On Wed, Dec 12, 2012 at 12:24 PM, Andras Gyomrey <lgand...@gmail.com> wrote: > Hi, > > i got the following error using "yesod devel" it happened after adding the > file which seems to have invalid content (not true). What should i do?
The first bit of your error message indeed indicates `./Handler/Model/Season.hs` isn’t encoded as `hGetContents` expects: > yesod: ./Handler/Model/Season.hs: hGetContents: invalid argument (invalid > byte sequence) `System.IO.hGetContents` converts into Unicode from the default encoding configured in your system unless explicitly told otherwise with `hSetEncoding`[1]. You can check what this encoding is with the GHC primitive `GHC.IO.Encoding.getLocaleEncoding`[2], or with the somewhat less reliable `System.IO.localeEncoding` runtime constant. This StackOverflow answer has some good pointers on inference and validation of file encoding: <http://unix.stackexchange.com/a/11648> The simplest solution is, of course, to set your system encoding to UTF‐8, and make sure your source code is encoded accordingly. GNU iconv is quite handy for encoding conversions. Remember to tell your editor to default to UTF‐8 in case it doesn’t detect the system encoding — or better yet, switch to a better editor that does. The heap corruption does indeed indicate a bug somewhere, though not necessarily in Yesod code. If I understand this correctly, the exception is uncaught (and printed by the default uncaught exception handler[4] that, in turn, calls `errorBelch` in the RTS[5]) and the heap corruption becomes evident only later during the GHC runtime’s cleanup, whatever that may be. [1]: <http://www.haskell.org/ghc/docs/latest/html/libraries/base/System-IO.html#g:23> [2]: <http://www.haskell.org/ghc/docs/latest/html/libraries/base/GHC-IO-Encoding.html#v:getLocaleEncoding> [3]: <http://www.gnu.org/savannah-checkouts/gnu/libiconv/documentation/libiconv-1.13/iconv.1.html> [4]: <http://hackage.haskell.org/packages/archive/base/4.2.0.0/doc/html/src/GHC-Conc.html#uncaughtExceptionHandler> [5]: Lines 34 and 174–202 of <rts/RTSMessages.c> in the GHC source <http://darcs.haskell.org/ghc.git/rts/RtsMessages.c> _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
