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-rw-r--r--rust/alloc/boxed.rs4
1 files changed, 4 insertions, 0 deletions
diff --git a/rust/alloc/boxed.rs b/rust/alloc/boxed.rs
index c07536f0d0ce..dcfe87b14f3a 100644
--- a/rust/alloc/boxed.rs
+++ b/rust/alloc/boxed.rs
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
//! A pointer type for heap allocation.
//!
//! [`Box<T>`], casually referred to as a 'box', provides the simplest form of
@@ -163,9 +165,11 @@ use crate::str::from_boxed_utf8_unchecked;
#[cfg(not(no_global_oom_handling))]
use crate::vec::Vec;
+#[cfg(not(no_thin))]
#[unstable(feature = "thin_box", issue = "92791")]
pub use thin::ThinBox;
+#[cfg(not(no_thin))]
mod thin;
/// A pointer type for heap allocation.