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 // UNSUPPORTED: c++03, c++11, c++14, c++17
10 
11 // template<class T>
12 // concept incrementable;
13 
14 #include <iterator>
15 
16 #include <concepts>
17 
18 // clang-format off
19 template<std::weakly_incrementable I>
20 requires std::regular<I>
check_subsumption()21 constexpr bool check_subsumption() {
22   return false;
23 }
24 
25 template<std::incrementable>
check_subsumption()26 constexpr bool check_subsumption() {
27   return true;
28 }
29 // clang-format on
30 
31 static_assert(check_subsumption<int*>());
32