[Haskell-cafe] Horray, a ghc bug!

[Stijn van Drongelen]

Hi,

Have you tried the same with 7.6.1? When I search for RnSource.lhs:429 on
Google, I find multiple GHC tickets, marked as 'solved in 7.6.1'.

Kind regards,

Stijn van Drongelen


On Fri, Oct 18, 2013 at 3:04 PM, Andreas Abel <andreas.abel at ifi.lmu.de>wrote:

> You do not get them often, but here is one...
>
> [208 of 254] Compiling Agda.TypeChecking.MetaVars.**Occurs (
> src/full/Agda/TypeChecking/**MetaVars/Occurs.hs,
> dist/build/Agda/TypeChecking/**MetaVars/Occurs.o )
> ghc: panic! (the 'impossible' happened)
>   (GHC version 7.4.1 for x86_64-unknown-linux):
>         compiler/rename/RnSource.lhs:**429:14-81: Irrefutable pattern
> failed for pattern Data.Maybe.Just (inst_tyvars,
>                                                         _,
>                                                         SrcLoc.L _ cls,
>                                                         _)
>
> Please report this as a GHC bug:  http://www.haskell.org/ghc/**reportabug<http://www.haskell.org/ghc/reportabug>
>
>
> --
> Andreas Abel  <><      Du bist der geliebte Mensch.
>
> Theoretical Computer Science, University of Munich
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>
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