#7593: Unable to print exceptions of unicode identifiers ----------------------------------------------+----------------------------- Reporter: dagit | Owner: Type: bug | Status: new Priority: normal | Component: Compiler Version: 7.6.1 | Keywords: Os: Windows | Architecture: Unknown/Multiple Failure: Incorrect warning at compile-time | Blockedby: Blocking: | Related: ----------------------------------------------+----------------------------- I suspect this is windows specific but I'm not certain (I couldn't reproduce it with an older ghc on osx). Here is an example of the problem: {{{ $ ghcii.sh GHCi, version 7.6.1: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Prelude λ> ⇒ <interactive>:2:1: parse error on input `*** Exception: <stderr>: hPutChar: invalid argument (invalid character) }}} On other platforms the message looks more like: parse error on input `=>' (not the automatic translation from ⇒ to =>, I think that's a separate bug related to the unicode symbols extension) On windows my ghc is version 7.6.1. On OSX (where I could NOT reproduce the exception), my ghc is 7.4.1. I don't know if the GHC version matters. I strongly suspect this is a windows unicode issue. GHC gives similar behavior to ghci, for example on this input: {{{ ⇒ = 1 }}} ghc tries to give an error message but throws an exception printing ⇒. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7593 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler