Wrong result (extra row) and valgrind warnings in Item_maxmin_subselect::any_value on 2nd execution of PS with SELECT subquery

EXECUTE stmt;

( SELECT MIN(a) FROM t1 )

1

EXECUTE stmt;

( SELECT MIN(a) FROM t1 )

1

1

==8635== Invalid read of size 1

==8635==    at 0x5DF3D0: Item_maxmin_subselect::any_value() (item_subselect.h:321)

==8635==    by 0x5CA2E2: Item_func_not_all::empty_underlying_subquery() (item_cmpfunc.cc:378)

==8635==    by 0x5CA23D: Item_func_not_all::val_int() (item_cmpfunc.cc:367)

==8635==    by 0x730A5A: evaluate_join_record(JOIN*, st_join_table*, int) (sql_select.cc:16251)

==8635==    by 0x73064B: sub_select(JOIN*, st_join_table*, bool) (sql_select.cc:16155)

==8635==    by 0x72FE28: do_select(JOIN*, List<Item>*, st_table*, Procedure*) (sql_select.cc:15816)

==8635==    by 0x70FC2F: JOIN::exec() (sql_select.cc:2779)

==8635==    by 0x7104BA: mysql_select(THD*, Item***, TABLE_LIST*, unsigned int, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) (sql_select.cc:3000)

==8635==    by 0x706EC8: handle_select(THD*, st_lex*, select_result*, unsigned long) (sql_select.cc:288)

==8635==    by 0x69308D: execute_sqlcom_select(THD*, TABLE_LIST*) (sql_parse.cc:5172)

==8635==    by 0x689E55: mysql_execute_command(THD*) (sql_parse.cc:2305)

==8635==    by 0x76736E: Prepared_statement::execute(String*, bool) (sql_prepare.cc:3758)

==8635==    by 0x766566: Prepared_statement::execute_loop(String*, bool, unsigned char*, unsigned char*) (sql_prepare.cc:3439)

==8635==    by 0x76499E: mysql_sql_stmt_execute(THD*) (sql_prepare.cc:2664)

==8635==    by 0x689E86: mysql_execute_command(THD*) (sql_parse.cc:2314)

==8635==    by 0x695B17: mysql_parse(THD*, char*, unsigned int, char const**) (sql_parse.cc:6173)

==8635==  Address 0xf854cc9 is 2,105 bytes inside a block of size 8,168 free'd

==8635==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)

==8635==    by 0xB7609A: _myfree (safemalloc.c:337)

==8635==    by 0xB752F8: free_root (my_alloc.c:366)

==8635==    by 0x688A99: dispatch_command(enum_server_command, THD*, char*, unsigned int) (sql_parse.cc:1661)

==8635==    by 0x6867E3: do_command(THD*) (sql_parse.cc:923)

==8635==    by 0x68367D: handle_one_connection (sql_connect.cc:1231)

==8635==    by 0x548DE99: start_thread (pthread_create.c:308)

==8635==    by 0x5F9ACBC: clone (clone.S:112)

bzr version-info

revision-id: igor@askmonty.org-20131004165107-0hdknrn9111ojupx

revno: 3701

branch-nick: 5.3

CREATE TABLE t1 (a INT) ENGINE=MyISAM;

INSERT INTO t1 VALUES (1),(2);

CREATE TABLE t2 (b INT NOT NULL) ENGINE=MyISAM;

INSERT INTO t2 VALUES (0),(8);

PREPARE stmt FROM '

 SELECT ( SELECT MIN(a) FROM t1 ) FROM t2 AS outer_t2 

   WHERE outer_t2.b >= ALL ( 

     SELECT t2_alias2.b FROM t2 AS t2_alias1 LEFT JOIN t2 AS t2_alias2 ON ( t2_alias2.b = t2_alias1.b ) 

     WHERE t2_alias1.b <= t2_alias2.b 

  )

';

EXECUTE stmt;

EXECUTE stmt;