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

   1 // Copyright (C) 2013-2019 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-require-debug-mode "" }
  19
  20 #include <vector>
  21 #include <testsuite_hooks.h>
  22
  23 void test02()
  24 {
  25   using namespace __gnu_debug;
  26
  27   std::vector<int> v1(3, 1);
  28   VERIFY( !__check_singular(v1.begin()) );
  29   std::vector<int>::iterator it = v1.begin();
  30   VERIFY( !__check_singular(it) );
  31
  32   VERIFY( !__check_singular(v1.end()) );
  33   it = v1.end();
  34   VERIFY( !__check_singular(it) );
  35
  36   v1.clear();
  37
  38   VERIFY( it._M_singular() );
  39   VERIFY( __check_singular(it) );
  40
  41   it = v1.end();
  42   VERIFY( !it._M_singular() );
  43   VERIFY( !__check_singular(it) );
  44 }
  45
  46 int main()
  47 {
  48   test02();
  49   return 0;
  50 }