libcxx/test/std/language.support/support.dynamic/align_val_t.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 // enum class align_val_t : size_t {}
  10
  11 // UNSUPPORTED: c++03, c++11, c++14
  12
  13 // Libc++ when built for z/OS doesn't contain the aligned allocation functions,
  14 // nor does the dynamic library shipped with z/OS.
  15 // UNSUPPORTED: target={{.+}}-zos{{.*}}
  16
  17 #include <new>
  18 #include <type_traits>
  19
  20 #include "test_macros.h"
  21
  22 int main(int, char**) {
  23   {
  24     static_assert(std::is_enum<std::align_val_t>::value, "");
  25     static_assert(std::is_same<std::underlying_type<std::align_val_t>::type, std::size_t>::value, "");
  26     static_assert(!std::is_constructible<std::align_val_t, std::size_t>::value, "");
  27     static_assert(!std::is_constructible<std::size_t, std::align_val_t>::value, "");
  28   }
  29   {
  30     constexpr auto a = std::align_val_t(0);
  31     constexpr auto b = std::align_val_t(32);
  32     constexpr auto c = std::align_val_t(-1);
  33     static_assert(a != b, "");
  34     static_assert(a == std::align_val_t(0), "");
  35     static_assert(b == std::align_val_t(32), "");
  36     static_assert(static_cast<std::size_t>(c) == (std::size_t)-1, "");
  37   }
  38
  39   return 0;
  40 }