libstdc++-v3/testsuite/20_util/declval/requirements/1_neg.cc

   1 // { dg-do compile { target c++11 } }
   2 // 2009-11-12  Paolo Carlini  <paolo.carlini@oracle.com>
   3 //
   4 // Copyright (C) 2009-2021 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11 //
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 // { dg-error "declval.. must not be used" "" { target *-*-* } 0 }
  22
  23 #include <utility>
  24
  25 void test01()
  26 {
  27   std::declval<int>();          // { dg-error "required from here" }
  28 }