[GHC] #8728: Segmentation fault in Cabal

[GHC]

#8728: Segmentation fault in Cabal
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        Reporter:  heatsink           |            Owner:
            Type:  bug                |           Status:  new
        Priority:  normal             |        Milestone:
       Component:  libraries (other)  |          Version:  7.8.1-rc1
      Resolution:                     |         Keywords:  Cabal
Operating System:  MacOS X            |     Architecture:  x86
 Type of failure:  Runtime crash      |       Difficulty:  Unknown
       Test Case:                     |       Blocked By:
        Blocking:                     |  Related Tickets:
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Comment (by heatsink):

 I am using Mac OS 10.6.8.  I can not find an RC1 binary for this OS.
 There are binaries for Mac OS 10.7 and 10.9.

 The problem appeared when I updated a preexisting repository to get the
 fix for #8180.  Here are the steps as I remember them.

 I ran `./sync-all pull --rebase; make clean; configure
 --prefix=$HOME/env/ghc; make; make install`.  GHC 7.4.1 and Haskell
 platform 2012.2.0.0 were used to bootstrap.  I ran into the bug after
 installing some packages, but the bug seems to depend only on the
 libraries included with GHC.  The bug is produced by adding the install
 path to `PATH`, writing the program to `Setup.hs`, compiling it with `ghc
 --make`, and running `./Setup configure`.

 My local changes to the RTS were `#ifdef`'d out during the test.  I
 haven't tested a pristine copy of the sources.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8728#comment:2>
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