let x = decode $(C.pack. C.unpack) au :: Maybe AuctionInfo

so confused... I have asked one of my friends to compile this code. And he also got an fail It seems this bug only occurs on a 32-bit version ghc update: my friends said he changes the decode line into a ugly way: then he got an ok but i did so, also fail... Subject: Re: [Haskell-cafe] a bug of 32bit ghc on mac ? From: hutch-lists@recursive.ca Date: Wed, 1 May 2013 05:43:46 -0400 CC: haskell-cafe@haskell.org To: sray@live.com I compiled and ran it a few hundred times in a script with no failures. I've got the same version of GHC on OS X 10.8.3. BTW, it's not just Yesod that has that bug you mentioned in the 64-bit version. Cheers,Bob On 2013-04-30, at 11:37 PM, Sray wrote: hi all it seems i have met some bug on a MAC 32bit GHC version 7.4.2 to make long stroy short, my code is about parse a json file using aeson here is my code http://pastebin.com/0VcVhdvX and here is test data http://pastebin.com/PvtSvst5 and test steps save the code , and name it a.hs (or what you want) save the test data ,name it a.json (do not change its name) $ ghc a.hs -o a $ ./a what i get from the output is "fail" and when i run the command below for a few times $ runghc a.hs i even got some ok and some fail mixed together but i copy the code and compile it on my linux, everything goes fine, the output is "OK" i have run "uninstall-hs" and install a 64bit ghc, also goes fine i delete one line randomly chosen from my test data , got an ok roll back ,delete another line, also an ok... I just want to make sure is this my bug or a bug of ghc p.s. the reason using 32bit ghc is yesod, which has met another bug on 64bit mac ghc :( thanks sray _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe