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There was a problem with the same scenario before MDEV-25292, see MDEV-29697. But it was a different one, a debug assertion failure in diagnostics area, of which we have many.
In 10.11, it became a specific assertion failure or a non-debug server crash. Due to the latter, technically it is a regression. Still, if the analysis reveals that the underlying cause is the same as in MDEV-29697, please feel free to unset the "Blocker" status and remove the regression label.
CREATE TABLE t (a INT) ENGINE=MyISAM;
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CREATE TABLE tm (a INT) ENGINE=MERGE UNION(t);
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--error ER_UPDATE_TABLE_USED
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CREATE OR REPLACE TABLE t LIKE tm;
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# Cleanup
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DROP TABLE IF EXISTS tm, t;
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10.11 ba875e93 debug
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mariadbd: /data/src/10.11/sql/sql_table.cc:4409: bool HA_CREATE_INFO::finalize_atomic_replace(THD*, TABLE_LIST*): Assertion `is_atomic_replace()' failed.
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221004 13:51:29 [ERROR] mysqld got signal 6 ;
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#7 0x00007fc4d67d3662 in __GI___assert_fail (assertion=0x55ecc713eae0 "is_atomic_replace()", file=0x55ecc713b160 "/data/src/10.11/sql/sql_table.cc", line=4409, function=0x55ecc713eb20 "bool HA_CREATE_INFO::finalize_atomic_replace(THD*, TABLE_LIST*)") at assert.c:101
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#8 0x000055ecc5376322 in HA_CREATE_INFO::finalize_atomic_replace (this=0x7fc4cd4cab80, thd=0x62b00007e218, orig_table=0x6290000e6370) at /data/src/10.11/sql/sql_table.cc:4409
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#9 0x000055ecc5380ebd in mysql_create_like_table (thd=0x62b00007e218, table=0x6290000e6370, src_table=0x6290000e6ac0, create_info=0x7fc4cd4cc810) at /data/src/10.11/sql/sql_table.cc:6004
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#10 0x000055ecc53b39ba in Sql_cmd_create_table_like::execute (this=0x6290000e62e8, thd=0x62b00007e218) at /data/src/10.11/sql/sql_table.cc:12775
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#11 0x000055ecc50bfec4 in mysql_execute_command (thd=0x62b00007e218, is_called_from_prepared_stmt=false) at /data/src/10.11/sql/sql_parse.cc:5997
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#12 0x000055ecc50cd2c0 in mysql_parse (thd=0x62b00007e218, rawbuf=0x6290000e6238 "CREATE OR REPLACE TABLE t LIKE tm", length=33, parser_state=0x7fc4cd4cdab0) at /data/src/10.11/sql/sql_parse.cc:8037
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#13 0x000055ecc50a3922 in dispatch_command (command=COM_QUERY, thd=0x62b00007e218, packet=0x629000253219 "CREATE OR REPLACE TABLE t LIKE tm", packet_length=33, blocking=true) at /data/src/10.11/sql/sql_parse.cc:1894
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#14 0x000055ecc50a06fa in do_command (thd=0x62b00007e218, blocking=true) at /data/src/10.11/sql/sql_parse.cc:1407
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#15 0x000055ecc5547292 in do_handle_one_connection (connect=0x608000002538, put_in_cache=true) at /data/src/10.11/sql/sql_connect.cc:1416
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#16 0x000055ecc5546c28 in handle_one_connection (arg=0x6080000024b8) at /data/src/10.11/sql/sql_connect.cc:1318
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#17 0x000055ecc6120f94 in pfs_spawn_thread (arg=0x617000004d98) at /data/src/10.11/storage/perfschema/pfs.cc:2201
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#18 0x00007fc4d6cafea7 in start_thread (arg=<optimized out>) at pthread_create.c:477
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#19 0x00007fc4d689eaef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
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10.11 ba875e93 non-debug
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#3 <signal handler called>
