Spelling "show" with lovercase causes compiler crash

[fjolle]

The embedded code in this report makes GHC panic. I accidentally spelled "show" with a lowercase s.

This is the output when trying to load the script in GHCi:

*Main> :r [1 of 1] Compiling Main ( btree.hs, interpreted ) ghc.exe: panic! (the 'impossible' happened)

(GHC version 7.4.2 for i386-unknown-mingw32):

nameModule show{tv alJ}

type Vejnavn = String
type By = String

data Adresse = Adresse Vejnavn By
	deriving(show)

[guest]

This is already fixed in HEAD. See bug #5961.