* event-top.c (async_stop_sig) [HAVE_SIGPROCMASK]: Some

gratuitious whitespace changes.
[!HAVE_SIGPROCMASK]: Call sigsetmask if HAVE_SIGSETMASK is defined.
* top.c: Remove redundant logic to define HAVE_SIGSETMASK.
(sigsetmask) Don't define macro.
(stop_sig) [HAVE_SIGPROCMASK]: Add bit of code snatched from
async_stop_sig from event-top.c.
[!HAVE_SIGPROCMASK]: Call sigsetmask if HAVE_SIGSETMASK is
defined.
* configure.in (AC_CHECK_FUNCS): Put functions in alphabetical
order.  Add sigsetmask.
(AC_FUNC_VFORK, AC_FUNC_ALLOCA): Reorder such that they're in
alphabetical order.
* config/xm-aix4.h, config/alpha/xm-alphalinux.h,
config/i386/xm-cygwin.h, config/rs6000/xm-rs6000.h
(HAVE_SIGSETMASK): Remove.
* aclocal.m4, config.in, configure

1 files changed, 9 insertions, 13 deletions

diff --git a/gdb/top.c b/gdb/top.c
index 33a853b..5d644dc 100644
--- a/gdb/top.c
+++ b/gdb/top.c
@@ -178,19 +178,6 @@ static void stop_sig (int);
 #endif
 #endif
 
-/* Some System V have job control but not sigsetmask(). */
-#if !defined (HAVE_SIGSETMASK)
-#if !defined (USG)
-#define HAVE_SIGSETMASK 1
-#else
-#define HAVE_SIGSETMASK 0
-#endif
-#endif
-
-#if 0 == (HAVE_SIGSETMASK)
-#define sigsetmask(n)
-#endif
-
 /* Hooks for alternate command interfaces.  */
 
 /* Called after most modules have been initialized, but before taking users
@@ -922,7 +909,16 @@ stop_sig (int signo)
 {
 #if STOP_SIGNAL == SIGTSTP
   signal (SIGTSTP, SIG_DFL);
+#if HAVE_SIGPROCMASK
+  {
+    sigset_t zero;
+
+    sigemptyset (&zero);
+    sigprocmask (SIG_SETMASK, &zero, 0);
+  }
+#elif HAVE_SIGSETMASK
   sigsetmask (0);
+#endif
   kill (getpid (), SIGTSTP);
   signal (SIGTSTP, stop_sig);
 #else