C++ interop, abstract struct problem

[Paul Backus]

On Monday, 28 December 2020 at 15:42:26 UTC, RSY wrote:
> ``IAllocator`` is an abstract struct, (a struct with virtual 
> functions)
>
> But the problem is D doesn't allow that, so apparently i need 
> to use an abstract class and wrap it using: ``extern (C++, 
> struct)``

You could try using one of the techniques on this page to make 
`IAllocator` a struct instead of a class:

https://dlang.org/spec/cpp_interface.html#structs