Add sv_common_reference_test2

test/Jamfile.v2

@@ -307,6 +307,7 @@ run sv_stream_insert_test.cpp ;
 run sv_conversion_test.cpp ;
 run sv_conversion_test2.cpp : ;
 run sv_common_reference_test.cpp ;
+compile sv_common_reference_test2.cpp ;
 
 run span_test.cpp ;
 run span_types_test.cpp ;

test/sv_common_reference_test2.cpp

@@ -0,0 +1,24 @@
+// Copyright 2021 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/core/detail/string_view.hpp>
+#include <boost/config/pragma_message.hpp>
+#include <string>
+#include <iterator>
+
+#if !defined(__cpp_lib_ranges)
+
+BOOST_PRAGMA_MESSAGE( "Skipping test because __cpp_lib_ranges is not defined" )
+
+#else
+
+struct Iterator
+{
+    using value_type = std::string;
+    boost::core::string_view operator*() const noexcept;
+};
+
+static_assert( std::indirectly_readable<Iterator> );
+
+#endif