Merge polly.(none):/home/kaa/src/opt/bug32103/my51-bug26215

into  polly.(none):/home/kaa/src/opt/mysql-5.1-opt

mysql-test/r/select.result

@@ -2827,6 +2827,14 @@ FFFFFFFFFFFFFFFF	7FFFFFFFFFFFFFFF
 FFFFFFFFFFFFFFFF	7FFFFFFFFFFFFFFF
 8FFFFFFFFFFFFFFF	7FFFFFFFFFFFFFFF
 drop table t1;
+CREATE TABLE t1 (c0 int);
+CREATE TABLE t2 (c0 int);
+INSERT INTO t1 VALUES(@@connect_timeout);
+INSERT INTO t2 VALUES(@@connect_timeout);
+SELECT * FROM t1 JOIN t2 ON t1.c0 = t2.c0 WHERE (t1.c0 <=> @@connect_timeout);
+c0	c0
+X	X
+DROP TABLE t1, t2;
 End of 4.1 tests
 CREATE TABLE t1 ( 
 K2C4 varchar(4) character set latin1 collate latin1_bin NOT NULL default '', 

mysql-test/t/select.test

@@ -2361,6 +2361,27 @@ insert into t1 values (0xfffffffffffffffff, 0xfffffffffffffffff),
 select hex(a), hex(b) from t1;
 drop table t1;
 
+#
+# Bug #32103: optimizer crash when join on int and mediumint with variable in 
+#             where clause
+#
+
+CREATE TABLE t1 (c0 int);
+CREATE TABLE t2 (c0 int);
+
+# We need any variable that:
+# 1. has integer type, 
+# 2. can be used with the "@@name" syntax
+# 3. available in every server build
+INSERT INTO t1 VALUES(@@connect_timeout);
+INSERT INTO t2 VALUES(@@connect_timeout);
+
+# We only need to ensure 1 row is returned to validate the results
+--replace_column 1 X 2 X
+SELECT * FROM t1 JOIN t2 ON t1.c0 = t2.c0 WHERE (t1.c0 <=> @@connect_timeout);
+
+DROP TABLE t1, t2;
+
 --echo End of 4.1 tests
 
 #

sql/item.h

@@ -1719,7 +1719,7 @@ public:
   double val_real()
     { DBUG_ASSERT(fixed == 1); return ulonglong2double((ulonglong)value); }
   String *val_str(String*);
-  Item *clone_item() { return new Item_uint(name,max_length); }
+  Item *clone_item() { return new Item_uint(name, value, max_length); }
   int save_in_field(Field *field, bool no_conversions);
   void print(String *str);
   Item_num *neg ();