From 2af1b5edd59eaff4396e1028b6a94fcb0c235e3d Mon Sep 17 00:00:00 2001
From: Patrick Wuttke <mewin@mewin.de>
Date: Tue, 12 Nov 2024 23:31:43 +0100
Subject: [PATCH] Made Future::set() only callable on futures with void result
 to prevent futures that are ready but have no result.

---
 source/mijin/async/future.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/mijin/async/future.hpp b/source/mijin/async/future.hpp
index 5297ff7..ec59bbc 100644
--- a/source/mijin/async/future.hpp
+++ b/source/mijin/async/future.hpp
@@ -113,7 +113,7 @@ public: // modification
         isSet_ = true;
         sigSet.emit();
     }
-    constexpr void set() MIJIN_NOEXCEPT
+    constexpr void set() MIJIN_NOEXCEPT requires (std::is_same_v<TValue, void>)
     {
         MIJIN_ASSERT(!isSet_, "Trying to set a future twice!");
         isSet_ = true;