libstdc++-v3/testsuite/23_containers/unordered_set/debug/debug_functions.cc

   1 // Copyright (C) 2013-2021 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-do run { target c++11 } }
  19 // { dg-require-debug-mode "" }
  20
  21 #include <unordered_set>
  22 #include <testsuite_hooks.h>
  23
  24 void test02()
  25 {
  26   using namespace __gnu_debug;
  27
  28   std::unordered_set<int> u = { 0, 1, 2 };
  29
  30   VERIFY( !__check_singular(u.end()) );
  31   auto it = u.end();
  32   VERIFY( !__check_singular(it) );
  33
  34   VERIFY( !__check_singular(u.begin()) );
  35   it = u.begin();
  36   VERIFY( !__check_singular(it) );
  37
  38   u.clear();
  39
  40   VERIFY( it._M_singular() );
  41   VERIFY( __check_singular(it) );
  42
  43   it = u.end();
  44   VERIFY( !it._M_singular() );
  45   VERIFY( !__check_singular(it) );
  46
  47   u = { 0, 1, 2 };
  48
  49   auto bucket = u.bucket(0);
  50   VERIFY( !__check_singular(u.begin(bucket)) );
  51   auto lit = u.begin(bucket);
  52   VERIFY( !__check_singular(lit) );
  53
  54   VERIFY( !__check_singular(u.end(bucket)) );
  55
  56   u.clear();
  57   VERIFY( __check_singular(lit) );
  58 }
  59
  60 int main()
  61 {
  62   test02();
  63   return 0;
  64 }