From: Jacob Lifshay <programmerjake@gmail.com>
Date: Fri, 16 Jun 2017 22:22:05 +0000 (-0700)
Subject: fix operator = bug in util::optional
X-Git-Tag: gsoc-2017~97
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1fb53e50908e95038cb7e8714b5bf68c3d38ef2d;p=kazan.git

fix operator = bug in util::optional
---

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