bug#47142

merging patches prepared for 5.0 to 5.1-bt. That caused a few changes in the test file

mysql-test/suite/rpl/t/rpl_stm_until.test

@@ -161,4 +161,39 @@ connection slave;
 start slave;
 sync_with_master;
 
+ # Bug #47142  	"slave start until" stops 1 event too late in 4.1 to 5.0 replication
+#
+# testing fixes that refine the start position of prior-5.0 master's event
+# and by that provide correct execution of 
+# START SLAVE UNTIL ... master_log_pos= x;
+# Keep the test at the end of the file because it manipulates with binlog files 
+# to substitute the genuine one with a prepared on 4.1 server.
+#
+
+--source include/master-slave-reset.inc
+
+connection master;
+drop table if exists t1; # there is create table t1 in bug47142_master-bin.000001
+flush logs;
+let $MYSQLD_DATADIR= `select @@datadir`;
+--remove_file $MYSQLD_DATADIR/master-bin.000001
+--copy_file $MYSQL_TEST_DIR/std_data/bug47142_master-bin.000001 $MYSQLD_DATADIR/master-bin.000001
+
+connection slave;
+stop slave;
+reset slave;
+start slave until master_log_file='master-bin.000001', master_log_pos=294 /* to stop right before DROP */;
+--source include/wait_for_slave_sql_to_stop.inc
+
+show tables /* t1 must exist */;
+
+# clean-up of Bug #47142 testing
+
+drop table t1; # drop on slave only, master does not have t1. 
+stop slave;
+reset slave;
+
+connection master;
+reset master;
+
 # End of tests