[tor-bugs] #27389 [Core Tor/Tor]: Appveyor Windows 64-bit builds fail because the compiler is broken

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#27389: Appveyor Windows 64-bit builds fail because the compiler is broken
------------------------------+--------------------------------
     Reporter:  teor          |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: 0.3.5.x-final
    Component:  Core Tor/Tor  |    Version:
     Severity:  Major         |   Keywords:  035-must
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
------------------------------+--------------------------------
 Since about 6 hours ago, all Appveyor 64-bit Windows builds fail the first
 C file they build with:

 {{{
 bash.exe : In file included from ../src/core/or/or.h:16,
 At line:2 char:5
 +     & $commandPath $args 2>&1
 +     ~~~~~~~~~~~~~~~~~~~~~~~~~
     + CategoryInfo          : NotSpecified: (In file
 include...ore/or/or.h:16,:String) [], RemoteException
     + FullyQualifiedErrorId : NativeCommandError

                  from ../src/app/main/ntmain.c:22:
 ../src/lib/cc/torint.h:52:2: error: #error "Seems that your platform
 doesn't use 2's complement arithmetic. Argh."
  #error "Seems that your platform doesn't use 2's complement arithmetic.
 Argh."
   ^~~~~
 In file included from ../src/core/or/or.h:26,
                  from ../src/app/main/ntmain.c:22:
 ../src/lib/cc/compat_compiler.h:28:2: error: #error "It seems your
 platform does not represent NULL as zero. We can't cope."
  #error "It seems your platform does not represent NULL as zero. We can't
 cope."
   ^~~~~
 ../src/lib/cc/compat_compiler.h:32:2: error: #error "It seems your
 platform does not represent 0.0 as zeros. We can't cope."
  #error "It seems your platform does not represent 0.0 as zeros. We can't
 cope."
   ^~~~~
 In file included from ../src/core/or/or.h:16,
                  from ../src/feature/dirauth/dircollate.h:16,
                  from ../src/feature/dirauth/dircollate.c:25:
 ../src/lib/cc/torint.h:52:2: error: #error "Seems that your platform
 doesn't use 2's complement arithmetic. Argh."
  #error "Seems that your platform doesn't use 2's complement arithmetic.
 Argh."
   ^~~~~
 In file included from ../src/core/or/or.h:26,
                  from ../src/feature/dirauth/dircollate.h:16,
                  from ../src/feature/dirauth/dircollate.c:25:
 ../src/lib/cc/compat_compiler.h:28:2: error: #error "It seems your
 platform does not represent NULL as zero. We can't cope."
  #error "It seems your platform does not represent NULL as zero. We can't
 cope."
   ^~~~~
 ../src/lib/cc/compat_compiler.h:32:2: error: #error "It seems your
 platform does not represent 0.0 as zeros. We can't cope."
  #error "It seems your platform does not represent 0.0 as zeros. We can't
 cope."
   ^~~~~
 }}}
 https://ci.appveyor.com/project/teor2345/tor/build/1.0.113/job/ujbvwntcu1pdk2m6#L762

 CC'ing mikeperry, because he's on CI rotation this week.
 Which is weird, because configure seems to succeed.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27389>
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