#6008: ghc: panic! (the 'impossible' happened)
--------------------------+-------------------------------------------------
Reporter: jtb | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.4.1 | Keywords:
Os: Linux | Architecture: x86_64 (amd64)
Failure: None/Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Comment(by michalt):
Thanks for reporting! This seems to be fixed in HEAD :)
{{{
> ~/dev/ghc-clean/inplace/bin/ghc-stage2 -O2 -fforce-recomp -rtsopts
keltis_typedefs.hs
[1 of 1] Compiling Main ( keltis_typedefs.hs,
keltis_typedefs.o )
keltis_typedefs.hs:6:29:
Illegal deriving item `eq'
In the data declaration for `PlayingCard'
keltis_typedefs.hs:13:24:
Illegal deriving item `eq'
In the data declaration for `Colour'
keltis_typedefs.hs:16:29:
Illegal deriving item `eq'
In the data declaration for `PlayersHand'
}}}
but not in the 7.4 branch. I'm not closing since I'm not sure which commit
did
actually fix this and if it is easy to merge it into 7.4 branch (from
briefly
looking at the logs it might have been
3bf54e78cfd4b94756e3f21c00ae187f80c3341d).
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6008#comment:2>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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