Merge 10.3 into 10.4

42 files changed, 479 insertions, 183 deletions

diff --git a/client/mysql.cc b/client/mysql.cc
index a643513d4cd..3cae7241969 100644
--- a/client/mysql.cc
+++ b/client/mysql.cc
@@ -1287,8 +1287,8 @@ sig_handler mysql_end(int sig)
 {
 #ifndef _WIN32
   /*
-    Ingnoring SIGQUIT and SIGINT signals when cleanup process starts.
-    This will help in resolving the double free issues, which occures in case
+    Ignoring SIGQUIT and SIGINT signals when cleanup process starts.
+    This will help in resolving the double free issues, which occurs in case
     the signal handler function is started in between the clean up function.
   */
   signal(SIGQUIT, SIG_IGN);
@@ -4714,7 +4714,7 @@ sql_real_connect(char *host,char *database,char *user,char *password,
   /*
     CLIENT_PROGRESS_OBSOLETE is set only if we requested it in
     mysql_real_connect() and the server also supports it
-  */
+*/
   if (mysql.client_flag & CLIENT_PROGRESS_OBSOLETE)
     mysql_options(&mysql, MYSQL_PROGRESS_CALLBACK, (void*) report_progress);
 #else
@@ -4783,7 +4783,7 @@ com_status(String *buffer __attribute__((unused)),
   tee_fprintf(stdout, "\nConnection id:\t\t%lu\n",mysql_thread_id(&mysql));
   /*
     Don't remove "limit 1",
-    it is protection againts SQL_SELECT_LIMIT=0
+    it is protection against SQL_SELECT_LIMIT=0
   */
   if (!mysql_store_result_for_lazy(&result))
   {
@@ -5132,7 +5132,7 @@ static const char *construct_prompt()
   time_t  lclock = time(NULL);			// Get the date struct
   struct tm *t = localtime(&lclock);
 
-  /* parse thru the settings for the prompt */
+  /* parse through the settings for the prompt */
   for (char *c = current_prompt; *c ; c++)
   {
     if (*c != PROMPT_CHAR)
diff --git a/client/mysql_plugin.c b/client/mysql_plugin.c
index 8e5897b4b86..7f2d806413c 100644
--- a/client/mysql_plugin.c
+++ b/client/mysql_plugin.c
@@ -1025,7 +1025,7 @@ static int find_plugin(char *tp_path)
 
 
 /**
-  Build the boostrap file.
+  Build the bootstrap file.
   
   Create a new file and populate it with SQL commands to ENABLE or DISABLE
   the plugin via REPLACE and DELETE operations on the mysql.plugin table.
@@ -1154,7 +1154,7 @@ exit:
   
   Create a command line sequence to launch mysqld in bootstrap mode. This
   will allow mysqld to launch a minimal server instance to read and
-  execute SQL commands from a file piped in (the boostrap file). We use
+  execute SQL commands from a file piped in (the bootstrap file). We use
   the --no-defaults option to skip reading values from the config file.
 
   The bootstrap mode skips loading of plugins and many other subsystems.
diff --git a/client/mysqlbinlog.cc b/client/mysqlbinlog.cc
index a291d82a134..f8c27e3be5b 100644
--- a/client/mysqlbinlog.cc
+++ b/client/mysqlbinlog.cc
@@ -746,7 +746,7 @@ static bool shall_skip_database(const char *log_dbname)
 /**
   Print "use <db>" statement when current db is to be changed.
 
-  We have to control emiting USE statements according to rewrite-db options.
+  We have to control emitting USE statements according to rewrite-db options.
   We have to do it here (see process_event() below) and to suppress
   producing USE statements by corresponding log event print-functions.
 */
@@ -778,7 +778,7 @@ print_use_stmt(PRINT_EVENT_INFO* pinfo, const Query_log_event *ev)
   // In case of rewrite rule print USE statement for db_to
   my_fprintf(result_file, "use %`s%s\n", db_to, pinfo->delimiter);
 
-  // Copy the *original* db to pinfo to suppress emiting
+  // Copy the *original* db to pinfo to suppress emitting
   // of USE stmts by log_event print-functions.
   memcpy(pinfo->db, db, db_len + 1);
 }
diff --git a/client/mysqldump.c b/client/mysqldump.c
index 5b5646d88c6..0a45b444023 100644
--- a/client/mysqldump.c
+++ b/client/mysqldump.c
@@ -145,7 +145,7 @@ static char * opt_mysql_unix_port=0;
 static int   first_error=0;
 /*
   multi_source is 0 if old server or 2 if server that support multi source 
-  This is choosen this was as multi_source has 2 extra columns first in
+  This is chosen this was as multi_source has 2 extra columns first in
   SHOW ALL SLAVES STATUS.
 */
 static uint multi_source= 0;
@@ -2065,7 +2065,7 @@ static void print_xml_tag(FILE * xml_file, const char* sbeg,
       <stag_atr="sval" xsi:nil="true"/>
   NOTE
     sval MUST be a NULL terminated string.
-    sval string will be qouted before output.
+    sval string will be quoted before output.
 */
 
 static void print_xml_null_tag(FILE * xml_file, const char* sbeg,
@@ -2137,7 +2137,7 @@ static void print_xml_cdata(FILE *xml_file, const char *str, ulong len)
     Print tag with many attribute to the xml_file. Format is:
       \t\t<row_name Atr1="Val1" Atr2="Val2"... />
   NOTE
-    All atributes and values will be quoted before output.
+    All attributes and values will be quoted before output.
 */
 
 static void print_xml_row(FILE *xml_file, const char *row_name,
@@ -2617,7 +2617,7 @@ static uint dump_routines_for_db(char *db)
             print_comment(sql_file, 1,
                           "-- does %s have permissions on mysql.proc?\n\n",
                           fix_for_comment(current_user));
-            maybe_die(EX_MYSQLERR,"%s has insufficent privileges to %s!",
+            maybe_die(EX_MYSQLERR,"%s has insufficient privileges to %s!",
                       current_user, query_buff);
           }
           else if (strlen(row[2]))
@@ -4144,7 +4144,7 @@ static void dump_table(char *table, char *db, const uchar *hash_key, size_t len)
       }
     }
 
-    /* XML - close table tag and supress regular output */
+    /* XML - close table tag and suppress regular output */
     if (opt_xml)
         fputs("\t</table_data>\n", md_result_file);
     else if (extended_insert && row_break)
diff --git a/client/mysqlimport.c b/client/mysqlimport.c
index 67dc11d7117..e72eb12cb99 100644
--- a/client/mysqlimport.c
+++ b/client/mysqlimport.c
@@ -581,7 +581,7 @@ static char *field_escape(char *to,const char *from,uint length)
     else 
     {
       if (*from == '\'' && !end_backslashes)
-	*to++= *from;      /* We want a dublicate of "'" for MySQL */
+	*to++= *from;      /* We want a duplicate of "'" for MySQL */
       end_backslashes=0;
     }
   }
diff --git a/client/mysqlslap.c b/client/mysqlslap.c
index 473bb12dc11..ed5e20ca18c 100644
--- a/client/mysqlslap.c
+++ b/client/mysqlslap.c
@@ -2283,7 +2283,7 @@ slap_connect(MYSQL *mysql)
                            opt_mysql_unix_port,
                            connect_flags))
     {
-      /* Connect suceeded */
+      /* Connect succeeded */
       connect_error= 0;
       break;
     }
diff --git a/client/mysqltest.cc b/client/mysqltest.cc
index 40c0a4ae3fe..84a3875f308 100644
--- a/client/mysqltest.cc
+++ b/client/mysqltest.cc
@@ -146,7 +146,7 @@ struct property {
   my_bool *var;			/* Actual variable */
   my_bool set;			/* Has been set for ONE command */
   my_bool old;			/* If set, thus is the old value */
-  my_bool reverse;		/* Varible is true if disabled */
+  my_bool reverse;		/* Variable is true if disabled */
   const char *env_name;		/* Env. variable name */
 };
 
@@ -566,7 +566,7 @@ DYNAMIC_ARRAY regex_arr; /* stores a list of st_regex subsitutions */
 Temporary storage areas for substitutions. To reduce unnessary copying
 and memory freeing/allocation, we pre-allocate two buffers, and alternate
 their use, one for input/one for output, the roles changing on the next
-st_regex substition. At the end of substitutions  buf points to the
+st_regex substitution. At the end of substitutions  buf points to the
 one containing the final result.
 */
 char* buf;
@@ -3095,7 +3095,7 @@ void open_file(const char *name)
       strxnmov(buff, sizeof(buff), opt_overlay_dir, suffix, name, NullS);
 
