[Issue 7315] 'out' parameters should be covariant

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=7315

mhh <maxhaton at gmail.com> changed:

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
                 CC|                            |maxhaton at gmail.com
         Resolution|---                         |INVALID

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