json_merge_patch crashes in report_json_error_ex

Version: '10.5.0-MariaDB'  MariaDB Server

Thread 26 "mysqld" received signal SIGSEGV, Segmentation fault.

[Switching to Thread 0x7ffff44af700 (LWP 22446)]

report_json_error_ex at ./sql/item_jsonfunc.cc:258

258	in ./sql/item_jsonfunc.cc

(gdb) bt

#0  in report_json_error_ex at ./sql/item_jsonfunc.cc:258

#1  in Item_func_json_merge_patch::val_str at ./sql/item_jsonfunc.cc:2460

#2  in Type_handler::Item_send_str at ./sql/sql_type.cc:7138

#3  in Protocol::send_result_set_row at ./sql/protocol.cc:1035

#4  in select_send::send_data at ./sql/sql_class.cc:3021

#5  in JOIN::exec_inner at ./sql/sql_select.cc:4259

#6  in JOIN::exec at ./sql/sql_select.cc:4172

#7  in mysql_select at ./sql/sql_select.cc:4596

#8  in handle_select at ./sql/sql_select.cc:428

#9  in execute_sqlcom_select at ./sql/sql_parse.cc:6217

#10 in mysql_execute_command at ./sql/sql_parse.cc:3905

#11 in mysql_parse at ./sql/sql_parse.cc:7986

#12 in dispatch_command at ./sql/sql_parse.cc:1846

#13 in do_command at ./sql/sql_parse.cc:1364

#14 in do_handle_one_connection at ./sql/sql_connect.cc:1422

#15 in handle_one_connection at ./sql/sql_connect.cc:1319

#16 in start_thread at pthread_create.c:479