ghc panic during build

Gintautas Miliauskas gintautas.miliauskas at gmail.com
Mon Nov 3 16:30:32 UTC 2014


Just got this during a build:

"inplace/bin/ghc-stage1.exe" -hisuf hi -osuf  o -hcsuf hc -static  -H32m -O
-Werror -Wall -H64m -O0    -this-package-key base_ESD4aQEEWwsHtYJVc1BwtJ
-hide-all-packages -i -ilibraries/base/.
-ilibraries/base/dist-install/build
-ilibraries/base/dist-install/build/autogen
-Ilibraries/base/dist-install/build
-Ilibraries/base/dist-install/build/autogen -Ilibraries/base/include
-optP-DOPTIMISE_INTEGER_GCD_LCM -optP-include
-optPlibraries/base/dist-install/build/autogen/cabal_macros.h -package-key
ghcpr_BE58KUgBe9ELCsPXiJ1Q2r -package-key integ_BcPVjqcazPNGsNFG4agFty
-package-key rts -this-package-key base -XHaskell2010 -O2 -O -dcore-lint
-fno-warn-deprecated-flags -fno-warn-tabs  -no-user-package-db -rtsopts
 -odir libraries/base/dist-install/build -hidir
libraries/base/dist-install/build -stubdir
libraries/base/dist-install/build   -c libraries/base/./GHC/TypeLits.hs -o
libraries/base/dist-install/build/GHC/TypeLits.o
ghc-stage1.exe: panic! (the 'impossible' happened)
  (GHC version 7.9.20141031 for x86_64-unknown-mingw32):
        Ix{Int}.index: Index (2053) out of range ((0,10))

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

libraries/base/ghc.mk:4: recipe for target
'libraries/base/dist-install/build/GHC/TypeLits.o' failed

I may have been building in a non-clean repository after a git pull though,
could that have caused this?

-- 
Gintautas Miliauskas
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