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-rw-r--r--rust/proc-macro2/marker.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/rust/proc-macro2/marker.rs b/rust/proc-macro2/marker.rs
index 23b94ce6fa85..6f322424808c 100644
--- a/rust/proc-macro2/marker.rs
+++ b/rust/proc-macro2/marker.rs
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
use alloc::rc::Rc;
use core::marker::PhantomData;
use core::panic::{RefUnwindSafe, UnwindSafe};