From 38f71361fbbba1e8bf23876e218e8622e6cbc406 Mon Sep 17 00:00:00 2001
From: Andrey Semashev <Lastique@users.noreply.github.com>
Date: Sun, 24 Nov 2019 05:00:59 +0300
Subject: [PATCH] Add a convenience instance of empty_init_t (#65)

* Added a convenience instance of empty_init_t.

Closes https://github.com/boostorg/core/issues/63.
---
 include/boost/core/empty_value.hpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/boost/core/empty_value.hpp b/include/boost/core/empty_value.hpp
index 7139b3e..d708379 100644
--- a/include/boost/core/empty_value.hpp
+++ b/include/boost/core/empty_value.hpp
@@ -40,6 +40,9 @@ struct use_empty_value_base {
 
 struct empty_init_t { };
 
+BOOST_INLINE_VARIABLE BOOST_CONSTEXPR_OR_CONST
+empty_init_t empty_init = empty_init_t();
+
 namespace empty_ {
 
 template<class T, unsigned N = 0,