libcxx/test/std/utilities/utility/pairs/pairs.pair/dtor.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 // UNSUPPORTED: c++03
  10
  11 // <utility>
  12
  13 // template <class T1, class T2> struct pair
  14
  15 // ~pair()
  16
  17 // C++17 added:
  18 //   The destructor of pair shall be a trivial destructor
  19 //     if (is_trivially_destructible_v<T1> && is_trivially_destructible_v<T2>) is true.
  20
  21
  22 #include <utility>
  23 #include <type_traits>
  24 #include <string>
  25 #include <cassert>
  26
  27 #include "test_macros.h"
  28
  29 int main(int, char**)
  30 {
  31   static_assert((std::is_trivially_destructible<
  32       std::pair<int, float> >::value), "");
  33   static_assert((!std::is_trivially_destructible<
  34       std::pair<int, std::string> >::value), "");
  35
  36   return 0;
  37 }