From e7a3e415ba0ca8daf22fecb235577e87d637864c Mon Sep 17 00:00:00 2001
From: shikokuchuo <53399081+shikokuchuo@users.noreply.github.com>
Date: Sun, 5 Feb 2023 22:54:04 +0000
Subject: Update idhash.c (#1638)

Fix for UBSAN error. As `id_reg_map` is initialised as NULL and passing NULL to `memcpy()` is undefined. Should make no difference to compiled code. Purely to appease the automated checks I have to deal with on my side. Thanks!
---
 src/core/idhash.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/core')

diff --git a/src/core/idhash.c b/src/core/idhash.c
index 9eb959d6..c56c8191 100644
--- a/src/core/idhash.c
+++ b/src/core/idhash.c
@@ -129,7 +129,8 @@ id_map_register(nni_id_map *m)
 			return (NNG_ENOMEM);
 		}
 		id_reg_len = len;
-		memcpy(mr, id_reg_map, id_reg_num * sizeof(nni_id_map *));
+		if (id_reg_map != NULL)
+			memcpy(mr, id_reg_map, id_reg_num * sizeof(nni_id_map *));
 		id_reg_map = mr;
 	}
 	id_reg_map[id_reg_num++] = m;
-- 
cgit v1.2.3-70-g09d2