April 01, 2012
http://d.puremagic.com/issues/show_bug.cgi?id=7807

           Summary: Ambiguous virtual function error on const overloading
                    with covariant return types
           Product: D
           Version: D2
          Platform: x86_64
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: rbixby@hotmail.com


--- Comment #0 from Read Bixby <rbixby@hotmail.com> 2012-04-01 13:55:17 PDT ---
The following code produces the error:  "Error: class Implementation ambiguous virtual function getNext"

interface Interface
{
    Interface getNext();
    const(Interface) getNext() const;
}

class Implementation : Interface
{
    Implementation getNext()
    {
        return null;
    }

    const(Implementation) getNext() const
    {
        return null;
    }
}

The error does not appear if "Interface" is changed to an abstract class.

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April 27, 2012
http://d.puremagic.com/issues/show_bug.cgi?id=7807



--- Comment #2 from github-bugzilla@puremagic.com 2012-04-27 10:47:55 PDT ---
Commit pushed to master at https://github.com/D-Programming-Language/dmd

https://github.com/D-Programming-Language/dmd/commit/fecb72a7f64e346c27e082bf89efde83ff9ddf5b
fix Issue 7807 - Ambiguous virtual function error on const overloading with
covariant return types

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Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |bugzilla@digitalmars.com
         Resolution|                            |FIXED


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