--- tio.c.orig	Mon Apr  6 15:30:53 1992
+++ tio.c	Wed Dec  4 23:59:12 1996
@@ -369,10 +369,20 @@
 #if !MSDOS && !TOS
 # if BSD || COHERENT
 static jmp_buf env_timeout;
-static int dummy()
+static 
+#  if (BSD >= 199306)
+void
+#  else
+int 
+#  endif
+dummy()
 {
 	longjmp(env_timeout, 1);
+#  if (BSD >= 199306)
+	return;
+#  else
 	return 0;
+#  endif
 }
 # else 
 static int dummy()