double arrows causes a panic

Trying to load code like the following:

test = proc inp -> show -< id -< inp

will cause both ghc and ghci to panic with this message:

ghc-6.2: panic! (the `impossible' happened, GHC version
6.2):
        tcMonoExpr GHCziBase.id {- v r8k -} -< inp {- v
aPp -}

As far as I can tell, it's the "a -< b -< c" that's
causing problems.

- abe.egnor@gmail.com

Trac metadata

Trac field	Value
Version	6.2
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	ResolvedFixed
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture

changed weight to 5

added Tbug Trac import labels

Logged In: NO 

This is the same bug as

http://www.haskell.org//pipermail/glasgow-haskell-bugs/2004-March/003944.html

I believe the fix is included in 6.2.1.

-- Ross Paterson

closed

mentioned in commit e34e7e28

mentioned in commit d1c8ba4b

added Pnormal label