From e9684a1f66063f41ed629e289976d5c236cb58cd Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Thu, 19 Mar 2020 17:36:20 +0200
Subject: [PATCH] Apply a workaround for msvc-12.0, msvc-14.0

---
 include/boost/mp11/algorithm.hpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/boost/mp11/algorithm.hpp b/include/boost/mp11/algorithm.hpp
index cd13332..168cfdf 100644
--- a/include/boost/mp11/algorithm.hpp
+++ b/include/boost/mp11/algorithm.hpp
@@ -1176,7 +1176,15 @@ namespace detail
 
 template<template<class...> class F> struct mp_partial_sum_impl_f
 {
+#if BOOST_MP11_WORKAROUND( BOOST_MP11_MSVC, <= 1900 )
+
+    template<class V, class T> using fn = mp_list<F<mp_first<V>, T>, mp_push_back<mp_second<V>, F<mp_first<V>, T>> >;
+
+#else
+
     template<class V, class T, class N = F<mp_first<V>, T>> using fn = mp_list<N, mp_push_back<mp_second<V>, N>>;
+
+#endif
 };
 
 } // namespace detail