libcxx/test/std/containers/sequences/vector.bool/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 // UNSUPPORTED: c++03
   9
  10 // <vector>
  11
  12 // vector<bool>()
  13 //        noexcept(is_nothrow_default_constructible<allocator_type>::value);
  14
  15 // This tests a conforming extension
  16 // For vector<>, this was added to the standard by N4258,
  17 //   but vector<bool> was not changed.
  18
  19
  20 #include <vector>
  21 #include <cassert>
  22
  23 #include "test_macros.h"
  24 #include "test_allocator.h"
  25
  26 template <class T>
  27 struct some_alloc
  28 {
  29     typedef T value_type;
  30     some_alloc(const some_alloc&);
  31 };
  32
  33 int main(int, char**)
  34 {
  35 #if defined(_LIBCPP_VERSION)
  36     {
  37         typedef std::vector<bool> C;
  38         static_assert(std::is_nothrow_default_constructible<C>::value, "");
  39     }
  40     {
  41         typedef std::vector<bool, test_allocator<bool>> C;
  42         static_assert(std::is_nothrow_default_constructible<C>::value, "");
  43     }
  44     {
  45         typedef std::vector<bool, other_allocator<bool>> C;
  46         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
  47     }
  48     {
  49         typedef std::vector<bool, some_alloc<bool>> C;
  50         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
  51     }
  52 #endif // _LIBCPP_VERSION
  53
  54   return 0;
  55 }