commit 831422bfaa50cc2ce7e20d530fb148ada9cba64a
author Michal Vasko <mvasko@cesnet.cz> Tue Nov 24 11:20:51 2020 +0100
committer Radek Krejci <rkrejci@cesnet.cz> Thu Nov 26 07:16:03 2020 +0100
tree 338315108ffc3c5beb1db268c8781fa198099c45
parent 54b5028c3a9eab0fda45e85a9fe7d9919dfbcfb4

data tree BUGFIX null pointer access

src/tree_data.c

diff --git a/src/tree_data.c b/src/tree_data.c
index 91d69a9..85261df 100644
--- a/src/tree_data.c
+++ b/src/tree_data.c
@@ -2899,7 +2899,7 @@
         return LY_SUCCESS;
     }
 
-    if (lysc_data_parent((*target)->schema) || lysc_data_parent(source->schema)) {
+    if ((*target && lysc_data_parent((*target)->schema)) || lysc_data_parent(source->schema)) {
         LOGERR(LYD_CTX(source), LY_EINVAL, "Invalid arguments - can merge only 2 top-level subtrees (%s()).", __func__);
         return LY_EINVAL;
     }