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-rw-r--r--tests/dup3.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/tests/dup3.c b/tests/dup3.c
index 7a65b6141..741e06f88 100644
--- a/tests/dup3.c
+++ b/tests/dup3.c
@@ -1,3 +1,10 @@
+/*
+ * Copyright (c) 2016-2018 The strace developers.
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
#include "tests.h"
#include <fcntl.h>
#include <asm/unistd.h>