is this even possible? newbie + mixin template + foreach (allMembers)

[Alex]

On Tuesday, 3 April 2018 at 18:57:29 UTC, WebFreak001 wrote:
>
> you need to use a static foreach for this. You can insert a 
> static foreach basically where you can insert a function 
> definition like void foo() {}
>
> foreach is more like a function call like foo(), so you can't 
> put it in the mixin template.
>
> A mixin template is basically expected to be mixin-able in 
> global scope or in a class/struct so it can't have any things 
> like function calls because that would be the same as writing 
> `foo();` at global level instead of in the main function.
>
> static foreach on the other hand allows exactly that because it 
> literally unrolls the contents and inserts it multiple times, 
> so you can also put it in mixin templates if the content of the 
> loop is valid in mixin templates.
>
> If you need to support older compilers you can use normal 
> foreach with ctfe by generating a code string or do recursive 
> templates, but I would really encourage you to use static 
> foreach instead, it is cleaner and faster.

I think, the OP has something other in mind. Look at this:

´´´
void main(){}

struct World
{
	float	 rotation;
	bool	 active;
	
	//mixin BuildStuff!();
}

mixin BuildStuff!();

mixin template BuildStuff()
{
	static foreach(elem; __traits(allMembers, World))
	{
		pragma(msg, elem);
	}
}
´´´

While the outer mixin works as expected, the inner one results in 
a seg fault.
No idea why, however, too...