libcxx/test/std/time/time.duration/ratio.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 // <chrono>
  10
  11 // duration
  12
  13 // Period shall be a specialization of ratio, diagnostic required.
  14
  15 #include <chrono>
  16
  17 template <int N, int D = 1>
  18 class Ratio
  19 {
  20 public:
  21     static const int num = N;
  22     static const int den = D;
  23 };
  24
  25 int main(int, char**)
  26 {
  27     typedef std::chrono::duration<int, Ratio<1> > D;
  28     D d;
  29
  30   return 0;
  31 }