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-rw-r--r--rust/syn/span.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/rust/syn/span.rs b/rust/syn/span.rs
index eb2779479aaa..e6d55b3ccd03 100644
--- a/rust/syn/span.rs
+++ b/rust/syn/span.rs
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
use proc_macro2::extra::DelimSpan;
use proc_macro2::{Delimiter, Group, Span, TokenStream};