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b86a2f03b6
Reset the connection_name to contain a null string, if the pointer points to the same space as that of the system variable default_master_connection. We do this because the system variable may be updated which could free the pointer and create a new one, causing use-after-free for re-execution of prepared statements and stored procedures where the LEX may be reused. This allows connection_name to be set again be to the system variable pointer in the next call of this function (see earlier in this function), after any possible updates to the system variable.
18 lines
516 B
Text
18 lines
516 B
Text
--source include/not_embedded.inc
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PREPARE s_1 FROM 'SHOW RELAYLOG EVENTS';
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/* 1 */ SET default_master_connection='MASTER';
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--error WARN_NO_MASTER_INFO
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/* 1 */ EXECUTE s_1;
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/* 2 */ SET default_master_connection='MASTER';
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--error WARN_NO_MASTER_INFO
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/* 2 */ EXECUTE s_1;
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create procedure p() SHOW RELAYLOG EVENTS;
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/* 1 */ SET default_master_connection='MASTER';
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--error WARN_NO_MASTER_INFO
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/* 1 */ call p;
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/* 2 */ SET default_master_connection='MASTER';
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--error WARN_NO_MASTER_INFO
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/* 2 */ call p;
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drop procedure p;
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