Add a compiler TODO.
@@ -110,6 +110,7 @@ pub func lzw_decoder.decode?(dst writer1, src reader1)() {
inv c < 256,
{
var expansion[] u8 = this.stack[s:]
+ // TODO: "x:" instead of "s:" should be a compiler error.
var n u64 = in.dst.copy_from_slice(x:expansion)
if n == expansion.length() {
break
