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diff --git a/storage/innobase/include/dict0crea.inl b/storage/innobase/include/dict0crea.inl
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+++ b/storage/innobase/include/dict0crea.inl
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+/*****************************************************************************
+
+Copyright (c) 1996, 2016, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2019, MariaDB Corporation.
+
+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 the Free Software
+Foundation; version 2 of the License.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
+
+*****************************************************************************/
+
+/**************************************************//**
+@file include/dict0crea.ic
+Database object creation
+
+Created 1/8/1996 Heikki Tuuri
+*******************************************************/
+
+#include "ha_prototypes.h"
+
+#include "mem0mem.h"
+
+/********************************************************************//**
+Generate a foreign key constraint name when it was not named by the user.
+A generated constraint has a name of the format dbname/tablename_ibfk_NUMBER,
+where the numbers start from 1, and are given locally for this table, that is,
+the number is not global, as it used to be before MySQL 4.0.18.  */
+UNIV_INLINE
+dberr_t
+dict_create_add_foreign_id(
+/*=======================*/
+	ulint*		id_nr,	/*!< in/out: number to use in id generation;
+				incremented if used */
+	const char*	name,	/*!< in: table name */
+	dict_foreign_t*	foreign)/*!< in/out: foreign key */
+{
+	DBUG_ENTER("dict_create_add_foreign_id");
+
+	if (foreign->id == NULL) {
+		/* Generate a new constraint id */
+		ulint	namelen	= strlen(name);
+		char*	id	= static_cast<char*>(
+					mem_heap_alloc(foreign->heap,
+						       namelen + 20));
+
+		if (dict_table_t::is_temporary_name(name)) {
+
+			/* no overflow if number < 1e13 */
+			sprintf(id, "%s_ibfk_%lu", name,
+				(ulong) (*id_nr)++);
+		} else {
+			char	table_name[MAX_TABLE_NAME_LEN + 21];
+			uint	errors = 0;
+
+			strncpy(table_name, name, (sizeof table_name) - 1);
+			table_name[(sizeof table_name) - 1] = '\0';
+
+			innobase_convert_to_system_charset(
+				strchr(table_name, '/') + 1,
+				strchr(name, '/') + 1,
+				MAX_TABLE_NAME_LEN, &errors);
+
+			if (errors) {
+				strncpy(table_name, name,
+					(sizeof table_name) - 1);
+				table_name[(sizeof table_name) - 1] = '\0';
+			}
+
+			/* no overflow if number < 1e13 */
+			sprintf(id, "%s_ibfk_%lu", table_name,
+				(ulong) (*id_nr)++);
+
+			if (innobase_check_identifier_length(
+				strchr(id,'/') + 1)) {
+				DBUG_RETURN(DB_IDENTIFIER_TOO_LONG);
+			}
+		}
+		foreign->id = id;
+
+		DBUG_PRINT("dict_create_add_foreign_id",
+			   ("generated foreign id: %s", id));
+	}
+
+
+	DBUG_RETURN(DB_SUCCESS);
+}
+
+/** Compose a column number for a virtual column, stored in the "POS" field
+of Sys_columns. The column number includes both its virtual column sequence
+(the "nth" virtual column) and its actual column position in original table
+@param[in]	v_pos		virtual column sequence
+@param[in]	col_pos		column position in original table definition
+@return composed column position number */
+UNIV_INLINE
+ulint
+dict_create_v_col_pos(
+	ulint	v_pos,
+	ulint	col_pos)
+{
+	ut_ad(v_pos <= REC_MAX_N_FIELDS);
+	ut_ad(col_pos <= REC_MAX_N_FIELDS);
+
+	return(((v_pos + 1) << 16) + col_pos);
+}
+
+/** Get the column number for a virtual column (the column position in
+original table), stored in the "POS" field of Sys_columns
+@param[in]	pos		virtual column position
+@return column position in original table */
+UNIV_INLINE
+ulint
+dict_get_v_col_mysql_pos(
+	ulint	pos)
+{
+	return(pos & 0xFFFF);
+}
+
+/** Get a virtual column sequence (the "nth" virtual column) for a
+virtual column, stord in the "POS" field of Sys_columns
+@param[in]	pos		virtual column position
+@return virtual column sequence */
+UNIV_INLINE
+ulint
+dict_get_v_col_pos(
+	ulint	pos)
+{
+	return((pos >> 16) - 1);
+}