Comment 1 for bug 684086

Valgrind warnings:

==19248== Invalid write of size 1
==19248== at 0x40081BD: memmove (mc_replace_strmem.c:629)
==19248== by 0x838021D: get_best_index_intersect(PARAM*, SEL_TREE*, double) (opt_range.cc:5351)
==19248== by 0x837BB8E: SQL_SELECT::test_quick_select(THD*, Bitmap<64u>, unsigned long long, unsigned long long, bool) (opt_range.cc:3067)
==19248== by 0x82E7B1A: get_quick_record_count(THD*, SQL_SELECT*, st_table*, Bitmap<64u> const*, unsigned long long) (sql_select.cc:2600)
==19248== by 0x82E98D8: make_join_statistics(JOIN*, TABLE_LIST*, Item*, st_dynamic_array*) (sql_select.cc:3037)
==19248== by 0x82E2066: JOIN::optimize() (sql_select.cc:1029)
==19248== by 0x82E7842: 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:2538)
==19248== by 0x82DFF48: handle_select(THD*, st_lex*, select_result*, unsigned long) (sql_select.cc:280)
==19248== by 0x8286DD9: execute_sqlcom_select(THD*, TABLE_LIST*) (sql_parse.cc:5166)
==19248== by 0x827D735: mysql_execute_command(THD*) (sql_parse.cc:2340)
==19248== by 0x8288E45: mysql_parse(THD*, char*, unsigned int, char const**) (sql_parse.cc:6092)
==19248== by 0x827B221: dispatch_command(enum_server_command, THD*, char*, unsigned int) (sql_parse.cc:1269)
==19248== by 0x827A47E: do_command(THD*) (sql_parse.cc:895)
==19248== by 0x827748F: handle_one_connection (sql_connect.cc:1138)
==19248== by 0x821918: start_thread (in /lib/libpthread-2.12.1.so)
==19248== by 0x76ACCD: clone (in /lib/libc-2.12.1.so)
==19248== Address 0x52d26b7 is 3 bytes after a block of size 20 alloc'd
==19248== at 0x4005BDC: malloc (vg_replace_malloc.c:195)
==19248== by 0x87164F3: my_malloc (my_malloc.c:38)
==19248== by 0x87170F6: alloc_root (my_alloc.c:165)
==19248== by 0x837F54A: prepare_search_best_index_intersect(PARAM*, SEL_TREE*, st_common_index_intersection_info*, st_partial_index_intersection_info*, double) (opt_range.cc:4995)
==19248== by 0x838015A: get_best_index_intersect(PARAM*, SEL_TREE*, double) (opt_range.cc:5339)
==19248== by 0x837BB8E: SQL_SELECT::test_quick_select(THD*, Bitmap<64u>, unsigned long long, unsigned long long, bool) (opt_range.cc:3067)
==19248== by 0x82E7B1A: get_quick_record_count(THD*, SQL_SELECT*, st_table*, Bitmap<64u> const*, unsigned long long) (sql_select.cc:2600)
==19248== by 0x82E98D8: make_join_statistics(JOIN*, TABLE_LIST*, Item*, st_dynamic_array*) (sql_select.cc:3037)
==19248== by 0x82E2066: JOIN::optimize() (sql_select.cc:1029)
==19248== by 0x82E7842: 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:2538)
==19248== by 0x82DFF48: handle_select(THD*, st_lex*, select_result*, unsigned long) (sql_select.cc:280)
==19248== by 0x8286DD9: execute_sqlcom_select(THD*, TABLE_LIST*) (sql_parse.cc:5166)
==19248== by 0x827D735: mysql_execute_command(THD*) (sql_parse.cc:2340)
==19248== by 0x8288E45: mysql_parse(THD*, char*, unsigned int, char const**) (sql_parse.cc:6092)
==19248== by 0x827B221: dispatch_command(enum_server_command, THD*, char*, unsigned int) (sql_parse.cc:1269)
