Load dynamic libraries with no hand-written bindings!

[Paul Backus]

On Wednesday, 7 September 2022 at 05:29:31 UTC, Andrej Mitrovic 
wrote:
> On Tuesday, 6 September 2022 at 16:50:16 UTC, Paul Backus wrote:
>> Haven't tested, but I think you may be able to simplify this 
>> by replacing
>>
>>     FuncType!(__traits(getMember, Module, member))
>>
>> with
>>
>>     typeof(&__traits(getMember, Module, member))
>>
>> ...which would let you eliminate the `FuncType` template 
>> entirely.
>
> Already tried that, but it doesn't work. Maybe it's just a bug 
> in the backend.

I'd say it's definitely a bug of some kind. This simplified 
example worked for me:

```
--- lib.c
int f(int x) { return x + 1; }

--- app.d
import lib;

typeof(&__traits(getMember, lib, "f")) fptr;
pragma(msg, typeof(fptr)); // extern (C) int function(int x)
```