#14986: CmmCommonBlockElim conflicts with GhcEnableTablesNextToCode=NO -------------------------------------+------------------------------------- Reporter: terrorjack | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Build System | Version: 8.5 Resolution: | Keywords: Operating System: Windows | Architecture: x86_64 Type of failure: Building GHC | (amd64) failed | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Description changed by terrorjack: Old description:
I'm compiling a recent commit (0017a7b618353bf984d701f6d8ee2810a425e5b3), yet ghc always panics when ghc-stage1 is compiling ghc-prim. The error is as follows:
{{{ "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist- install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc- prim -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy- safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist- install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc-prim/./GHC/CString.hs -o libraries/ghc-prim/dist- install/build/GHC/CString.o "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist- install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc- prim -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy- safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist- install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc-prim/./GHC/IntWord64.hs -o libraries/ghc-prim/dist- install/build/GHC/IntWord64.o "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide-all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base /dist-install/build -ilibraries/base/dist-install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-include -optPlibraries/base/dist-install/build/./autogen/cabal_macros.h -package- id ghc-prim-0.5.2.0 -package-id integer-simple-0.1.1.1 -package-id rts -this-unit-id base -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno- trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist- install/build -stubdir libraries/base/dist-install/build -split-objs -c libraries/base/./GHC/Base.hs-boot -o libraries/base/dist- install/build/GHC/Base.o-boot "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide-all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base /dist-install/build -ilibraries/base/dist-install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-include -optPlibraries/base/dist-install/build/./autogen/cabal_macros.h -package- id ghc-prim-0.5.2.0 -package-id integer-simple-0.1.1.1 -package-id rts -this-unit-id base -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno- trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist- install/build -stubdir libraries/base/dist-install/build -split-objs -c libraries/base/./GHC/Real.hs-boot -o libraries/base/dist- install/build/GHC/Real.o-boot "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide-all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base /dist-install/build -ilibraries/base/dist-install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-include -optPlibraries/base/dist-install/build/./autogen/cabal_macros.h -package- id ghc-prim-0.5.2.0 -package-id integer-simple-0.1.1.1 -package-id rts -this-unit-id base -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno- trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist- install/build -stubdir libraries/base/dist-install/build -split-objs -c libraries/base/./GHC/IO.hs-boot -o libraries/base/dist- install/build/GHC/IO.o-boot "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide-all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base /dist-install/build -ilibraries/base/dist-install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-include -optPlibraries/base/dist-install/build/./autogen/cabal_macros.h -package- id ghc-prim-0.5.2.0 -package-id integer-simple-0.1.1.1 -package-id rts -this-unit-id base -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno- trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist- install/build -stubdir libraries/base/dist-install/build -split-objs -c libraries/base/./Data/Semigroup/Internal.hs-boot -o libraries/base/dist- install/build/Data/Semigroup/Internal.o-boot "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist- install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc- prim -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy- safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist- install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc-prim/./GHC/Tuple.hs -o libraries/ghc-prim/dist- install/build/GHC/Tuple.o "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist- install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc- prim -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy- safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist- install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc-prim/./GHC/Magic.hs -o libraries/ghc-prim/dist- install/build/GHC/Magic.o "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist- install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc- prim/dist-install/build/./autogen -Ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc-prim -XHaskell2010 -O2 -no-user- package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist- install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc- prim/./GHC/CString.hs -o libraries/ghc-prim/dist- install/build/GHC/CString.p_o "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist- install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc- prim/dist-install/build/./autogen -Ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc-prim -XHaskell2010 -O2 -no-user- package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist- install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc- prim/./GHC/IntWord64.hs -o libraries/ghc-prim/dist- install/build/GHC/IntWord64.p_o "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide- all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base/dist-install/build -ilibraries/base/dist- install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-include -optPlibraries/base/dist- install/build/./autogen/cabal_macros.h -package-id ghc-prim-0.5.2.0 -package-id integer-simple-0.1.1.1 -package-id rts -this-unit-id base -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist- install/build -stubdir libraries/base/dist-install/build -split-objs -c libraries/base/./GHC/Base.hs-boot -o libraries/base/dist- install/build/GHC/Base.p_o-boot "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide- all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base/dist-install/build -ilibraries/base/dist- install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-include -optPlibraries/base/dist- install/build/./autogen/cabal_macros.h -package-id ghc-prim-0.5.2.0 -package-id integer-simple-0.1.1.1 -package-id rts -this-unit-id base -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist- install/build -stubdir libraries/base/dist-install/build -split-objs -c libraries/base/./GHC/Real.hs-boot -o libraries/base/dist- install/build/GHC/Real.p_o-boot "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide- all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base/dist-install/build -ilibraries/base/dist- install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-include -optPlibraries/base/dist- install/build/./autogen/cabal_macros.h -package-id ghc-prim-0.5.2.0 -package-id integer-simple-0.1.1.1 -package-id rts -this-unit-id base -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist- install/build -stubdir libraries/base/dist-install/build -split-objs -c libraries/base/./GHC/IO.hs-boot -o libraries/base/dist- install/build/GHC/IO.p_o-boot "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide- all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base/dist-install/build -ilibraries/base/dist- install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-include -optPlibraries/base/dist- install/build/./autogen/cabal_macros.h -package-id ghc-prim-0.5.2.0 -package-id integer-simple-0.1.1.1 -package-id rts -this-unit-id base -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist- install/build -stubdir libraries/base/dist-install/build -split-objs -c libraries/base/./Data/Semigroup/Internal.hs-boot -o libraries/base/dist- install/build/Data/Semigroup/Internal.p_o-boot "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist- install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc- prim/dist-install/build/./autogen -Ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc-prim -XHaskell2010 -O2 -no-user- package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist- install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc- prim/./GHC/Tuple.hs -o libraries/ghc-prim/dist- install/build/GHC/Tuple.p_o "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist- install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc- prim/dist-install/build/./autogen -Ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc-prim -XHaskell2010 -O2 -no-user- package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist- install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc- prim/./GHC/Magic.hs -o libraries/ghc-prim/dist- install/build/GHC/Magic.p_o "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist- install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc- prim -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy- safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist- install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc-prim/./GHC/Classes.hs -o libraries/ghc-prim/dist- install/build/GHC/Classes.o "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist- install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc- prim -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy- safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist- install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc-prim/./GHC/Debug.hs -o libraries/ghc-prim/dist- install/build/GHC/Debug.o "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist- install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc- prim -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy- safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist- install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc-prim/dist-install/build/GHC/PrimopWrappers.hs -o libraries/ghc-prim/dist-install/build/GHC/PrimopWrappers.o "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist- install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc- prim/dist-install/build/./autogen -Ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc-prim -XHaskell2010 -O2 -no-user- package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist- install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc- prim/./GHC/Classes.hs -o libraries/ghc-prim/dist- install/build/GHC/Classes.p_o "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist- install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc- prim/dist-install/build/./autogen -Ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc-prim -XHaskell2010 -O2 -no-user- package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist- install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc- prim/./GHC/Debug.hs -o libraries/ghc-prim/dist- install/build/GHC/Debug.p_o "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist- install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc- prim/dist-install/build/./autogen -Ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc-prim -XHaskell2010 -O2 -no-user- package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist- install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc-prim /dist-install/build/GHC/PrimopWrappers.hs -o libraries/ghc-prim/dist- install/build/GHC/PrimopWrappers.p_o ghc-stage1.exe: panic! (the 'impossible' happened) (GHC version 8.5.20180329 for x86_64-unknown-mingw32): Each block should be reachable from only one ProcPoint
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
make[1]: *** [libraries/ghc-prim/ghc.mk:4: libraries/ghc-prim/dist- install/build/GHC/Classes.o] Error 1 make[1]: *** Waiting for unfinished jobs.... ghc-stage1.exe: panic! (the 'impossible' happened) (GHC version 8.5.20180329 for x86_64-unknown-mingw32): Each block should be reachable from only one ProcPoint
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
make[1]: *** [libraries/ghc-prim/ghc.mk:4: libraries/ghc-prim/dist- install/build/GHC/Classes.p_o] Error 1 make: *** [Makefile:127: all] Error 2 }}}
I'm using the following build.mk for those builds here:
{{{ GhcEnableTablesNextToCode = NO INTEGER_LIBRARY = integer-simple SRC_HC_OPTS = -O -H64m GhcStage1HcOpts = -O GhcStage2HcOpts = -O2 GhcLibHcOpts = -O2 BUILD_PROF_LIBS = YES SplitObjs = YES SplitSections = NO BUILD_SPHINX_HTML = YES BUILD_SPHINX_PDF = NO HADDOCK_DOCS = YES EXTRA_HADDOCK_OPTS += --quickjump --hyperlinked-source
}}}
Still working to figure out a minimal combination of the build flags to trigger a similar error. Meanwhile, has anyone seen a similar error for a different commit/platform/build config?
New description: A recent commit d5c4d46a62ce6a0cfa6440344f707136eff18119 which adds a second pass of CmmCommonBlockElim is observed to conflict with GhcEnableTablesNextToCode=NO. When building stage2, ghc will produce an "Each block should be reachable from only one ProcPoint" error and panic. Original description below: I'm compiling a recent commit (0017a7b618353bf984d701f6d8ee2810a425e5b3), yet ghc always panics when ghc-stage1 is compiling ghc-prim. The error is as follows: {{{ "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -Ilibraries /ghc-prim/dist-install/build -ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist- install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc- prim -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy- safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist- install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc-prim/./GHC/CString.hs -o libraries/ghc-prim/dist- install/build/GHC/CString.o "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -Ilibraries /ghc-prim/dist-install/build -ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist- install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc- prim -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy- safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist- install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc-prim/./GHC/IntWord64.hs -o libraries/ghc-prim/dist- install/build/GHC/IntWord64.o "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide-all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base /dist-install/build -ilibraries/base/dist-install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-include -optPlibraries/base/dist-install/build/./autogen/cabal_macros.h -package- id ghc-prim-0.5.2.0 -package-id integer-simple-0.1.1.1 -package-id rts -this-unit-id base -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno- trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist- install/build -stubdir libraries/base/dist-install/build -split-objs -c libraries/base/./GHC/Base.hs-boot -o libraries/base/dist- install/build/GHC/Base.o-boot "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide-all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base /dist-install/build -ilibraries/base/dist-install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-include -optPlibraries/base/dist-install/build/./autogen/cabal_macros.h -package- id ghc-prim-0.5.2.0 -package-id integer-simple-0.1.1.1 -package-id rts -this-unit-id base -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno- trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist- install/build -stubdir libraries/base/dist-install/build -split-objs -c libraries/base/./GHC/Real.hs-boot -o libraries/base/dist- install/build/GHC/Real.o-boot "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide-all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base /dist-install/build -ilibraries/base/dist-install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-include -optPlibraries/base/dist-install/build/./autogen/cabal_macros.h -package- id ghc-prim-0.5.2.0 -package-id integer-simple-0.1.1.1 -package-id rts -this-unit-id base -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno- trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist- install/build -stubdir libraries/base/dist-install/build -split-objs -c libraries/base/./GHC/IO.hs-boot -o libraries/base/dist- install/build/GHC/IO.o-boot "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide-all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base /dist-install/build -ilibraries/base/dist-install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-include -optPlibraries/base/dist-install/build/./autogen/cabal_macros.h -package- id ghc-prim-0.5.2.0 -package-id integer-simple-0.1.1.1 -package-id rts -this-unit-id base -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno- trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist- install/build -stubdir libraries/base/dist-install/build -split-objs -c libraries/base/./Data/Semigroup/Internal.hs-boot -o libraries/base/dist- install/build/Data/Semigroup/Internal.o-boot "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -Ilibraries /ghc-prim/dist-install/build -ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist- install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc- prim -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy- safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist- install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc-prim/./GHC/Tuple.hs -o libraries/ghc-prim/dist- install/build/GHC/Tuple.o "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -Ilibraries /ghc-prim/dist-install/build -ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist- install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc- prim -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy- safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist- install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc-prim/./GHC/Magic.hs -o libraries/ghc-prim/dist- install/build/GHC/Magic.o "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide- all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist- install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim /dist-install/build/./autogen -Ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc-prim -XHaskell2010 -O2 -no-user- package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist- install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc- prim/./GHC/CString.hs -o libraries/ghc-prim/dist- install/build/GHC/CString.p_o "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide- all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist- install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim /dist-install/build/./autogen -Ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc-prim -XHaskell2010 -O2 -no-user- package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist- install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc- prim/./GHC/IntWord64.hs -o libraries/ghc-prim/dist- install/build/GHC/IntWord64.p_o "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide- all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base/dist-install/build -ilibraries/base/dist- install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-include -optPlibraries/base/dist- install/build/./autogen/cabal_macros.h -package-id ghc-prim-0.5.2.0 -package-id integer-simple-0.1.1.1 -package-id rts -this-unit-id base -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist-install/build -stubdir libraries/base/dist-install/build -split-objs -c libraries/base/./GHC/Base.hs-boot -o libraries/base/dist- install/build/GHC/Base.p_o-boot "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide- all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base/dist-install/build -ilibraries/base/dist- install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-include -optPlibraries/base/dist- install/build/./autogen/cabal_macros.h -package-id ghc-prim-0.5.2.0 -package-id integer-simple-0.1.1.1 -package-id rts -this-unit-id base -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist-install/build -stubdir libraries/base/dist-install/build -split-objs -c libraries/base/./GHC/Real.hs-boot -o libraries/base/dist- install/build/GHC/Real.p_o-boot "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide- all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base/dist-install/build -ilibraries/base/dist- install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-include -optPlibraries/base/dist- install/build/./autogen/cabal_macros.h -package-id ghc-prim-0.5.2.0 -package-id integer-simple-0.1.1.1 -package-id rts -this-unit-id base -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist-install/build -stubdir libraries/base/dist-install/build -split-objs -c libraries/base/./GHC/IO.hs-boot -o libraries/base/dist- install/build/GHC/IO.p_o-boot "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id base-4.11.0.0 -hide- all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base/dist-install/build -ilibraries/base/dist- install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -Ilibraries/base/dist-install/build/include -optP-include -optPlibraries/base/dist- install/build/./autogen/cabal_macros.h -package-id ghc-prim-0.5.2.0 -package-id integer-simple-0.1.1.1 -package-id rts -this-unit-id base -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist-install/build -stubdir libraries/base/dist-install/build -split-objs -c libraries/base/./Data/Semigroup/Internal.hs-boot -o libraries/base/dist- install/build/Data/Semigroup/Internal.p_o-boot "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide- all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist- install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim /dist-install/build/./autogen -Ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc-prim -XHaskell2010 -O2 -no-user- package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist- install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc- prim/./GHC/Tuple.hs -o libraries/ghc-prim/dist-install/build/GHC/Tuple.p_o "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide- all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist- install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim /dist-install/build/./autogen -Ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc-prim -XHaskell2010 -O2 -no-user- package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist- install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc- prim/./GHC/Magic.hs -o libraries/ghc-prim/dist-install/build/GHC/Magic.p_o "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -Ilibraries /ghc-prim/dist-install/build -ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist- install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc- prim -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy- safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist- install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc-prim/./GHC/Classes.hs -o libraries/ghc-prim/dist- install/build/GHC/Classes.o "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -Ilibraries /ghc-prim/dist-install/build -ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist- install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc- prim -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy- safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist- install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc-prim/./GHC/Debug.hs -o libraries/ghc-prim/dist- install/build/GHC/Debug.o "inplace/bin/ghc-stage1.exe" -hisuf hi -osuf o -hcsuf hc -static -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build -Ilibraries /ghc-prim/dist-install/build -ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/dist-install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist- install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc- prim -XHaskell2010 -O2 -no-user-package-db -rtsopts -Wno-trustworthy- safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist-install/build -hidir libraries/ghc-prim/dist- install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc-prim/dist-install/build/GHC/PrimopWrappers.hs -o libraries/ghc-prim/dist-install/build/GHC/PrimopWrappers.o "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide- all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist- install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim /dist-install/build/./autogen -Ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc-prim -XHaskell2010 -O2 -no-user- package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist- install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc- prim/./GHC/Classes.hs -o libraries/ghc-prim/dist- install/build/GHC/Classes.p_o "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide- all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist- install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim /dist-install/build/./autogen -Ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc-prim -XHaskell2010 -O2 -no-user- package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist- install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc- prim/./GHC/Debug.hs -o libraries/ghc-prim/dist-install/build/GHC/Debug.p_o "inplace/bin/ghc-stage1.exe" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -O -H64m -Wall -this-unit-id ghc-prim-0.5.2.0 -hide- all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist- install/build -Ilibraries/ghc-prim/dist-install/build -ilibraries/ghc-prim /dist-install/build/./autogen -Ilibraries/ghc-prim/dist- install/build/./autogen -Ilibraries/ghc-prim/. -optP-include -optPlibraries/ghc-prim/dist-install/build/./autogen/cabal_macros.h -package-id rts -this-unit-id ghc-prim -XHaskell2010 -O2 -no-user- package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-prim/dist- install/build -hidir libraries/ghc-prim/dist-install/build -stubdir libraries/ghc-prim/dist-install/build -split-objs -c libraries/ghc-prim /dist-install/build/GHC/PrimopWrappers.hs -o libraries/ghc-prim/dist- install/build/GHC/PrimopWrappers.p_o ghc-stage1.exe: panic! (the 'impossible' happened) (GHC version 8.5.20180329 for x86_64-unknown-mingw32): Each block should be reachable from only one ProcPoint Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug make[1]: *** [libraries/ghc-prim/ghc.mk:4: libraries/ghc-prim/dist- install/build/GHC/Classes.o] Error 1 make[1]: *** Waiting for unfinished jobs.... ghc-stage1.exe: panic! (the 'impossible' happened) (GHC version 8.5.20180329 for x86_64-unknown-mingw32): Each block should be reachable from only one ProcPoint Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug make[1]: *** [libraries/ghc-prim/ghc.mk:4: libraries/ghc-prim/dist- install/build/GHC/Classes.p_o] Error 1 make: *** [Makefile:127: all] Error 2 }}} I'm using the following build.mk for those builds here: {{{ GhcEnableTablesNextToCode = NO INTEGER_LIBRARY = integer-simple SRC_HC_OPTS = -O -H64m GhcStage1HcOpts = -O GhcStage2HcOpts = -O2 GhcLibHcOpts = -O2 BUILD_PROF_LIBS = YES SplitObjs = YES SplitSections = NO BUILD_SPHINX_HTML = YES BUILD_SPHINX_PDF = NO HADDOCK_DOCS = YES EXTRA_HADDOCK_OPTS += --quickjump --hyperlinked-source }}} Still working to figure out a minimal combination of the build flags to trigger a similar error. Meanwhile, has anyone seen a similar error for a different commit/platform/build config? -- -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14986#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler