MDEV-26: Global Transaction ID

 - Fix that binlog_gtid_pos() (and hence slave connect) does not work
   correctly in the very first binlog file (due to not logging empty
   Gtid_list_log_event).

 - Remove one instance of the stupid domain_id-0-is-implicit.

 - Rename the confusing Gtid_Pos_Auto in SHOW SLAVE STATUS to Using_Gtid.

 - Fix memory leak.

1 files changed, 5 insertions, 1 deletions

diff --git a/sql/sql_repl.cc b/sql/sql_repl.cc
index 62b7135641d..f4c902c5954 100644
--- a/sql/sql_repl.cc
+++ b/sql/sql_repl.cc
@@ -735,7 +735,7 @@ gtid_find_binlog_file(slave_connection_state *state, char *out_name)
 {
   MEM_ROOT memroot;
   binlog_file_entry *list;
-  Gtid_list_log_event *glev;
+  Gtid_list_log_event *glev= NULL;
   const char *errormsg= NULL;
   IO_CACHE cache;
   File file = (File)-1;
@@ -780,6 +780,8 @@ gtid_find_binlog_file(slave_connection_state *state, char *out_name)
       strmake(out_name, buf, FN_REFLEN);
       goto end;
     }
+    delete glev;
+    glev= NULL;
     list= list->next;
   }
 
@@ -789,6 +791,8 @@ gtid_find_binlog_file(slave_connection_state *state, char *out_name)
     "have been purged.";
 
 end:
+  if (glev)
+    delete glev;
   if (file != (File)-1)
   {
     end_io_cache(&cache);