libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/add_cv.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 // type_traits
  10
  11 // add_cv
  12
  13 #include <type_traits>
  14
  15 #include "test_macros.h"
  16
  17 template <class T, class U>
  18 void test_add_cv_imp()
  19 {
  20     ASSERT_SAME_TYPE(const volatile U, typename std::add_cv<T>::type);
  21 #if TEST_STD_VER > 11
  22     ASSERT_SAME_TYPE(const volatile U,        std::add_cv_t<T>);
  23 #endif
  24 }
  25
  26 template <class T>
  27 void test_add_cv()
  28 {
  29     test_add_cv_imp<T, const volatile T>();
  30     test_add_cv_imp<const T, const volatile T>();
  31     test_add_cv_imp<volatile T, volatile const T>();
  32     test_add_cv_imp<const volatile T, const volatile T>();
  33 }
  34
  35 int main(int, char**)
  36 {
  37     test_add_cv<void>();
  38     test_add_cv<int>();
  39     test_add_cv<int[3]>();
  40     test_add_cv<int&>();
  41     test_add_cv<const int&>();
  42     test_add_cv<int*>();
  43     test_add_cv<const int*>();
  44
  45   return 0;
  46 }