Bugs item #605164, was opened at 2002-09-05 13:37
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=108032&aid=605164&group_id=8032
Category: Compiler
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Ken Shan (ccshan)
Assigned to: Nobody/Anonymous (nobody)
Summary: panic: tcSplitTyConApp with rank-2 type
Initial Comment:
The following program causes GHC 5.04 (i386-linux) to
panic:
{-# OPTIONS -fglasgow-exts #-}
module Bug where
newtype Bug s a = Bug a
runBug :: (forall s. Bug s a) -> a
runBug (Bug _) = undefined
cruella:~/u/texmacs$ ghc -c Bug.hs
ghc-5.04: panic! (the `impossible' happened, GHC
version 5.04):
tcSplitTyConApp
forall s{-r3V-} :: *. Bug.Bug{-r2-} s{-r3V-} a{-aaA-}
Please report it as a compiler bug to
[EMAIL PROTECTED],
or http://sourceforge.net/projects/ghc/.
Attached is a transcript.
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