#7 0x00007f1875a73f12 in __GI___assert_fail (assertion=0x5574f4d78879 "0", file=0x5574f4d787f8 "/data/src/10.2/strings/json_lib.c", line=1360, function=0x5574f4d78900 <__PRETTY_FUNCTION__.9403> "json_find_path") at assert.c:101
#8 0x00005574f490b38e in json_find_path (je=0x7f18705a6dc0, p=0x7f1854012808, p_cur_step=0x7f1854012c50, array_counters=0x7f18705a6d40) at /data/src/10.2/strings/json_lib.c:1360
#9 0x00005574f432f294 in Item_func_json_value::val_str (this=0x7f1854012748, str=0x7f18705a6fb0) at /data/src/10.2/sql/item_jsonfunc.cc:486
#10 0x00005574f418823b in Item::send (this=0x7f1854012748, protocol=0x7f18540010a8, buffer=0x7f18705a6fb0) at /data/src/10.2/sql/item.cc:6921
#11 0x00005574f3e0cc4b in Protocol::send_result_set_row (this=0x7f18540010a8, row_items=0x7f1854004f50) at /data/src/10.2/sql/protocol.cc:990
#12 0x00005574f3ea0db2 in select_send::send_data (this=0x7f1854012d48, items=...) at /data/src/10.2/sql/sql_class.cc:2731
#13 0x00005574f3f30833 in JOIN::exec_inner (this=0x7f1854012d68) at /data/src/10.2/sql/sql_select.cc:3514
#14 0x00005574f3f302b2 in JOIN::exec (this=0x7f1854012d68) at /data/src/10.2/sql/sql_select.cc:3433
#15 0x00005574f3f31468 in mysql_select (thd=0x7f1854000af0, tables=0x0, wild_num=0, fields=..., conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2147748608, result=0x7f1854012d48, unit=0x7f18540046e8, select_lex=0x7f1854004e28) at /data/src/10.2/sql/sql_select.cc:3833
#16 0x00005574f3f25626 in handle_select (thd=0x7f1854000af0, lex=0x7f1854004628, result=0x7f1854012d48, setup_tables_done_option=0) at /data/src/10.2/sql/sql_select.cc:361
#17 0x00005574f3ef1070 in execute_sqlcom_select (thd=0x7f1854000af0, all_tables=0x0) at /data/src/10.2/sql/sql_parse.cc:6218
#18 0x00005574f3ee78f1 in mysql_execute_command (thd=0x7f1854000af0) at /data/src/10.2/sql/sql_parse.cc:3524
#19 0x00005574f3ef4da7 in mysql_parse (thd=0x7f1854000af0, rawbuf=0x7f1854012458 "SELECT JSON_VALUE('[\"foo\"]', '$**[0]') AS f", length=43, parser_state=0x7f18705a8610, is_com_multi=false, is_next_command=false) at /data/src/10.2/sql/sql_parse.cc:7733
#20 0x00005574f3ee30d3 in dispatch_command (command=COM_QUERY, thd=0x7f1854000af0, packet=0x7f185408d421 "", packet_length=43, is_com_multi=false, is_next_command=false) at /data/src/10.2/sql/sql_parse.cc:1824
#21 0x00005574f3ee1b4e in do_command (thd=0x7f1854000af0) at /data/src/10.2/sql/sql_parse.cc:1377
#22 0x00005574f4037b29 in do_handle_one_connection (connect=0x5574f7d44d00) at /data/src/10.2/sql/sql_connect.cc:1336
#23 0x00005574f4037894 in handle_one_connection (arg=0x5574f7d44d00) at /data/src/10.2/sql/sql_connect.cc:1241
#24 0x00005574f484e352 in pfs_spawn_thread (arg=0x5574f7d4faf0) at /data/src/10.2/storage/perfschema/pfs.cc:1869
#25 0x00007f18779fc4a4 in start_thread (arg=0x7f18705a9700) at pthread_create.c:456
#26 0x00007f1875b30d0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97
Non-debug build returns NULL, I can't tell whether it's correct or not (with a standard collation it returns foo):
#2 0x000055c9e0793226 in json_read_string_const_chr (js=0x1501183ff6f0) at /test/11.0_opt/strings/json_lib.c:359
#3 0x000055c9e07947ad in json_key_matches (je=0x1501183ff800, k=0x1501183ff6f0) at /test/11.0_opt/strings/json_lib.c:1408
#4 0x000055c9e07949a1 in json_find_path (je=0x1501183ff800, p=0x1500dc011048, p_cur_step=0x1500dc011490, array_counters=0x1501183ff780) at /test/11.0_opt/strings/json_lib.c:1436
