add feature gate in doc test

connortsui20 · connortsui20 · commit 9c1255f0a46e · 2025-08-30T10:48:27.000+01:00
diff --git a/library/core/src/ops/range.rs b/library/core/src/ops/range.rs
@@ -742,6 +742,8 @@ impl<T: Copy> Bound<&T> {
     /// # Examples
     ///
     /// ```
+    /// #![feature(bound_copied)]
+    ///
     /// use std::ops::Bound::*;
     /// use std::ops::RangeBounds;
     ///
