A fix for bug#4368 '"like" fails in PreparedStatement, crashes

server': the bug occurs when arguments of LIKE function are in 
differentcharacter sets. If these character sets are compatible, 
we create an item-converter. In prepared mode, this item
needs to be created in memory of current prepared statement.

1 files changed, 17 insertions, 0 deletions

diff --git a/mysql-test/t/ps.test b/mysql-test/t/ps.test
index e54bf8076e0..cbc76e02b42 100644
--- a/mysql-test/t/ps.test
+++ b/mysql-test/t/ps.test
@@ -261,3 +261,20 @@ execute `ü`;
 set names default;
 
 
+# 
+# BUG#4368 "select * from t1 where a like ?" crashes server if a is in utf8
+# and ? is in latin1
+# Check that Item converting latin1 to utf8 (for LIKE function) is created
+# in memory of prepared statement.
+#
+
+create table t1 (a varchar(10)) charset=utf8;
+insert into t1 (a) values ('yahoo');
+set character_set_connection=latin1;
+prepare stmt from 'select a from t1 where a like ?';
+set @var='google';
+execute stmt using @var;
+execute stmt using @var;
+deallocate prepare stmt;
+drop table t1;
+