From 6f0815f2e7aa8ff78ccee9f7d2cd378fae0c51d4 Mon Sep 17 00:00:00 2001
From: Robert Spalek <robert@ucw.cz>
Date: Thu, 27 Apr 2006 18:28:12 +0200
Subject: [PATCH] conf2: fix appending to a dynamic array set to NULL

---
 lib/conf2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/conf2.c b/lib/conf2.c
index ad3839ae..04c20992 100644
--- a/lib/conf2.c
+++ b/lib/conf2.c
@@ -697,7 +697,7 @@ interpret_add_dynamic(struct cf_item *item, int number, byte **pars, int *proces
   void *old_p = *ptr;
   uns size = type_size(item->type, item->u.utype);
   ASSERT(size >= sizeof(uns));
-  int old_nr = * (int*) (old_p - size);
+  int old_nr = old_p ? * (int*) (old_p - size) : 0;
   int taken = MIN(number, ABS(item->number)-old_nr);
   *processed = taken;
   // stretch the dynamic array
-- 
2.39.2