pub unsafe fn write_shared_ptr(cell: *const SharedCell, bits: u64)Expand description
Write a raw 8-byte pointer payload to a SharedCell whose interior
FieldKind is Ptr. The caller is responsible for refcount semantics
— this writer does NOT release the previous payload nor retain the new
one. For Ptr payloads the standard pattern is to read the old bits,
release them, then write the new (already-retained) bits.
§Safety
cell must point to a live SharedCell whose interior FieldKind is
Ptr.