libcxx/test/std/utilities/utility/pairs/pairs.pair/ctor.copy.pass.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 // <utility>
  10
  11 // template <class T1, class T2> struct pair
  12
  13 // pair(const pair&) = default;
  14
  15 #include <utility>
  16 #include <cassert>
  17
  18 #include "test_macros.h"
  19
  20 int main(int, char**)
  21 {
  22     {
  23         typedef std::pair<int, short> P1;
  24         P1 p1(3, static_cast<short>(4));
  25         P1 p2 = p1;
  26         assert(p2.first == 3);
  27         assert(p2.second == 4);
  28     }
  29 #if TEST_STD_VER > 11
  30     {
  31         typedef std::pair<int, short> P1;
  32         constexpr P1 p1(3, static_cast<short>(4));
  33         constexpr P1 p2 = p1;
  34         static_assert(p2.first == 3, "");
  35         static_assert(p2.second == 4, "");
  36     }
  37 #endif
  38
  39   return 0;
  40 }