From f8af490a19f8490035f2c1dacfde14f9794afcac Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Thu, 9 Jan 1992 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1992-01-09

---
 port/devwren.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/port/devwren.c b/port/devwren.c
index ae7f3ab1d6743015c004c77dd1963313da5c2ec8..1c684776b5f73c0817e1c9c7484974aa159a4074 100644
--- a/port/devwren.c
+++ b/port/devwren.c
@@ -298,7 +298,7 @@ wrenpart(int dev)
 	 *  parse partition table.
 	 */
 	n = getfields(rawpart, line, Npart+1, '\n');
-	if(strncmp(line[0], MAGIC, sizeof(MAGIC)-1) == 0){
+	if(n > 0 && strncmp(line[0], MAGIC, sizeof(MAGIC)-1) == 0){
 		for(i = 1; i < n; i++){
 			pp++;
 			if(getfields(line[i], field, 3, ' ') != 3){