libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/constraints.compile.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 // UNSUPPORTED: c++03, c++11, c++14, c++17
  10
  11 // <iterator>
  12
  13 // template<semiregular S>
  14 //   class move_sentinel;
  15
  16 #include <iterator>
  17
  18 template<class T>
  19 concept HasMoveSentinel = requires {
  20   typename std::move_sentinel<T>;
  21 };
  22
  23 struct Semiregular {};
  24
  25 struct NotSemiregular {
  26   NotSemiregular(int);
  27 };
  28
  29 static_assert( HasMoveSentinel<int>);
  30 static_assert( HasMoveSentinel<int*>);
  31 static_assert( HasMoveSentinel<Semiregular>);
  32 static_assert(!HasMoveSentinel<NotSemiregular>);