[GHC] #15260: Xmobar crashes with segmentation fault

[GHC]

#15260: Xmobar crashes with segmentation fault
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        Reporter:  Voronwe        |                Owner:  (none)
            Type:  bug            |               Status:  new
        Priority:  normal         |            Milestone:  8.8.1
       Component:  Compiler       |              Version:  8.5
      Resolution:                 |             Keywords:
Operating System:  Linux          |         Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash  |            Test Case:
      Blocked By:                 |             Blocking:
 Related Tickets:                 |  Differential Rev(s):
       Wiki Page:                 |
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Comment (by dschrempf):

 Just wanted to add that the crash can be reliably induced by moving
 floating windows over the bar.


 {{{
 Jul 16 14:56:18 schwarzbaer systemd-coredump[3993]: Process 3929 (xmobar)
 of user 1000 dumped core.

                                                     Stack trace of thread
 3929:
                                                     #0  0x00007f8c410892b8
 n/a (libHSrts-ghc8.4.3.so)
                                                     #1  0x00007f8c410885dd
 n/a (libHSrts-ghc8.4.3.so)
                                                     #2  0x00007f8c4109f3a4
 n/a (libHSrts-ghc8.4.3.so)
                                                     #3  0x00007f8c410a5c2b
 n/a (libHSrts-ghc8.4.3.so)
                                                     #4  0x00007f8c4108e00d
 n/a (libHSrts-ghc8.4.3.so)
                                                     #5  0x00007f8c4108ed0a
 scheduleWaitThread (libHSrts-ghc8.4.3.so)
                                                     #6  0x00007f8c4109c8dc
 hs_main (libHSrts-ghc8.4.3.so)
                                                     #7  0x000000000058adff
 n/a (xmobar)
                                                     #8  0x00007f8c4078106b
 __libc_start_main (libc.so.6)

 }}}
                                                #9  0x00000000004300ba n/a
 (xmobar)

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15260#comment:7>
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