#5 0x000055c9e01a0588 in Json_path_extractor::extract (this=this@entry=0x1500dc011040, str=str@entry=0x1501183ff9d0, item_js=<optimized out>, item_jp=<optimized out>, cs=<optimized out>) at /test/11.0_opt/sql/item_jsonfunc.cc:706
#6 0x000055c9e01abf2d in Item_func_json_value::val_str (this=0x1500dc010f98, to=0x1501183ff9d0) at /test/11.0_opt/sql/item_jsonfunc.h:194
#7 0x000055c9e01d65f8 in Type_handler::Item_send_str (this=<optimized out>, item=<optimized out>, protocol=0x1500dc0011f0, buf=<optimized out>) at /test/11.0_opt/sql/sql_type.cc:7454
#8 0x000055c9dff5ceba in Protocol::send_result_set_row (this=this@entry=0x1500dc0011f0, row_items=row_items@entry=0x1500dc010ad8) at /test/11.0_opt/sql/protocol.cc:1332
#9 0x000055c9dffd9a17 in select_send::send_data (this=0x1500dc011e38, items=@0x1500dc010ad8: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x1500dc0114d8, last = 0x1500dc0114d8, elements = 1}, <No data fields>}) at /test/11.0_opt/sql/sql_class.cc:3103
#10 0x000055c9e00aa370 in select_result_sink::send_data_with_check (u=<optimized out>, sent=0, items=<optimized out>, this=<optimized out>) at /test/11.0_opt/sql/sql_class.h:5721
#12 JOIN::exec_inner (this=0x1500dc011e60) at /test/11.0_opt/sql/sql_select.cc:4688
#13 0x000055c9e00aab08 in JOIN::exec (this=this@entry=0x1500dc011e60) at /test/11.0_opt/sql/sql_select.cc:4600
#14 0x000055c9e00a8c11 in mysql_select (thd=0x1500dc000c68, tables=0x0, fields=@0x1500dc010ad8: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x1500dc0114d8, last = 0x1500dc0114d8, elements = 1}, <No data fields>}, conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=<optimized out>, result=0x1500dc011e38, unit=0x1500dc004ce8, select_lex=0x1500dc010838) at /test/11.0_opt/sql/sql_select.cc:5080
#15 0x000055c9e00a9354 in handle_select (thd=thd@entry=0x1500dc000c68, lex=lex@entry=0x1500dc004c10, result=result@entry=0x1500dc011e38, setup_tables_done_option=setup_tables_done_option@entry=0) at /test/11.0_opt/sql/sql_select.cc:581
#16 0x000055c9e0024b25 in execute_sqlcom_select (thd=0x1500dc000c68, all_tables=0x0) at /test/11.0_opt/sql/sql_parse.cc:6265
#17 0x000055c9e0033870 in mysql_execute_command (thd=0x1500dc000c68, is_called_from_prepared_stmt=<optimized out>) at /test/11.0_opt/sql/sql_parse.cc:3949
#18 0x000055c9e0035104 in mysql_parse (rawbuf=<optimized out>, length=<optimized out>, parser_state=<optimized out>, thd=0x1500dc000c68) at /test/11.0_opt/sql/sql_parse.cc:8000
#20 0x000055c9e00376e2 in dispatch_command (command=COM_QUERY, thd=0x1500dc000c68, packet=<optimized out>, packet_length=<optimized out>, blocking=<optimized out>) at /test/11.0_opt/sql/sql_parse.cc:1991
#21 0x000055c9e0038e80 in do_command (thd=0x1500dc000c68, blocking=blocking@entry=true) at /test/11.0_opt/sql/sql_parse.cc:1407
#22 0x000055c9e014eab7 in do_handle_one_connection (connect=<optimized out>, connect@entry=0x55c9e2ab9028, put_in_cache=put_in_cache@entry=true) at /test/11.0_opt/sql/sql_connect.cc:1416
#23 0x000055c9e014ed8d in handle_one_connection (arg=0x55c9e2ab9028) at /test/11.0_opt/sql/sql_connect.cc:1318
#24 0x00001501312cbb43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#25 0x000015013135da00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
Again, 10.9+ only. Both debug and optimized builds affected.
