From a841177c5b60af7c513047cf3e8eef9c4108251b Mon Sep 17 00:00:00 2001
From: luzhen <33650326+deepin-mozart@users.noreply.github.com>
Date: Thu, 23 Dec 2021 15:21:55 +0800
Subject: [PATCH] Fix valid function invoke failed in future class (#75)

In C++11, shared_ptr has an explicit operator bool which
means that a shared_ptr can't be implicitly converted to a bool.
adding an explicit cast is a valid fix to the code.
---
 include/dap/future.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/dap/future.h b/include/dap/future.h
index 4b2d5f2..af103c3 100644
--- a/include/dap/future.h
+++ b/include/dap/future.h
@@ -93,7 +93,7 @@ future<T>::future(const std::shared_ptr<State>& s) : state(s) {}
 
 template <typename T>
 bool future<T>::valid() const {
-  return state;
+  return static_cast<bool>(state);
 }
 
 template <typename T>