CTFE limitation on reinterpreting cast

[Rambutan]

On Monday, 28 September 2026 at 23:20:17 UTC, monkyyy wrote:
> I believe only void* works `void* ptr=cast(void*)&Bobj;`; 
> otherwise all the colored gc  will get in your way. Im only 
> aware of work around with type synchronicity and I probably 
> have tried the hardest

I have had no trouble doing this with function pointers earlier. 
Here's a meaningless small example.
```
extern(C) int f1() { return 0; }

__gshared auto f2 = cast(int function(int,char*))&f1;

void main() {}
```
This compiles just fine.