Why (on earth) does
struct S
{
@disable this(this);
int* _ptr;
}
pragma(msg, typeof(S.tupleof));
prints
(int*, void*)
when
struct S
{
int* _ptr;
}
pragma(msg, typeof(S.tupleof));
prints
(int*)
?!!!
This prevents the trait `mustAddGCRangeOfStructOrUnion` [1] from
detecting when a container with manual memory management doesn't
have to be scanned by the GC as in, for instance,
enum NoGc;
struct S
{
@disable this(this); // disable S postlib
@NoGc int* _ptr;
}
static assert(!mustAddGCRangeOfStructOrUnion!S); // is false
when postblit of `S` is disabled
[1]
https://github.com/nordlow/phobos-next/blob/master/src/gc_traits.d#L81
