From dc6f9f033a351714da8d1a7421eeb0d4848e5925 Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Thu, 12 Oct 2006 03:18:22 +0000
Subject: avoid broken print (Gabriel Diaz)

---
 src/cmd/mk/rule.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/cmd/mk')

diff --git a/src/cmd/mk/rule.c b/src/cmd/mk/rule.c
index 439d6114..30728197 100644
--- a/src/cmd/mk/rule.c
+++ b/src/cmd/mk/rule.c
@@ -74,6 +74,8 @@ addrule(char *head, Word *tail, char *body, Word *ahead, int attr, int hline, ch
 void
 dumpr(char *s, Rule *r)
 {
+	if(r == nil)
+		return;
 	Bprint(&bout, "%s: start=%ld shelltype=%s shellcmd=%s\n", 
 		s, r, r->shellt->name, wtos(r->shellcmd, ' '));
 	for(; r; r = r->next){
-- 
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