From 286d83010e22b1b11f8125f4b4dfe0a33959d93e Mon Sep 17 00:00:00 2001
From: Thomas Gschwantner <tharre3@gmail.com>
Date: Wed, 11 Dec 2019 04:08:10 +0100
Subject: radix-trie: fix add() when no poolnodes exist

---
 radix-trie.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/radix-trie.c b/radix-trie.c
index 3cb1e91..678f3be 100644
--- a/radix-trie.c
+++ b/radix-trie.c
@@ -223,6 +223,11 @@ static struct radix_node *add(struct radix_node **trie, uint8_t bits,
 	}
 
 	if (!*trie) {
+		if (type & RNODE_IS_LEAF) {
+			errno = ENOENT;
+			return NULL;
+		}
+
 		*trie = new_node(key, cidr, bits);
 		(*trie)->flags = type;
 		return *trie;
-- 
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