From 8c22228fe5b64484d49c303461ca8b272ac9bc19 Mon Sep 17 00:00:00 2001
From: Hugues Morisset <morisset.hugues@gmail.com>
Date: Fri, 7 Feb 2025 11:49:46 +0100
Subject: [PATCH] Use u64 instead of usize to hash array length

size of usize is platform dependent and hashes to a different
value on 32bit vs 64bit platform.
https://doc.rust-lang.org/std/primitive.usize.html
---
 core/src/lib.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/src/lib.rs b/core/src/lib.rs
index ecfe660..0218c73 100644
--- a/core/src/lib.rs
+++ b/core/src/lib.rs
@@ -173,7 +173,7 @@ macro_rules! impl_type_hash_array {
         impl<$T: $crate::TypeHash> TypeHash for [$T; $n] {
             fn write_hash(hasher: &mut impl std::hash::Hasher) {
                 hasher.write(b"[;]");
-                hasher.write_usize($n);
+                hasher.write_u64($n);
                 $T::write_hash(hasher);
             }
         }