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 26 constexpr 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 45 int 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