[GHC] #8817: segmentation fault in 7.8 RC1

[GHC]

#8817: segmentation fault in 7.8 RC1
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        Reporter:  hamishmack        |            Owner:
            Type:  bug               |           Status:  new
        Priority:  high              |        Milestone:  7.8.1
       Component:  Compiler          |          Version:  7.8.1-rc1
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  x86_64 (amd64)
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Changes (by hvr):

 * milestone:   => 7.8.1


Old description:

> I get a segmentation fault if I do the following on OS X...
>
> * cabal install cpphs --reinstall --force-reinstall --ghc-
> options=-rtsopts
> * cpphs +RTS -A16384 -RTS /usr/include/stdio.h
>
> Running in gdb the stack shows we are in stg_ap_0_fast and it looks like
> it is trying to dereference a pointer value of 0x5000500050000 that is in
> the rbx register.

New description:

 I get a segmentation fault if I do the following on OS X...

 {{{
 cabal install cpphs --reinstall --force-reinstall --ghc-options=-rtsopts
 cpphs +RTS -A16384 -RTS /usr/include/stdio.h
 }}}

 Running in gdb the stack shows we are in `stg_ap_0_fast` and it looks like
 it is trying to dereference a pointer value of `0x5000500050000` that is
 in the `rbx` register.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8817#comment:2>
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