[GHC] #8698: .ctors handling does not work on Windows 64-bit ghci

[GHC]

#8698: .ctors handling does not work on Windows 64-bit ghci
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        Reporter:  awson       |            Owner:  ezyang
            Type:  bug         |           Status:  new
        Priority:  normal      |        Milestone:
       Component:  Compiler    |          Version:  7.8.1-rc1
      Resolution:              |         Keywords:
Operating System:  Windows     |     Architecture:  x86_64 (amd64)
 Type of failure:  GHCi crash  |       Difficulty:  Unknown
       Test Case:              |       Blocked By:
        Blocking:              |  Related Tickets:
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Comment (by thoughtpolice):

 You can set yourself up a 64bit Windows MSYS environment following this if
 you don't have one already:

 https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Windows/MSYS2

 FWIW, me and Herbert also saw this failure. It can be triggered by a
 vanilla perf build, i.e. just clone and:

 {{{
 $ ./boot; ./configure
 $ make
 }}}

 should trigger it while building stage2 libraries.

 Note that for some exceptionally strange reason, me and Herbert could not
 produce these results with `./validate` - you must do a regular perf
 build.

 I have not merged Kyra's patch for #7134 yet - so right now the build
 should still fail, no patches necessary.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8698#comment:6>
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