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(* this structure compiles OK *)
structure HashTable =
struct
type hashedstring = string
fun hash s = s
fun unhash s = s
end;
(* This structure reports
Exception- InternalError: incrUseCount: no entry 2 raised while compiling
*)
structure Prettyprinter =
struct
datatype printmode = compressed | uncompressed | verbose
fun print mode =
let
fun printid s = (case mode of
compressed => HashTable.hash s
| uncompressed => HashTable.unhash s
| verbose => HashTable.unhash s)
in printid
end
end;
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