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Bug #52629: memory leak from sys_var_thd_dbug in binlog.binlog_write_error

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When re-setting (SET GLOBAL debug='') the GLOBAL debug settings the 
server was not freeing the data elements from the top (initial) frame 
before setting them to 0 without freeing the underlying memory. As these 
are global settings there's a chance that something is there already.
Fixed by :
1. making sure the allocated data are cleaned up before re-setting them
while parsing a debug string
2. making sure the stuff allocated in the global settings is freed on 
shutdown.
This commit is contained in:
Georgi Kodinov
2010-04-16 10:30:53 +03:00
parent 8fa9a5861b
commit 16fadb10b5
3 changed files with 36 additions and 0 deletions
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13
mysql-test/t/variables_debug.test
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@ -10,3 +10,16 @@ set debug= '+P';
select @@debug;
set debug= '-P';
select @@debug;
--echo #
--echo # Bug #52629: memory leak from sys_var_thd_dbug in
--echo # binlog.binlog_write_error
--echo #
SET GLOBAL debug='d,injecting_fault_writing';
SELECT @@global.debug;
SET GLOBAL debug='';
SELECT @@global.debug;
--echo End of 5.1 tests