libstdc++-v3/testsuite/20_util/to_address/1_neg.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++20 } }
  19 // { dg-error "not a function pointer" "" { target *-*-* } 0 }
  20
  21 #include <memory>
  22
  23 struct P
  24 {
  25   using element_type = void();
  26
  27   element_type* operator->() const noexcept
  28   { return nullptr; }
  29 };
  30
  31 void test01()
  32 {
  33   P p;
  34   std::to_address(p); // { dg-error "" }
  35 }