transform main = struct {
	.u8 <- uint8;
	.u16le <- uint16le;
	.u16be <- uint16be;
	.u32le <- uint32le;
	.u32be <- uint32be;
	.u64le <- uint64le;
	.u64be <- uint64be;
	.empty_blob <- known_length(0);
	.ascii <- ascii <- known_length(8);
};