SET @old_debug = @@GLOBAL.debug;
set debug_dbug= 'T';
select @@debug;
@@debug
T
set debug_dbug= '+P';
select @@debug;
@@debug
P:T
set debug_dbug= '-P';
select @@debug;
@@debug
T
SELECT @@session.debug, @@global.debug;
@@session.debug	@@global.debug
T	
SET SESSION debug_dbug= '';
SELECT @@session.debug, @@global.debug;
@@session.debug	@@global.debug
	
#
# Bug #52629: memory leak from sys_var_thd_dbug in 
#  binlog.binlog_write_error
#
SET GLOBAL debug_dbug='d,injecting_fault_writing';
SELECT @@global.debug;
@@global.debug
d,injecting_fault_writing
SET GLOBAL debug_dbug='';
SELECT @@global.debug;
@@global.debug

SET GLOBAL debug_dbug=@old_debug;
#
# Bug #56709: Memory leaks at running the 5.1 test suite
# 
SET @old_local_debug = @@debug;
SET @@debug_dbug='d,foo';
SELECT @@debug;
@@debug
d,foo
SET @@debug_dbug='';
SELECT @@debug;
@@debug

SET @@debug_dbug= @old_local_debug;
End of 5.1 tests
#
# Bug#46165 server crash in dbug
#
SET @old_globaldebug = @@global.debug;
SET @old_sessiondebug= @@session.debug;
# Test 1 - Bug test case, single connection
SET GLOBAL  debug_dbug= '+O,MYSQL_TMP_DIR/bug46165.1.trace';
SET SESSION debug_dbug= '-d:-t:-i';
SET GLOBAL  debug_dbug= '';
SET SESSION debug_dbug= '';
# Test 2 - Bug test case, two connections
# Connection default
SET GLOBAL  debug_dbug= '+O,MYSQL_TMP_DIR/bug46165.2.trace';
SET SESSION debug_dbug= '-d:-t:-i';
# Connection con1
SET GLOBAL  debug_dbug= '';
# Connection default
SET SESSION debug_dbug= '';
# Connection con1
# Connection default
SET GLOBAL  debug_dbug= '';
# Test 3 - Active session trace file on disconnect
# Connection con1
SET GLOBAL  debug_dbug= '+O,MYSQL_TMP_DIR/bug46165.3.trace';
SELECT @@global.debug_dbug, @@session.debug_dbug;
@@global.debug_dbug	@@session.debug_dbug
O,MYSQL_TMP_DIR/bug46165.3.trace	O,MYSQL_TMP_DIR/bug46165.3.trace
SET SESSION debug_dbug= '+T';
SELECT @@global.debug_dbug, @@session.debug_dbug;
@@global.debug_dbug	@@session.debug_dbug
O,MYSQL_TMP_DIR/bug46165.3.trace	O,MYSQL_TMP_DIR/bug46165.3.trace:T
SET GLOBAL  debug_dbug= '';
SELECT @@global.debug_dbug, @@session.debug_dbug;
@@global.debug_dbug	@@session.debug_dbug
	O,MYSQL_TMP_DIR/bug46165.3.trace:T
# Test 4 - Active session trace file on two connections
# Connection default
SET GLOBAL  debug_dbug= '+O,MYSQL_TMP_DIR/bug46165.4.trace';
SET SESSION debug_dbug= '-d:-t:-i';
# Connection con1
SET SESSION debug_dbug= '-d:-t:-i';
SET GLOBAL  debug_dbug= '';
SET SESSION debug_dbug= '';
# Connection default
SET SESSION debug_dbug= '';
# Connection con1
# Connection default
# Test 5 - Different trace files
SET SESSION debug_dbug= '+O,MYSQL_TMP_DIR/bug46165.5.trace';
SET SESSION debug_dbug= '+O,MYSQL_TMP_DIR/bug46165.6.trace';
SET SESSION debug_dbug= '-O';
SET GLOBAL  debug_dbug= @old_globaldebug;
SET SESSION debug_dbug= @old_sessiondebug;
