libstdc++-v3/testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc

   1 // Copyright (C) 2020-2021 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-options "-std=gnu++2a" }
  19 // { dg-do compile { target c++2a xfail *-*-* } }
  20 // { dg-require-debug-mode { } }
  21
  22 #include <algorithm>
  23 #include <array>
  24
  25 constexpr bool
  26 test()
  27 {
  28   constexpr std::array<int, 12> ca0{{0, 1, 2, 3, 4, 5, 6, 5, 8, 9, 10, 11}};
  29
  30   const auto it = std::lower_bound(ca0.begin(), ca0.end(), 6, std::less<int>());
  31
  32   return true;
  33 }
  34
  35 static_assert(test()); // { dg-error "" }
  36
  37 // { dg-prune-output "failed_assertion" }
  38 // { dg-prune-output "in 'constexpr'" }