diff --git a/c/unix/event.c b/c/unix/event.c
index 4042487..f445b4a 100644
--- a/c/unix/event.c
+++ b/c/unix/event.c
@@ -30,6 +30,8 @@ static void     when_sigpipe_interrupt();
 static void     when_scsh_interrupt();
 /* JMG: for scsh */
 static long interrupt_count[32];
+static int s48_os_signal_pending(void);
+static int s48_os_signal_happend(void);
 
 
 bool		s48_setcatcher(int signum, void (*catcher)(int));
@@ -39,6 +41,7 @@ void		s48_start_alarm_interrupts(void);
 void
 s48_sysdep_init(void)
 {
+  int i;
   if (!s48_setcatcher(SIGINT, when_keyboard_interrupt)
       || !s48_setcatcher(SIGALRM, when_alarm_interrupt)
       || !s48_setcatcher(SIGPIPE, when_sigpipe_interrupt)) {
@@ -47,6 +50,9 @@ s48_sysdep_init(void)
 	    errno);
     exit(1);
   }
+  for (i = 0; i < max_sig; i++)
+    interrupt_count[i] = 0;
+
 
   /* JMG: for scsh */
   s48_setcatcher(SIGCHLD,   when_scsh_interrupt);