Panic when building HEAD with BuildFlavour=quickest: "Can't use Integer in integer-*"

$ uname -op
x86_64 GNU/Linux

$ ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.8.3

$ git log --oneline | head -1
fa75309 Update .mailmap

$ make
===--- building phase 0
make -r --no-print-directory -f ghc.mk phase=0 phase_0_builds
make[1]: Nothing to be done for `phase_0_builds'.
===--- building phase 1
make -r --no-print-directory -f ghc.mk phase=1 phase_1_builds
make[1]: Nothing to be done for `phase_1_builds'.
===--- building final phase
make -r --no-print-directory -f ghc.mk phase=final all
"inplace/bin/ghc-stage1" -hisuf hi -osuf  o -hcsuf hc -static  -H64m -O0 -fasm    -this-package-key integ_2MbWUstH60IEgCAexOk3v3 -hide-all-packages -i -ilibraries/integer-gmp2/src/ -ilibraries/integer-gmp2/dist-install/build -ilibraries/integer-gmp2/dist-install/build/autogen -Ilibraries/integer-gmp2/dist-install/build -Ilibraries/integer-gmp2/dist-install/build/autogen -Ilibraries/integer-gmp2/include    -optP-include -optPlibraries/integer-gmp2/dist-install/build/autogen/cabal_macros.h -package-key ghcpr_BE58KUgBe9ELCsPXiJ1Q2r -this-package-key integer-gmp -Wall -XHaskell2010 -O0 -fasm  -no-user-package-db -rtsopts      -odir libraries/integer-gmp2/dist-install/build -hidir libraries/integer-gmp2/dist-install/build -stubdir libraries/integer-gmp2/dist-install/build  -dynamic-too -c libraries/integer-gmp2/src//GHC/Integer/Type.hs -o libraries/integer-gmp2/dist-install/build/GHC/Integer/Type.o -dyno libraries/integer-gmp2/dist-install/build/GHC/Integer/Type.dyn_o
ghc-stage1: panic! (the 'impossible' happened)
  (GHC version 7.9.20141114 for x86_64-unknown-linux):
	Can't use Integer in integer-*

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

make[1]: *** [libraries/integer-gmp2/dist-install/build/GHC/Integer/Type.o] Error 1
make: *** [all] Error 2

Trac metadata

Trac field	Value
Version	7.8.3
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC	hvr
Operating system
Architecture

changed weight to 5

added Tbug Trac import labels

Using BuildFlavour=quick does work.

Note to self: after this is fixed, also check #9302 (closed).

mentioned in commit c45e2e29

closed

changed milestone to %7.10.1

Thanks.

Trac metadata

Trac field	Value
Version	7.8.3 → 7.9
Resolution	Unresolved → ResolvedFixed

added ghc build failure label

added Pnormal label