       /*
-        Overlayed rty/include/thing.inc can contain the line
+        Overlaid rty/include/thing.inc can contain the line
         --source thing.inc
         which would mean to include qwe/include/thing.inc.
         But it looks like including "itself", so don't try to open the file,
@@ -4803,7 +4803,7 @@ int do_save_master_pos()
 	mysql_errno(mysql), mysql_error(mysql));
 
   if (!(res = mysql_store_result(mysql)))
-    die("mysql_store_result() retuned NULL for '%s'", query);
+    die("mysql_store_result() returned NULL for '%s'", query);
   if (!(row = mysql_fetch_row(res)))
     die("empty result in show master status");
   strnmov(master_pos.file, row[0], sizeof(master_pos.file)-1);
@@ -5350,7 +5350,7 @@ void do_get_errcodes(struct st_command *command)
         p++;
       }
 
-      /* Convert the sting to int */
+      /* Convert the string to int */
       if (!str2int(start, 10, (long) INT_MIN, (long) INT_MAX, &val))
 	die("Invalid argument to error: '%s'", command->first_argument);
 
@@ -5742,7 +5742,7 @@ int connect_n_handle_errors(struct st_command *command,
     dynstr_append_mem(ds, delimiter, delimiter_length);
     dynstr_append_mem(ds, "\n", 1);
   }
-  /* Simlified logging if enabled */
+  /* Simplified logging if enabled */
   if (!disable_connect_log && !disable_query_log)
   {
     replace_dynstr_append(ds, command->query);
@@ -8174,7 +8174,7 @@ void handle_no_error(struct st_command *command)
   SYNPOSIS
   run_query_stmt
   mysql - mysql handle
-  command - currrent command pointer
+  command - current command pointer
   query - query string to execute
   query_len - length query string to execute
   ds - output buffer where to store result form query
@@ -8414,7 +8414,7 @@ end:
 /*
   Create a util connection if one does not already exists
   and use that to run the query
-  This is done to avoid implict commit when creating/dropping objects such
+  This is done to avoid implicit commit when creating/dropping objects such
   as view, sp etc.
 */
 
@@ -8455,7 +8455,7 @@ int util_query(MYSQL* org_mysql, const char* query){
   SYNPOSIS
     run_query()
      mysql	mysql handle
-     command	currrent command pointer
+     command	current command pointer
 
   flags control the phased/stages of query execution to be performed
   if QUERY_SEND_FLAG bit is on, the query will be sent. If QUERY_REAP_FLAG
@@ -10211,7 +10211,7 @@ int multi_reg_replace(struct st_replace_regex* r,char* val)
     if (!reg_replace(&out_buf, buf_len_p, re.pattern, re.replace,
                      in_buf, re.icase))
     {
-      /* if the buffer has been reallocated, make adjustements */
+      /* if the buffer has been reallocated, make adjustments */
       if (save_out_buf != out_buf)
       {
         if (save_out_buf == r->even_buf)
@@ -10478,7 +10478,7 @@ typedef struct st_rep_set {
   uint	found_len;			/* Best match to date */
   int	found_offset;
   uint	table_offset;
-  uint	size_of_bits;			/* For convinience */
+  uint	size_of_bits;			/* For convenience */
 } REP_SET;
 
 typedef struct st_rep_sets {
@@ -10581,7 +10581,7 @@ REPLACE *init_replace(char * *from, char * *to,uint count,
     DBUG_RETURN(0);
   }
   (void) make_new_set(&sets);			/* Set starting set */
-  make_sets_invisible(&sets);			/* Hide previus sets */
+  make_sets_invisible(&sets);			/* Hide previous sets */
   used_sets=-1;
   word_states=make_new_set(&sets);		/* Start of new word */
   start_states=make_new_set(&sets);		/* This is first state */
diff --git a/mysql-test/main/func_gconcat.result b/mysql-test/main/func_gconcat.result
index f99daad4a3e..94c24a63bb5 100644
--- a/mysql-test/main/func_gconcat.result
+++ b/mysql-test/main/func_gconcat.result
@@ -363,8 +363,8 @@ bb,ccc,a,bb,ccc
 BB,CCC,A,BB,CCC
 select group_concat(distinct b) from t1 group by a;
 group_concat(distinct b)
-bb,ccc,a
-BB,CCC,A
+a,bb,ccc
+A,BB,CCC
 select group_concat(b order by b) from t1 group by a;
 group_concat(b order by b)
 a,bb,bb,ccc,ccc
@@ -383,11 +383,11 @@ Warning	1260	Row 2 was cut by GROUP_CONCAT()
 Warning	1260	Row 4 was cut by GROUP_CONCAT()
 select group_concat(distinct b) from t1 group by a;
 group_concat(distinct b)
-bb,c
-BB,C
+a,bb
+A,BB
 Warnings:
-Warning	1260	Row 2 was cut by GROUP_CONCAT()
-Warning	1260	Row 4 was cut by GROUP_CONCAT()
+Warning	1260	Row 3 was cut by GROUP_CONCAT()
+Warning	1260	Row 6 was cut by GROUP_CONCAT()
 select group_concat(b order by b) from t1 group by a;
 group_concat(b order by b)
 a,bb
@@ -413,8 +413,8 @@ bb,ccc,a,bb,ccc,1111111111111111111111111111111111111111111111111111111111111111
 BB,CCC,A,BB,CCC,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001
 select group_concat(distinct b) from t1 group by a;
 group_concat(distinct b)
-bb,ccc,a,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001
-BB,CCC,A,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001
+0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,a,bb,ccc
+0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,A,BB,CCC
 select group_concat(b order by b) from t1 group by a;
 group_concat(b order by b)
 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,a,bb,bb,ccc,ccc
@@ -433,11 +433,11 @@ Warning	1260	Row 7 was cut by GROUP_CONCAT()
 Warning	1260	Row 14 was cut by GROUP_CONCAT()
 select group_concat(distinct b) from t1 group by a;
 group_concat(distinct b)
-bb,ccc,a,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
-BB,CCC,A,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
+0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
+0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
 Warnings:
-Warning	1260	Row 5 was cut by GROUP_CONCAT()
-Warning	1260	Row 10 was cut by GROUP_CONCAT()
+Warning	1260	Row 2 was cut by GROUP_CONCAT()
+Warning	1260	Row 4 was cut by GROUP_CONCAT()
 select group_concat(b order by b) from t1 group by a;
 group_concat(b order by b)
 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
@@ -520,9 +520,9 @@ a	group_concat(b)
 NULL	3,4,2,1,2,7,3,3
 select a, group_concat(distinct b) from t1 group by a with rollup;
 a	group_concat(distinct b)
-1	3,4,2,1
-2	7,3
-NULL	3,4,2,1,7
+1	1,2,3,4
+2	3,7
+NULL	1,2,3,4,7
 select a, group_concat(b order by b) from t1 group by a with rollup;
 a	group_concat(b order by b)
 1	1,2,2,3,4
@@ -745,10 +745,10 @@ CREATE TABLE t1(a TEXT, b CHAR(20));
 INSERT INTO t1 VALUES ("one.1","one.1"),("two.2","two.2"),("one.3","one.3");
 SELECT GROUP_CONCAT(DISTINCT UCASE(a)) FROM t1;
 GROUP_CONCAT(DISTINCT UCASE(a))
-ONE.1,TWO.2,ONE.3
+ONE.1,ONE.3,TWO.2
 SELECT GROUP_CONCAT(DISTINCT UCASE(b)) FROM t1;
 GROUP_CONCAT(DISTINCT UCASE(b))
-ONE.1,TWO.2,ONE.3
+ONE.1,ONE.3,TWO.2
 DROP TABLE t1;
 CREATE TABLE t1( a VARCHAR( 10 ), b INT );
 INSERT INTO t1 VALUES ( repeat( 'a', 10 ), 1), 
@@ -847,7 +847,7 @@ create table t1(a bit(2) not null);
 insert into t1 values (1), (0), (0), (3), (1);
 select group_concat(distinct a) from t1;
 group_concat(distinct a)
-1,0,3
+0,1,3
 select group_concat(distinct a order by a) from t1;
 group_concat(distinct a order by a)
 0,1,3
@@ -860,13 +860,13 @@ insert into t1 values (1, 'a', 0), (0, 'b', 1), (0, 'c', 0), (3, 'd', 1),
 (1, 'e', 1), (3, 'f', 1), (0, 'g', 1);
 select group_concat(distinct a, c) from t1;
 group_concat(distinct a, c)
-10,01,00,31,11
+00,01,10,11,31
 select group_concat(distinct a, c order by a) from t1;
 group_concat(distinct a, c order by a)
 00,01,11,10,31
 select group_concat(distinct a, c) from t1;
 group_concat(distinct a, c)
-10,01,00,31,11
+00,01,10,11,31
 select group_concat(distinct a, c order by a, c) from t1;
 group_concat(distinct a, c order by a, c)
 00,01,10,11,31
@@ -1333,8 +1333,8 @@ select grp,group_concat(c limit 5.5...' at line 1
 select grp,group_concat(distinct c limit 1,10 ) from t1 group by grp;
 grp	group_concat(distinct c limit 1,10 )
 1	c
-2	b
-3	C,D
+2	c
+3	D,E
 select grp,group_concat(c order by a) from t1 group by grp;
 grp	group_concat(c order by a)
 1	b,c
@@ -1370,6 +1370,15 @@ grp	group_concat(c order by c desc limit 2)
 1	c,b
 2	c,b
 3	E,E
+#
+# Empty results for group concat as offset is greater than the rows
+# for a group
+#
+select grp,group_concat(distinct c limit 10,1 ) from t1 group by grp;
+grp	group_concat(distinct c limit 10,1 )
+1	
+2	
+3	
 drop table t1;
 create table t2 (a int, b varchar(10));
 insert into t2 values(1,'a'),(1,'b'),(NULL,'c'),(2,'x'),(2,'y');
diff --git a/mysql-test/main/func_gconcat.test b/mysql-test/main/func_gconcat.test
index a76568bdae3..2ab856e0edd 100644
--- a/mysql-test/main/func_gconcat.test
+++ b/mysql-test/main/func_gconcat.test
@@ -986,6 +986,13 @@ select grp,group_concat(c order by c limit 2) from t1 group by grp;
 select grp,group_concat(c order by c desc) from t1 group by grp;
 select grp,group_concat(c order by c desc limit 2) from t1 group by grp;
 
