From 90e99bdd321d18e1a18341612371f1774a993d82 Mon Sep 17 00:00:00 2001
From: Josh Stone <jistone@redhat.com>
Date: Sat, 24 Jan 2026 11:08:25 -0800
Subject: [PATCH] Manually `impl Clone for ArrayWindows`

This implementation doesn't need the derived `T: Clone`.

(cherry picked from commit 90521553e6fd9bb952fb0f064f7fa022d85d0493)
---
 library/core/src/slice/iter.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/library/core/src/slice/iter.rs b/library/core/src/slice/iter.rs
index 03c503f169c8..af63ffa9b0bf 100644
--- a/library/core/src/slice/iter.rs
+++ b/library/core/src/slice/iter.rs
@@ -2175,7 +2175,7 @@ unsafe impl<T> Sync for ChunksExactMut<'_, T> where T: Sync {}
 ///
 /// [`array_windows`]: slice::array_windows
 /// [slices]: slice
-#[derive(Debug, Clone)]
+#[derive(Debug)]
 #[stable(feature = "array_windows", since = "1.94.0")]
 #[must_use = "iterators are lazy and do nothing unless consumed"]
 pub struct ArrayWindows<'a, T: 'a, const N: usize> {
@@ -2189,6 +2189,14 @@ impl<'a, T: 'a, const N: usize> ArrayWindows<'a, T, N> {
     }
 }
 
+// FIXME(#26925) Remove in favor of `#[derive(Clone)]`
+#[stable(feature = "array_windows", since = "1.94.0")]
+impl<T, const N: usize> Clone for ArrayWindows<'_, T, N> {
+    fn clone(&self) -> Self {
+        Self { v: self.v }
+    }
+}
+
 #[stable(feature = "array_windows", since = "1.94.0")]
 impl<'a, T, const N: usize> Iterator for ArrayWindows<'a, T, N> {
     type Item = &'a [T; N];