Fix crashing emacs-module tests on MS-Windows

* src/w32fns.c (syms_of_w32fns) <w32-disable-abort-dialog>: New
variable.
(emacs_abort): If w32-disable-abort-dialog is non-nil, abort right
away, without displaying the Abort dialog, which waits for the user.

* test/src/emacs-module-tests.el (module--test-assertion): Run the
inferior Emacs with the w32 abort dialog disabled.  Expect the
status of the aborted Emacs sub-process to be 3 on MS-Windows and
2 on MS-DOS.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/w32fns.c b/src/w32fns.c
index 457599fce0e..bf3c1d5d303 100644
--- a/src/w32fns.c
+++ b/src/w32fns.c
@@ -10708,6 +10708,11 @@ default value t means to add the width of one canonical character of the
 tip frame.  */);
   Vw32_tooltip_extra_pixels = Qt;
 
+  DEFVAR_BOOL ("w32-disable-abort-dialog",
+               w32_disable_abort_dialog,
+               doc: /* Non-nil means don't display the abort dialog when aborting.  */);
+  w32_disable_abort_dialog = 0;
+
 #if 0 /* TODO: Port to W32 */
   defsubr (&Sx_change_window_property);
   defsubr (&Sx_delete_window_property);
@@ -10902,6 +10907,9 @@ w32_backtrace (void **buffer, int limit)
 void
 emacs_abort (void)
 {
+  if (w32_disable_abort_dialog)
+    abort ();
+
   int button;
   button = MessageBox (NULL,
                        "A fatal error has occurred!\n\n"