+--echo #
+--echo # Empty results for group concat as offset is greater than the rows
+--echo # for a group
+--echo #
+
+select grp,group_concat(distinct c limit 10,1 ) from t1 group by grp;
+
 drop table t1;
 
 create table t2 (a int, b varchar(10));
diff --git a/mysql-test/main/func_math.result b/mysql-test/main/func_math.result
index 57425de897c..db5d195f405 100644
--- a/mysql-test/main/func_math.result
+++ b/mysql-test/main/func_math.result
@@ -2251,6 +2251,36 @@ SELECT ROUND( i, 18446744073709551594 ) AS f FROM t1;
 f
 DROP TABLE t1;
 #
+# MDEV-22268 virtual longlong Item_func_div::int_op(): Assertion `0' failed in Item_func_div::int_op
+#
+SET sql_mode='';
+SET @@SESSION.div_precision_increment=0;
+SELECT UTC_TIME / 0;
+UTC_TIME / 0
+NULL
+SELECT TIMESTAMP'2001-01-01 00:00:00'/0;
+TIMESTAMP'2001-01-01 00:00:00'/0
+NULL
+SELECT TIME'00:00:00'/0;
+TIME'00:00:00'/0
+NULL
+CREATE TABLE t1 AS SELECT
+UTC_TIME / 0 AS c1,
+TIMESTAMP'2001-01-01 00:00:00'/0 AS c3,
+TIME'00:00:00'/0 AS c4;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `c1` decimal(7,0) DEFAULT NULL,
+  `c3` decimal(14,0) DEFAULT NULL,
+  `c4` decimal(7,0) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t1;
+SELECT(-0 * MOD((UTC_TIME / -0)MOD (ATAN('<img src_x0=x onerror="javascript:alert(0)">') MOD COT(0)),-0)) MOD (0 DIV 0);
+ERROR 22003: DOUBLE value is out of range in 'cot(0)'
+SET @@SESSION.div_precision_increment=DEFAULT;
+SET sql_mode=DEFAULT;
+#
 # End of 10.3 tests
 #
 #
diff --git a/mysql-test/main/func_math.test b/mysql-test/main/func_math.test
index 651def577ae..14b5734d8cc 100644
--- a/mysql-test/main/func_math.test
+++ b/mysql-test/main/func_math.test
@@ -1111,6 +1111,29 @@ CREATE TABLE t1 (i INT(23));
 SELECT ROUND( i, 18446744073709551594 ) AS f FROM t1;
 DROP TABLE t1;
 
+
+--echo #
+--echo # MDEV-22268 virtual longlong Item_func_div::int_op(): Assertion `0' failed in Item_func_div::int_op
+--echo #
+
+SET sql_mode='';
+SET @@SESSION.div_precision_increment=0;
+SELECT UTC_TIME / 0;
+SELECT TIMESTAMP'2001-01-01 00:00:00'/0;
+SELECT TIME'00:00:00'/0;
+CREATE TABLE t1 AS SELECT
+  UTC_TIME / 0 AS c1,
+  TIMESTAMP'2001-01-01 00:00:00'/0 AS c3,
+  TIME'00:00:00'/0 AS c4;
+SHOW CREATE TABLE t1;
+DROP TABLE t1;
+
+--error ER_DATA_OUT_OF_RANGE
+SELECT(-0 * MOD((UTC_TIME / -0)MOD (ATAN('<img src_x0=x onerror="javascript:alert(0)">') MOD COT(0)),-0)) MOD (0 DIV 0);
+
+SET @@SESSION.div_precision_increment=DEFAULT;
+SET sql_mode=DEFAULT;
+
 --echo #
 --echo # End of 10.3 tests
 --echo #
diff --git a/mysql-test/main/grant.result b/mysql-test/main/grant.result
index 8a2ea3c26ec..d24f53142d8 100644
--- a/mysql-test/main/grant.result
+++ b/mysql-test/main/grant.result
@@ -2728,7 +2728,20 @@ DROP USER untrusted@localhost;
 DROP DATABASE secret;
 set GLOBAL sql_mode=default;
 #
-# End of 10.1 tests
+# MDEV-22755 CREATE USER leads to indirect SIGABRT in __stack_chk_fail () from fill_schema_user_privileges + *** stack smashing detected *** (on optimized builds)
+#
+SET NAMES utf8;
+SET SQL_MODE='';
+CREATE USER 觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻@localhost;
+SELECT * FROM INFORMATION_SCHEMA.user_privileges WHERE GRANTEE LIKE "'abcdefghijklmnopqrstuvwxyz'%";
+GRANTEE	TABLE_CATALOG	PRIVILEGE_TYPE	IS_GRANTABLE
+SELECT GRANTEE FROM INFORMATION_SCHEMA.user_privileges WHERE GRANTEE LIKE '%觻%';
+GRANTEE
+'觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻'@'localhost'
+DROP USER  觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻@localhost;
+SET SQL_MODE=DEFAULT;
+#
+# Start of 10.2 tests
 #
 #
 # MDEV-10134 Add full support for DEFAULT
diff --git a/mysql-test/main/grant.test b/mysql-test/main/grant.test
index 7dedf820774..147fc42311c 100644
--- a/mysql-test/main/grant.test
+++ b/mysql-test/main/grant.test
@@ -2225,7 +2225,19 @@ set GLOBAL sql_mode=default;
 --source include/wait_until_count_sessions.inc
 
 --echo #
---echo # End of 10.1 tests
+--echo # MDEV-22755 CREATE USER leads to indirect SIGABRT in __stack_chk_fail () from fill_schema_user_privileges + *** stack smashing detected *** (on optimized builds)
+--echo #
+
+SET NAMES utf8;
+SET SQL_MODE='';
+CREATE USER 觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻@localhost;
+SELECT * FROM INFORMATION_SCHEMA.user_privileges WHERE GRANTEE LIKE "'abcdefghijklmnopqrstuvwxyz'%";
+SELECT GRANTEE FROM INFORMATION_SCHEMA.user_privileges WHERE GRANTEE LIKE '%觻%';
+DROP USER  觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻_觻觻觻觻觻觻觻觻觻觻@localhost;
+SET SQL_MODE=DEFAULT;
+
+--echo #
+--echo # Start of 10.2 tests
 --echo #
 
 --echo #
diff --git a/mysql-test/main/index_merge_innodb.result b/mysql-test/main/index_merge_innodb.result
index 5a3e0286121..e72e2c78d98 100644
--- a/mysql-test/main/index_merge_innodb.result
+++ b/mysql-test/main/index_merge_innodb.result
@@ -810,4 +810,30 @@ sum(col1)
 33632261
 drop table t1;
 set optimizer_switch=@tmp_optimizer_switch;
+#
+# MDEV-22728: SIGFPE in Unique::get_cost_calc_buff_size from prepare_search_best_index_intersect
+# on optimized builds
+#
+SET @save_sort_buffer_size=@@sort_buffer_size;
+SET @save_innodb_file_format= @@innodb_file_format;
+SET @save_innodb_large_prefix= @@innodb_large_prefix;
+SET sort_buffer_size=2048;
+CREATE TABLE t1 (
+a VARCHAR(1024) CHARACTER SET UTF8 PRIMARY KEY,
+b INT,
+c INT,
+INDEX (b)
+) ENGINE=InnoDB CHARSET utf8 ROW_FORMAT= DYNAMIC;
+INSERT INTO t1 SELECT seq, seq, seq from seq_1_to_100;
+EXPLAIN SELECT * FROM t1 WHERE a='1' OR b < 5;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	index_merge	PRIMARY,b	b,PRIMARY	5,3074	NULL	5	Using sort_union(b,PRIMARY); Using where
+SELECT * FROM t1 WHERE a='1' OR b < 5;
+a	b	c
+2	2	2
+3	3	3
+4	4	4
+1	1	1
+DROP TABLE t1;
+SET sort_buffer_size= @save_sort_buffer_size;
 disconnect disable_purge;
diff --git a/mysql-test/main/index_merge_innodb.test b/mysql-test/main/index_merge_innodb.test
index fac199b1513..4bdcb17760e 100644
--- a/mysql-test/main/index_merge_innodb.test
+++ b/mysql-test/main/index_merge_innodb.test
@@ -200,4 +200,27 @@ SELECT sum(col1) FROM t1 FORCE INDEX (key1,key2) WHERE  (key1 between 10 and 819
 drop table t1;
 set optimizer_switch=@tmp_optimizer_switch;
 
