From 8f7d556c75be80449be60795085f081615c49227 Mon Sep 17 00:00:00 2001
From: Josh Stone <jistone@redhat.com>
Date: Sat, 24 Jan 2026 11:13:51 -0800
Subject: [PATCH] `impl TrustedLen for ArrayWindows`

---
 library/core/src/slice/iter.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/library/core/src/slice/iter.rs b/library/core/src/slice/iter.rs
index 6e881b1e8b74..c5dffcf7e8f7 100644
--- a/library/core/src/slice/iter.rs
+++ b/library/core/src/slice/iter.rs
@@ -2260,6 +2260,9 @@ impl<T, const N: usize> ExactSizeIterator for ArrayWindows<'_, T, N> {
     }
 }
 
+#[unstable(feature = "trusted_len", issue = "37572")]
+unsafe impl<T, const N: usize> TrustedLen for ArrayWindows<'_, T, N> {}
+
 #[stable(feature = "array_windows", since = "1.94.0")]
 impl<T, const N: usize> FusedIterator for ArrayWindows<'_, T, N> {}