Another stack on optimized builds with this testcase:
SET @json='{ "A": [ [{"k":"v"},[15]],true],"B": {"C": 1} }';
#2 0x0000564dd6998226 in json_read_string_const_chr (js=0x151a240aa6f0) at /test/11.0_opt/strings/json_lib.c:359
#3 0x0000564dd69997ad in json_key_matches (je=0x151a240aa800, k=0x151a240aa6f0) at /test/11.0_opt/strings/json_lib.c:1408
#4 0x0000564dd69999a1 in json_find_path (je=0x151a240aa800, p=0x1519e80110e0, p_cur_step=0x1519e8011528, array_counters=0x151a240aa780) at /test/11.0_opt/strings/json_lib.c:1436
#5 0x0000564dd63a5588 in Json_path_extractor::extract (this=this@entry=0x1519e80110d8, str=str@entry=0x151a240aa9d0, item_js=<optimized out>, item_jp=<optimized out>, cs=<optimized out>) at /test/11.0_opt/sql/item_jsonfunc.cc:706
#6 0x0000564dd63b0f2d in Item_func_json_value::val_str (this=0x1519e8011030, to=0x151a240aa9d0) at /test/11.0_opt/sql/item_jsonfunc.h:194
#7 0x0000564dd63db5f8 in Type_handler::Item_send_str (this=<optimized out>, item=<optimized out>, protocol=0x1519e80011f0, buf=<optimized out>) at /test/11.0_opt/sql/sql_type.cc:7454
#8 0x0000564dd6161eba in Protocol::send_result_set_row (this=this@entry=0x1519e80011f0, row_items=row_items@entry=0x1519e8010ad8) at /test/11.0_opt/sql/protocol.cc:1332
#9 0x0000564dd61dea17 in select_send::send_data (this=0x1519e8011ed0, items=@0x1519e8010ad8: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x1519e8011570, last = 0x1519e8011570, elements = 1}, <No data fields>}) at /test/11.0_opt/sql/sql_class.cc:3103
#10 0x0000564dd62af370 in select_result_sink::send_data_with_check (u=<optimized out>, sent=0, items=<optimized out>, this=<optimized out>) at /test/11.0_opt/sql/sql_class.h:5721
#12 JOIN::exec_inner (this=0x1519e8011ef8) at /test/11.0_opt/sql/sql_select.cc:4688
#13 0x0000564dd62afb08 in JOIN::exec (this=this@entry=0x1519e8011ef8) at /test/11.0_opt/sql/sql_select.cc:4600
#14 0x0000564dd62adc11 in mysql_select (thd=0x1519e8000c68, tables=0x0, fields=@0x1519e8010ad8: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x1519e8011570, last = 0x1519e8011570, elements = 1}, <No data fields>}, conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=<optimized out>, result=0x1519e8011ed0, unit=0x1519e8004ce8, select_lex=0x1519e8010838) at /test/11.0_opt/sql/sql_select.cc:5080
#15 0x0000564dd62ae354 in handle_select (thd=thd@entry=0x1519e8000c68, lex=lex@entry=0x1519e8004c10, result=result@entry=0x1519e8011ed0, setup_tables_done_option=setup_tables_done_option@entry=0) at /test/11.0_opt/sql/sql_select.cc:581
#16 0x0000564dd6229b25 in execute_sqlcom_select (thd=0x1519e8000c68, all_tables=0x0) at /test/11.0_opt/sql/sql_parse.cc:6265
#17 0x0000564dd6238870 in mysql_execute_command (thd=0x1519e8000c68, is_called_from_prepared_stmt=<optimized out>) at /test/11.0_opt/sql/sql_parse.cc:3949
#18 0x0000564dd623a104 in mysql_parse (rawbuf=<optimized out>, length=<optimized out>, parser_state=<optimized out>, thd=0x1519e8000c68) at /test/11.0_opt/sql/sql_parse.cc:8000
#20 0x0000564dd623c6e2 in dispatch_command (command=COM_QUERY, thd=0x1519e8000c68, packet=<optimized out>, packet_length=<optimized out>, blocking=<optimized out>) at /test/11.0_opt/sql/sql_parse.cc:1991
#21 0x0000564dd623de80 in do_command (thd=0x1519e8000c68, blocking=blocking@entry=true) at /test/11.0_opt/sql/sql_parse.cc:1407
