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-rw-r--r--src/rust/external/external.rs3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/rust/external/external.rs b/src/rust/external/external.rs
index 09d80cb2ba..b9e17f021d 100644
--- a/src/rust/external/external.rs
+++ b/src/rust/external/external.rs
@@ -1,3 +1,6 @@
+// Copyright (c) 2016-2017, The Tor Project, Inc. */
+// See LICENSE for licensing information */
+
use libc::{c_char, c_int};
use std::ffi::CString;