Statistics: Valgrind warnings in collect_statistics_for_index on a partitioned table with a BIT field

Conditional jump or move depends on uninitialised value(s)

   at 0x4C2AB9D: bcmp (mc_replace_strmem.c:679)

   by 0x7C8E5E: Field_bit::cmp_max(unsigned char const*, unsigned char const*, unsigned int) (field.cc:8374)

   by 0x899FD2: key_rec_cmp (key.cc:593)

   by 0xC9B55D: _downheap (queues.c:305)

   by 0xC9B6F8: queue_fix (queues.c:354)

   by 0xC5E8B2: ha_partition::handle_ordered_index_scan(unsigned char*, bool) (ha_partition.cc:5359)

   by 0xC5D66E: ha_partition::common_first_last(unsigned char*) (ha_partition.cc:4791)

   by 0xC5D56E: ha_partition::index_first(unsigned char*) (ha_partition.cc:4739)

   by 0x5AAD57: handler::ha_index_first(unsigned char*) (sql_class.h:4220)

   by 0x6A1CA6: collect_statistics_for_index(THD*, TABLE*, unsigned int) (sql_statistics.cc:1961)

   by 0x6A2106: collect_statistics_for_table(THD*, TABLE*) (sql_statistics.cc:2120)

   by 0x72F7E3: mysql_admin_table(THD*, TABLE_LIST*, st_ha_check_opt*, char const*, thr_lock_type, bool, bool, unsigned int, int (*)(THD*, TABLE_LIST*, st_ha_check_opt*), int (handler::*)(THD*, st_ha_check_opt*), int (*)(THD*, TABLE_LIST*)) (sql_admin.cc:716)

   by 0x730D84: Analyze_table_statement::execute(THD*) (sql_admin.cc:1079)

   by 0x619CAC: mysql_execute_command(THD*) (sql_parse.cc:4453)

   by 0x61CE4E: mysql_parse(THD*, char*, unsigned int, Parser_state*) (sql_parse.cc:5730)

   by 0x610660: dispatch_command(enum_server_command, THD*, char*, unsigned int) (sql_parse.cc:1055)

branch: maria/maria-5.5-mwl248

revision-id: igor@askmonty.org-20121103033805-k8ljjjflkoerlef4

date: 2012-11-02 20:38:05 -0700

revno: 3569

--source include/have_partition.inc

SET use_stat_tables=PREFERABLY;

CREATE TABLE t1 (

  pk INT PRIMARY KEY, 

  f BIT,

  KEY(f)

) ENGINE=MyISAM PARTITION BY KEY(pk) PARTITIONS 2;

INSERT INTO t1 VALUES (1,1),(2,0),(3,0),(4,1);

ANALYZE TABLE t1;