ctdb-protocol: Fix marshalling of TDB_DATA

Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>

diff --git a/ctdb/protocol/protocol_types.c b/ctdb/protocol/protocol_types.c
index 868f55ab5567fec4666c8b7714fcba43bfbce4b3..fa11bc2bcc26439d12a128c6f5b9fd255311bee9 100644 (file)
--- a/ctdb/protocol/protocol_types.c
+++ b/ctdb/protocol/protocol_types.c
@@ -2340,7 +2340,9 @@ size_t ctdb_tdb_data_len(TDB_DATA data)
 
 void ctdb_tdb_data_push(TDB_DATA data, uint8_t *buf)
 {
-       memcpy(buf, data.dptr, data.dsize);
+       if (data.dsize > 0) {
+               memcpy(buf, data.dptr, data.dsize);
+       }
 }
 
 int ctdb_tdb_data_pull(uint8_t *buf, size_t buflen, TALLOC_CTX *mem_ctx,