$NetBSD: patch-af,v 1.1.1.1 2000/08/29 10:09:44 jdc Exp $

--- robot.c.dist	Tue Mar 22 11:06:17 1994
+++ robot.c	Fri Jan  7 11:38:30 2000
@@ -97,7 +97,7 @@
  #ifdef RS6000 /* ibm rs/6000 */
    sigemptyset(&vec.sa_mask);
  #else
-  vec.sa_mask = 0;
+   (void)sigprocmask (SIG_SETMASK, 0, NULL);
  #endif
   vec.sa_flags = 0;
   if ( sigaction(SIGIO, &vec, (struct sigaction *) 0) == -1)