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diff --git a/storage/innobase/ut/ut0mem.cc b/storage/innobase/ut/ut0mem.cc
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+/*****************************************************************************
+
+Copyright (c) 1994, 2016, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2019, 2020, 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 ut/ut0mem.cc
+Memory primitives
+
+Created 5/11/1994 Heikki Tuuri
+*************************************************************************/
+
+#include "ut0mem.h"
+#include "ut0new.h"
+
+/********************************************************************
+Concatenate 3 strings.*/
+char*
+ut_str3cat(
+/*=======*/
+				/* out, own: concatenated string, must be
+				freed with ut_free() */
+	const char*	s1,	/* in: string 1 */
+	const char*	s2,	/* in: string 2 */
+	const char*	s3)	/* in: string 3 */
+{
+	char*	s;
+	ulint	s1_len = strlen(s1);
+	ulint	s2_len = strlen(s2);
+	ulint	s3_len = strlen(s3);
+
+	s = static_cast<char*>(ut_malloc_nokey(s1_len + s2_len + s3_len + 1));
+
+	memcpy(s, s1, s1_len);
+	memcpy(s + s1_len, s2, s2_len);
+	memcpy(s + s1_len + s2_len, s3, s3_len);
+
+	s[s1_len + s2_len + s3_len] = '\0';
+
+	return(s);
+}