On 03/12/2015 11:35 PM, zhmt wrote:
> ubyte[] arr ;
>
> I pass the arr.ptr to c program
Unless there is sentinel value at the end of the array, you must also
pass the number of elements (as Rikki Cattermole has shown).
However, if the C function holds on to that pointer for later use, you
must also keep the array alive. You can ensure that by two general ways:
a) The D-side slice must not be a local slice. For example, it can be a
member of a long-living object or it is a module-scope variable.
b) Tell the garbage collector that there is indeed a reference to that
memory block somewhere else (even though there is no D-side reference to
it). You can do this with GC.addRoot. (The opposite function is
GC.removeRoot.)
>, it fails silently.
That's not good.
> Is there any way to cast a ubyte[] to a clang pointer?
Going off-topic, I think you mean the C language when you say "clang",
which may be confusing because there is also the compiler called clang. :)
Ali
