[GHC] #14280: Aarch64 build is broken

[GHC]

#14280: Aarch64 build is broken
-------------------------------------+-------------------------------------
           Reporter:  bgamari        |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  high           |         Milestone:  8.4.1
          Component:  Compiler       |           Version:  8.2.1
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:  aarch64        |   Type of failure:  Compile-time
                                     |  crash or panic
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 Trying to bootstrap 7446c7f68bd5addd2f2db0d8d5910fb963869c47 on an aarch64
 (Debian 8, LLVM 5) box results in a reproducibly segfaulting `ghc-stage2`,
 {{{
 (gdb) run
 Starting program: /mnt/ext/arm/ghc/inplace/lib/bin/ghc-stage2
 -B/mnt/ext/arm/ghc/inplace/lib -hisuf dyn_hi -osuf dyn_o -hcsuf dyn_hc
 -fPIC -dynamic -H32m -O -Wall -hide-all-packages -i -iutils/check-ppr/.
 -iutils/check-ppr/dist-install/build -Iutils/check-ppr/dist-install/build
 -iutils/check-ppr/dist-install/build/check-ppr/autogen -Iutils/check-ppr
 /dist-install/build/check-ppr/autogen -optP-include -optPutils/check-ppr
 /dist-install/build/check-ppr/autogen/cabal_macros.h -package-id
 base-4.11.0.0 -package-id bytestring-0.10.8.2 -package-id
 containers-0.5.10.2 -package-id Cabal-2.0.0.2 -package-id
 directory-1.3.1.2 -package-id
 filepath-1.4.1.2 -package-id ghc-8.3 -Wall -XHaskell2010 -no-user-package-
 db -rtsopts -Wnoncanonical-monad-instances -odir utils/check-ppr/dist-
 install/build -hidir utils/check-ppr/dist-install/build -stubdir utils
 /check-ppr/dist-install/build -c utils/check-ppr/./Main.hs -o utils/check-
 ppr/dist-install/build/Main.dyn_o
 [Thread debugging using libthread_db enabled]
 Using host libthread_db library "/lib/aarch64-linux-
 gnu/libthread_db.so.1".
 [New Thread 0x3fafaff200 (LWP 29429)]

 Thread 1 "ghc-stage2" received signal SIGSEGV, Segmentation fault.
 0x00000000005aa360 in stg_IND_STATIC_info ()
 (gdb) bt
 #0  0x00000000005aa360 in stg_IND_STATIC_info ()
 #1  0x0000007fb11b3450 in ccib_info$def () from
 /mnt/ext/arm/ghc/libraries/base/dist-
 install/build/libHSbase-4.11.0.0-ghc8.3.20170926.so
 Backtrace stopped: previous frame identical to this frame (corrupt stack?)
 (gdb)

 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14280>
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