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-rw-r--r--mysql-test/t/func_misc.test5
1 files changed, 5 insertions, 0 deletions
diff --git a/mysql-test/t/func_misc.test b/mysql-test/t/func_misc.test
index 8b1f0ca108e..916a952fa3a 100644
--- a/mysql-test/t/func_misc.test
+++ b/mysql-test/t/func_misc.test
@@ -391,6 +391,11 @@ set optimizer_switch=@optimizer_switch_save;
drop view v_merge, vm;
drop table t1,tv;
+--echo #
+--echo # MDEV-4017 - GET_LOCK() with negative timeouts has strange behavior
+--echo #
+SELECT GET_LOCK('ul1', NULL);
+SELECT GET_LOCK('ul1', -1);
--echo #
--echo # GET_LOCK, RELEASE_LOCK, IS_USED_LOCK functions test