Bug#1023649: ghc: FTBFS haskell-random powerpc (ghc Segmentation fault)

[John Paul Adrian Glaubitz]

Hi Ilias,

On Thu, 2024-06-13 at 20:50 +0200, John Paul Adrian Glaubitz wrote:
> > Do we still have to build an unregisterised compiler for powerpc
> > or can we switch back to NCG (https://bugs.debian.org/1060196)?
> 
> I have not verified that yet. Please let's stay unregisterised for now
> and have me verify first whether the NGC has been fixed with 9.6.x or
> newer.
> 
> Please let's keep this bug report open and use #1073159 [1] for adding
> the flag --disable-ld-override to EXTRA_INSTALL_CONFIGURE_FLAGS.

GHC 9.6.5 still fails on powerpc with the NGC enabled:

# rts/include/rts/prof/LDV.h
| Run Ghc CompileHs Stage1: rts/HeapStackCheck.cmm => _build/stage1/rts/build/cmm/HeapStackCheck.debug_o
| Run Ghc CompileHs Stage1: rts/PrimOps.cmm => _build/stage1/rts/build/cmm/PrimOps.p_o
| Run Ghc CompileHs Stage1: rts/Updates.cmm => _build/stage1/rts/build/cmm/Updates.thr_p_o
| Run Ghc CompileHs Stage1: rts/Compact.cmm => _build/stage1/rts/build/cmm/Compact.thr_p_o
| Run Ghc CompileHs Stage1: rts/Exception.cmm => _build/stage1/rts/build/cmm/Exception.o
| Run Ghc CompileHs Stage1: rts/PrimOps.cmm => _build/stage1/rts/build/cmm/PrimOps.debug_o
| Run Ghc CompileHs Stage1: rts/StgStartup.cmm => _build/stage1/rts/build/cmm/StgStartup.debug_p_o
| Run Ghc CompileHs Stage1: rts/HeapStackCheck.cmm => _build/stage1/rts/build/cmm/HeapStackCheck.p_o
| Run Ghc CompileHs Stage1: rts/StgStartup.cmm => _build/stage1/rts/build/cmm/StgStartup.thr_debug_p_o
| Run Ghc CompileHs Stage1: rts/StgMiscClosures.cmm => _build/stage1/rts/build/cmm/StgMiscClosures.debug_o
| Run Ghc CompileHs Stage1: rts/StgMiscClosures.cmm => _build/stage1/rts/build/cmm/StgMiscClosures.p_o
| Run Ghc CompileHs Stage1: rts/ContinuationOps.cmm => _build/stage1/rts/build/cmm/ContinuationOps.debug_p_o
| Run Ghc CompileHs Stage1: rts/Updates.cmm => _build/stage1/rts/build/cmm/Updates.debug_p_o
| Run Ghc CompileHs Stage1: rts/StgStartup.cmm => _build/stage1/rts/build/cmm/StgStartup.thr_p_o
| Run Ghc CompileHs Stage1: rts/Apply.cmm => _build/stage1/rts/build/cmm/Apply.o
| Run Ghc CompileHs Stage1: rts/Exception.cmm => _build/stage1/rts/build/cmm/Exception.debug_o
| Run Ghc CompileHs Stage1: rts/Apply.cmm => _build/stage1/rts/build/cmm/Apply.thr_dyn_o
Command line: _build/stage0/bin/ghc -Wall -Wcompat -hisuf debug_p_hi -osuf debug_p_o -hcsuf debug_p_hc -static -prof -DDEBUG -optc-DDEBUG -hide-all-packages -no-user-package-db '-package-env -' '-
package-db _build/stage1/inplace/package.conf.d' '-this-unit-id rts-1.0.2' -i -i/home/glaubitz/ghc-deb-9.6.5-new/ghc-9.6.5/_build/stage1/rts/build -i/home/glaubitz/ghc-deb-9.6.5-new/ghc-
9.6.5/_build/stage1/rts/build/autogen -i/home/glaubitz/ghc-deb-9.6.5-new/ghc-9.6.5/rts -Irts/include -I_build/stage1/rts/build -I_build/stage1/rts/build/include
-I_build/stage1/rts/build/@FFIIncludeDir@ -I_build/stage1/rts/build/@LibdwIncludeDir@ -Irts/include -Irts/@FFIIncludeDir@ -Irts/@LibdwIncludeDir@ -optP-include -
optP_build/stage1/rts/build/autogen/cabal_macros.h -ghcversion-file=rts/include/ghcversion.h -outputdir _build/stage1/rts/build -fdiagnostics-color=always -Wnoncanonical-monad-instances -optc-Wno-
error=inline -optP-Wno-nonportable-include-path -c rts/ContinuationOps.cmm -o _build/stage1/rts/build/cmm/ContinuationOps.debug_p_o -O2 -H32m -this-unit-id rts -XHaskell98 -no-global-package-db -
package-db=/home/glaubitz/ghc-deb-9.6.5-new/ghc-9.6.5/_build/stage1/inplace/package.conf.d -ghcversion-file=rts/include/ghcversion.h -ghcversion-file=rts/include/ghcversion.h -haddock -Irts -
I_build/stage1/rts/build '-DRtsWay="rts_debug_p"' -DFS_NAMESPACE=rts -DCOMPILING_RTS -DPROFILING -Wno-deprecated-flags -Wcpp-undef
===> Command failed with error code: 1
ghc: panic! (the 'impossible' happened)
  GHC version 9.6.5:
        PPC.Ppr.pprInstr: JMP to ForeignLabel
  CallStack (from HasCallStack):
    panic, called at compiler/GHC/CmmToAsm/PPC/Ppr.hs:591:30 in ghc:GHC.CmmToAsm.PPC.Ppr


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

Error when running Shake build system:
  at want, called at src/Main.hs:124:44 in main:Main
* Depends on: binary-dist-dir
  at need, called at src/Rules/BinaryDist.hs:130:9 in main:Rules.BinaryDist
* Depends on: _build/stage1/lib/package.conf.d/rts-1.0.2.conf
  at need, called at src/Rules/Register.hs:134:5 in main:Rules.Register
* Depends on: _build/stage1/rts/build/stamp-rts-1.0.2_debug_p
  at need, called at src/Rules/Library.hs:144:3 in main:Rules.Library
* Depends on: _build/stage1/rts/build/libHSrts-1.0.2_debug_p.a
  at need, called at src/Rules/Library.hs:220:5 in main:Rules.Library
* Depends on: _build/stage1/rts/build/cmm/ContinuationOps.debug_p_o
  at cmd', called at src/Builder.hs:387:23 in main:Builder
  at cmdArgs, called at src/Builder.hs:540:8 in main:Builder
  at cmdArgs, called at src/Builder.hs:564:18 in main:Builder
  at cmdArgs, called at src/Builder.hs:564:18 in main:Builder
  at error, called at src/Builder.hs:609:13 in main:Builder
* Raised the exception:
Command failed

Build failed.

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer
`. `'   Physicist
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913