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-rw-r--r--rust/proc-macro2/rcvec.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/rust/proc-macro2/rcvec.rs b/rust/proc-macro2/rcvec.rs
index 23edc77d597f..e224ebe277ef 100644
--- a/rust/proc-macro2/rcvec.rs
+++ b/rust/proc-macro2/rcvec.rs
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
use alloc::rc::Rc;
use alloc::vec;
use core::mem;