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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/std/ranges/subrange/tuple_like.cc
1 // Copyright (C) 2020-2022 Free Software Foundation, Inc.
3 // This file is part of the GNU ISO C++ Library. This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 3, or (at your option)
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING3. If not see
16 // <http://www.gnu.org/licenses/>.
18 // { dg-options "-std=gnu++2a" }
19 // { dg-do compile { target c++2a } }
23 using S1
= std::ranges::subrange
<int*>;
24 using S2
= std::ranges::subrange
<long*, void*>;
26 static_assert( std::tuple_size_v
<S1
> == 2 );
27 static_assert( std::tuple_size_v
<S2
> == 2 );
29 static_assert( std::same_as
<std::tuple_element_t
<0, S1
>, int*> );
30 static_assert( std::same_as
<std::tuple_element_t
<1, S1
>, int*> );
32 static_assert( std::same_as
<std::tuple_element_t
<0, const S1
>, int*> );
33 static_assert( std::same_as
<std::tuple_element_t
<1, const S1
>, int*> );
35 static_assert( std::same_as
<std::tuple_element_t
<0, S2
>, long*> );
36 static_assert( std::same_as
<std::tuple_element_t
<1, S2
>, void*> );
38 static_assert( std::same_as
<std::tuple_element_t
<0, const S2
>, long*> );
39 static_assert( std::same_as
<std::tuple_element_t
<1, const S2
>, void*> );
42 static_assert( std::same_as
<decltype(std::get
<0>(s1
)), int*> );
43 static_assert( std::same_as
<decltype(std::get
<1>(s1
)), int*> );
45 static_assert( std::same_as
<decltype(std::get
<0>(c1
)), int*> );
46 static_assert( std::same_as
<decltype(std::get
<1>(c1
)), int*> );
48 static_assert( std::same_as
<decltype(std::get
<0>(s2
)), long*> );
49 static_assert( std::same_as
<decltype(std::get
<1>(s2
)), void*> );
51 static_assert( std::same_as
<decltype(std::get
<0>(c2
)), long*> );
52 static_assert( std::same_as
<decltype(std::get
<1>(c2
)), void*> );