[GHC] #9920: Segfault in arm binary with llvm 3.5

[GHC]

#9920: Segfault in arm binary with llvm 3.5
-------------------------------------+------------------------------
        Reporter:  erikd             |                Owner:  erikd
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  7.10.2
       Component:  Compiler          |              Version:  7.10.1
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:  arm
 Type of failure:  Runtime crash     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by andrewufrank):

 i installed ghc 7.10.3 from jessie-backports (together with the
 corresponding LLVM 1:3.5.2.3~bpo8+2)
 and get for the minimal main = putStrLn "hello" program the error message
 {{{testthree: schedule: re-entered unsafely.
    Perhaps a 'foreign import unsafe' should be 'safe'?
 }}

 i am not certain if this is related: cabal install for the same minimal
 program (with a minimal cabal file) hangs. cabal install -v gives

 {{{
 /home/frank/.cabal/setup-exe-cache/setup-Simple-Cabal-1.22.5.0-arm-linux-
 ghc-7.10.3
 configure --verbose=2 --ghc --prefix=/home/frank/.cabal
 --bindir=/home/frank/.cabal/bin --libdir=/home/frank/.cabal/lib
 --libsubdir=arm-linux-ghc-7.10.3/testthree-0.0.6-3AgAf9bDkWJGZdbGLvO875
 --libexecdir=/home/frank/.cabal/libexec --datadir=/home/frank/.cabal/share
 --datasubdir=arm-linux-ghc-7.10.3/testthree-0.0.6
 --docdir=/home/frank/.cabal/share/doc/arm-linux-ghc-7.10.3/testthree-0.0.6
 --htmldir=/home/frank/.cabal/share/doc/arm-linux-
 ghc-7.10.3/testthree-0.0.6/html
 --haddockdir=/home/frank/.cabal/share/doc/arm-linux-
 ghc-7.10.3/testthree-0.0.6/html
 --sysconfdir=/home/frank/.cabal/etc --user
 --extra-prog-path=/home/frank/.cabal/bin
 --dependency=base=base-4.8.2.0-2f1f71a7fcf013cd47fd21f489064f9a
 --disable-tests --exact-configuration --disable-benchmarks
 Redirecting build log to {handle:
 /home/frank/.cabal/logs/testthree-0.0.6.log}
 }}}
 any comment how this can be fixed?
 thank you - a running 7.10.3 for armhf is a great achievement!

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9920#comment:21>
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