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Bug #53403 mt_rand() without min/max uses invalid min/max values
Submitted: 2010-11-25 14:11 UTC Modified: 2010-11-25 17:44 UTC
From: php-bugs at thequod dot de Assigned: cataphract (profile)
Status: Closed Package: Unknown/Other Function
PHP Version: 5.3SVN-2010-11-25 (snap) OS: Linux
Private report: No CVE-ID: None
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 [2010-11-25 14:11 UTC] php-bugs at thequod dot de 
Description:
------------
I am getting the following warning when calling mt_rand() on 5.3.4RC2-dev (snapshot 201011231530), and it returns false:

PHP Warning:  mt_rand(): max(-1080344744) is smaller than min(137322600)


This is on a 32bit Linux container running on a 64bit host (OpenVZ).

Test script:
---------------
var_dump(mt_rand(), mt_getrandmax());

Actual result:
--------------
bool(false)
int(2147483647)

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 [2010-11-25 14:13 UTC] php-bugs at thequod dot de 
The following works btw:
  var_dump(mt_Rand(0, mt_getrandmax()));
 [2010-11-25 14:15 UTC] php-bugs at thequod dot de
-Summary: mr_rand() without min/max uses invalid min/max values +Summary: mt_rand() without min/max uses invalid min/max values
 [2010-11-25 14:15 UTC] php-bugs at thequod dot de 
Fixed title.
 [2010-11-25 16:37 UTC] cataphract@php.net
-Assigned To: +Assigned To: cataphract
 [2010-11-25 17:44 UTC] cataphract@php.net 
Automatic comment from SVN on behalf of cataphract
Revision: http://svn.php.net/viewvc/?view=revision&revision=305754
Log: - Fixed bug #53403 (use of unitialized values). Fixes the fix for bug #46587.
- Added test for bug #46587.
 [2010-11-25 17:44 UTC] cataphract@php.net
-Status: Assigned +Status: Closed
 
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