libcxx/test/std/containers/sequences/list/list.cons/default_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 // <list>
  10
  11 // list()
  12 //        noexcept(is_nothrow_default_constructible<allocator_type>::value);
  13
  14 // This tests a conforming extension
  15
  16 // UNSUPPORTED: c++03
  17
  18 #include <list>
  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 #if defined(_LIBCPP_VERSION)
  36     {
  37         typedef std::list<MoveOnly> C;
  38         static_assert(std::is_nothrow_default_constructible<C>::value, "");
  39     }
  40     {
  41         typedef std::list<MoveOnly, test_allocator<MoveOnly>> C;
  42         static_assert(std::is_nothrow_default_constructible<C>::value, "");
  43     }
  44 #endif // _LIBCPP_VERSION
  45     {
  46         typedef std::list<MoveOnly, other_allocator<MoveOnly>> C;
  47         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
  48     }
  49     {
  50         typedef std::list<MoveOnly, some_alloc<MoveOnly>> C;
  51         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
  52     }
  53
  54   return 0;
  55 }