1 files changed, 12 insertions, 0 deletions
diff --git a/mysql-test/t/connect_debug.test b/mysql-test/t/connect_debug.test
new file mode 100644
index 00000000000..299b605b2cd
--- /dev/null
+++ b/mysql-test/t/connect_debug.test
@@ -0,0 +1,12 @@
+source include/have_debug.inc;
+set @old_dbug=@@global.debug_dbug;
+
+#
+# use after free if need plugin change and auth aborted
+#
+set global debug_dbug='+d,auth_disconnect';
+create user 'bad' identified by 'worse';
+--error 1
+--exec $MYSQL --default-auth=mysql_old_password --user=bad --password=worse
+set global debug_dbug=@old_dbug;
+drop user bad;