1 files changed, 91 insertions, 0 deletions
diff --git a/tests/global-init-override.c b/tests/global-init-override.c
new file mode 100644
index 0000000..bb72d7e
--- /dev/null
+++ b/tests/global-init-override.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2015 Red Hat, Inc.
+ *
+ * Author: Nikos Mavrogiannopoulos
+ *
+ * This file is part of GnuTLS.
+ *
+ * GnuTLS 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; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuTLS 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 GnuTLS; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+/* Parts copied from GnuTLS example programs. */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <gnutls/gnutls.h>
+#include <gnutls/x509.h>
+#include <gnutls/x509-ext.h>
+
+#include "utils.h"
+
+/* We test whether implicit global initialization can be overridden */
+
+static int weak_symbol_works;
+
+struct gnutls_subject_alt_names_st {
+	struct name_st *names;
+	unsigned int size;
+};
+
+/* gnutls_subject_alt_names_init() is called by gnutls_x509_crt_init().
+ * We override it here to test if weak symbols work at all.
+ */
+__attribute__ ((visibility ("protected")))
+int gnutls_subject_alt_names_init(gnutls_subject_alt_names_t * sans)
+{
+	weak_symbol_works = 1;
+
+	*sans = gnutls_calloc(1, sizeof(struct gnutls_subject_alt_names_st));
+	if (*sans == NULL) {
+		return GNUTLS_E_MEMORY_ERROR;
+	}
+
+	return 0;
+}
+
+GNUTLS_SKIP_GLOBAL_INIT
+
+void doit(void)
+{
+
+	int ret;
+	gnutls_x509_crt_t crt;
+
+	ret = gnutls_x509_crt_init(&crt);
+	if (ret >= 0) {
+		if (!weak_symbol_works)
+			exit(77);
+
+		fail("Library is already initialized\n");
+	}
+
+	gnutls_global_init();
+
+	ret = gnutls_x509_crt_init(&crt);
+	if (ret < 0) {
+		fail("Could not init certificate!\n");
+	}
+	gnutls_x509_crt_deinit(crt);
+
+	gnutls_global_deinit();
+}