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-rw-r--r--mysql-test/suite/multi_source/multisource.test9
1 files changed, 9 insertions, 0 deletions
diff --git a/mysql-test/suite/multi_source/multisource.test b/mysql-test/suite/multi_source/multisource.test
index 7a9ee166ec2..4938a0142d1 100644
--- a/mysql-test/suite/multi_source/multisource.test
+++ b/mysql-test/suite/multi_source/multisource.test
@@ -8,6 +8,15 @@
--connect (slave,127.0.0.1,root,,,$SERVER_MYPORT_3)
+# MDEV-3984: crash/read of freed memory when changing master with named connection
+# This fails after adding the new master 'abc', check we do not free twice.
+--error ER_RELAY_LOG_INIT
+change master 'abc' to relay_log_file='';
+# This fails before adding the new master, check that we do free it.
+--error ER_WRONG_ARGUMENTS
+change master 'abc2' to master_host='';
+
+
# Start replication from the first master
--replace_result $SERVER_MYPORT_1 MYPORT_1