+--echo #
+--echo # MDEV-22728: SIGFPE in Unique::get_cost_calc_buff_size from prepare_search_best_index_intersect
+--echo # on optimized builds
+--echo #
+
+SET @save_sort_buffer_size=@@sort_buffer_size;
+SET @save_innodb_file_format= @@innodb_file_format;
+SET @save_innodb_large_prefix= @@innodb_large_prefix;
+SET sort_buffer_size=2048;
+
+CREATE TABLE t1 (
+  a VARCHAR(1024) CHARACTER SET UTF8 PRIMARY KEY,
+  b INT,
+  c INT,
+  INDEX (b)
+) ENGINE=InnoDB CHARSET utf8 ROW_FORMAT= DYNAMIC;
+INSERT INTO t1 SELECT seq, seq, seq from seq_1_to_100;
+EXPLAIN SELECT * FROM t1 WHERE a='1' OR b < 5;
+SELECT * FROM t1 WHERE a='1' OR b < 5;
+DROP TABLE t1;
+
+SET sort_buffer_size= @save_sort_buffer_size;
+
 disconnect disable_purge;
diff --git a/mysql-test/main/query_cache.result b/mysql-test/main/query_cache.result
index 4ba2568c3d9..4615c63feb2 100644
--- a/mysql-test/main/query_cache.result
+++ b/mysql-test/main/query_cache.result
@@ -2098,6 +2098,18 @@ drop procedure p1;
 drop table t1;
 set GLOBAL query_cache_size=1355776;
 SET GLOBAL userstat=@save_userstat;
+#
+# MDEV-5924: MariaDB could crash after changing the query_cache size
+#
+SET GLOBAL query_cache_size= 50*1024;
+SET GLOBAL query_cache_type= 1;
+SET query_cache_type= 1;
+CREATE TABLE t1 (pk INT);
+CREATE VIEW v1 AS SELECT * FROM t1;
+SELECT * FROM v1 WHERE pk IN 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+pk
+DROP VIEW v1;
+DROP TABLE t1;
 End of 5.5 tests
 #
 # Bug#12977203: SERVER CRASH ON A DERIVED TABLE WITH QUERY CACHE ENABLED
diff --git a/mysql-test/main/query_cache.test b/mysql-test/main/query_cache.test
index 3bf905d624c..118ebbf1703 100644
--- a/mysql-test/main/query_cache.test
+++ b/mysql-test/main/query_cache.test
@@ -1719,6 +1719,23 @@ drop table t1;
 set GLOBAL query_cache_size=1355776;
 SET GLOBAL userstat=@save_userstat;
 
+--echo #
+--echo # MDEV-5924: MariaDB could crash after changing the query_cache size
+--echo #
+
+SET GLOBAL query_cache_size= 50*1024;
+SET GLOBAL query_cache_type= 1;
+SET query_cache_type= 1;
+
+CREATE TABLE t1 (pk INT);
+CREATE VIEW v1 AS SELECT * FROM t1;
+
+SELECT * FROM v1 WHERE pk IN 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+
+# Cleanup
+DROP VIEW v1;
+DROP TABLE t1;
+
 --echo End of 5.5 tests
 
 --echo #
diff --git a/mysql-test/main/type_date.result b/mysql-test/main/type_date.result
index fbf348c1a2f..616ba0a4529 100644
--- a/mysql-test/main/type_date.result
+++ b/mysql-test/main/type_date.result
@@ -924,6 +924,24 @@ DROP TABLE t1;
 # End of 10.1 tests
 #
 #
+# Start of 10.2 tests
+#
+#
+# MDEV-21619 Server crash or assertion failures in my_datetime_to_str
+#
+CREATE  TABLE t1 (f DATE, KEY(f));
+INSERT INTO t1 VALUES ('2020-01-01'),('2020-01-02');
+EXPLAIN EXTENDED SELECT * FROM t1 WHERE 1995.0000000 BETWEEN f AND '2012-12-12';
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	index	f	f	4	NULL	2	50.00	Using where; Using index
+Warnings:
+Warning	1292	Truncated incorrect datetime value: '1995.0000000'
+Note	1003	select `test`.`t1`.`f` AS `f` from `test`.`t1` where '0000-00-00' between `test`.`t1`.`f` and <cache>('2012-12-12')
+DROP TABLE t1;
+#
+# End of 10.2 tests
+#
+#
 # Start of 10.3 tests
 #
 #
diff --git a/mysql-test/main/type_date.test b/mysql-test/main/type_date.test
index bd874ec51fb..c041295f845 100644
--- a/mysql-test/main/type_date.test
+++ b/mysql-test/main/type_date.test
@@ -635,6 +635,24 @@ DROP TABLE t1;
 --echo #
 
 --echo #
+--echo # Start of 10.2 tests
+--echo #
+
+--echo #
+--echo # MDEV-21619 Server crash or assertion failures in my_datetime_to_str
+--echo #
+
+CREATE  TABLE t1 (f DATE, KEY(f));
+INSERT INTO t1 VALUES ('2020-01-01'),('2020-01-02');
+EXPLAIN EXTENDED SELECT * FROM t1 WHERE 1995.0000000 BETWEEN f AND '2012-12-12';
+DROP TABLE t1;
+
+
+--echo #
+--echo # End of 10.2 tests
+--echo #
+
+--echo #
 --echo # Start of 10.3 tests
 --echo #
 
diff --git a/mysql-test/main/type_datetime.result b/mysql-test/main/type_datetime.result
index b23fa762c73..6dbf7e58d7b 100644
--- a/mysql-test/main/type_datetime.result
+++ b/mysql-test/main/type_datetime.result
@@ -1330,6 +1330,18 @@ a
 2000-10-00 00:00:00
 DROP TABLE t1;
 #
+# MDEV-21619 Server crash or assertion failures in my_datetime_to_str
+#
+CREATE  TABLE t1 (f DATETIME, KEY(f));
+INSERT INTO t1 VALUES ('2020-01-01 00:00:00'),('2020-01-02 00:00:00');
+EXPLAIN EXTENDED SELECT * FROM t1 WHERE 1995.0000000 BETWEEN f AND '2012-12-12';
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	index	f	f	6	NULL	2	50.00	Using where; Using index
+Warnings:
+Warning	1292	Truncated incorrect datetime value: '1995.0000000'
+Note	1003	select `test`.`t1`.`f` AS `f` from `test`.`t1` where '0000-00-00 00:00:00.000000' between `test`.`t1`.`f` and <cache>('2012-12-12')
+DROP TABLE t1;
+#
 # End of 10.2 tests
 #
 #
diff --git a/mysql-test/main/type_datetime.test b/mysql-test/main/type_datetime.test
index e4b18a245f0..c8ad240d817 100644
--- a/mysql-test/main/type_datetime.test
+++ b/mysql-test/main/type_datetime.test
@@ -837,6 +837,15 @@ ALTER TABLE t1 MODIFY a DATETIME;
 SELECT * FROM t1;
 DROP TABLE t1;
 
+--echo #
+--echo # MDEV-21619 Server crash or assertion failures in my_datetime_to_str
+--echo #
+
+CREATE  TABLE t1 (f DATETIME, KEY(f));
+INSERT INTO t1 VALUES ('2020-01-01 00:00:00'),('2020-01-02 00:00:00');
+EXPLAIN EXTENDED SELECT * FROM t1 WHERE 1995.0000000 BETWEEN f AND '2012-12-12';
+DROP TABLE t1;
+
 
