panic! (the `impossible' happened, GHC version 6.2.1)

[Maciek S]

Hi,

I've got this error message:

package util -I. -DHAVE_CURSES -DHAVE_CURL -no-auto-all
-funfolding-use-threshold=20 -c SHA1.lhs
ghc-6.2.1: panic! (the `impossible' happened, GHC version 6.2.1):
        Prelude.read: no parse

Please report it as a compiler bug to glasgow-haskell-bugs at haskell.org,
or http://sourceforge.net/projects/ghc/.

trying to compile:
darcs-1.0.3_rc1

using:

ghc-bin-6.2.1

on x86_64 (amd64)

1.0.2 version of darcs compiled without problems.

I use gentoo linux.
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