// CFTypeRef is a supertype of those, so it can have bad pointers in it as well.
	// We return true for the other *Ref types just so casting between them is easier.
	// We identify the correct set of types as those ending in Ref and for which
	// there exists a corresponding GetTypeID function.
	// See comment below for details about the bad pointers.
	if goos != "darwin" && goos != "ios" {
		return false
	}
	s := dt.Name