 --echo #
 --echo # End of 10.2 tests
diff --git a/mysql-test/main/type_time.result b/mysql-test/main/type_time.result
index 360746bb856..7fdeba07ad2 100644
--- a/mysql-test/main/type_time.result
+++ b/mysql-test/main/type_time.result
@@ -1368,6 +1368,18 @@ CAST(f1() AS TIME)
 00:00:00
 DROP FUNCTION  f1;
 #
+# MDEV-21619 Server crash or assertion failures in my_datetime_to_str
+#
+CREATE TABLE t1 (f TIME, KEY(f));
+INSERT INTO t1 VALUES ('10:10:10'),('20:20:20');
+EXPLAIN EXTENDED SELECT * FROM t1 WHERE 1995.0000000 BETWEEN f AND '23:59:59';
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	index	f	f	4	NULL	2	50.00	Using where; Using index
+Warnings:
+Warning	1292	Truncated incorrect time value: '1995.0000000'
+Note	1003	select `test`.`t1`.`f` AS `f` from `test`.`t1` where '00:00:00.000000' between `test`.`t1`.`f` and <cache>('23:59:59')
+DROP TABLE t1;
+#
 # End of 10.2 tests
 #
 #
diff --git a/mysql-test/main/type_time.test b/mysql-test/main/type_time.test
index 13101f0e29d..521953a5078 100644
--- a/mysql-test/main/type_time.test
+++ b/mysql-test/main/type_time.test
@@ -820,6 +820,15 @@ DROP FUNCTION  f1;
 
 
 --echo #
+--echo # MDEV-21619 Server crash or assertion failures in my_datetime_to_str
+--echo #
+
+CREATE TABLE t1 (f TIME, KEY(f));
+INSERT INTO t1 VALUES ('10:10:10'),('20:20:20');
+EXPLAIN EXTENDED SELECT * FROM t1 WHERE 1995.0000000 BETWEEN f AND '23:59:59';
+DROP TABLE t1;
+
+--echo #
 --echo # End of 10.2 tests
 --echo #
 
diff --git a/mysql-test/suite/innodb/r/innodb_bug34053.result b/mysql-test/suite/innodb/r/innodb_bug34053.result
deleted file mode 100644
index 23c5b0cc2f7..00000000000
--- a/mysql-test/suite/innodb/r/innodb_bug34053.result
+++ /dev/null
@@ -1 +0,0 @@
-SET default_storage_engine=InnoDB;
diff --git a/mysql-test/suite/innodb/r/innodb_force_recovery_rollback.result b/mysql-test/suite/innodb/r/innodb_force_recovery_rollback.result
new file mode 100644
index 00000000000..81fa2448e3d
--- /dev/null
+++ b/mysql-test/suite/innodb/r/innodb_force_recovery_rollback.result
@@ -0,0 +1,18 @@
+FLUSH TABLES;
+#
+# MDEV-21217 innodb_force_recovery=2 may wrongly abort the rollback
+# of recovered transactions
+#
+connect  con0,localhost,root;
+CREATE TABLE t0 (a INT PRIMARY KEY) ENGINE=InnoDB;
+BEGIN;
+INSERT INTO t0 SELECT * FROM seq_1_to_1000;
+connection default;
+SET GLOBAL innodb_flush_log_at_trx_commit=1;
+CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
+# restart: --innodb-force-recovery=2
+disconnect con0;
+connection default;
+SELECT * FROM t0 LOCK IN SHARE MODE;
+a
+DROP TABLE t0,t1;
diff --git a/mysql-test/suite/innodb/t/innodb_bug34053.test b/mysql-test/suite/innodb/t/innodb_bug34053.test
deleted file mode 100644
index d93d5100d81..00000000000
--- a/mysql-test/suite/innodb/t/innodb_bug34053.test
+++ /dev/null
@@ -1,57 +0,0 @@
-#
-# Make sure http://bugs.mysql.com/34053 remains fixed.
-#
-
--- source include/not_embedded.inc
--- source include/have_innodb.inc
-
-SET default_storage_engine=InnoDB;
-
-# we do not really care about what gets printed, we are only
-# interested in getting success or failure according to our
-# expectations
--- disable_query_log
--- disable_result_log
-
-GRANT USAGE ON *.* TO 'shane'@'localhost' IDENTIFIED BY '12345';
-FLUSH PRIVILEGES;
-
--- connect (con1,localhost,shane,12345,)
-
--- connection con1
--- error ER_SPECIFIC_ACCESS_DENIED_ERROR
-SET GLOBAL innodb_status_output=ON;
--- error ER_SPECIFIC_ACCESS_DENIED_ERROR
-SET GLOBAL innodb_status_output_locks=ON;
-
-CREATE TABLE innodb_monitor (a INT) ENGINE=INNODB;
-DROP TABLE innodb_monitor;
-CREATE TABLE innodb_mem_validate (a INT) ENGINE=INNODB;
-DROP TABLE innodb_mem_validate;
-CREATE TABLE innodb_sql (a INT) ENGINE=INNODB;
-DROP TABLE innodb_sql;
-CREATE TABLE innodb_monitorx (a INT) ENGINE=INNODB;
-DROP TABLE innodb_monitorx;
-CREATE TABLE innodb_monito (a INT) ENGINE=INNODB;
-DROP TABLE innodb_monito;
-CREATE TABLE xinnodb_monitor (a INT) ENGINE=INNODB;
-DROP TABLE xinnodb_monitor;
-CREATE TABLE nnodb_monitor (a INT) ENGINE=INNODB;
-DROP TABLE nnodb_monitor;
-
--- connection default
-SET GLOBAL innodb_status_output=ON;
-SET GLOBAL innodb_status_output_locks=ON;
-
--- connection con1
--- error ER_SPECIFIC_ACCESS_DENIED_ERROR
-SET GLOBAL innodb_status_output=OFF;
--- error ER_SPECIFIC_ACCESS_DENIED_ERROR
-SET GLOBAL innodb_status_output_locks=OFF;
-
--- connection default
-SET GLOBAL innodb_status_output=OFF;
-SET GLOBAL innodb_status_output_locks=OFF;
-DROP USER 'shane'@'localhost';
-
--- disconnect con1
diff --git a/mysql-test/suite/innodb/t/innodb_force_recovery_rollback.test b/mysql-test/suite/innodb/t/innodb_force_recovery_rollback.test
new file mode 100644
index 00000000000..ad234eba72e
--- /dev/null
+++ b/mysql-test/suite/innodb/t/innodb_force_recovery_rollback.test
@@ -0,0 +1,34 @@
+--source include/have_innodb.inc
+--source include/have_sequence.inc
+
+# We will kill and restart the server.
+--source include/not_embedded.inc
+FLUSH TABLES;
+
+--echo #
+--echo # MDEV-21217 innodb_force_recovery=2 may wrongly abort the rollback
+--echo # of recovered transactions
+--echo #
+
+connect (con0,localhost,root);
+CREATE TABLE t0 (a INT PRIMARY KEY) ENGINE=InnoDB;
+# Create enough undo log so that the rollback may take enough time.
+BEGIN;
+INSERT INTO t0 SELECT * FROM seq_1_to_1000;
+
+connection default;
+# Persist the above incomplete transaction.
+SET GLOBAL innodb_flush_log_at_trx_commit=1;
+CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
+
+--let $restart_parameters= --innodb-force-recovery=2
+--let $shutdown_timeout=0
+--source include/restart_mysqld.inc
+--let $restart_parameters=
+--let $shutdown_timeout=
+
+disconnect con0;
+connection default;
+# If the rollback was aborted, we would end up in a lock wait here.
+SELECT * FROM t0 LOCK IN SHARE MODE;
+DROP TABLE t0,t1;
diff --git a/plugin/disks/information_schema_disks.cc b/plugin/disks/information_schema_disks.cc
index 9b1b6c0fe69..4c9dbc133e5 100644
--- a/plugin/disks/information_schema_disks.cc
+++ b/plugin/disks/information_schema_disks.cc
@@ -33,9 +33,9 @@ ST_FIELD_INFO disks_table_fields[]=
 {
     { "Disk",      PATH_MAX, MYSQL_TYPE_STRING, 0, 0 ,0, 0 },
     { "Path",      PATH_MAX, MYSQL_TYPE_STRING, 0, 0 ,0, 0 },
-    { "Total",           32, MYSQL_TYPE_LONG,   0, 0 ,0 ,0 }, // Total amount available
-    { "Used",            32, MYSQL_TYPE_LONG,   0, 0 ,0 ,0 }, // Amount of space used
-    { "Available",       32, MYSQL_TYPE_LONG,   0, 0 ,0 ,0 }, // Amount available to users other than root.
+    { "Total",           32, MYSQL_TYPE_LONGLONG,   0, 0 ,0 ,0 }, // Total amount available
+    { "Used",            32, MYSQL_TYPE_LONGLONG,   0, 0 ,0 ,0 }, // Amount of space used
+    { "Available",       32, MYSQL_TYPE_LONGLONG,   0, 0 ,0 ,0 }, // Amount available to users other than root.
     { 0, 0, MYSQL_TYPE_NULL, 0, 0, 0, 0 }
 };
 
@@ -52,9 +52,10 @@ int disks_table_add_row(THD* pThd,
     // f_bfree    Total number of free blocks.
     // f_bavail   Number of free blocks available to non-privileged process.
 
