libstdc++-v3/testsuite/25_algorithms/search_n/58358.cc

   1 // Copyright (C) 2013-2025 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 run { target c++11 } }
  19
  20 // 25.1.9 [lib.alg.search]
  21
  22 #include <algorithm>
  23 #include <vector>
  24 #include <testsuite_hooks.h>
  25
  26 void test01()
  27 {
  28   std::vector<int> a{2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
  29   int count = 0;
  30   std::search_n(a.begin(), a.end(), 10, 1,
  31                 [&count](int t, int u) { ++count; return t == u; });
  32   // { dg-warning "ignoring return value" "" { target c++11 } 30 }
  33   VERIFY( count <= 11 );
  34 }
  35
  36 int main()
  37 {
  38   test01();
  39   return 0;
  40 }