There is a segmentation fault on ms-windows when running threads tests :

$ HOME=/nonexistent EMACSLOADPATH= LC_ALL=C
EMACS_TEST_DIRECTORY=/d/Source/emacs/emacs/test "../src/emacs" -batch
--no-site-file --no-site-lisp -L ";../../emacs/test" -l ert -l
src/thread-tests.el --eval "(ert-run-tests-batch-and-exit (quote (not (tag
:expensive-test))))"
Running 28 tests (2017-10-09 21:45:59+0200)
   passed   1/28  thread-errors
   passed   2/28  thread-signal-early
   passed   3/28  thread-sticky-point
   passed   4/28  threads-alive
   passed   5/28  threads-all-threads
   passed   6/28  threads-basic
   passed   7/28  threads-condvar-mutex
   passed   8/28  threads-condvar-name
   passed   9/28  threads-condvar-name-2
   passed  10/28  threads-condvar-type
   passed  11/28  threads-condvar-wait
   passed  12/28  threads-condvarp
   passed  13/28  threads-condvarp-2
   passed  14/28  threads-io-switch
   passed  15/28  threads-is-one
   passed  16/28  threads-join
   passed  17/28  threads-join-self
   passed  18/28  threads-let-binding
Segmentation fault

This is with the latest emacs-26 sources.

Fabrice