Void initialization

[Timon Gehr]

On 12/19/2011 01:04 PM, Bear wrote:
> Using D1, I have a program that creates tons of float[] ; for performance
> reasons, I would like them to be uninitialized.
> I've tried replacing
>
> float[] f = new float[x];
> by
> float[] f = cast(float[])std.gc.malloc(x*4);
>
>
> Unfortunately I keep running into "Access violation" and sometimes "Array
> bounds error". I've tried adding
>
> setTypeInfo(typeid(float), f.ptr);
> and hasNoPointer(f.ptr);
>
> which didn't work.
>
> However
> f[] = float.nan;
> solved the problem, but kinda defeats the purpose of using malloc...
> What am I doing wrong?

Are you using GDC?
https://bitbucket.org/goshawk/gdc/issue/287/casting-between-array-types-is-broken

If so, this is the workaround:

float[] f = (cast(float[])std.gc.malloc(x*4))[0..x];