Use the real vfork under Cygwin

* s/cygwin.h: The vfork the #define in cygwin.h was protecting
against is gone.  It's better to use vfork now so that when Cygwin
gains a new, working vfork, we use it automatically.

Fixes: debbugs:10398

2 files changed, 6 insertions, 4 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 9fecec34870..a55189fb3c3 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,9 @@
+2012-04-11  Daniel Colascione  <dancol@dancol.org>
+
+        * s/cygwin.h: The vfork the #define in cygwin.h was protecting
+        against is gone.  It's better to use vfork now so that when Cygwin
+        gains a new, working vfork, we use it automatically (bug#10398).
+
 2012-04-11  Stefan Monnier  <monnier@iro.umontreal.ca>
 
         * window.c (save_window_save): Obey window-point-insertion-type.
diff --git a/src/s/cygwin.h b/src/s/cygwin.h
index 9a371829eaa..70d64a50c4e 100644
--- a/src/s/cygwin.h
+++ b/src/s/cygwin.h
@@ -81,10 +81,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #define HAVE_SOCKETS
 
-/* vfork() interacts badly with setsid(), causing ptys to fail to
-   change their controlling terminal */
-#define vfork fork
-
 /* This should work (at least when compiling with gcc).  But I have no way
    or intention to verify or even test it.  If you encounter a problem with
    it, feel free to change this setting, but please add a comment here about