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

[GHC]

#13707: xmobar crashes with segmentation faults?
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        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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Description changed by bgamari:

@@ -3,0 +3,1 @@
+
@@ -7,1 +8,3 @@
-  or:
+
+ or:
+

New description:

 Markus Trippelsdorf on `ghc-devs` reports that 8.2.1-rc2 produces crashing
 `xmobar` executables.

 {{{
 Program received signal SIGSEGV, Segmentation fault.
  0x0000000000873aa8 in ghczmprim_GHCziClasses_eqChar_info ()
 }}}

 or:

 {{{
  Program received signal SIGSEGV, Segmentation fault.
  0x0000000000873f98 in ghczmprim_GHCziClasses_zdfEqModulezuzdszdczeze_info
 ()
  (gdb) bt
  #0  0x0000000000873f98 in
 ghczmprim_GHCziClasses_zdfEqModulezuzdszdczeze_info ()
  #1  0x0000000000000000 in ?? ()
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13707#comment:2>
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