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From "Benjamin Bannier (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MESOS-6496) Support construction of Shared<Base> and Owned<Base> from managed Derived*
Date Thu, 03 Nov 2016 19:46:58 GMT

     [ https://issues.apache.org/jira/browse/MESOS-6496?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Benjamin Bannier updated MESOS-6496:
------------------------------------
    Summary: Support construction of Shared<Base> and Owned<Base> from managed
Derived*  (was: Support up-casting of Shared<T> and Owned<T>)

> Support construction of Shared<Base> and Owned<Base> from managed Derived*
> --------------------------------------------------------------------------
>
>                 Key: MESOS-6496
>                 URL: https://issues.apache.org/jira/browse/MESOS-6496
>             Project: Mesos
>          Issue Type: Bug
>          Components: libprocess
>            Reporter: Neil Conway
>            Assignee: Neil Conway
>              Labels: mesosphere, tech-debt
>
> It should be possible to pass a {{Shared<Derived>}} value to an object that takes
a parameter of type {{Shared<Base>}}. Similarly for {{Owned}}. In general, {{Shared<T2>}}
should be implicitly convertable to {{Shared<T1>}} iff {{T2*}} is implicitly convertable
to {{T1*}}. In C++11, this works because they define the appropriate conversion constructor.



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