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diff --git a/src/boost/libs/outcome/test/tests/noexcept-propagation.cpp b/src/boost/libs/outcome/test/tests/noexcept-propagation.cpp
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+++ b/src/boost/libs/outcome/test/tests/noexcept-propagation.cpp
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+/* Unit testing for outcomes
+(C) 2013-2019 Niall Douglas <http://www.nedproductions.biz/> (6 commits)
+
+
+Boost Software License - Version 1.0 - August 17th, 2003
+
+Permission is hereby granted, free of charge, to any person or organization
+obtaining a copy of the software and accompanying documentation covered by
+this license (the "Software") to use, reproduce, display, distribute,
+execute, and transmit the Software, and to prepare derivative works of the
+Software, and to permit third-parties to whom the Software is furnished to
+do so, all subject to the following:
+
+The copyright notices in the Software and this entire statement, including
+the above license grant, this restriction and the following disclaimer,
+must be included in all copies of the Software, in whole or in part, and
+all derivative works of the Software, unless such copies or derivative
+works are solely in the form of machine-executable object code generated by
+a source language processor.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+*/
+
+#include <boost/outcome/outcome.hpp>
+#include <boost/test/unit_test.hpp>
+#include <boost/test/unit_test_monitor.hpp>
+
+#ifdef _MSC_VER
+#pragma warning(disable : 4127)  // conditional expression is constant
+#endif
+
+#ifndef BOOST_NO_EXCEPTIONS
+// std nothrow traits seem to return random values if exceptions are disabled on MSVC
+BOOST_OUTCOME_AUTO_TEST_CASE(works_outcome_noexcept, "Tests that the outcome correctly inherits noexcept from its type R")
+{
+  using namespace BOOST_OUTCOME_V2_NAMESPACE;
+  {
+    using type = outcome<int>;
+    BOOST_CHECK(std::is_nothrow_copy_constructible<type>::value);
+    BOOST_CHECK(std::is_nothrow_move_constructible<type>::value);
+    BOOST_CHECK(std::is_nothrow_copy_assignable<type>::value);
+    BOOST_CHECK(std::is_nothrow_move_assignable<type>::value);
+    BOOST_CHECK(std::is_nothrow_destructible<type>::value);
+  }
+  {
+    using type = outcome<std::string>;
+    BOOST_CHECK(std::is_nothrow_copy_constructible<type>::value == std::is_nothrow_copy_constructible<std::string>::value);
+    BOOST_CHECK(std::is_nothrow_move_constructible<type>::value == std::is_nothrow_move_constructible<std::string>::value);
+    BOOST_CHECK(std::is_nothrow_copy_assignable<type>::value == std::is_nothrow_copy_assignable<std::string>::value);
+    BOOST_CHECK(std::is_nothrow_move_assignable<type>::value == std::is_nothrow_move_assignable<std::string>::value);
+    BOOST_CHECK(std::is_nothrow_destructible<type>::value == std::is_nothrow_destructible<std::string>::value);
+  }
+  {
+    struct Except
+    {
+      int n;
+      Except() = delete;
+      Except(const Except & /*unused*/) noexcept(false)
+          : n(0)
+      {
+      }
+      Except(Except && /*unused*/) noexcept(false)
+          : n(0)
+      {
+      }
+      Except &operator=(const Except & /*unused*/) noexcept(false) { return *this; }
+      Except &operator=(Except && /*unused*/) noexcept(false) { return *this; }
+      ~Except() noexcept(false) { n = 0; }
+    };
+    using type = outcome<Except>;
+    BOOST_CHECK(!std::is_nothrow_copy_constructible<type>::value);
+    BOOST_CHECK(!std::is_nothrow_move_constructible<type>::value);
+    BOOST_CHECK(!std::is_nothrow_copy_assignable<type>::value);
+    BOOST_CHECK(!std::is_nothrow_move_assignable<type>::value);
+    BOOST_CHECK(!std::is_nothrow_destructible<type>::value);
+  }
+}
+#endif