-    size_t total = (info.f_frsize * info.f_blocks) / 1024;
-    size_t used  = (info.f_frsize * (info.f_blocks - info.f_bfree)) / 1024;
-    size_t avail = (info.f_frsize * info.f_bavail) / 1024;
+    ulonglong total = ((ulonglong)info.f_frsize * info.f_blocks) / 1024;
+    ulonglong used  = ((ulonglong)info.f_frsize *
+                            (info.f_blocks - info.f_bfree)) / 1024;
+    ulonglong avail = ((ulonglong)info.f_frsize * info.f_bavail) / 1024;
 
     pTable->field[0]->store(zDisk, strlen(zDisk), system_charset_info);
     pTable->field[1]->store(zPath, strlen(zPath), system_charset_info);
diff --git a/plugin/disks/mysql-test/disks/disks.result b/plugin/disks/mysql-test/disks/disks.result
index 65b1127d479..0b4ee6249aa 100644
--- a/plugin/disks/mysql-test/disks/disks.result
+++ b/plugin/disks/mysql-test/disks/disks.result
@@ -3,9 +3,9 @@ Table	Create Table
 DISKS	CREATE TEMPORARY TABLE `DISKS` (
   `Disk` varchar(4096) NOT NULL DEFAULT '',
   `Path` varchar(4096) NOT NULL DEFAULT '',
-  `Total` int(32) NOT NULL DEFAULT 0,
-  `Used` int(32) NOT NULL DEFAULT 0,
-  `Available` int(32) NOT NULL DEFAULT 0
+  `Total` bigint(32) NOT NULL DEFAULT 0,
+  `Used` bigint(32) NOT NULL DEFAULT 0,
+  `Available` bigint(32) NOT NULL DEFAULT 0
 ) ENGINE=MEMORY DEFAULT CHARSET=utf8
 select sum(Total) > sum(Available), sum(Total)>sum(Used) from information_schema.disks;
 sum(Total) > sum(Available)	sum(Total)>sum(Used)
diff --git a/sql/item.h b/sql/item.h
index 1fa80066f9d..d779e2d6f16 100644
--- a/sql/item.h
+++ b/sql/item.h
@@ -6818,6 +6818,13 @@ public:
   bool cache_value();
   bool get_date(THD *thd, MYSQL_TIME *ltime, date_mode_t fuzzydate);
   int save_in_field(Field *field, bool no_conversions);
+  bool setup(THD *thd, Item *item)
+  {
+    if (Item_cache_int::setup(thd, item))
+      return true;
+    set_if_smaller(decimals, TIME_SECOND_PART_DIGITS);
+    return false;
+  }
   void store_packed(longlong val_arg, Item *example);
   /*
     Having a clone_item method tells optimizer that this object
diff --git a/sql/item_func.h b/sql/item_func.h
index 996a445617b..a8727272adc 100644
--- a/sql/item_func.h
+++ b/sql/item_func.h
@@ -970,11 +970,11 @@ class Item_num_op :public Item_func_numhybrid
     decimals= 0;
     set_handler(type_handler_long_or_longlong());
   }
-  void fix_length_and_dec_temporal()
+  void fix_length_and_dec_temporal(bool downcast_decimal_to_int)
   {
     set_handler(&type_handler_newdecimal);
     fix_length_and_dec_decimal();
-    if (decimals == 0)
+    if (decimals == 0 && downcast_decimal_to_int)
       set_handler(type_handler_long_or_longlong());
   }
   bool need_parentheses_in_default() { return true; }
diff --git a/sql/item_sum.cc b/sql/item_sum.cc
index 3c468c72fa9..88110367b38 100644
--- a/sql/item_sum.cc
+++ b/sql/item_sum.cc
@@ -3628,23 +3628,25 @@ int dump_leaf_key(void* key_arg, element_count count __attribute__((unused)),
   ulonglong *offset_limit= &item->copy_offset_limit;
   ulonglong *row_limit = &item->copy_row_limit;
   if (item->limit_clause && !(*row_limit))
+  {
+    item->result_finalized= true;
     return 1;
-
-  if (item->no_appended)
-    item->no_appended= FALSE;
-  else
-    result->append(*item->separator);
+  }
 
   tmp.length(0);
 
   if (item->limit_clause && (*offset_limit))
   {
     item->row_count++;
-    item->no_appended= TRUE;
     (*offset_limit)--;
     return 0;
   }
 
+  if (!item->result_finalized)
+    item->result_finalized= true;
+  else
+    result->append(*item->separator);
+
   for (; arg < arg_end; arg++)
   {
     String *res;
@@ -3899,7 +3901,7 @@ void Item_func_group_concat::clear()
   result.copy();
   null_value= TRUE;
   warning_for_row= FALSE;
-  no_appended= TRUE;
+  result_finalized= FALSE;
   if (offset_limit)
     copy_offset_limit= offset_limit->val_int();
   if (row_limit)
@@ -4032,13 +4034,12 @@ bool Item_func_group_concat::add()
       return 1;
     tree_len+= row_str_len;
   }
+
   /*
-    If the row is not a duplicate (el->count == 1)
-    we can dump the row here in case of GROUP_CONCAT(DISTINCT...)
-    instead of doing tree traverse later.
+    In case of GROUP_CONCAT with DISTINCT or ORDER BY (or both) don't dump the
+    row to the output buffer here. That will be done in val_str.
   */
-  if (row_eligible && !warning_for_row &&
-      (!tree || (el->count == 1 && distinct && !arg_count_order)))
+  if (row_eligible && !warning_for_row && (!tree && !distinct))
     dump_leaf_key(table->record[0] + table->s->null_bytes, 1, this);
 
   return 0;
@@ -4274,9 +4275,18 @@ String* Item_func_group_concat::val_str(String* str)
   DBUG_ASSERT(fixed == 1);
   if (null_value)
     return 0;
-  if (no_appended && tree)
-    /* Tree is used for sorting as in ORDER BY */
-    tree_walk(tree, &dump_leaf_key, this, left_root_right);
+
+  if (!result_finalized) // Result yet to be written.
+  {
+    if (tree != NULL) // order by
+      tree_walk(tree, &dump_leaf_key, this, left_root_right);
+    else if (distinct) // distinct (and no order by).
+      unique_filter->walk(table, &dump_leaf_key, this);
+    else if (row_limit && copy_row_limit == (ulonglong)row_limit->val_int())
+      return &result;
+    else
+      DBUG_ASSERT(false); // Can't happen
+  }
 
   if (table && table->blob_storage && 
       table->blob_storage->is_truncated_value())
diff --git a/sql/item_sum.h b/sql/item_sum.h
index 7bf8a41f405..7a6fda708a4 100644
--- a/sql/item_sum.h
+++ b/sql/item_sum.h
@@ -1871,7 +1871,8 @@ class Item_func_group_concat : public Item_sum
   bool warning_for_row;
   bool always_null;
   bool force_copy_fields;
-  bool no_appended;
+  /** True if entire result of GROUP_CONCAT has been written to output buffer. */
+  bool result_finalized;
   /** Limits the rows in the result */
   Item *row_limit;
   /** Skips a particular number of rows in from the result*/
diff --git a/sql/log.cc b/sql/log.cc
index b5b5abdfc9e..f6dcbea1210 100644
--- a/sql/log.cc
+++ b/sql/log.cc
@@ -2494,7 +2494,7 @@ static int find_uniq_filename(char *name, ulong min_log_number_to_use,
   char                  buff[FN_REFLEN], ext_buf[FN_REFLEN];
   struct st_my_dir     *dir_info;
   struct fileinfo *file_info;
-  ulong                 max_found, next, UNINIT_VAR(number);
+  ulong                 max_found= 0, next= 0, number= 0;
   size_t		buf_length, length;
   char			*start, *end;
   int                   error= 0;
@@ -2530,7 +2530,7 @@ static int find_uniq_filename(char *name, ulong min_log_number_to_use,
       if (strncmp(file_info->name, start, length) == 0 &&
           test_if_number(file_info->name+length, &number,0))
       {
-        set_if_bigger(max_found,(ulong) number);
+        set_if_bigger(max_found, number);
       }
     }
     my_dirend(dir_info);
diff --git a/sql/sql_acl.cc b/sql/sql_acl.cc
index 12977248429..9ea69e5628b 100644
--- a/sql/sql_acl.cc
+++ b/sql/sql_acl.cc
@@ -11852,7 +11852,7 @@ int wild_case_compare(CHARSET_INFO *cs, const char *str,const char *wildstr)
 
 
 #ifndef NO_EMBEDDED_ACCESS_CHECKS
-static bool update_schema_privilege(THD *thd, TABLE *table, char *buff,
+static bool update_schema_privilege(THD *thd, TABLE *table, const char *buff,
                                     const char* db, const char* t_name,
                                     const char* column, uint col_length,
                                     const char *priv, uint priv_length,
@@ -11876,6 +11876,21 @@ static bool update_schema_privilege(THD *thd, TABLE *table, char *buff,
 #endif
 
