libstdc++-v3/testsuite/20_util/bind/83427.cc

   1 // Copyright (C) 2017-2023 Free Software Foundation, Inc.
   2 //
   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)
   7 // any later version.
   8
   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.
  13
  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/>.
  17
  18 // { dg-do compile { target c++17 } }
  19
  20 #include <functional>
  21
  22 // PR libstdc++/83427
  23
  24 int f() noexcept { return 0; }
  25 auto b = std::bind(f);
  26 static_assert(std::is_same_v<decltype(b)::result_type, int>);
  27
  28 struct X { long f() const & noexcept { return 0L; } };
  29 auto b2 = std::bind(&X::f, X{});
  30 static_assert(std::is_same_v<decltype(b2)::result_type, long>);