c10 MetaprogrammingTest.FilterMap_onlyCopiesIfNecessary fails on Windows

[malfet]

Per pytorch_windows_vs2019_py36_cuda10.1_test2:

[ RUN      ] MetaprogrammingTest.FilterMap_onlyCopiesIfNecessary
..\c10\test\util\Metaprogramming_test.cpp(176): error: Expected equality of these values:
  2
  result[0].move_count
    Which is: 3
..\c10\test\util\Metaprogramming_test.cpp(178): error: Expected equality of these values:
  1
  result[1].move_count
    Which is: 2
..\c10\test\util\Metaprogramming_test.cpp(180): error: Expected equality of these values:
  2
  result[2].move_count
    Which is: 3
[  FAILED  ] MetaprogrammingTest.FilterMap_onlyCopiesIfNecessary (0 ms)
[ RUN      ] MetaprogrammingTest.FilterMap_onlyMovesIfNecessary_1
..\c10\test\util\Metaprogramming_test.cpp(194): error: Expected equality of these values:
  1
  result[0].move_count
    Which is: 2
..\c10\test\util\Metaprogramming_test.cpp(196): error: Expected equality of these values:
  1
  result[1].move_count
    Which is: 2
[  FAILED  ] MetaprogrammingTest.FilterMap_onlyMovesIfNecessary_1 (0 ms)

cc @peterjc123

[agolynski]

just to make sure: for these issues you reported where tests fail on windows, the failures are limited to windows only?

[malfet]

@agolynski yes, same test is passing if I run it on Linux

[agolynski]

Thanks, @malfet! I presume that is the case with other windows issues you've reported 3 days ago?

[mantaionut]

This is a duplicate of #25161 which is fixed with C++ 17.