Crash when passing string to gmp_testbit

Bug #66872 Crash when passing string to gmp_testbit
Submitted: 2014-03-09 20:22 UTC Modified: 2014-03-10 12:11 UTC
From: contact at dimitrifourny dot com Assigned: nikic (profile)
Status: Closed Package: Reproducible crash
PHP Version: 5.6.0alpha3 OS: Windows7 x64
Private report: No CVE-ID: None

 [2014-03-09 20:22 UTC] contact at dimitrifourny dot com

Description:
------------
Hello!

I have found a possible security issues.
Can you fix it to make a more stable PHP version please?

Thank you for your good job!

Test script:
---------------
<?php
    gmp_testbit(str_repeat("A", 2000), 1);
?>

Actual result:
--------------
A nice crash on Windows 7 x64.

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 [2014-03-10 12:11 UTC] nikic@php.net

-Summary: A reproductible crash in PHP 5.6 (5.6.0alpha3) +Summary: Crash when passing string to gmp_testbit -Assigned To: +Assigned To: nikic