1 files changed, 61 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/30_threads/condition_variable_any/members/clock_neg.cc b/libstdc++-v3/testsuite/30_threads/condition_variable_any/members/clock_neg.cc
new file mode 100644
index 00000000000..4302363f407
--- /dev/null
+++ b/libstdc++-v3/testsuite/30_threads/condition_variable_any/members/clock_neg.cc
@@ -0,0 +1,61 @@
+// 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 compile { target c++2a } }
+
+#include <condition_variable>
+
+struct clok
+{
+  // no clok::rep or clok::period defined
+  using duration = std::chrono::milliseconds;
+  using time_point = std::chrono::time_point<clok>;
+  static constexpr bool is_steady = false;
+  static time_point now();
+};
+
+void
+test01()
+{
+  std::mutex m;
+  std::unique_lock<std::mutex> l(m);
+  std::condition_variable_any cv;
+  cv.wait_until(l, clok::now()); // { dg-error "here" }
+}
+
+struct cloc
+{
+  using duration = std::chrono::milliseconds;
+  using rep = duration::rep;
+  using period = duration::period;
+  // cloc::time_point::duration should be the same as cloc::duration:
+  using time_point = std::chrono::time_point<cloc, std::chrono::seconds>;
+  static constexpr bool is_steady = false;
+  static time_point now();
+};
+
+void
+test02()
+{
+  std::mutex m;
+  std::unique_lock<std::mutex> l(m);
+  std::condition_variable_any cv;
+  cv.wait_until(l, cloc::now()); // { dg-error "here" }
+}
+
+// { dg-error "static assertion failed" "" { target *-*-* } 0 }