From 04d01a00a2924525658b19794534bec5672500e6 Mon Sep 17 00:00:00 2001
From: Taiki Endo <te316e89@gmail.com>
Date: Fri, 8 Dec 2023 00:42:09 +0900
Subject: [PATCH] FuturesOrdered: Use 64-bit index

---
 futures-util/src/stream/futures_ordered.rs | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/futures-util/src/stream/futures_ordered.rs b/futures-util/src/stream/futures_ordered.rs
index 3aaef8bde..2cc144e81 100644
--- a/futures-util/src/stream/futures_ordered.rs
+++ b/futures-util/src/stream/futures_ordered.rs
@@ -19,7 +19,8 @@ pin_project! {
     struct OrderWrapper<T> {
         #[pin]
         data: T, // A future or a future's output
-        index: isize,
+        // Use i64 for index since isize may overflow in 32-bit targets.
+        index: i64,
     }
 }
 
@@ -98,8 +99,8 @@ where
 pub struct FuturesOrdered<T: Future> {
     in_progress_queue: FuturesUnordered<OrderWrapper<T>>,
     queued_outputs: BinaryHeap<OrderWrapper<T::Output>>,
-    next_incoming_index: isize,
-    next_outgoing_index: isize,
+    next_incoming_index: i64,
+    next_outgoing_index: i64,
 }
 
 impl<T: Future> Unpin for FuturesOrdered<T> {}