https://issues.dlang.org/show_bug.cgi?id=2168

Iain Buclaw <ibuclaw@gdcproject.org> changed:

           What    |Removed                     |Added
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           Priority|P2                          |P4

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https://issues.dlang.org/show_bug.cgi?id=2168

RazvanN <razvan.nitu1305@gmail.com> changed:

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                 CC|                            |razvan.nitu1305@gmail.com

--- Comment #3 from RazvanN <razvan.nitu1305@gmail.com> ---
You can just declare the return type of wglGetProcAddress to be of type `int
function()`:

extern(C) int function() func(char*);

And then it will work without needing the cast.

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https://issues.dlang.org/show_bug.cgi?id=2168

Dennis <dkorpel@live.nl> changed:

           What    |Removed                     |Added
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                 CC|                            |dkorpel@live.nl
           Hardware|x86                         |All
                 OS|Windows                     |All

--- Comment #4 from Dennis <dkorpel@live.nl> ---
(In reply to RazvanN from comment #3)
> And then it will work without needing the cast.

That works in this reduced example, but when doing dynamic loading, you often load multiple functions with different signatures.

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https://issues.dlang.org/show_bug.cgi?id=2168

--- Comment #5 from RazvanN <razvan.nitu1305@gmail.com> ---
(In reply to Dennis from comment #4)
> (In reply to RazvanN from comment #3)
> > And then it will work without needing the cast.
> 
> That works in this reduced example, but when doing dynamic loading, you often load multiple functions with different signatures.

In that case, this seems to work:

```
extern(C) void* func(char*);

void main()
{
    char* p = cast(char*)"func".ptr;
    extern(C) int function() glFunctionFoo = cast(int function())func(p);
    extern(C) int function(int) glFunctionFoo2 = cast(int
function(int))func(p);
    pragma(msg, typeof(glFunctionFoo));
    pragma(msg, typeof(glFunctionFoo2));
}
```

So, forcing the lhs of the assignment to extern(C) enables the cast to work.

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