Add missing test from previous commit

	* testsuite/27_io/filesystem/directory_entry/lwg3171.cc: New test
	(missed from previous commit).

From-SVN: r267297

libstdc++-v3/ChangeLog

+2018-12-20  Jonathan Wakely  <jwakely@redhat.com>
+
+	* testsuite/27_io/filesystem/directory_entry/lwg3171.cc: New test
+	(missed from previous commit).
+
 2018-12-19  Jonathan Wakely  <jwakely@redhat.com>
 
 	* doc/xml/manual/abi.xml: Add missing word.

libstdc++-v3/testsuite/27_io/filesystem/directory_entry/lwg3171.cc

+// Copyright (C) 2018 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// { dg-options "-std=gnu++17 -lstdc++fs" }
+// { dg-do run { target c++17 } }
+// { dg-require-filesystem-ts "" }
+
+#include <filesystem>
+#include <sstream>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  std::filesystem::directory_entry ent("foo/bar");
+  std::ostringstream os1, os2;
+  os1 << ent;
+  os2 << ent.path();
+  VERIFY( os1.str() == os2.str() );
+}
+
+int
+main()
+{
+  test01();
+}