[Issue 15579] extern(C++) interfaces/multiple-inheritance

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=15579

Walter Bright <bugzilla at digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bugzilla at digitalmars.com

--- Comment #2 from Walter Bright <bugzilla at digitalmars.com> ---
Compilable D version of the code:

  extern (C++)
  {
    class Base
    {
        ~this() {}
        size_t x = 4;
    }

    interface Interface
    {
        int Method();
    }

    class Derived : Base, Interface
    {
        size_t y = 5;
        int Method() { return 3; }
    }
  }

The layout for Win64 Base is:

  4Base6__initZ:
    void* &vtbl
    size_t x;


The layout for Win64 Derived is:

  7Derived6__initZ:
    void* &vtbl
    size_t x;
    size_t y;
    void* &vtbl

These can be figured out by running obj2asm on the object file and looking at
it.

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