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// { dg-options "-std=gnu++17" }
// { dg-do compile { target c++17 } }
// Copyright (C) 2016-2018 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#include <type_traits>
#include <testsuite_tr1.h>
void test01()
{
using std::has_unique_object_representations;
using __gnu_test::test_category;
// Positive tests.
static_assert(test_category<has_unique_object_representations,
char>(true), "");
static_assert(test_category<has_unique_object_representations,
unsigned char>(true), "");
static_assert(test_category<has_unique_object_representations,
signed char>(true), "");
static_assert(test_category<has_unique_object_representations,
unsigned>(true), "");
static_assert(test_category<has_unique_object_representations,
bool>(true), "");
enum E : unsigned { };
static_assert(test_category<has_unique_object_representations,
E>(true), "");
static_assert(test_category<has_unique_object_representations,
unsigned[3]>(true), "");
static_assert(test_category<has_unique_object_representations,
unsigned[3][2]>(true), "");
static_assert(test_category<has_unique_object_representations,
unsigned[]>(true), "");
static_assert(test_category<has_unique_object_representations,
unsigned[][2]>(true), "");
static_assert(test_category<has_unique_object_representations,
E[3]>(true), "");
static_assert(test_category<has_unique_object_representations,
E[3][2]>(true), "");
static_assert(test_category<has_unique_object_representations,
E[]>(true), "");
static_assert(test_category<has_unique_object_representations,
E[][2]>(true), "");
struct Padded {
char c1;
alignas(4) char c2;
};
struct Bitfield {
int i : 3;
};
struct Aligned {
alignas(4) char c;
};
// Negative tests.
static_assert(test_category<has_unique_object_representations,
void>(false), "");
static_assert(test_category<has_unique_object_representations,
float>(false), ""); // implementation-defined
static_assert(test_category<has_unique_object_representations,
Padded>(false), "");
static_assert(test_category<has_unique_object_representations,
Padded[2]>(false), "");
static_assert(test_category<has_unique_object_representations,
Padded[2][1]>(false), "");
static_assert(test_category<has_unique_object_representations,
Padded[]>(false), "");
static_assert(test_category<has_unique_object_representations,
Padded[][1]>(false), "");
static_assert(test_category<has_unique_object_representations,
Bitfield>(false), "");
static_assert(test_category<has_unique_object_representations,
Bitfield[2]>(false), "");
static_assert(test_category<has_unique_object_representations,
Bitfield[2][1]>(false), "");
static_assert(test_category<has_unique_object_representations,
Bitfield[]>(false), "");
static_assert(test_category<has_unique_object_representations,
Bitfield[][1]>(false), "");
static_assert(test_category<has_unique_object_representations,
Aligned>(false), "");
static_assert(test_category<has_unique_object_representations,
Aligned[2]>(false), "");
static_assert(test_category<has_unique_object_representations,
Aligned[2][1]>(false), "");
static_assert(test_category<has_unique_object_representations,
Aligned[]>(false), "");
static_assert(test_category<has_unique_object_representations,
Aligned[][1]>(false), "");
}
void
test02()
{
using std::has_unique_object_representations;
using std::has_unique_object_representations_v;
static_assert(has_unique_object_representations_v<int>
== has_unique_object_representations<int>::value);
static_assert(has_unique_object_representations_v<void>
== has_unique_object_representations<void>::value);
static_assert(has_unique_object_representations_v<float>
== has_unique_object_representations<float>::value);
}
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