libstdc++-v3/testsuite/25_algorithms/stable_partition/pr52822.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2012-2025 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 25.2.12 [lib.alg.partitions] Partitions.
  21
  22 #include <algorithm>
  23 #include <vector>
  24 #include <testsuite_hooks.h>
  25
  26 bool true_vector_pred(const std::vector<int>&) { return true; }
  27
  28 void
  29 test01()
  30 {
  31   std::vector<std::vector<int> > v(1);
  32   v[0].push_back(7);
  33   VERIFY( v[0].size() == 1 );
  34   std::stable_partition(v.begin(), v.end(), &true_vector_pred);
  35   VERIFY( v[0].size() == 1 );
  36 }
  37
  38 int
  39 main()
  40 {
  41   test01();
  42   return 0;
  43 }