From 56cc22fdfe8e15cdc072479d06226b4e05ce93cd Mon Sep 17 00:00:00 2001
From: peter klausler <pklausler@nvidia.com>
Date: Mon, 30 Jul 2018 11:08:22 -0700
Subject: [PATCH] [flang] Use std::nullopt rather than {}.

Original-commit: flang-compiler/f18@9a740acf8346de10c0dda34ba2706980f9643802
Reviewed-on: https://github.com/flang-compiler/f18/pull/151
---
 flang/lib/common/idioms.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/flang/lib/common/idioms.h b/flang/lib/common/idioms.h
index 61483b0..675f04c 100644
--- a/flang/lib/common/idioms.h
+++ b/flang/lib/common/idioms.h
@@ -135,7 +135,7 @@ std::optional<A> GetIf(const VARIANT &u) {
   if (const A * x{std::get_if<A>(&u)}) {
     return {*x};
   }
-  return {};
+  return std::nullopt;
 }
 }  // namespace Fortran::common
 #endif  // FORTRAN_COMMON_IDIOMS_H_
-- 
2.7.4