#46236 [Asn->Fbk]: Negative integer overflow handled incorrectly

From: Date: Tue, 11 Nov 2008 08:42:22 +0000
Subject: #46236 [Asn->Fbk]: Negative integer overflow handled incorrectly
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-130863@lists.php.net to get a copy of this message 
 ID:               46236
 Updated by:       tony2001@php.net
 Reported By:      wlalk at wtfs dot za dot net
-Status:           Assigned
+Status:           Feedback
 Bug Type:         Scripting Engine problem
 Operating System: Linux (2.6.18)
 PHP Version:      5.2.6
 Assigned To:      tony2001
 New Comment:

Cannot reproduce anything like that.
And I don't have 32bit machine for tests.

#php -r 'var_dump((int)(-PHP_INT_MAX - 10));'
int(-9223372036854775808)
#php -v
PHP 5.2.7RC3-dev (cli) (built: Oct 31 2008 19:06:58) (DEBUG)


Previous Comments:
------------------------------------------------------------------------

[2008-11-10 20:24:06] jani@php.net

Antony, your fix was not enough?

------------------------------------------------------------------------

[2008-10-05 11:22:50] wlalk at wtfs dot za dot net

Description:
------------
Large negative integer not overflowing correctly.

Same problem as Bug #38908 but with version 5.2.6.

Bug #38908 claims to have been fixed as of 26 September 2006.

Reproduce code:
---------------
echo (int)(-2432869008);
echo (int)(2432869008);

Expected result:
----------------
1862098288
-1862098288 

Output as generated by a windows based server.

Actual result:
--------------
-2147483648
-1862098288 

Output as generated by a linux based server.


------------------------------------------------------------------------


-- 
Edit this bug report at http://bugs.php.net/?id=46236&edit=1

Thread (3 messages)

« previous php.bugs (#130863) next »