[GHC] #13707: xmobar crashes with segmentation faults?

[GHC]

#13707: xmobar crashes with segmentation faults?
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        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  infoneeded
        Priority:  highest           |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.2.1-rc2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Emantor):

 Hello,

 I just produced an unstripped version of xmobar, here is the coredump from
 coredumpctl.
 Unfortunately it is bigger than the allowed upload limit, you can download
 it [https://magratgarlick.emantor.de/xmobar_dump.xz here].

 I also built a version with the configure option `--with-debug-info=1`,
 weirdly I could not reproduce the crashes with that binary.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13707#comment:14>
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