Function to delegate conversion

[BCS]

Kirk McDonald wrote:
> 
> The following dirty, dirty hack /appears/ to work, at least in this 
> trivial case:
> 
> import std.stdio;
> 
> struct DG {
>     Object instance;
>     void function() fn;
> }
> 
> union U {
>     DG fake_dg;

-     void delegate() real_dg;
+     void* real_dg;

> }
> 
> class A {
>     void foo() { writefln("A.foo()"); }
> }
> 
> void main() {
>     A a = new A;
>     void function() fn = &A.foo;
> 
>     U u;
>     u.fake_dg.instance = a;

-     u.fake_dg.fn = fn;
+     u.fake_dg.fn = cast(void*)fn;

> 
>     // Call it
>     u.real_dg();
> }
> 

That should also work and won't care about types. But it is still 
really, really dirty. But it's more portable that the last solution I 
saw, That one used ASM hacking.