Code: http://dpaste.dzfl.pl/6ae9f91a
Can someone explain me these results (switch the version statement from 'none' to 'all' in 'reserve')?
Is it possible that I blown the stack frame? If so: why and can my code/idea work?

Namespace:

> Code: http://dpaste.dzfl.pl/6ae9f91a

I think you can't use alloca() lie this, buf vanishes when the
constructor ends:

	this(const size_t len)(ref T[len] arr) {
		this._buf = cast(T*) alloca(len * T.sizeof);
		
		for (size_t i = 0; i < len; ++i) {
			this._buf[i] = arr[i];
		}
		
		this._length = len;
	}

Bye,
bearophile

On Sunday, 18 November 2012 at 01:55:48 UTC, Namespace wrote:
> Code: http://dpaste.dzfl.pl/6ae9f91a
> Can someone explain me these results (switch the version statement from 'none' to 'all' in 'reserve')?
> Is it possible that I blown the stack frame? If so: why and can my code/idea work?

Maybe the array is allocated in the frame of the constructor which is lost afterwards.

Tobias Pankrath:

> Maybe the array is allocated in the frame of the constructor which is lost afterwards.

That's probably right, you can't use alloca that way (It seems my answer yesterday got lost).

Bye,
bearophile

On 18.11.2012 16:21, bearophile wrote:
> Tobias Pankrath:
>
>> Maybe the array is allocated in the frame of the constructor which is
>> lost afterwards.
>
> That's probably right, you can't use alloca that way (It seems my answer
> yesterday got lost).
>
> Bye,
> bearophile

I just took a look. It's in my mailbox but does not show up in the web interface.

Ok, understood.
I hoped that I could create a better interface.

On 18.11.2012 16:46, Namespace wrote:
> Ok, understood.
> I hoped that I could create a better interface.

I think a good interface would be a generic array class/struct that can be parameterized to use a stack allocator.

On Sunday, 18 November 2012 at 16:01:10 UTC, Tobias Pankrath wrote:
> On 18.11.2012 16:46, Namespace wrote:
>> Ok, understood.
>> I hoped that I could create a better interface.
>
> I think a good interface would be a generic array class/struct that can be parameterized to use a stack allocator.

The best would be if my code would work.
I wish some syntax like:
int len = 42;
int[len] arr = stackalloc!(int)(len);