libcxx/test/std/strings/basic.string/string.cons/move_noexcept.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 // <string>
  12
  13 // basic_string(basic_string&&)
  14 //        noexcept(is_nothrow_move_constructible<allocator_type>::value); // constexpr since C++20
  15
  16 // This tests a conforming extension
  17
  18 #include <string>
  19 #include <cassert>
  20
  21 #include "test_macros.h"
  22 #include "test_allocator.h"
  23
  24 int main(int, char**) {
  25   {
  26     typedef std::string C;
  27     static_assert(std::is_nothrow_move_constructible<C>::value, "");
  28   }
  29   {
  30     typedef std::basic_string<char, std::char_traits<char>, test_allocator<char>> C;
  31     static_assert(std::is_nothrow_move_constructible<C>::value, "");
  32   }
  33   {
  34     typedef std::basic_string<char, std::char_traits<char>, limited_allocator<char, 10>> C;
  35 #if TEST_STD_VER <= 14
  36     static_assert(!std::is_nothrow_move_constructible<C>::value, "");
  37 #else
  38     static_assert(std::is_nothrow_move_constructible<C>::value, "");
  39 #endif
  40   }
  41
  42   return 0;
  43 }