main/libstdc++-v3/testsuite/23_containers/deque/debug/shrink_to_fit.cc

   1 // Copyright (C) 2011-2013 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 // { dg-options "-std=gnu++0x" }
  20 // { dg-do run { xfail *-*-* } }
  21
  22 #include <deque>
  23
  24 void test01()
  25 {
  26   using std::deque;
  27   deque<int> d;
  28   // Lets generate a hole at the begining of the deque:
  29   d.push_back(0);
  30   d.push_back(1);
  31   d.pop_front();
  32   deque<int>::iterator it;
  33   do
  34     {
  35       d.push_back(2);
  36       it = d.begin();
  37       auto old_abegin = &*d.begin();
  38       d.shrink_to_fit();
  39       if (&*d.begin() != old_abegin)
  40         break;
  41     }
  42   while (true);
  43   // Following line should assert
  44   *it = 2;
  45 }
  46
  47 int main()
  48 {
  49   test01();
  50   return 0;
  51 }