[Issue 2538] New: Private inheritance doesn't work for interfaces

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=2538

           Summary: Private inheritance doesn't work for interfaces
           Product: D
           Version: 2.022
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Keywords: rejects-valid
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: 2korden at gmail.com


Whenever I inherit from interface privately, compiler rises an error that
inherited abstract methods are not implemented:

module test;

interface NetworkListener
{
    void onConnect();
}

class SoundManager : private NetworkListener
{
    private final void onConnect()
    {
    }
}

test.d(8): class test.SoundManager interface function NetworkListener.onConnect
isn't implemented

I use private inheritance because I don't want my classes to be used as
listeners by anyone but the class itself (or module it is declared in). Use
case: it is an implementation detail that SoundManager is also a
NetworkListener (because I allow tuning sounds from authoring tool via debug
connection).

Both DMD1.x and DMD2.x are affected.


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