Squashed 'third_party/boostorg/bind/' content from commit d67200b

Change-Id: I21573b0bd786f4e8482a7bb79a73b7574be6bdae
git-subtree-dir: third_party/boostorg/bind
git-subtree-split: d67200bd2a1f67135a4c677636546ec9615e21ea
diff --git a/test/placeholder_const_ref_test.cpp b/test/placeholder_const_ref_test.cpp
new file mode 100644
index 0000000..f0835b0
--- /dev/null
+++ b/test/placeholder_const_ref_test.cpp
@@ -0,0 +1,37 @@
+//
+//  placeholder_const_ref_test.cpp - forming a const& to _1
+//
+//  Copyright 2015 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+
+#include <boost/bind/placeholders.hpp>
+#include <boost/is_placeholder.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+//
+
+template<class T> void test( T const &, int i )
+{
+    BOOST_TEST_EQ( boost::is_placeholder<T>::value, i );
+}
+
+int main()
+{
+    using namespace boost::placeholders;
+
+    test( _1, 1 );
+    test( _2, 2 );
+    test( _3, 3 );
+    test( _4, 4 );
+    test( _5, 5 );
+    test( _6, 6 );
+    test( _7, 7 );
+    test( _8, 8 );
+    test( _9, 9 );
+
+    return boost::report_errors();
+}