 
+#ifndef NO_EMBEDDED_ACCESS_CHECKS
+class Grantee_str
+{
+  char m_buff[USER_HOST_BUFF_SIZE + 6 /* 4 quotes, @, '\0' */];
+public:
+  Grantee_str(const char *user, const char *host)
+  {
+    DBUG_ASSERT(strlen(user) + strlen(host) + 6 < sizeof(m_buff));
+    strxmov(m_buff, "'", user, "'@'", host, "'", NullS);
+  }
+  operator const char *() const { return m_buff; }
+};
+#endif
+
+
 int fill_schema_user_privileges(THD *thd, TABLE_LIST *tables, COND *cond)
 {
 #ifndef NO_EMBEDDED_ACCESS_CHECKS
@@ -11883,7 +11898,6 @@ int fill_schema_user_privileges(THD *thd, TABLE_LIST *tables, COND *cond)
   uint counter;
   ACL_USER *acl_user;
   ulong want_access;
-  char buff[100];
   TABLE *table= tables->table;
   bool no_global_access= check_access(thd, SELECT_ACL, "mysql",
                                       NULL, NULL, 1, 1);
@@ -11908,10 +11922,10 @@ int fill_schema_user_privileges(THD *thd, TABLE_LIST *tables, COND *cond)
     if (!(want_access & GRANT_ACL))
       is_grantable= "NO";
 
-    strxmov(buff,"'",user,"'@'",host,"'",NullS);
+    Grantee_str grantee(user, host);
     if (!(want_access & ~GRANT_ACL))
     {
-      if (update_schema_privilege(thd, table, buff, 0, 0, 0, 0,
+      if (update_schema_privilege(thd, table, grantee, 0, 0, 0, 0,
                                   STRING_WITH_LEN("USAGE"), is_grantable))
       {
         error= 1;
@@ -11926,7 +11940,7 @@ int fill_schema_user_privileges(THD *thd, TABLE_LIST *tables, COND *cond)
       {
         if (test_access & j)
         {
-          if (update_schema_privilege(thd, table, buff, 0, 0, 0, 0,
+          if (update_schema_privilege(thd, table, grantee, 0, 0, 0, 0,
                                       command_array[priv_id],
                                       command_lengths[priv_id], is_grantable))
           {
@@ -11954,7 +11968,6 @@ int fill_schema_schema_privileges(THD *thd, TABLE_LIST *tables, COND *cond)
   uint counter;
   ACL_DB *acl_db;
   ulong want_access;
-  char buff[100];
   TABLE *table= tables->table;
   bool no_global_access= check_access(thd, SELECT_ACL, "mysql",
                                       NULL, NULL, 1, 1);
@@ -11983,10 +11996,10 @@ int fill_schema_schema_privileges(THD *thd, TABLE_LIST *tables, COND *cond)
       {
         is_grantable= "NO";
       }
-      strxmov(buff,"'",user,"'@'",host,"'",NullS);
+      Grantee_str grantee(user, host);
       if (!(want_access & ~GRANT_ACL))
       {
-        if (update_schema_privilege(thd, table, buff, acl_db->db, 0, 0,
+        if (update_schema_privilege(thd, table, grantee, acl_db->db, 0, 0,
                                     0, STRING_WITH_LEN("USAGE"), is_grantable))
         {
           error= 1;
@@ -12000,7 +12013,8 @@ int fill_schema_schema_privileges(THD *thd, TABLE_LIST *tables, COND *cond)
         for (cnt=0, j = SELECT_ACL; j <= DB_ACLS; cnt++,j <<= 1)
           if (test_access & j)
           {
-            if (update_schema_privilege(thd, table, buff, acl_db->db, 0, 0, 0,
+            if (update_schema_privilege(thd, table,
+                                        grantee, acl_db->db, 0, 0, 0,
                                         command_array[cnt], command_lengths[cnt],
                                         is_grantable))
             {
@@ -12026,7 +12040,6 @@ int fill_schema_table_privileges(THD *thd, TABLE_LIST *tables, COND *cond)
 #ifndef NO_EMBEDDED_ACCESS_CHECKS
   int error= 0;
   uint index;
-  char buff[100];
   TABLE *table= tables->table;
   bool no_global_access= check_access(thd, SELECT_ACL, "mysql",
                                       NULL, NULL, 1, 1);
@@ -12059,10 +12072,11 @@ int fill_schema_table_privileges(THD *thd, TABLE_LIST *tables, COND *cond)
       if (!(table_access & GRANT_ACL))
         is_grantable= "NO";
 
-      strxmov(buff, "'", user, "'@'", host, "'", NullS);
+      Grantee_str grantee(user, host);
       if (!test_access)
       {
-        if (update_schema_privilege(thd, table, buff, grant_table->db,
+        if (update_schema_privilege(thd, table,
+                                    grantee, grant_table->db,
                                     grant_table->tname, 0, 0,
                                     STRING_WITH_LEN("USAGE"), is_grantable))
         {
@@ -12078,7 +12092,8 @@ int fill_schema_table_privileges(THD *thd, TABLE_LIST *tables, COND *cond)
         {
           if (test_access & j)
           {
-            if (update_schema_privilege(thd, table, buff, grant_table->db,
+            if (update_schema_privilege(thd, table,
+                                        grantee, grant_table->db,
                                         grant_table->tname, 0, 0,
                                         command_array[cnt],
                                         command_lengths[cnt], is_grantable))
@@ -12106,7 +12121,6 @@ int fill_schema_column_privileges(THD *thd, TABLE_LIST *tables, COND *cond)
 #ifndef NO_EMBEDDED_ACCESS_CHECKS
   int error= 0;
   uint index;
-  char buff[100];
   TABLE *table= tables->table;
   bool no_global_access= check_access(thd, SELECT_ACL, "mysql",
                                       NULL, NULL, 1, 1);
@@ -12133,7 +12147,7 @@ int fill_schema_column_privileges(THD *thd, TABLE_LIST *tables, COND *cond)
         is_grantable= "NO";
 
       ulong test_access= table_access & ~GRANT_ACL;
-      strxmov(buff, "'", user, "'@'", host, "'", NullS);
+      Grantee_str grantee(user, host);
       if (!test_access)
         continue;
       else
@@ -12152,7 +12166,9 @@ int fill_schema_column_privileges(THD *thd, TABLE_LIST *tables, COND *cond)
                 my_hash_element(&grant_table->hash_columns,col_index);
               if ((grant_column->rights & j) && (table_access & j))
               {
-                if (update_schema_privilege(thd, table, buff, grant_table->db,
+                if (update_schema_privilege(thd, table,
+                                            grantee,
+                                            grant_table->db,
                                             grant_table->tname,
                                             grant_column->column,
                                             grant_column->key_length,
diff --git a/sql/sql_cache.cc b/sql/sql_cache.cc
index 5b649b739c6..0ba4732b6cd 100644
--- a/sql/sql_cache.cc
+++ b/sql/sql_cache.cc
@@ -3412,7 +3412,7 @@ Query_cache::register_tables_from_list(THD *thd, TABLE_LIST *tables_used,
       if (!insert_table(thd, key_length, key, (*block_table),
                         tables_used->view_db.length, 0,
                         HA_CACHE_TBL_NONTRANSACT, 0, 0, TRUE))
-        DBUG_RETURN(0);
+      goto err_cleanup;
       /*
         We do not need to register view tables here because they are already
         present in the global list.
@@ -3436,7 +3436,7 @@ Query_cache::register_tables_from_list(THD *thd, TABLE_LIST *tables_used,
                         tables_used->callback_func,
                         tables_used->engine_data,
                         TRUE))
-        DBUG_RETURN(0);
+      goto err_cleanup;
 
       if (tables_used->table->file->
           register_query_cache_dependant_tables(thd, this, block_table, &n))
@@ -3444,6 +3444,11 @@ Query_cache::register_tables_from_list(THD *thd, TABLE_LIST *tables_used,
     }
   }
   DBUG_RETURN(n - counter);
+err_cleanup:
+  // Mark failed
+  (*block_table)->next= (*block_table)->prev= NULL;
+  (*block_table)->parent= NULL;
+  DBUG_RETURN(0);
 }
 
 /*
@@ -3477,7 +3482,12 @@ my_bool Query_cache::register_all_tables(THD *thd,
     for (Query_cache_block_table *tmp = block->table(0) ;
 	 tmp != block_table;
 	 tmp++)
-      unlink_table(tmp);
+    {
+      if (tmp->prev) // not marked as failed and unuseable
+        unlink_table(tmp);
+      else
+        break;
+    }
     if (block_table->parent)
       unlink_table(block_table);
   }
diff --git a/sql/sql_type.cc b/sql/sql_type.cc
index f1f6ecfb046..b5711f6b41c 100644
--- a/sql/sql_type.cc
+++ b/sql/sql_type.cc
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2015,2019 MariaDB
+   Copyright (c) 2015, 2020, MariaDB
 
  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
@@ -6147,7 +6147,7 @@ bool Type_handler_decimal_result::
 bool Type_handler_temporal_result::
        Item_func_plus_fix_length_and_dec(Item_func_plus *item) const
 {
-  item->fix_length_and_dec_temporal();
+  item->fix_length_and_dec_temporal(true);
   return false;
 }
 
