Cannot check function address

[frame]

On Wednesday, 25 May 2022 at 03:41:17 UTC, Steven Schveighoffer 
wrote:

> This is a compiler bug, at least I think so. Since the compiler 
> is misbehaving, it's not clear how to make it behave.
>
> -Steve

Well, ok, it's not my top priority and dustmite seems to run 
better on Unix - which I need to port anyway some time but not 
now.

But it must be possible to check if the function pointer is valid 
in Assembler? But I'm not familiar with asm to do it correctly - 
I would be very appreciative if someone could post an example how 
to do it in D.

So far, thank you for your time.