Hi,

First, I apologize if my English isn't perfect.

After upgrading my MariaDB server from version 10.6.18 to 10.6.19. I 
encountered an issue.
When I execute a "SELECT ... FROM ( SELECT ... ) x WHERE x.colume1 .." 
statement, the server returns the error:
"ERROR 2013 (HY000): Lost connection to server during query." 
I checked the `/var/log/messages` and found this message:
"mariadb.service: Main process exited, code=killed, status=11/SEGV.".

I used core dumping to investigate further and found that the stack frame count 
reaches #12171. 
The error at #0 is "... Item::build_clone ... at 
/usr/src/debug/MariaDB-/src_0/sql/item.h:1928".
The previous stack frames keep repeating two frames:
#1 Item_func_case_simple::do_build_clone ... at 
/usr/src/debug/MariaDB-/src_0/sql/item_cmpfunc.h:2448
#2 ... Item::build_clone ... at /usr/src/debug/MariaDB-/src_0/sql/item.h:1928

My OS is Rocky Linux 8.10. The MariaDB server versions where I encountered this 
issue are 10.6.19 and 10.11.9.
The MariaDB server version without issues is 10.6.18.

Has anyone else encountered this problem?

Thanks in advance for any help.
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