#22 0x0000564dd6353ab7 in do_handle_one_connection (connect=<optimized out>, connect@entry=0x564dd7f6a0c8, put_in_cache=put_in_cache@entry=true) at /test/11.0_opt/sql/sql_connect.cc:1416
#23 0x0000564dd6353d8d in handle_one_connection (arg=0x564dd7f6a0c8) at /test/11.0_opt/sql/sql_connect.cc:1318
#24 0x0000151a3b39eb43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#25 0x0000151a3b430a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
Various other combinations likely exist, like my_mb_wc_tis620:
SET @json='{ "A": [ [{"k":"v"},[15]],true],"B": {"C": 1} }';
Bug
Critical
Another stack on optimized builds with this testcase:
11.0.1 b075191ba8598af6aff5549e6e19f6255aef258a (Optimized)
Core was generated by `/test/MD090123-mariadb-11.0.1-linux-x86_64-opt/bin/mysqld --no-defaults --core-'.Program terminated with signal SIGSEGV, Segmentation fault.#0 my_mb_wc_ucs2_quick (e=0x55c9e1076ae0 <my_charset_ucs2_bin> "Z", s=0x0,pwc=0x1501183ff700) at /test/11.0_opt/strings/ctype-ucs2.h:2727 *pwc= ((uchar)s[0]) * 256 + ((uchar)s[1]);[Current thread is 1 (Thread 0x150118402640 (LWP 3092039))](gdb) bt#0 my_mb_wc_ucs2_quick (e=0x55c9e1076ae0 <my_charset_ucs2_bin> "Z", s=0x0, pwc=0x1501183ff700) at /test/11.0_opt/strings/ctype-ucs2.h:27#1 my_ucs2_uni (cs=0x55c9e1076ae0 <my_charset_ucs2_bin>, pwc=0x1501183ff700, s=0x0, e=0x55c9e1076ae0 <my_charset_ucs2_bin> "Z") at /test/11.0_opt/strings/ctype-ucs2.c:3089#2 0x000055c9e0793226 in json_read_string_const_chr (js=0x1501183ff6f0) at /test/11.0_opt/strings/json_lib.c:359#3 0x000055c9e07947ad in json_key_matches (je=0x1501183ff800, k=0x1501183ff6f0) at /test/11.0_opt/strings/json_lib.c:1408#4 0x000055c9e07949a1 in json_find_path (je=0x1501183ff800, p=0x1500dc011048, p_cur_step=0x1500dc011490, array_counters=0x1501183ff780) at /test/11.0_opt/strings/json_lib.c:1436#5 0x000055c9e01a0588 in Json_path_extractor::extract (this=this@entry=0x1500dc011040, str=str@entry=0x1501183ff9d0, item_js=<optimized out>, item_jp=<optimized out>, cs=<optimized out>) at /test/11.0_opt/sql/item_jsonfunc.cc:706#6 0x000055c9e01abf2d in Item_func_json_value::val_str (this=0x1500dc010f98, to=0x1501183ff9d0) at /test/11.0_opt/sql/item_jsonfunc.h:194#7 0x000055c9e01d65f8 in Type_handler::Item_send_str (this=<optimized out>, item=<optimized out>, protocol=0x1500dc0011f0, buf=<optimized out>) at /test/11.0_opt/sql/sql_type.cc:7454#8 0x000055c9dff5ceba in Protocol::send_result_set_row (this=this@entry=0x1500dc0011f0, row_items=row_items@entry=0x1500dc010ad8) at /test/11.0_opt/sql/protocol.cc:1332#9 0x000055c9dffd9a17 in select_send::send_data (this=0x1500dc011e38, items=@0x1500dc010ad8: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x1500dc0114d8, last = 0x1500dc0114d8, elements = 1}, <No data fields>}) at /test/11.0_opt/sql/sql_class.cc:3103#10 0x000055c9e00aa370 in select_result_sink::send_data_with_check (u=<optimized out>, sent=0, items=<optimized out>, this=<optimized out>) at /test/11.0_opt/sql/sql_class.h:5721#11 select_result_sink::send_data_with_check (sent=0, u=<optimized out>, items=<optimized out>, this=<optimized out>) at /test/11.0_opt/sql/sql_class.h:5711#12 JOIN::exec_inner (this=0x1500dc011e60) at /test/11.0_opt/sql/sql_select.cc:4688#13 0x000055c9e00aab08 in JOIN::exec (this=this@entry=0x1500dc011e60) at /test/11.0_opt/sql/sql_select.cc:4600#14 0x000055c9e00a8c11 in mysql_select (thd=0x1500dc000c68, tables=0x0, fields=@0x1500dc010ad8: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x1500dc0114d8, last = 0x1500dc0114d8, elements = 1}, <No data fields>}, conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=<optimized out>, result=0x1500dc011e38, unit=0x1500dc004ce8, select_lex=0x1500dc010838) at /test/11.0_opt/sql/sql_select.cc:5080#15 0x000055c9e00a9354 in handle_select (thd=thd@entry=0x1500dc000c68, lex=lex@entry=0x1500dc004c10, result=result@entry=0x1500dc011e38, setup_tables_done_option=setup_tables_done_option@entry=0) at /test/11.0_opt/sql/sql_select.cc:581#16 0x000055c9e0024b25 in execute_sqlcom_select (thd=0x1500dc000c68, all_tables=0x0) at /test/11.0_opt/sql/sql_parse.cc:6265#17 0x000055c9e0033870 in mysql_execute_command (thd=0x1500dc000c68, is_called_from_prepared_stmt=<optimized out>) at /test/11.0_opt/sql/sql_parse.cc:3949#18 0x000055c9e0035104 in mysql_parse (rawbuf=<optimized out>, length=<optimized out>, parser_state=<optimized out>, thd=0x1500dc000c68) at /test/11.0_opt/sql/sql_parse.cc:8000#19 mysql_parse (thd=0x1500dc000c68, rawbuf=<optimized out>, length=<optimized out>, parser_state=<optimized out>) at /test/11.0_opt/sql/sql_parse.cc:7922#20 0x000055c9e00376e2 in dispatch_command (command=COM_QUERY, thd=0x1500dc000c68, packet=<optimized out>, packet_length=<optimized out>, blocking=<optimized out>) at /test/11.0_opt/sql/sql_parse.cc:1991#21 0x000055c9e0038e80 in do_command (thd=0x1500dc000c68, blocking=blocking@entry=true) at /test/11.0_opt/sql/sql_parse.cc:1407#22 0x000055c9e014eab7 in do_handle_one_connection (connect=<optimized out>, connect@entry=0x55c9e2ab9028, put_in_cache=put_in_cache@entry=true) at /test/11.0_opt/sql/sql_connect.cc:1416#23 0x000055c9e014ed8d in handle_one_connection (arg=0x55c9e2ab9028) at /test/11.0_opt/sql/sql_connect.cc:1318#24 0x00001501312cbb43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442#25 0x000015013135da00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81Again, 10.9+ only. Both debug and optimized builds affected.
Another stack on optimized builds with this testcase:
11.0.1 b075191ba8598af6aff5549e6e19f6255aef258a (Optimized)
Core was generated by `/test/MD090123-mariadb-11.0.1-linux-x86_64-opt/bin/mysqld --no-defaults --core-'.Program terminated with signal SIGSEGV, Segmentation fault.#0 my_mb_wc_utf32_quick (e=0x564dd727c020 <my_charset_utf32_general_ci> "<",s=0x0, pwc=0x151a240aa700) at /test/11.0_opt/strings/ctype-utf32.h:2929 *pwc= MY_UTF32_WC4(s[0], s[1], s[2], s[3]);[Current thread is 1 (Thread 0x151a240ad640 (LWP 808313))](gdb) bt#0 my_mb_wc_utf32_quick (e=0x564dd727c020 <my_charset_utf32_general_ci> "<", s=0x0, pwc=0x151a240aa700) at /test/11.0_opt/strings/ctype-utf32.h:29#1 my_utf32_uni (cs=0x564dd727c020 <my_charset_utf32_general_ci>, pwc=0x151a240aa700, s=0x0, e=0x564dd727c020 <my_charset_utf32_general_ci> "<") at /test/11.0_opt/strings/ctype-ucs2.c:2181#2 0x0000564dd6998226 in json_read_string_const_chr (js=0x151a240aa6f0) at /test/11.0_opt/strings/json_lib.c:359#3 0x0000564dd69997ad in json_key_matches (je=0x151a240aa800, k=0x151a240aa6f0) at /test/11.0_opt/strings/json_lib.c:1408#4 0x0000564dd69999a1 in json_find_path (je=0x151a240aa800, p=0x1519e80110e0, p_cur_step=0x1519e8011528, array_counters=0x151a240aa780) at /test/11.0_opt/strings/json_lib.c:1436#5 0x0000564dd63a5588 in Json_path_extractor::extract (this=this@entry=0x1519e80110d8, str=str@entry=0x151a240aa9d0, item_js=<optimized out>, item_jp=<optimized out>, cs=<optimized out>) at /test/11.0_opt/sql/item_jsonfunc.cc:706#6 0x0000564dd63b0f2d in Item_func_json_value::val_str (this=0x1519e8011030, to=0x151a240aa9d0) at /test/11.0_opt/sql/item_jsonfunc.h:194#7 0x0000564dd63db5f8 in Type_handler::Item_send_str (this=<optimized out>, item=<optimized out>, protocol=0x1519e80011f0, buf=<optimized out>) at /test/11.0_opt/sql/sql_type.cc:7454#8 0x0000564dd6161eba in Protocol::send_result_set_row (this=this@entry=0x1519e80011f0, row_items=row_items@entry=0x1519e8010ad8) at /test/11.0_opt/sql/protocol.cc:1332#9 0x0000564dd61dea17 in select_send::send_data (this=0x1519e8011ed0, items=@0x1519e8010ad8: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x1519e8011570, last = 0x1519e8011570, elements = 1}, <No data fields>}) at /test/11.0_opt/sql/sql_class.cc:3103#10 0x0000564dd62af370 in select_result_sink::send_data_with_check (u=<optimized out>, sent=0, items=<optimized out>, this=<optimized out>) at /test/11.0_opt/sql/sql_class.h:5721#11 select_result_sink::send_data_with_check (sent=0, u=<optimized out>, items=<optimized out>, this=<optimized out>) at /test/11.0_opt/sql/sql_class.h:5711#12 JOIN::exec_inner (this=0x1519e8011ef8) at /test/11.0_opt/sql/sql_select.cc:4688#13 0x0000564dd62afb08 in JOIN::exec (this=this@entry=0x1519e8011ef8) at /test/11.0_opt/sql/sql_select.cc:4600#14 0x0000564dd62adc11 in mysql_select (thd=0x1519e8000c68, tables=0x0, fields=@0x1519e8010ad8: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x1519e8011570, last = 0x1519e8011570, elements = 1}, <No data fields>}, conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=<optimized out>, result=0x1519e8011ed0, unit=0x1519e8004ce8, select_lex=0x1519e8010838) at /test/11.0_opt/sql/sql_select.cc:5080#15 0x0000564dd62ae354 in handle_select (thd=thd@entry=0x1519e8000c68, lex=lex@entry=0x1519e8004c10, result=result@entry=0x1519e8011ed0, setup_tables_done_option=setup_tables_done_option@entry=0) at /test/11.0_opt/sql/sql_select.cc:581#16 0x0000564dd6229b25 in execute_sqlcom_select (thd=0x1519e8000c68, all_tables=0x0) at /test/11.0_opt/sql/sql_parse.cc:6265#17 0x0000564dd6238870 in mysql_execute_command (thd=0x1519e8000c68, is_called_from_prepared_stmt=<optimized out>) at /test/11.0_opt/sql/sql_parse.cc:3949#18 0x0000564dd623a104 in mysql_parse (rawbuf=<optimized out>, length=<optimized out>, parser_state=<optimized out>, thd=0x1519e8000c68) at /test/11.0_opt/sql/sql_parse.cc:8000#19 mysql_parse (thd=0x1519e8000c68, rawbuf=<optimized out>, length=<optimized out>, parser_state=<optimized out>) at /test/11.0_opt/sql/sql_parse.cc:7922#20 0x0000564dd623c6e2 in dispatch_command (command=COM_QUERY, thd=0x1519e8000c68, packet=<optimized out>, packet_length=<optimized out>, blocking=<optimized out>) at /test/11.0_opt/sql/sql_parse.cc:1991#21 0x0000564dd623de80 in do_command (thd=0x1519e8000c68, blocking=blocking@entry=true) at /test/11.0_opt/sql/sql_parse.cc:1407#22 0x0000564dd6353ab7 in do_handle_one_connection (connect=<optimized out>, connect@entry=0x564dd7f6a0c8, put_in_cache=put_in_cache@entry=true) at /test/11.0_opt/sql/sql_connect.cc:1416#23 0x0000564dd6353d8d in handle_one_connection (arg=0x564dd7f6a0c8) at /test/11.0_opt/sql/sql_connect.cc:1318#24 0x0000151a3b39eb43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442#25 0x0000151a3b430a00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81Various other combinations likely exist, like my_mb_wc_tis620: