--- /dev/null
+/*
+ * Copyright 2017 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
+ */
+
+/* ====================================================================
+ * Copyright (c) 2017 Oracle and/or its affiliates. All rights reserved.
+ */
+
+#include <stdio.h>
+#include <openssl/err.h>
+#include <openssl/x509_vfy.h>
+
+#include "test_main_custom.h"
+#include "testutil.h"
+
+static int test_509_dup_cert(const char *cert_f)
+{
+ int ret = 0;
+ X509_STORE_CTX *sctx = NULL;
+ X509_STORE *store = NULL;
+ X509_LOOKUP *lookup = NULL;
+
+ if (TEST_ptr(store = X509_STORE_new())
+ && TEST_ptr(lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file()))
+ && TEST_true(X509_load_cert_file(lookup, cert_f, X509_FILETYPE_PEM))
+ && TEST_true(X509_load_cert_file(lookup, cert_f, X509_FILETYPE_PEM)))
+ ret = 1;
+
+ X509_STORE_CTX_free(sctx);
+ X509_STORE_free(store);
+ return ret;
+}
+
+int test_main(int argc, char **argv)
+{
+ if (!TEST_int_eq(argc, 2)) {
+ TEST_info("usage: x509_dup_cert_test cert.pem");
+ return 1;
+ }
+
+ return !test_509_dup_cert(argv[1]);
+}