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-rw-r--r--rust/syn/buffer.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/rust/syn/buffer.rs b/rust/syn/buffer.rs
index 7b6a504eeb7c..406f70db323c 100644
--- a/rust/syn/buffer.rs
+++ b/rust/syn/buffer.rs
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
//! A stably addressed token buffer supporting efficient traversal based on a
//! cheaply copyable cursor.