Note: The failure became possible after MDEV-371, without it the key without a length in the table definition is rejected.
CREATE TABLE t1 (b BLOB, UNIQUE(b)) ENGINE=MyISAM;
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REPLACE INTO t1 VALUES (0),(3);
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--error 0,1062
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REPLACE INTO t1 VALUES (0),(3);
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# Cleanup
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DROP TABLE t1;
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bb-10.4-serg 561f0c88
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==16800== Conditional jump or move depends on uninitialised value(s)
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==16800== at 0x1372E5B: mi_rrnd (mi_rrnd.c:40)
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==16800== by 0x13361B9: ha_myisam::rnd_pos(unsigned char*, unsigned char*) (ha_myisam.cc:2010)
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==16800== by 0xBE9F51: handler::ha_rnd_pos(unsigned char*, unsigned char*) (handler.cc:3014)
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==16800== by 0x84AB5E: write_record(THD*, TABLE*, st_copy_info*) (sql_insert.cc:1754)
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==16800== by 0x848DD0: mysql_insert(THD*, TABLE_LIST*, List<Item>&, List<List<Item> >&, List<Item>&, List<Item>&, enum_duplicates, bool) (sql_insert.cc:1067)
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==16800== by 0x894749: mysql_execute_command(THD*) (sql_parse.cc:4791)
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==16800== by 0x8A05C7: mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) (sql_parse.cc:8157)
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==16800== by 0x88BB69: dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) (sql_parse.cc:1829)
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==16800== by 0x88A33D: do_command(THD*) (sql_parse.cc:1358)
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==16800== by 0xA09F42: do_handle_one_connection(CONNECT*) (sql_connect.cc:1399)
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==16800== by 0xA09CB3: handle_one_connection (sql_connect.cc:1302)
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==16800== by 0xF24948: pfs_spawn_thread (pfs.cc:1862)
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==16800== by 0x4E3F493: start_thread (pthread_create.c:333)
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==16800== by 0x6A9A93E: clone (clone.S:97)
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==16800== Conditional jump or move depends on uninitialised value(s)
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==16800== at 0x1358562: _mi_read_rnd_dynamic_record (mi_dynrec.c:1746)
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==16800== by 0x1372F45: mi_rrnd (mi_rrnd.c:59)
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==16800== by 0x13361B9: ha_myisam::rnd_pos(unsigned char*, unsigned char*) (ha_myisam.cc:2010)
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==16800== by 0xBE9F51: handler::ha_rnd_pos(unsigned char*, unsigned char*) (handler.cc:3014)
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==16800== by 0x84AB5E: write_record(THD*, TABLE*, st_copy_info*) (sql_insert.cc:1754)
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==16800== by 0x848DD0: mysql_insert(THD*, TABLE_LIST*, List<Item>&, List<List<Item> >&, List<Item>&, List<Item>&, enum_duplicates, bool) (sql_insert.cc:1067)
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==16800== by 0x894749: mysql_execute_command(THD*) (sql_parse.cc:4791)
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==16800== by 0x8A05C7: mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) (sql_parse.cc:8157)
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==16800== by 0x88BB69: dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) (sql_parse.cc:1829)
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==16800== by 0x88A33D: do_command(THD*) (sql_parse.cc:1358)
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==16800== by 0xA09F42: do_handle_one_connection(CONNECT*) (sql_connect.cc:1399)
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==16800== by 0xA09CB3: handle_one_connection (sql_connect.cc:1302)
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==16800== by 0xF24948: pfs_spawn_thread (pfs.cc:1862)
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==16800== by 0x4E3F493: start_thread (pthread_create.c:333)
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==16800== by 0x6A9A93E: clone (clone.S:97)
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==16800== Conditional jump or move depends on uninitialised value(s)
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==16800== at 0x13585C6: _mi_read_rnd_dynamic_record (mi_dynrec.c:1755)
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==16800== by 0x1372F45: mi_rrnd (mi_rrnd.c:59)
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==16800== by 0x13361B9: ha_myisam::rnd_pos(unsigned char*, unsigned char*) (ha_myisam.cc:2010)
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==16800== by 0xBE9F51: handler::ha_rnd_pos(unsigned char*, unsigned char*) (handler.cc:3014)
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==16800== by 0x84AB5E: write_record(THD*, TABLE*, st_copy_info*) (sql_insert.cc:1754)
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==16800== by 0x848DD0: mysql_insert(THD*, TABLE_LIST*, List<Item>&, List<List<Item> >&, List<Item>&, List<Item>&, enum_duplicates, bool) (sql_insert.cc:1067)
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==16800== by 0x894749: mysql_execute_command(THD*) (sql_parse.cc:4791)
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==16800== by 0x8A05C7: mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) (sql_parse.cc:8157)
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==16800== by 0x88BB69: dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) (sql_parse.cc:1829)
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==16800== by 0x88A33D: do_command(THD*) (sql_parse.cc:1358)
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==16800== by 0xA09F42: do_handle_one_connection(CONNECT*) (sql_connect.cc:1399)
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==16800== by 0xA09CB3: handle_one_connection (sql_connect.cc:1302)
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==16800== by 0xF24948: pfs_spawn_thread (pfs.cc:1862)
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==16800== by 0x4E3F493: start_thread (pthread_create.c:333)
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==16800== by 0x6A9A93E: clone (clone.S:97)
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10.4 main (9bd47835) also fails.
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Bug
Major
MDEV-371 Unique indexes for blobs
