Fyi, this also broke on the nightly PPA builds (which made me notice it): https://launchpadlibrarian.net/178475113/buildlog_ubuntu-precise-i386.ghc-he... Cheers, hvr On 2014-06-25 at 05:42:57 +0200, Builder wrote:

validator1-linux-x86-head (Linux/x86 HEAD (Mateusz Kowalczyk)), build 18

Build failed Details: http://haskell.inf.elte.hu/builders/validator1-linux-x86-head/18.html

git clone | Success create mk/build.mk | Success get subrepos | Success repo versions | Success booting | Success configuring | Success compiling | Failure: Just (ExitFailure 2)

Build failed Details: http://haskell.inf.elte.hu/builders/validator1-linux-x86-head/18.html

[...]

"inplace/bin/ghc-stage1" -hisuf hi -osuf o -hcsuf hc -static -H32m -O -package-name ghc-prim-0.3.1.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim/dist-install/build/autogen -Ilibraries/ghc-prim/dist-install/build -Ilibraries/ghc-prim/dist-install/build/autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/autogen/cabal_macros.h -package rts-1.0 -package-name ghc-prim -XHaskell2010 -O2 -no-user-package-db -rtsopts -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -dynamic-too -c libraries/ghc-prim/dist-install/build/GHC/PrimopWrappers.hs -o libraries/ghc-prim/dist-install/build/GHC/PrimopWrappers.o -dyno libraries/ghc-prim/dist-install/build/GHC/PrimopWrappers.dyn_o ghc-stage1: panic! (the 'impossible' happened) (GHC version 7.9.20140624 for i386-unknown-linux): RegAllocLinear.allocRegsAndSpill: no spill candidates

allocating vreg: VirtualRegI n1Q6 assignment: [(c1PV,InMem 2),(n1Q5,InBoth (RealRegSingle 3) 0),(n1Q6,InMem 1),(n1Q7,InMem 3),(n1Q9,InReg (RealRegSingle 2))] freeRegs: FreeRegs 4282318848 initFreeRegs: FreeRegs 4282318861

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

make[1]: *** [libraries/ghc-prim/dist-install/build/GHC/PrimopWrappers.o] Error 1 libraries/ghc-prim/ghc.mk:4: recipe for target 'libraries/ghc-prim/dist-install/build/GHC/PrimopWrappers.o' failed Makefile:64: recipe for target 'all' failed make: *** [all] Error 2