diff libstdc++-v3/testsuite/std/time/clock/file/members.cc @ 19:2b5abeee2509 default tip

update gcc11
author anatofuz
date Mon, 25 May 2020 07:50:57 +0900
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libstdc++-v3/testsuite/std/time/clock/file/members.cc	Mon May 25 07:50:57 2020 +0900
@@ -0,0 +1,39 @@
+// Copyright (C) 2020 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++2a" }
+// { dg-do run { target c++2a } }
+
+#include <chrono>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  auto sys_now = std::chrono::system_clock::now();
+  auto file_now = std::chrono::file_clock::now();
+  auto d1 = std::chrono::file_clock::to_sys(file_now) - sys_now;
+  VERIFY( d1 < std::chrono::seconds(1) );
+  auto d2 = file_now - std::chrono::file_clock::from_sys(sys_now);
+  VERIFY( d2 == d1 );
+}
+
+int
+main()
+{
+  test01();
+}