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#4 0x0000557d413e5542 in check_mysql50_prefix (name=name@entry=0x0) at /data/src/10.11/sql/sql_table.cc:438
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#5 0x0000557d413e558b in check_n_cut_mysql50_prefix (from=0x0, to=0x7f07442d8e20 "o_PP_j", to_length=512) at /data/src/10.11/sql/sql_table.cc:459
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#6 0x0000557d413e55dd in tablename_to_filename (from=0x0, to=0x7f07442d8e20 "o_PP_j", to_length=512) at /data/src/10.11/sql/sql_table.cc:492
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#7 0x0000557d413e591d in build_table_filename (buff=buff@entry=0x7f07442d9500 "", bufflen=bufflen@entry=511, db=<optimized out>, table_name=0x0, ext=ext@entry=0x557d41c91d89 ".TRG", flags=1) at /data/src/10.11/sql/sql_table.cc:563
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#8 0x0000557d4140267d in Table_triggers_list::check_n_load (thd=0x7f0728000c58, db=0x7f07442dc848, table_name=0x7f07442dc858, table=0x7f07442db810, names_only=true, flags=<optimized out>) at /data/src/10.11/sql/sql_trigger.cc:1539
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#9 0x0000557d414035bf in Table_triggers_list::prepare_for_rename (thd=thd@entry=0x7f0728000c58, param=param@entry=0x7f07442db810, db=db@entry=0x7f07442dc848, old_alias=old_alias@entry=0x7f07442dbca0, old_table=old_table@entry=0x7f07442dc858, new_db=new_db@entry=0x7f07442dbc70, new_table=0x7f07442dbcb0) at /data/src/10.11/sql/sql_trigger.cc:2296
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#10 0x0000557d413671c0 in rename_table_and_triggers (thd=thd@entry=0x7f0728000c58, param=param@entry=0x7f07442dbca0, ddl_log_state=ddl_log_state@entry=0x0, ren_table=ren_table@entry=0x7f07442dc848, new_db=new_db@entry=0x7f07442dbc70, skip_error=skip_error@entry=false, force_if_exists=0x7f07442dbc6f) at /data/src/10.11/sql/sql_rename.cc:367
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#11 0x0000557d413ee8d1 in HA_CREATE_INFO::finalize_atomic_replace (this=this@entry=0x7f07442dc610, thd=thd@entry=0x7f0728000c58, orig_table=orig_table@entry=0x7f0728010c20) at /data/src/10.11/sql/sql_table.cc:4481
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#12 0x0000557d413fe20d in mysql_create_like_table (create_info=0x7f07442dc280, src_table=0x7f0728011348, table=<optimized out>, thd=0x7f0728000c58) at /data/src/10.11/sql/sql_table.cc:6004
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#13 Sql_cmd_create_table_like::execute (this=<optimized out>, thd=0x7f0728000c58) at /data/src/10.11/sql/sql_table.cc:12775
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#14 0x0000557d413407a0 in mysql_execute_command (thd=0x7f0728000c58, is_called_from_prepared_stmt=<optimized out>) at /data/src/10.11/sql/sql_parse.cc:5997
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#15 0x0000557d413419c7 in mysql_parse (thd=0x7f0728000c58, rawbuf=<optimized out>, length=<optimized out>, parser_state=<optimized out>) at /data/src/10.11/sql/sql_parse.cc:8037
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#16 0x0000557d413442bd in dispatch_command (command=COM_QUERY, thd=0x7f0728000c58, packet=<optimized out>, packet_length=<optimized out>, blocking=<optimized out>) at /data/src/10.11/sql/sql_class.h:243
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#17 0x0000557d41345f98 in do_command (thd=0x7f0728000c58, blocking=blocking@entry=true) at /data/src/10.11/sql/sql_parse.cc:1407
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#18 0x0000557d41463f0f in do_handle_one_connection (connect=<optimized out>, put_in_cache=true) at /data/src/10.11/sql/sql_connect.cc:1416
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#19 0x0000557d4146425d in handle_one_connection (arg=arg@entry=0x557d4486c598) at /data/src/10.11/sql/sql_connect.cc:1318
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#20 0x0000557d417d4452 in pfs_spawn_thread (arg=0x557d44825438) at /data/src/10.11/storage/perfschema/pfs.cc:2201
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#21 0x00007f0748e6dea7 in start_thread (arg=<optimized out>) at pthread_create.c:477
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#22 0x00007f0748a74aef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
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