==19248== by 0x827A47E: do_command(THD*) (sql_parse.cc:895)
==19248==
==19248== Invalid read of size 4
==19248== at 0x83802DF: get_best_index_intersect(PARAM*, SEL_TREE*, double) (opt_range.cc:5365)
==19248== by 0x837BB8E: SQL_SELECT::test_quick_select(THD*, Bitmap<64u>, unsigned long long, unsigned long long, bool) (opt_range.cc:3067)
==19248== by 0x82E7B1A: get_quick_record_count(THD*, SQL_SELECT*, st_table*, Bitmap<64u> const*, unsigned long long) (sql_select.cc:2600)
==19248== by 0x82E98D8: make_join_statistics(JOIN*, TABLE_LIST*, Item*, st_dynamic_array*) (sql_select.cc:3037)
==19248== by 0x82E2066: JOIN::optimize() (sql_select.cc:1029)
==19248== by 0x82E7842: 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:2538)
==19248== by 0x82DFF48: handle_select(THD*, st_lex*, select_result*, unsigned long) (sql_select.cc:280)
==19248== by 0x8286DD9: execute_sqlcom_select(THD*, TABLE_LIST*) (sql_parse.cc:5166)
==19248== by 0x827D735: mysql_execute_command(THD*) (sql_parse.cc:2340)
==19248== by 0x8288E45: mysql_parse(THD*, char*, unsigned int, char const**) (sql_parse.cc:6092)
==19248== by 0x827B221: dispatch_command(enum_server_command, THD*, char*, unsigned int) (sql_parse.cc:1269)
==19248== by 0x827A47E: do_command(THD*) (sql_parse.cc:895)
==19248== by 0x827748F: handle_one_connection (sql_connect.cc:1138)
==19248== by 0x821918: start_thread (in /lib/libpthread-2.12.1.so)
==19248== by 0x76ACCD: clone (in /lib/libc-2.12.1.so)
==19248== Address 0x52d26b4 is 0 bytes after a block of size 20 alloc'd
==19248== at 0x4005BDC: malloc (vg_replace_malloc.c:195)
==19248== by 0x87164F3: my_malloc (my_malloc.c:38)
==19248== by 0x87170F6: alloc_root (my_alloc.c:165)
==19248== by 0x837F54A: prepare_search_best_index_intersect(PARAM*, SEL_TREE*, st_common_index_intersection_info*, st_partial_index_intersection_info*, double) (opt_range.cc:4995)
==19248== by 0x838015A: get_best_index_intersect(PARAM*, SEL_TREE*, double) (opt_range.cc:5339)
==19248== by 0x837BB8E: SQL_SELECT::test_quick_select(THD*, Bitmap<64u>, unsigned long long, unsigned long long, bool) (opt_range.cc:3067)
==19248== by 0x82E7B1A: get_quick_record_count(THD*, SQL_SELECT*, st_table*, Bitmap<64u> const*, unsigned long long) (sql_select.cc:2600)
==19248== by 0x82E98D8: make_join_statistics(JOIN*, TABLE_LIST*, Item*, st_dynamic_array*) (sql_select.cc:3037)
==19248== by 0x82E2066: JOIN::optimize() (sql_select.cc:1029)
==19248== by 0x82E7842: 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:2538)
==19248== by 0x82DFF48: handle_select(THD*, st_lex*, select_result*, unsigned long) (sql_select.cc:280)
==19248== by 0x8286DD9: execute_sqlcom_select(THD*, TABLE_LIST*) (sql_parse.cc:5166)
==19248== by 0x827D735: mysql_execute_command(THD*) (sql_parse.cc:2340)
==19248== by 0x8288E45: mysql_parse(THD*, char*, unsigned int, char const**) (sql_parse.cc:6092)
==19248== by 0x827B221: dispatch_command(enum_server_command, THD*, char*, unsigned int) (sql_parse.cc:1269)
==19248== by 0x827A47E: do_command(THD*) (sql_parse.cc:895)
==19248==