libstdc++-v3/testsuite/20_util/is_unbounded_array/value.cc

   1 // { dg-options "-std=gnu++2a" }
   2 // { dg-do compile { target c++2a } }
   3
   4 // Copyright (C) 2019-2023 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11 //
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <type_traits>
  22 #include <testsuite_tr1.h>
  23
  24 #ifndef __cpp_lib_bounded_array_traits
  25 # error "Feature test macro for is_unbounded_array is missing"
  26 #elif __cpp_lib_bounded_array_traits < 201902L
  27 # error "Feature test macro for is_unbounded_array has wrong value"
  28 #endif
  29
  30 void test01()
  31 {
  32   using std::is_unbounded_array;
  33   using namespace __gnu_test;
  34
  35   static_assert(test_category<is_unbounded_array, int[2]>(false), "");
  36   static_assert(test_category<is_unbounded_array, int[]>(true), "");
  37   static_assert(test_category<is_unbounded_array, int[2][3]>(false), "");
  38   static_assert(test_category<is_unbounded_array, int[][3]>(true), "");
  39   static_assert(test_category<is_unbounded_array, float*[2]>(false), "");
  40   static_assert(test_category<is_unbounded_array, float*[]>(true), "");
  41   static_assert(test_category<is_unbounded_array, float*[2][3]>(false), "");
  42   static_assert(test_category<is_unbounded_array, float*[][3]>(true), "");
  43   static_assert(test_category<is_unbounded_array, ClassType[2]>(false), "");
  44   static_assert(test_category<is_unbounded_array, ClassType[]>(true), "");
  45   static_assert(test_category<is_unbounded_array, ClassType[2][3]>(false), "");
  46   static_assert(test_category<is_unbounded_array, ClassType[][3]>(true), "");
  47   static_assert(test_category<is_unbounded_array, IncompleteClass[2][3]>(false), "");
  48   static_assert(test_category<is_unbounded_array, IncompleteClass[][3]>(true), "");
  49   static_assert(test_category<is_unbounded_array, int(*)[2]>(false), "");
  50   static_assert(test_category<is_unbounded_array, int(*)[]>(false), "");
  51   static_assert(test_category<is_unbounded_array, int(&)[2]>(false), "");
  52   static_assert(test_category<is_unbounded_array, int(&)[]>(false), "");
  53
  54   // Sanity check.
  55   static_assert(test_category<is_unbounded_array, ClassType>(false), "");
  56   static_assert(test_category<is_unbounded_array, IncompleteClass>(false), "");
  57   static_assert(test_category<is_unbounded_array, IncompleteUnion>(false), "");
  58 }
  59
  60 template <class... T> void pos()
  61 {
  62   static_assert((std::is_unbounded_array_v<T> &&...));
  63 }
  64
  65 template <class... T> void neg()
  66 {
  67   static_assert((!std::is_unbounded_array_v<T> &&...));
  68 }
  69
  70 void test02()
  71 {
  72   using namespace __gnu_test;
  73   pos<int[], int[][3], float*[], float*[][3], ClassType[],
  74       ClassType[][3]>();
  75   neg<int[2], int[2][3], float*[2], float*[2][3], ClassType[2],
  76       ClassType[2][3], int(*)[2], int(&)[], int(*)[2], int(&)[], ClassType>();
  77 }