+/*
+ * Copyright 2003-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_O_STR_H
+# define HEADER_O_STR_H
+
+# include <stddef.h> /* to get size_t */
+
+int OPENSSL_memcmp(const void *p1, const void *p2, size_t n);
+
+#endif