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MDEV-4017 - GET_LOCK() with negative timeouts has strange behavior

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GET_LOCK() silently accepted negative values and NULL for timeout.
Fixed GET_LOCK() to issue a warning and return NULL in such cases.
This commit is contained in:
Sergey Vojtovich 2015-07-23 12:50:58 +04:00
commit 392df76bc3
6 changed files with 40 additions and 4 deletions
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13
mysql-test/r/func_misc.result
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@ -361,5 +361,18 @@ set optimizer_switch=@optimizer_switch_save;
drop view v_merge, vm;
drop table t1,tv;
#
# MDEV-4017 - GET_LOCK() with negative timeouts has strange behavior
#
SELECT GET_LOCK('ul1', NULL);
GET_LOCK('ul1', NULL)
NULL
Warnings:
Warning 1411 Incorrect timeout value: 'NULL' for function get_lock
SELECT GET_LOCK('ul1', -1);
GET_LOCK('ul1', -1)
NULL
Warnings:
Warning 1411 Incorrect timeout value: '-1' for function get_lock
#
# End of 5.5 tests
#