From bff1462c0b67f94207f2cf5897b3776bad121de4 Mon Sep 17 00:00:00 2001
From: Bill Stephens <william.stephens@megaport.com>
Date: Wed, 2 Aug 2023 09:15:48 -0500
Subject: [PATCH] data: fix merge operation

lyd_merge_* functions may modify the passed dnode pointer. Make sure to
update the self.cdata pointer after the operation.

Fixes: #49
Signed-off-by: Bill Stephens <william.stephens@megaport.com>
---
 libyang/data.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libyang/data.py b/libyang/data.py
index a8c0ed92..69649eba 100644
--- a/libyang/data.py
+++ b/libyang/data.py
@@ -552,6 +552,8 @@ def merge(
         if ret != lib.LY_SUCCESS:
             raise self.context.error("merge failed")
 
+        self.cdata = node_p[0]
+
     def iter_tree(self) -> Iterator["DNode"]:
         n = next_n = self.cdata
         while n != ffi.NULL: