From 50190741f18bdcd1cc0b5112d1ed80881164c3c0 Mon Sep 17 00:00:00 2001
From: Willem Jan Withagen <wjw@digiware.nl>
Date: Sat, 27 May 2017 18:36:08 +0200
Subject: [PATCH] common/iso_8601.cc: Make return expression Clang compatible

Signed-off-by: Willem Jan Withagen <wjw@digiware.nl>
---
 src/common/iso_8601.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/common/iso_8601.cc b/src/common/iso_8601.cc
index dcf43be941365..39e00e0b31f9c 100644
--- a/src/common/iso_8601.cc
+++ b/src/common/iso_8601.cc
@@ -41,7 +41,8 @@ optional<real_time> calculate(const tm& t, uint32_t n = 0) {
     return none;
   }
 
-  return real_clock::from_time_t(tt) + nanoseconds(n);
+  return boost::make_optional<real_time>(real_clock::from_time_t(tt)
+                                         + nanoseconds(n));
 }
 }
 
-- 
2.39.5