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23 lines
914 B
23 lines
914 B
5 months ago
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#
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# Bug #21840241 "IMPROPER SE REFERENCE COUNTING IN ATTACHABLE TRANSACTIONS"
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#
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CREATE TABLE t1 (i INT PRIMARY KEY) ENGINE=MyISAM;
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CREATE TABLE t2 (i INT PRIMARY KEY) ENGINE=MyISAM;
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# Decrease Table Cache size and fill it with MyISAM tables.
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SET @save_table_open_cache= @@global.table_open_cache;
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SET @@GLOBAL.table_open_cache=32;
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SELECT * FROM t1;
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i
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SELECT * FROM t2;
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i
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# Usage of non-existent time zone will start attachable transaction
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# which will access time zone tables. This will expel MyISAM tables
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# from the Table Cache and creation of MyISAM specific connection
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# local data. Without proper cleanup at the end of attachable
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# transaction this data was reported as leaked memory by valgrind.
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SELECT CONVERT_TZ('2015-01-01 00:00:00', 'UTC', 'No-such-time-zone');
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CONVERT_TZ('2015-01-01 00:00:00', 'UTC', 'No-such-time-zone')
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NULL
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SET @@global.table_open_cache= @save_table_open_cache;
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DROP TABLES t1, t2;
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