libcxx/test/std/containers/sequences/vector/vector.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 // <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 "MoveOnly.h"
  23 #include "test_allocator.h"
  24
  25 template <class T>
  26 struct some_alloc
  27 {
  28     typedef T value_type;
  29     some_alloc(const some_alloc&);
  30     void allocate(std::size_t);
  31 };
  32
  33 int main(int, char**)
  34 {
  35     {
  36         typedef std::vector<MoveOnly> C;
  37         static_assert(std::is_nothrow_move_constructible<C>::value, "");
  38     }
  39     {
  40         typedef std::vector<MoveOnly, test_allocator<MoveOnly>> C;
  41         static_assert(std::is_nothrow_move_constructible<C>::value, "");
  42     }
  43     {
  44         typedef std::vector<MoveOnly, other_allocator<MoveOnly>> C;
  45         static_assert(std::is_nothrow_move_constructible<C>::value, "");
  46     }
  47     {
  48         typedef std::vector<MoveOnly, some_alloc<MoveOnly>> C;
  49     //  In C++17, move constructors for allocators are not allowed to throw
  50 #if TEST_STD_VER > 14
  51         static_assert( std::is_nothrow_move_constructible<C>::value, "");
  52 #else
  53         static_assert(!std::is_nothrow_move_constructible<C>::value, "");
  54 #endif
  55     }
  56
  57   return 0;
  58 }