From 1d11ecfbcd4714c4d568ed1c44ee2df07dfba735 Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi@cloudius-systems.com>
Date: Sun, 21 Sep 2014 19:52:04 +0300
Subject: [PATCH] future: implement move assignment

---
 core/future.hh | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/core/future.hh b/core/future.hh
index 07abfe9a3e..ce7cc99c71 100644
--- a/core/future.hh
+++ b/core/future.hh
@@ -270,7 +270,13 @@ public:
         }
     }
     future(const future&) = delete;
-    future& operator=(future&& x);
+    future& operator=(future&& x) {
+        if (this != &x) {
+            this->~future();
+            new (this) future(std::move(x));
+        }
+        return *this;
+    }
     void operator=(const future&) = delete;
     ~future() {
         if (_promise) {