literal, or by taking the address of a local variable may also have their
memory pinned using [runtime.Pinner]. This type may be used to manage
the duration of the memory's pinned status, potentially beyond the
duration of a C function call. Memory may be pinned more than once and
must be unpinned exactly the same number of times it has been pinned.

Go code may pass a Go pointer to C provided the memory to which it