==19269== Thread 4:
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==19269== Use of uninitialised value of size 8
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==19269== at 0xD35BEB: my_strnxfrm_simple (ctype-simple.c:86)
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==19269== by 0x7CD8EC: Field_str::middle_point_pos(Field*, Field*) (field.cc:6206)
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==19269== by 0x6AAAC3: get_column_range_cardinality(Field*, st_key_range*, st_key_range*) (sql_statistics.cc:3403)
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==19269== by 0x8F69C4: records_in_column_ranges(PARAM*, unsigned int, SEL_ARG*) (opt_range.cc:3306)
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==19269== by 0x8F6D50: calculate_cond_selectivity_for_table(THD*, TABLE*, Item*) (opt_range.cc:3385)
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==19269== by 0x65087E: make_join_statistics(JOIN*, List<TABLE_LIST>&, Item*, st_dynamic_array*) (sql_select.cc:3839)
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==19269== by 0x647A3C: JOIN::optimize_inner() (sql_select.cc:1306)
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==19269== by 0x6469E7: JOIN::optimize() (sql_select.cc:1008)
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==19269== by 0x64E69C: 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:3220)
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==19269== by 0x644E52: handle_select(THD*, LEX*, select_result*, unsigned long) (sql_select.cc:376)
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==19269== by 0x61C303: execute_sqlcom_select(THD*, TABLE_LIST*) (sql_parse.cc:4797)
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==19269== by 0x614903: mysql_execute_command(THD*) (sql_parse.cc:2266)
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==19269== by 0x61EBA5: mysql_parse(THD*, char*, unsigned int, Parser_state*) (sql_parse.cc:5920)
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==19269== by 0x611C27: dispatch_command(enum_server_command, THD*, char*, unsigned int) (sql_parse.cc:1091)
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==19269== by 0x610E55: do_command(THD*) (sql_parse.cc:810)
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==19269== by 0x729CC7: do_handle_one_connection(THD*) (sql_connect.cc:1266)
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==19269== Invalid read of size 1
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==19269== at 0xD35BE1: my_strnxfrm_simple (ctype-simple.c:86)
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==19269== by 0x7CDA62: Field_str::middle_point_pos(Field*, Field*) (field.cc:6212)
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==19269== by 0x6AAAC3: get_column_range_cardinality(Field*, st_key_range*, st_key_range*) (sql_statistics.cc:3403)
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==19269== by 0x8F69C4: records_in_column_ranges(PARAM*, unsigned int, SEL_ARG*) (opt_range.cc:3306)
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==19269== by 0x8F6D50: calculate_cond_selectivity_for_table(THD*, TABLE*, Item*) (opt_range.cc:3385)
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==19269== by 0x65087E: make_join_statistics(JOIN*, List<TABLE_LIST>&, Item*, st_dynamic_array*) (sql_select.cc:3839)
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==19269== by 0x647A3C: JOIN::optimize_inner() (sql_select.cc:1306)
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==19269== by 0x6469E7: JOIN::optimize() (sql_select.cc:1008)
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==19269== by 0x64E69C: 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:3220)
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==19269== by 0x644E52: handle_select(THD*, LEX*, select_result*, unsigned long) (sql_select.cc:376)
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==19269== by 0x61C303: execute_sqlcom_select(THD*, TABLE_LIST*) (sql_parse.cc:4797)
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==19269== by 0x614903: mysql_execute_command(THD*) (sql_parse.cc:2266)
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==19269== by 0x61EBA5: mysql_parse(THD*, char*, unsigned int, Parser_state*) (sql_parse.cc:5920)
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==19269== by 0x611C27: dispatch_command(enum_server_command, THD*, char*, unsigned int) (sql_parse.cc:1091)
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==19269== by 0x610E55: do_command(THD*) (sql_parse.cc:810)
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==19269== by 0x729CC7: do_handle_one_connection(THD*) (sql_connect.cc:1266)
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==19269== Address 0x1194efc0 is 0 bytes after a block of size 48 alloc'd
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==19269== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
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==19269== by 0xCFFFCE: my_malloc (my_malloc.c:99)
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==19269== by 0xCF0E84: alloc_root (my_alloc.c:180)
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==19269== by 0x6A7319: create_min_max_statistical_fields_for_table_share(THD*, TABLE_SHARE*) (sql_statistics.cc:1721)
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==19269== by 0x6A7BC0: alloc_statistics_for_table_share(THD*, TABLE_SHARE*, bool) (sql_statistics.cc:2000)
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==19269== by 0x5B76F2: open_and_process_table(THD*, LEX*, TABLE_LIST*, unsigned int*, unsigned int, Prelocking_strategy*, bool, Open_table_context*, st_mem_root*) (sql_base.cc:4646)
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==19269== by 0x5B8428: open_tables(THD*, TABLE_LIST**, unsigned int*, unsigned int, Prelocking_strategy*) (sql_base.cc:5062)
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==19269== by 0x5B92C2: open_and_lock_tables(THD*, TABLE_LIST*, bool, unsigned int, Prelocking_strategy*) (sql_base.cc:5667)
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==19269== by 0x5AC212: open_and_lock_tables(THD*, TABLE_LIST*, bool, unsigned int) (sql_base.h:532)
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==19269== by 0x61C06B: execute_sqlcom_select(THD*, TABLE_LIST*) (sql_parse.cc:4755)
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==19269== by 0x614903: mysql_execute_command(THD*) (sql_parse.cc:2266)
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==19269== by 0x61EBA5: mysql_parse(THD*, char*, unsigned int, Parser_state*) (sql_parse.cc:5920)
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==19269== by 0x611C27: dispatch_command(enum_server_command, THD*, char*, unsigned int) (sql_parse.cc:1091)
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==19269== by 0x610E55: do_command(THD*) (sql_parse.cc:810)
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==19269== by 0x729CC7: do_handle_one_connection(THD*) (sql_connect.cc:1266)
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==19269== by 0x7296B2: handle_one_connection (sql_connect.cc:1181)
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