From 7d98501461a2cc639beea377ffd5eb60d9688fcc Mon Sep 17 00:00:00 2001
From: Eric Niebler <eniebler@nvidia.com>
Date: Wed, 7 Oct 2026 16:11:28 +0000
Subject: [PATCH] perfectly forward `__make_sexpr` arguments into the returned
 sender

---
 include/stdexec/__detail/__basic_sender.hpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/stdexec/__detail/__basic_sender.hpp b/include/stdexec/__detail/__basic_sender.hpp
index a52dff5dd..ab89a3d8c 100644
--- a/include/stdexec/__detail/__basic_sender.hpp
+++ b/include/stdexec/__detail/__basic_sender.hpp
@@ -461,9 +461,11 @@ namespace STDEXEC
     struct __make_sexpr_t
     {
       template <class _Data = __, class... _Child>
-      constexpr auto operator()(_Data __data = {}, _Child... __child) const
+      constexpr auto operator()(_Data&& __data = {}, _Child&&... __child) const
+        noexcept(__nothrow_decay_copyable<_Data, _Child...>)
+          -> __sexpr_t<_Tag, __decay_t<_Data>, __decay_t<_Child>...>
       {
-        return __sexpr_t<_Tag, _Data, _Child...>{
+        return {
           {_Tag(), static_cast<_Data&&>(__data), static_cast<_Child&&>(__child)...}
         };
       }