http://d.puremagic.com/issues/show_bug.cgi?id=9093

           Summary: Overloads in extern(C++) interfaces throw up COMDAT
                    errors
           Product: D
           Version: D2
          Platform: x86_64
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: gooberman@gmail.com


--- Comment #0 from Ethan Watson <gooberman@gmail.com> 2012-11-28 08:58:22 PST ---
Fairly simple description - create an interface that externs to C++ with a couple of overloads. Create a class that implements that interface. COMDAT has an error with defining multiple symbols as a result.

Sample code:

extern (C++) interface ICameraLens
{
    float NearPlane();
    float NearPlane(float p);

}


class NewCameraLens : ICameraLens
{
    extern (C++) float NearPlane() { return 0; }
    extern (C++) float NearPlane(float p) { return 0; }
}

Compiling with the Win64 compiler.

Issue originally was found when working with properties; however, the error occurs on any overloaded extern'd function.

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Rainer Schuetze <r.sagitario@gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch
                 CC|                            |r.sagitario@gmx.de


--- Comment #1 from Rainer Schuetze <r.sagitario@gmx.de> 2012-11-30 01:40:00 PST ---
There's been no mangling at all so far.

https://github.com/D-Programming-Language/dmd/pull/1338

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--- Comment #2 from github-bugzilla@puremagic.com 2012-12-01 22:28:56 PST ---
Commit pushed to master at https://github.com/D-Programming-Language/dmd

https://github.com/D-Programming-Language/dmd/commit/23d3b452cd88cc5b9eb373014b8566d595aa2bf7 Merge pull request #1338 from rainers/win64_cpp_mangle

fix issue 9093: C++ symbol mangling for Win64

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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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