@@ -6196,7 +6196,7 @@ bool Type_handler_decimal_result::
 bool Type_handler_temporal_result::
        Item_func_minus_fix_length_and_dec(Item_func_minus *item) const
 {
-  item->fix_length_and_dec_temporal();
+  item->fix_length_and_dec_temporal(true);
   return false;
 }
 
@@ -6245,7 +6245,7 @@ bool Type_handler_decimal_result::
 bool Type_handler_temporal_result::
        Item_func_mul_fix_length_and_dec(Item_func_mul *item) const
 {
-  item->fix_length_and_dec_temporal();
+  item->fix_length_and_dec_temporal(true);
   return false;
 }
 
@@ -6294,7 +6294,7 @@ bool Type_handler_decimal_result::
 bool Type_handler_temporal_result::
        Item_func_div_fix_length_and_dec(Item_func_div *item) const
 {
-  item->fix_length_and_dec_temporal();
+  item->fix_length_and_dec_temporal(false);
   return false;
 }
 
@@ -6343,7 +6343,7 @@ bool Type_handler_decimal_result::
 bool Type_handler_temporal_result::
        Item_func_mod_fix_length_and_dec(Item_func_mod *item) const
 {
-  item->fix_length_and_dec_temporal();
+  item->fix_length_and_dec_temporal(true);
   return false;
 }
 
diff --git a/sql/uniques.cc b/sql/uniques.cc
index fafb44b56a0..1b8e91f2566 100644
--- a/sql/uniques.cc
+++ b/sql/uniques.cc
@@ -318,6 +318,9 @@ double Unique::get_use_cost(uint *buffer, size_t nkeys, uint key_size,
   max_elements_in_tree= ((size_t) max_in_memory_size /
                          ALIGN_SIZE(sizeof(TREE_ELEMENT)+key_size));
 
+  if (max_elements_in_tree == 0)
+    max_elements_in_tree= 1;
+
   n_full_trees=    nkeys / max_elements_in_tree;
   last_tree_elems= nkeys % max_elements_in_tree;
 
@@ -786,7 +789,12 @@ bool Unique::get(TABLE *table)
   /* Not enough memory; Save the result to file && free memory used by tree */
   if (flush())
     DBUG_RETURN(1);
-  size_t buff_sz= (max_in_memory_size / full_size + 1) * full_size;
+  /*
+    merge_buffer must fit at least MERGEBUFF2 + 1 keys, because
+    merge_index() can merge that many BUFFPEKs at once. The extra space for
+    one key for Sort_param::unique_buff
+  */
+  size_t buff_sz= MY_MAX(MERGEBUFF2+1, max_in_memory_size/full_size+1) * full_size;
   if (!(sort_buffer= (uchar*) my_malloc(buff_sz,
                                         MYF(MY_THREAD_SPECIFIC|MY_WME))))
     DBUG_RETURN(1);
diff --git a/sql/uniques.h b/sql/uniques.h
index 7cdf6607dd0..a4f5b378fb0 100644
--- a/sql/uniques.h
+++ b/sql/uniques.h
@@ -85,6 +85,9 @@ public:
   {
     size_t max_elems_in_tree=
       max_in_memory_size / ALIGN_SIZE(sizeof(TREE_ELEMENT)+key_size);
+
+    if (max_elems_in_tree == 0)
+      max_elems_in_tree= 1;
     return (int) (sizeof(uint)*(1 + nkeys/max_elems_in_tree));
   }
 
diff --git a/storage/innobase/dict/dict0load.cc b/storage/innobase/dict/dict0load.cc
index 78844680de6..18d67ac2f0b 100644
--- a/storage/innobase/dict/dict0load.cc
+++ b/storage/innobase/dict/dict0load.cc
@@ -1536,7 +1536,7 @@ dict_load_column_low(
 	ulint		pos;
 	ulint		num_base;
 
-	ut_ad(table || column);
+	ut_ad(!table == !!column);
 
 	if (rec_get_deleted_flag(rec, 0)) {
 		return(dict_load_column_del);
@@ -1643,7 +1643,7 @@ err_len:
 	}
 	num_base = mach_read_from_4(field);
 
-	if (column == NULL) {
+	if (table) {
 		if (prtype & DATA_VIRTUAL) {
 #ifdef UNIV_DEBUG
 			dict_v_col_t*	vcol =
diff --git a/storage/innobase/row/row0undo.cc b/storage/innobase/row/row0undo.cc
index 297b0f6f90c..a07258910b4 100644
--- a/storage/innobase/row/row0undo.cc
+++ b/storage/innobase/row/row0undo.cc
@@ -485,7 +485,7 @@ row_undo_step(
 
 	if (UNIV_UNLIKELY(trx_get_dict_operation(trx) == TRX_DICT_OP_NONE
 			  && !srv_undo_sources
-			  && !srv_is_being_started)
+			  && srv_shutdown_state != SRV_SHUTDOWN_NONE)
 	    && (srv_fast_shutdown == 3 || trx == trx_roll_crash_recv_trx)) {
 		/* Shutdown has been initiated. */
 		trx->error_state = DB_INTERRUPTED;
diff --git a/strings/ctype-utf8.c b/strings/ctype-utf8.c
index 01c549a7eaa..e579d7b2bc6 100644
--- a/strings/ctype-utf8.c
+++ b/strings/ctype-utf8.c
@@ -4968,8 +4968,8 @@ static size_t my_caseup_utf8(CHARSET_INFO *cs, const char *src, size_t srclen,
 }
 
 
-static void my_hash_sort_utf8_nopad(CHARSET_INFO *cs, const uchar *s, size_t slen,
-                                    ulong *nr1, ulong *nr2)
+static void my_hash_sort_utf8mb3_nopad(CHARSET_INFO *cs, const uchar *s, size_t slen,
+                                       ulong *nr1, ulong *nr2)
 {
   my_wc_t wc;
   int res;
@@ -4988,17 +4988,15 @@ static void my_hash_sort_utf8_nopad(CHARSET_INFO *cs, const uchar *s, size_t sle
 }
 
 
-static void my_hash_sort_utf8(CHARSET_INFO *cs, const uchar *s, size_t slen,
-                              ulong *nr1, ulong *nr2)
+static void my_hash_sort_utf8mb3(CHARSET_INFO *cs, const uchar *s, size_t slen,
+                                 ulong *nr1, ulong *nr2)
 {
-  const uchar *e= s+slen;
   /*
     Remove end space. We have to do this to be able to compare
     'A ' and 'A' as identical
   */
-  while (e > s && e[-1] == ' ')
-    e--;
-  my_hash_sort_utf8_nopad(cs, s, e - s, nr1, nr2);
+  const uchar *e= skip_trailing_space(s, slen);
+  my_hash_sort_utf8mb3_nopad(cs, s, e - s, nr1, nr2);
 }
 
 
@@ -5365,7 +5363,7 @@ static MY_COLLATION_HANDLER my_collation_utf8_general_ci_handler =
     my_wildcmp_utf8,
     my_strcasecmp_utf8,
     my_instr_mb,
-    my_hash_sort_utf8,
+    my_hash_sort_utf8mb3,
     my_propagate_complex
 };
 
@@ -5381,7 +5379,7 @@ static MY_COLLATION_HANDLER my_collation_utf8_general_mysql500_ci_handler =
     my_wildcmp_utf8,
     my_strcasecmp_utf8,
     my_instr_mb,
-    my_hash_sort_utf8,
+    my_hash_sort_utf8mb3,
     my_propagate_complex
 };
 
@@ -5413,7 +5411,7 @@ static MY_COLLATION_HANDLER my_collation_utf8_general_nopad_ci_handler =
   my_wildcmp_utf8,
   my_strcasecmp_utf8,
   my_instr_mb,
-  my_hash_sort_utf8_nopad,
+  my_hash_sort_utf8mb3_nopad,
   my_propagate_complex
 };
 
@@ -7066,7 +7064,7 @@ static MY_COLLATION_HANDLER my_collation_filename_handler =
     my_wildcmp_utf8,
     my_strcasecmp_utf8,
     my_instr_mb,
-    my_hash_sort_utf8,
+    my_hash_sort_utf8mb3,
     my_propagate_complex
 };
 
@@ -7422,13 +7420,11 @@ static void
 my_hash_sort_utf8mb4(CHARSET_INFO *cs, const uchar *s, size_t slen,
                      ulong *nr1, ulong *nr2)
 {
-  const uchar *e= s + slen;
   /*
     Remove end space. We do this to be able to compare
     'A ' and 'A' as identical
   */
-  while (e > s && e[-1] == ' ')
-    e--;
+  const uchar *e= skip_trailing_space(s, slen);
   my_hash_sort_utf8mb4_nopad(cs, s, e - s, nr1, nr2);
 }