From 26aa1fb96d0b7256dbbfdb4a0d78866ed97eea4f Mon Sep 17 00:00:00 2001
From: Christopher Kohlhoff <chris@kohlhoff.com>
Date: Wed, 2 Mar 2022 21:38:43 +1100
Subject: [PATCH] Mark bind_cancellation_slot() result as nodiscard.

---
 include/boost/asio/bind_cancellation_slot.hpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/boost/asio/bind_cancellation_slot.hpp b/include/boost/asio/bind_cancellation_slot.hpp
index 7bae4bd2..eafb8ec4 100644
--- a/include/boost/asio/bind_cancellation_slot.hpp
+++ b/include/boost/asio/bind_cancellation_slot.hpp
@@ -459,7 +459,8 @@ private:
 /// Associate an object of type @c T with a cancellation slot of type
 /// @c CancellationSlot.
 template <typename CancellationSlot, typename T>
-inline cancellation_slot_binder<typename decay<T>::type, CancellationSlot>
+BOOST_ASIO_NODISCARD inline
+cancellation_slot_binder<typename decay<T>::type, CancellationSlot>
 bind_cancellation_slot(const CancellationSlot& s, BOOST_ASIO_MOVE_ARG(T) t)
 {
   return cancellation_slot_binder<