*** setup configure

Reading installed packages...
/usr/local/bin/ghc-pkg list
Dependency Cabal >=1.2.1: using Cabal-1.6.0.1
Creating setup (and its parents)
/usr/local/bin/ghc -package Cabal-1.6.0.1 --make Setup.hs -o setup/setup -odir setup -hidir setup
[1 of 1] Compiling Main             ( Setup.hs, setup/Main.o )
Linking setup/setup ...
setup/setup configure --ghc --user --prefix=/usr/local/tmp/archive/install --haddock-option=--use-contents=http://hackage.haskell.org/cgi-bin/hackage-scripts/package/rewriting-0.1 --verbose
Configuring rewriting-0.1...
Dependency base >=3.0: using base-3.0.2.0
Dependency containers >=0.1: using containers-0.1.0.2
Using Cabal-1.6.0.1 compiled by ghc-6.8
Using compiler: ghc-6.8.3
Using install prefix: /usr/local/tmp/archive/install
Binaries installed in: /usr/local/tmp/archive/install/bin
Libraries installed in:
/usr/local/tmp/archive/install/lib/rewriting-0.1/ghc-6.8.3
Private binaries installed in: /usr/local/tmp/archive/install/libexec
Data files installed in: /usr/local/tmp/archive/install/share/rewriting-0.1
Documentation installed in:
/usr/local/tmp/archive/install/share/doc/rewriting-0.1
Using alex version 2.2 found on system at: /usr/bin/alex
Using ar found on system at: /usr/bin/ar
Using c2hs version 0.15.1 found on system at: /usr/local/bin/c2hs
Using cpphs version 0.7 found on system at: /usr/bin/cpphs
Using ffihugs found on system at: /usr/local/bin/ffihugs
Using gcc version 4.3.2 found on system at: /usr/bin/gcc
Using ghc version 6.8.3 found on system at: /usr/local/bin/ghc
Using ghc-pkg version 6.8.3 found on system at: /usr/local/bin/ghc-pkg
No greencard found
Using haddock version 2.3.0 found on system at: /usr/local/bin/haddock
Using happy version 1.17 found on system at: /usr/local/bin/happy
No hmake found
Using hsc2hs version 0.66 found on system at: /usr/local/bin/hsc2hs
Using hscolour version 1.9 found on system at: /usr/local/bin/HsColour
Using hugs found on system at: /usr/local/bin/hugs
No jhc found
Using ld found on system at: /usr/bin/ld
No nhc98 found
Using pkg-config version 0.22 found on system at: /usr/bin/pkg-config
Using ranlib found on system at: /usr/bin/ranlib
Using strip found on system at: /usr/bin/strip
Using tar found on system at: /bin/tar

*** setup build

setup/setup build --verbose
Creating dist/build (and its parents)
Creating dist/build/autogen (and its parents)
Preprocessing library rewriting-0.1...
Building rewriting-0.1...
Building library...
Creating dist/build (and its parents)
/usr/local/bin/ghc -package-name rewriting-0.1 --make -hide-all-packages -i -idist/build -isrc -idist/build/autogen -Idist/build/autogen -Idist/build -optP-include -optPdist/build/autogen/cabal_macros.h -odir dist/build -hidir dist/build -stubdir dist/build -package base-3.0.2.0 -package containers-0.1.0.2 -O Generics.Regular.Rewriting Generics.Regular.Rewriting.Base Generics.Regular.Rewriting.Representations Generics.Regular.Rewriting.Machinery Generics.Regular.Rewriting.Rules Generics.Regular.Rewriting.Strategies
[1 of 6] Compiling Generics.Regular.Rewriting.Representations ( src/Generics/Regular/Rewriting/Representations.hs, dist/build/Generics/Regular/Rewriting/Representations.o )
[2 of 6] Compiling Generics.Regular.Rewriting.Base ( src/Generics/Regular/Rewriting/Base.hs, dist/build/Generics/Regular/Rewriting/Base.o )
ghc-6.8.3: panic! (the 'impossible' happened)
  (GHC version 6.8.3 for i386-unknown-linux):
	initC: srt_lbl

Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug