ghci panic: nameModule show{tv a9W}

[felipe zapata]

I was Editing some modules of my project, then I just tried

ghci Mymodule.hs and then I got the following error:

[1 of 6] Compiling GlobalTypes? ( GlobalTypes?.hs, interpreted ) ghc: panic! (the 'impossible' happened)

(GHC version 7.4.1 for x86_64-unknown-linux):

nameModule show{tv a9W}

Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug

[parcs]

This looks like a duplicate of #5961.

[guest]

Please post the code. If you have an invalid "deriving" clause (starting with lowercase letter), it is already fixed in GHC 7.6.

[felipe zapata]

file which caused panic because of lower case statement in deriving "show"

[guest]

It's already fixed then.