From 10a4e047e6d6219a4074058099c0d60de6203b6a Mon Sep 17 00:00:00 2001
From: tqcq <99722391+tqcq@users.noreply.github.com>
Date: Thu, 13 Jun 2024 11:07:14 +0800
Subject: [PATCH] fix boxed use monostate

---
 tile/base/future/boxed.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tile/base/future/boxed.h b/tile/base/future/boxed.h
index 2a0dcfc..fb2c70c 100644
--- a/tile/base/future/boxed.h
+++ b/tile/base/future/boxed.h
@@ -86,7 +86,7 @@ private:
   }
 
 private:
-  std::variant<std::monostate, value_type> holding_;
+  std::variant<mpark::monostate, value_type> holding_;
 };
 
 static_assert(std::is_void<decltype(std::declval<Boxed<>>().Get())>::value, "");