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Posted to issues@commons.apache.org by "Sebb (JIRA)" <ji...@apache.org> on 2013/12/30 23:56:51 UTC

[jira] [Updated] (NET-521) SubnetUtils.SubnetInfo.getAddressCount() can overflow as it returns an int

     [ https://issues.apache.org/jira/browse/NET-521?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sebb updated NET-521:
---------------------

    Fix Version/s: 3.4

> SubnetUtils.SubnetInfo.getAddressCount() can overflow as it returns an int
> --------------------------------------------------------------------------
>
>                 Key: NET-521
>                 URL: https://issues.apache.org/jira/browse/NET-521
>             Project: Commons Net
>          Issue Type: Bug
>    Affects Versions: 3.3
>            Reporter: Sebb
>             Fix For: 3.4
>
>
> The method SubnetUtils.SubnetInfo.getAddressCount() returns an int.
> However a CIDR with 0 or 1 bits in the routing mask can represent more than Integer.MAX_VALUE entries, so the method cannot currently return the correct value.
> Unfortunately, if the method were changed to return a long it would break binary compatibility (the return type is part of the API signature).
> One possible solution is to provide a new method which returns a long, and deprecate the old method.
> If the original method cannot return the correct value, it should probably throw a runtime error.



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