fix msrc issue for cfg atomic

sagebind · Sep 19, 2023 · 7512ea7 · 7512ea7
1 parent a10e3e8
commit 7512ea7
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/lifetime_free.rs b/src/lifetime_free.rs
@@ -92,6 +92,6 @@ mod alloc_impls {
     unsafe impl<T: LifetimeFree> LifetimeFree for alloc::boxed::Box<T> {}
     unsafe impl<T: LifetimeFree> LifetimeFree for alloc::vec::Vec<T> {}
 
-    #[cfg(target_has_atomic = "ptr")]
+    #[rustversion::attr(since(1.60), cfg(target_has_atomic = "ptr"))]
     unsafe impl<T: LifetimeFree> LifetimeFree for alloc::sync::Arc<T> {}
 }