From 1fb53e50908e95038cb7e8714b5bf68c3d38ef2d Mon Sep 17 00:00:00 2001
From: Jacob Lifshay <programmerjake@gmail.com>
Date: Fri, 16 Jun 2017 15:22:05 -0700
Subject: [PATCH] fix operator = bug in util::optional

---
 src/util/optional.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/util/optional.h b/src/util/optional.h
index 7144707..3186719 100644
--- a/src/util/optional.h
+++ b/src/util/optional.h
@@ -399,7 +399,6 @@ private:
 
 public:
     using Base::Base;
-    using Base::operator=;
     using Base::reset;
     using Base::emplace;
     constexpr optional() noexcept = default;
@@ -469,6 +468,8 @@ public:
         : Base(in_place, std::forward<U>(value))
     {
     }
+    optional &operator=(const optional &) = default;
+    optional &operator=(optional &&) = default;
     template <typename U = T,
               typename = typename std::
                   enable_if<!std::is_same<typename std::decay<U>::type, optional>::value
-- 
2.30.2