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