From 3e482b5b59e972a4a1a9956dd953894b4c445f48 Mon Sep 17 00:00:00 2001
From: nickd-airo <124247818+nickd-airo@users.noreply.github.com>
Date: Wed, 15 Nov 2023 10:24:40 +0800
Subject: [PATCH] Fix missing wake() in PendingOnce

PendingOnce should wake() before returning Pending,
otherwise executors may not poll() again.
---
 futures-util/src/async_await/pending.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/futures-util/src/async_await/pending.rs b/futures-util/src/async_await/pending.rs
index 5d7a431811..daa18e6c1b 100644
--- a/futures-util/src/async_await/pending.rs
+++ b/futures-util/src/async_await/pending.rs
@@ -32,11 +32,12 @@ pub struct PendingOnce {
 
 impl Future for PendingOnce {
     type Output = ();
-    fn poll(mut self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Self::Output> {
+    fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
         if self.is_ready {
             Poll::Ready(())
         } else {
             self.is_ready = true;
+            cx.waker().wake_by_ref();
             Poll::Pending
         }
     }