Let Crash.hs be:
module Crash where
import Data.Word (Word64)
data S = S { a :: ! Word64 }
s :: S
s = S { a = 0 }
Then:
(mbs@emae) ghci-5.04 -fglasgow-exts
___ ___ _
/ _ \ /\ /\/ __(_)
/ /_\// /_/ / / | | GHC Interactive, version 5.04, for Haskell 98.
/ /_\\/ __ / /___| | http://www.haskell.org/ghc/
\____/\/ /_/\____/|_| Type :? for help.
Loading package base ... linking ... done.
Loading package haskell98 ... linking ... done.
Prelude> :l Crash
Compiling Crash ( Crash.hs, interpreted )
ghc-5.04: panic! (the `impossible' happened, GHC version 5.04):
ByteCodeGen.mkUnpackCode LW_
Please report it as a compiler bug to [EMAIL PROTECTED],
or http://sourceforge.net/projects/ghc/.
Only happens with combination of Word64 and !
Regards,
Mark
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