* child_info.h (fork_info): Use different method to alias variable.

(spawn_info): Ditto.
* cxx.cc (__cxa_guard_acquire): New function (needed for gcc 4.x).
(__cxa_guard_release): Ditto.
* devices.in: Make sure stuff is correctly bracketed (for gcc 4.x).
* devices.cc: Regenerate.
* fhandler.h (fhandler_disk_file::fchmod): Avoid left coercion (for gcc 4.x).
* smallprint.c (__rn): Declare as __fastcall since gcc 4.x complains about use
of regparm, for some reason.
* sync.h (sync::init_lock): Remove.
* sync.cc (sync::init_lock): Ditto.

winsup/cygwin/cxx.cc

@@ -43,4 +43,14 @@ __cxa_pure_virtual (void)
 {
   api_fatal ("pure virtual method called");
 }
+
+extern "C" void
+__cxa_guard_acquire ()
+{
+}
+
+extern "C" void
+__cxa_guard_release ()
+{
+}
 #endif