Define boost::wrapexcept when BOOST_NO_EXCEPTIONS is defined, to enable boost::make_exception_ptr

test/make_exception_ptr_nx_test2.cpp

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+// Copyright 2020 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// http://www.boost.org/LICENSE_1_0.txt
+
+#if defined(_MSC_VER)
+# pragma warning(disable: 4702) // unreachable code
+# pragma warning(disable: 4577) // noexcept used without /EHsc
+#endif
+
+#define BOOST_EXCEPTION_DISABLE
+
+//#include <boost/exception_ptr.hpp>
+
+#include <boost/throw_exception.hpp>
+#include <boost/exception/exception.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/make_shared.hpp>
+
+typedef boost::shared_ptr<boost::exception_detail::clone_base const> exception_ptr;
+
+template<class E> exception_ptr make_exception_ptr( E const& e )
+{
+    return boost::make_shared< boost::wrapexcept<E> >( e );
+}
+
+class my_exception: public std::exception {};
+
+int main()
+{
+    ::make_exception_ptr( my_exception() );
+}
+
+namespace boost
+{
+
+// shared_ptr needs this
+void throw_exception( std::exception const & )
+{
+    std::exit( 1 );
+}
+
+} // namespace boost