libcxx/test/std/containers/sequences/vector.bool/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 // <vector>
  10
  11 // vector(vector&&)
  12 //        noexcept(is_nothrow_move_constructible<allocator_type>::value);
  13
  14 // This tests a conforming extension
  15
  16 // UNSUPPORTED: c++03
  17
  18 #include <vector>
  19 #include <cassert>
  20
  21 #include "test_macros.h"
  22 #include "test_allocator.h"
  23
  24 template <class T>
  25 struct some_alloc
  26 {
  27     typedef T value_type;
  28     some_alloc(const some_alloc&);
  29 };
  30
  31 int main(int, char**)
  32 {
  33 #if defined(_LIBCPP_VERSION)
  34     {
  35         typedef std::vector<bool> C;
  36         static_assert(std::is_nothrow_move_constructible<C>::value, "");
  37     }
  38     {
  39         typedef std::vector<bool, test_allocator<bool>> C;
  40         static_assert(std::is_nothrow_move_constructible<C>::value, "");
  41     }
  42     {
  43         typedef std::vector<bool, other_allocator<bool>> C;
  44         static_assert(std::is_nothrow_move_constructible<C>::value, "");
  45     }
  46 #endif // _LIBCPP_VERSION
  47     {
  48     //  In C++17, move constructors for allocators are not allowed to throw
  49 #if TEST_STD_VER > 14
  50 #if defined(_LIBCPP_VERSION)
  51         typedef std::vector<bool, some_alloc<bool>> C;
  52         static_assert( std::is_nothrow_move_constructible<C>::value, "");
  53 #endif // _LIBCPP_VERSION
  54 #else
  55         typedef std::vector<bool, some_alloc<bool>> C;
  56         static_assert(!std::is_nothrow_move_constructible<C>::value, "");
  57 #endif
  58     }
  59
  60   return 0;
  61 }