[ ghc-Bugs-935017 ] double arrows causes a panic

Bugs item #935017, was opened at 2004-04-14 15:44
Message generated for change (Settings changed) made by simonpj
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=108032&aid=935017&group_id=8032

Category: Compiler
Group: 6.2
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: double arrows causes a panic

Initial Comment:
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@xxxxxxxxx

----------------------------------------------------------------------

Comment By: Nobody/Anonymous (nobody)
Date: 2004-04-20 11:48

Message:
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

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=108032&aid=935017&group_id=8032