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// XFAIL: target={{.+}}-zos{{.*}}
16
17#include <new>
18#include <cassert>
19#include <cstddef>
20#include <string>
21#include <type_traits>
22#include <typeinfo>
23
24#include "test_macros.h"
25
26constexpr bool test() {
27 static_assert(std::is_enum<std::align_val_t>::value, "");
28 static_assert(std::is_same<std::underlying_type<std::align_val_t>::type, std::size_t>::value, "");
29 static_assert(!std::is_constructible<std::align_val_t, std::size_t>::value, "");
30 static_assert(!std::is_constructible<std::size_t, std::align_val_t>::value, "");
31
32 {
33 auto a = std::align_val_t(0);
34 auto b = std::align_val_t(32);
35 auto c = std::align_val_t(-1);
36 assert(a != b);
37 assert(a == std::align_val_t(0));
38 assert(b == std::align_val_t(32));
39 assert(static_cast<std::size_t>(c) == static_cast<std::size_t>(-1));
40 }
41
42 return true;
43}
44
45int main(int, char**) {
46 test();
47 static_assert(test(), "");
48
49#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_RTTI)
50 {
51 // Check that libc++ doesn't define align_val_t in a versioning namespace.
52 // And that it mangles the same in C++03 through C++17
53# ifdef _MSC_VER
54 // MSVC uses a different C++ ABI with a different name mangling scheme.
55 // The type id name doesn't seem to contain the mangled form at all.
56 assert(typeid(std::align_val_t).name() == std::string("enum std::align_val_t"));
57# else
58 assert(typeid(std::align_val_t).name() == std::string("St11align_val_t"));
59# endif
60 }
61#endif
62
63 return 0;
64}
65

source code of libcxx/test/std/language.support/support.dynamic/align_val_t.pass.cpp