/www/html/frontend/scrap.php(4): recurse_bug(0)
#1 /var/www/html/frontend/scrap.php(4): recurse_bug(0)
#2 /var/www/html/frontend/scrap.php(9): recurse_bug(1)
#3 {main} */

Expected result:
----------------
#0 /var/www/html/frontend/scrap.php(4): recurse_bug(0)
#1 /var/www/html/frontend/scrap.php(4): recurse_bug(1)
#2 /var/www/html/frontend/scrap.php(9): recurse_bug(2)
#3 {main}

Actual result:
--------------
#0 /var/www/html/frontend/scrap.php(4): recurse_bug(0)
#1 /var/www/html/frontend/scrap.php(4): recurse_bug(0)
#2 /var/www/html/frontend/scrap.php(9): recurse_bug(1)
#3 {main} */

-- 
Edit bug report at https://bugs.php.net/bug.php?id=72774&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=72774&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=72774&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=72774&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=72774&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=72774&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=72774&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=72774&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=72774&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=72774&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=72774&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=72774&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=72774&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=72774&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=72774&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=72774&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=72774&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=72774&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=72774&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=72774&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=72774&r=mysqlcfg

Thread (3 messages)

« previous php.bugs (#203033) next »