Crumbs! You're right. Albeit only in ghci mode, not when compiling. This bug has been in GHC *forever*. Will fix.
Workaround: compile that module Simon | -----Original Message----- | From: Leon Smith [mailto:[EMAIL PROTECTED]] | Sent: 10 January 2003 06:25 | To: [EMAIL PROTECTED] | Subject: Problem with derived instances. | | This code produces "True" with ghc-5.04.2 and ghc-5.02.3. It works as I | would expect it to with ghc-4.08.1. Similarly, the derived instances of Ord | also don't work. | | The only time that I've found in my limited expermentation that equality | returns false is: | | Str "a" == Str "ab" | | best, | leon | | > infixr 3 :* | > infixr 2 :+ | > | > data RE a = RE a :+ RE a | > | RE a :* RE a | > | Cat [RE a] | > | Star (RE a) | > | Plus (RE a) | > | Opt (RE a) | > | Comp (RE a) | > | Empty | > | Str [a] | > deriving (Show, Eq, Ord) | > | > main = print (Str "ab" == (Str "a" :+ Str "b")) | _______________________________________________ | Glasgow-haskell-bugs mailing list | [EMAIL PROTECTED] | http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs _______________________________________________ Glasgow-haskell-bugs mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
