From 51f357afb9d48cba291bd911acdfded266fc8ec6 Mon Sep 17 00:00:00 2001
From: ceriel <devnull@localhost>
Date: Wed, 4 May 1988 16:16:41 +0000
Subject: [PATCH] small fix in sigvec

---
 mach/sun2/libsys/sigvec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mach/sun2/libsys/sigvec.c b/mach/sun2/libsys/sigvec.c
index 82a2e69d..9b2fb21f 100644
--- a/mach/sun2/libsys/sigvec.c
+++ b/mach/sun2/libsys/sigvec.c
@@ -29,7 +29,7 @@ sigvec(sig,vec,ovec)
 		_sigfunc[sig] = old;
 		return -1;
 	}
-	if (ovec->handler == _sigtramp) {
+	if (ovec && ovec->handler == _sigtramp) {
 		ovec->handler = old;
 	}
 	return 0;