using memset withing a pure function

[D_Learner via Digitalmars-d-learn]

On Saturday, 15 August 2015 at 01:13:02 UTC, Adam D. Ruppe wrote:
> On Saturday, 15 August 2015 at 01:09:15 UTC, D_Learner wrote:
>> When writting a pure fucntion involving C non pure functions 
>> like
>>  memcpy() and   memset()
>
> Those functions are pure already, and marked so in the newest 
> dmd (and I think older ones too, though I haven't confirmed.
>
> Your code compiled out of the box for me.
>
> BTW D also has some syntax sugar for them:
>
> arr[start .. end] = 0; // memset those bounds to 0
> arr[start .. end] = arr2[start .. end]; // memcpy

Well, the actual error I got is :  Error: memset cannot be 
interpreted at compile time, because it has no available source 
code . I seems to suggest I miss the actual code.