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-rw-r--r--rust/alloc/vec/is_zero.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/rust/alloc/vec/is_zero.rs b/rust/alloc/vec/is_zero.rs
index edf270db81d4..377f3d172777 100644
--- a/rust/alloc/vec/is_zero.rs
+++ b/rust/alloc/vec/is_zero.rs
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
use crate::boxed::Box;
#[rustc_specialization_trait]