From d857cee67caf555fedae54522ffd58429f7ee722 Mon Sep 17 00:00:00 2001
From: Andrew Lamb <andrew@nerdnetworks.org>
Date: Fri, 26 Apr 2024 11:23:27 -0400
Subject: [PATCH] Add safety justification comment

---
 arrow-cast/src/cast/mod.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arrow-cast/src/cast/mod.rs b/arrow-cast/src/cast/mod.rs
index 8b1b97561e25..b5b45f98feab 100644
--- a/arrow-cast/src/cast/mod.rs
+++ b/arrow-cast/src/cast/mod.rs
@@ -2288,6 +2288,8 @@ where
 
     assert_eq!(views_builder.len(), len);
 
+    /// Safety: the input was a valid array so the data was UTF8 (if string) and all offsets were valid
+    /// and we created the views correctly
     Ok(Arc::new(unsafe {
         GenericByteViewArray::<V>::new_unchecked(
             ScalarBuffer::new(views_builder.finish(), 0, len),