[GHC] #12031: GHCi segfaults on Windows when compiling C code using extern-declared variable

[GHC]

#12031: GHCi segfaults on Windows when compiling C code using extern-declared
variable
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        Reporter:  RyanGlScott  |                Owner:
            Type:  bug          |               Status:  new
        Priority:  normal       |            Milestone:
       Component:  GHCi         |              Version:  8.0.1
      Resolution:               |             Keywords:
Operating System:  Windows      |         Architecture:  Unknown/Multiple
 Type of failure:  GHCi crash   |            Test Case:
      Blocked By:               |             Blocking:
 Related Tickets:               |  Differential Rev(s):
       Wiki Page:               |
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Comment (by RyanGlScott):

 I can't reproduce this issue with GHC 7.8.4 or 7.10.2, so it looks like
 the problem surfaced in GHC 7.10.3. Perhaps
 [https://ghc.haskell.org/trac/ghc/ticket/10726 upgrading the MinGW-w64
 toolchain] has something to do with this?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12031#comment:1>
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