From 07916e01f1ec074fad96dffc1cd5a499986f1383 Mon Sep 17 00:00:00 2001
From: Ian Petersen <ispeters@gmail.com>
Date: Wed, 4 Sep 2024 11:07:35 -0700
Subject: [PATCH] Fix the broken test

Declare a return type on `when_all_range`'s customization of `connect`
so that `v1::async_scope::detached_spawn()`'s require clause can
determine whether a `when_all_range` sender is const-ref-connectable.
---
 include/unifex/when_all_range.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/unifex/when_all_range.hpp b/include/unifex/when_all_range.hpp
index b2eb9035..2a96028c 100644
--- a/include/unifex/when_all_range.hpp
+++ b/include/unifex/when_all_range.hpp
@@ -307,7 +307,7 @@ struct _sender<Sender>::type final {
       friend auto tag_invoke(
           unifex::tag_t<unifex::connect> /* unused */,
           Sender2&& sender,
-          Receiver&& receiver) {
+          Receiver&& receiver) -> operation<remove_cvref_t<Receiver>, Sender> {
     // return an operation that wraps all connections
     return operation<unifex::remove_cvref_t<Receiver>, Sender>{
         static_cast<Receiver&&>(receiver),