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-rw-r--r--library/core/src/sync/atomic.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/library/core/src/sync/atomic.rs b/library/core/src/sync/atomic.rs
index 920a82f5af4..9d74f537491 100644
--- a/library/core/src/sync/atomic.rs
+++ b/library/core/src/sync/atomic.rs
@@ -1150,6 +1150,7 @@ impl<T> From<*mut T> for AtomicPtr<T> {
     }
 }
 
+#[allow(unused_macros)] // This macro ends up being unused on some architectures.
 macro_rules! if_not_8_bit {
     (u8, $($tt:tt)*) => { "" };
     (i8, $($tt:tt)*) => { "" };