Ticket #5662 (closed bug: duplicate)
GHCi crashes in context of banana bracket in arrow notation
Description
Loading the attached haskell file in GHCi results in the following message. Compiling with ghc however is successful.
ghc.exe: panic! (the 'impossible' happened)
(GHC version 7.0.3 for i386-unknown-mingw32):
addTickHsExpr
(|/\(@ a{tv ayK} [sk]).
(arrows-0.4.4.0:Control.Arrow.Transformer.State.runState{v rgG} [gid]) @ arr{tv ayH} [sk] @ ghc-prim:GHC.Types.Int{(w) tc 3J} @ a{tv ayK} [sk] @ ghc-prim:GHC.Types.Int{(w) tc 3J}
$dArrow{v aCr} [lid] (((main:Main.goodArrow{v rp6} [lid])
@ (arrows-0.4.4.0:Control.Arrow.Transformer.State.StateArrow{tc rgD}
ghc-prim:GHC.Types.Int{(w) tc 3J} arr{tv ayH} [sk])
$dArrowState{v aCs} [lid] -< b{v apd} [lid]))|)

