Re: [nhc-users] Help needed with a compiling error

HP Wei wrote:

Fail: superclassesI InfoUsedClass 52 [(Type class, Text.Printf.PrintfArg, "ftnirP.txeT", 52:11-52:19)] ...

nhc98 is confused about whether the classes defined in Test.Printf are necessary or not. There is a workaround: explicit imports. Replace import Text.Printf with import Text.Printf (IsChar(),PrintfArg(),printf) and everything will work OK. Regards, Malcolm