From a02e9bdf892598ebe87f56ae5054d994e34cf80f Mon Sep 17 00:00:00 2001
From: Denis Blank <denis.blank@outlook.com>
Date: Tue, 6 Feb 2018 01:58:07 +0100
Subject: [PATCH] Enable the feature detection based on __cplusplus

---
 include/continuable/detail/features.hpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/include/continuable/detail/features.hpp b/include/continuable/detail/features.hpp
index a470180..385d732 100644
--- a/include/continuable/detail/features.hpp
+++ b/include/continuable/detail/features.hpp
@@ -55,9 +55,12 @@
 #undef CONTINUABLE_WITH_EXCEPTIONS
 #endif
 
-#if defined(__has_feature)
+#if (defined(_MSC_VER) && defined(_HAS_CXX17) && _HAS_CXX17) ||                \
+    (__cplusplus >= 201703L)
+#define CONTINUABLE_HAS_CXX17_CONSTEXPR_IF
+#define CONTINUABLE_HAS_CXX17_FOLD_EXPRESSION
+#elif defined(__has_feature)
 #if __has_feature(cxx_if_constexpr)
-// PR not merged into the clang master yet
 #define CONTINUABLE_HAS_CXX17_CONSTEXPR_IF
 #endif