SIGSEGV in Binary_string::c_ptr | Item_func_trunc::get_date

SET SQL_MODE=EMPTY_STRING_IS_NULL;

SELECT trunc(time'24:00:00','');

Core was generated by `/test/mtest/MD080825-mariadb-12.1.1-linux-x86_64-opt/bin/mariadbd --no-defaults'.

Program terminated with signal SIGSEGV, Segmentation fault.

#0  Binary_string::c_ptr (this=<optimized out>)at /test/mtest/12.1_opt/sql/sql_string.h:698

698	    if (unlikely(!Ptr))

[Current thread is 1 (LWP 343474)]

(gdb) bt

#0  Binary_string::c_ptr (this=<optimized out>)at /test/mtest/12.1_opt/sql/sql_string.h:698

#1  Item_func_trunc::get_date (this=0x7a7004017db0, thd=0x7a7004000c68, ltime=0x7a8ee40d1108, fuzzydate=<optimized out>)at /test/mtest/12.1_opt/sql/item_timefunc.cc:4143

#2  0x0000619954c95ae8 in Type_handler::Item_send_datetime (this=<optimized out>, item=0x7a7004017db0, protocol=0x7a70040012a8, buf=<optimized out>) at /test/mtest/12.1_opt/sql/sql_type.cc:7657

#3  0x0000619954a075b1 in Protocol::send_result_set_row (this=0x7a70040012a8, row_items=<optimized out>) at /test/mtest/12.1_opt/sql/protocol.cc:1359

#4  0x0000619954a7720f in select_send::send_data (this=0x7a70040187d8, items=@0x7a70040179d0: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x7a7004017e70, last = 0x7a7004017e70, elements = 1}, <No data fields>})at /test/mtest/12.1_opt/sql/sql_class.cc:3348

#5  0x0000619954a76fbf in select_result_sink::send_data_with_check (this=0x7a7004017d08, items=@0x7a8ee40d0e38: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x619955dc6a60 <my_charset_bin>, last = 0x0, elements = 0}, <No data fields>}, u=0x1f, sent=17037322985861543168)at /test/mtest/12.1_opt/sql/sql_class.cc:3246

#6  0x0000619954b22e31 in JOIN::exec_inner (this=this@entry=0x7a7004018800)at /test/mtest/12.1_opt/sql/sql_select.cc:4957

#7  0x0000619954b08997 in JOIN::exec (this=0x7a7004018800)at /test/mtest/12.1_opt/sql/sql_select.cc:4874

#8  mysql_select (thd=thd@entry=0x7a7004000c68, tables=<optimized out>, fields=@0x7a70040179d0: {<base_list> = {<Sql_alloc> = {<No data fields>}, first = 0x7a7004017e70, last = 0x7a7004017e70, elements = 1}, <No data fields>}, conds=<optimized out>, og_num=<optimized out>, order=<optimized out>, group=0x0, having=0x0, proc_param=0x0, select_options=<optimized out>, result=0x7a70040187d8, unit=0x7a7004005090, select_lex=0x7a7004017718)at /test/mtest/12.1_opt/sql/sql_select.cc:5402

#9  0x0000619954b08619 in handle_select (thd=thd@entry=0x7a7004000c68, lex=lex@entry=0x7a7004004fb0, result=result@entry=0x7a70040187d8, setup_tables_done_option=setup_tables_done_option@entry=0)at /test/mtest/12.1_opt/sql/sql_select.cc:634

#10 0x0000619954ad5ab7 in execute_sqlcom_select (thd=thd@entry=0x7a7004000c68, all_tables=0x0) at /test/mtest/12.1_opt/sql/sql_parse.cc:6167

#11 0x0000619954ad45d1 in mysql_execute_command (thd=thd@entry=0x7a7004000c68, is_called_from_prepared_stmt=false)at /test/mtest/12.1_opt/sql/sql_parse.cc:3950

#12 0x0000619954acca21 in mysql_parse (thd=thd@entry=0x7a7004000c68, rawbuf=<optimized out>, length=<optimized out>, parser_state=parser_state@entry=0x7a8ee40d2420)at /test/mtest/12.1_opt/sql/sql_parse.cc:7883

#13 0x0000619954acaf3f in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x7a7004000c68, packet=packet@entry=0x7a70040089f9 "", packet_length=packet_length@entry=31, blocking=true)at /test/mtest/12.1_opt/sql/sql_parse.cc:1878

#14 0x0000619954acce31 in do_command (thd=thd@entry=0x7a7004000c68, blocking=true) at /test/mtest/12.1_opt/sql/sql_parse.cc:1417

#15 0x0000619954bf9d2d in do_handle_one_connection (connect=<optimized out>, connect@entry=0x61998438daa8, put_in_cache=true)at /test/mtest/12.1_opt/sql/sql_connect.cc:1414

#16 0x0000619954bf9aef in handle_one_connection (arg=arg@entry=0x61998438daa8)at /test/mtest/12.1_opt/sql/sql_connect.cc:1326

#17 0x0000619954fa7959 in pfs_spawn_thread (arg=0x619984333a38)at /test/mtest/12.1_opt/storage/perfschema/pfs.cc:2198

#18 0x00007a8ee5c9caa4 in start_thread (arg=<optimized out>)at ./nptl/pthread_create.c:447

#19 0x00007a8ee5d29c3c in clone3 ()at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78