[#MDEV-23543] S3 storage engine: assertion failure on ALTER TABLE

I am not sure if this is supposed to work, but I think it is not supposed to crash the server with failed assertion:

  mysqld: /home/psergey/dev-git/10.5-cl2/sql/protocol.cc:616: void Protocol::end_statement(): Assertion `0' failed.

  Thread 15 "mysqld" received signal SIGABRT, Aborted.

  [Switching to Thread 0x7fffd4cfc700 (LWP 20494)]

  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51

  51	../sysdeps/unix/sysv/linux/raise.c: No such file or directory.

(gdb) wher

  #0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51

  #1  0x00007ffff54978b1 in __GI_abort () at abort.c:79

  #2  0x00007ffff548742a in __assert_fail_base (fmt=0x7ffff560ea38 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x555556bbbca0 "0", file=file@entry=0x555556bbb948 "/home/psergey/dev-git/10.5-cl2/sql/protocol.cc", line=line@entry=616, function=function@entry=0x555556bbc3f0 <Protocol::end_statement()::__PRETTY_FUNCTION__> "void Protocol::end_statement()") at assert.c:92

  #3  0x00007ffff54874a2 in __GI___assert_fail (assertion=0x555556bbbca0 "0", file=0x555556bbb948 "/home/psergey/dev-git/10.5-cl2/sql/protocol.cc", line=616, function=0x555556bbc3f0 <Protocol::end_statement()::__PRETTY_FUNCTION__> "void Protocol::end_statement()") at assert.c:101

  #4  0x0000555555d21ccc in Protocol::end_statement (this=0x7ffea0001340) at /home/psergey/dev-git/10.5-cl2/sql/protocol.cc:616

  #5  0x0000555555e51374 in dispatch_command (command=COM_QUERY, thd=0x7ffea0000d78, packet=0x7ffea0009069 "alter table ten  add b int", packet_length=26, is_com_multi=false, is_next_command=false) at /home/psergey/dev-git/10.5-cl2/sql/sql_parse.cc:2460

  #6  0x0000555555e4da84 in do_command (thd=0x7ffea0000d78) at /home/psergey/dev-git/10.5-cl2/sql/sql_parse.cc:1348

  #7  0x0000555555ff4643 in do_handle_one_connection (connect=0x5555648bade8, put_in_cache=true) at /home/psergey/dev-git/10.5-cl2/sql/sql_connect.cc:1410

  #8  0x0000555555ff43ac in handle_one_connection (arg=0x5555648bade8) at /home/psergey/dev-git/10.5-cl2/sql/sql_connect.cc:1312

  #9  0x0000555556536b27 in pfs_spawn_thread (arg=0x5555646b4278) at /home/psergey/dev-git/10.5-cl2/storage/perfschema/pfs.cc:2201

[MDEV-23543] S3 storage engine: assertion failure on ALTER TABLE Created: 2020-08-23 Updated: 2020-09-22
Status:	Confirmed
Project:	MariaDB Server
Component/s:	Storage Engine - S3
Affects Version/s:	10.5
Fix Version/s:	10.5

[MDEV-23543] S3 storage engine: assertion failure on ALTER TABLE Created: 2020-08-23 Updated: 2020-09-22