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-rw-r--r--library/std/src/sync/once_lock.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/library/std/src/sync/once_lock.rs b/library/std/src/sync/once_lock.rs
index 56cf877ddc6..a51e5c1b76b 100644
--- a/library/std/src/sync/once_lock.rs
+++ b/library/std/src/sync/once_lock.rs
@@ -498,6 +498,7 @@ impl<T> OnceLock<T> {
     }
 
     #[cold]
+    #[optimize(size)]
     fn initialize<F, E>(&self, f: F) -> Result<(), E>
     where
         F: FnOnce() -> Result<T, E>,