- Nothing -> error ("ERROR: There is some confusion about a value specialised to a type;\ndetails follow (and more info in the User's Guide):\n\t"++(ppShow 80 (ppr PprDebug unspec_id)))
+ Nothing -> pprError "ERROR: There is some confusion about a value specialised to a type;\ndetails follow (and more info in the User's Guide):\n\t"