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https://issues.apache.org/jira/browse/MESOS-6496?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Neil Conway updated MESOS-6496:
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Description: 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. (was: 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.)
> Support up-casting of Shared<T> and Owned<T>
> --------------------------------------------
>
> 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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