libcxx/test/std/time/time.point/time.point.comparisons/compare.three_way.compile.fail.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: c++03, c++11, c++14, c++17
  10
  11 // <chrono>
  12
  13 // time_point
  14
  15 // template<class Clock, class Duration1,
  16 //          three_way_comparable_with<Duration1> Duration2>
  17 //   constexpr auto operator<=>(const time_point<Clock, Duration1>& lhs,
  18 //                              const time_point<Clock, Duration2>& rhs);
  19
  20 // time_points with different clocks should not compare
  21
  22 #include <chrono>
  23
  24 #include "../../clock.h"
  25
  26 int main(int, char**) {
  27   using namespace std::chrono_literals;
  28   std::chrono::time_point<std::chrono::system_clock, std::chrono::milliseconds> t1{3ms};
  29   std::chrono::time_point<Clock, std::chrono::milliseconds> t2{3ms};
  30
  31   t1 <=> t2;
  32
  33   return 0;
  34 }