libstdc++-v3/testsuite/23_containers/vector/capacity/shrink_to_fit2.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2011-2024 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 #include <vector>
  21 #include <testsuite_hooks.h>
  22 #include <testsuite_allocator.h>
  23
  24 using __gnu_test::propagating_allocator;
  25
  26 void test01()
  27 {
  28   typedef propagating_allocator<int, true> alloc_type;
  29   alloc_type alloc(5);
  30
  31   std::vector<int, alloc_type> v(10u, 1, alloc);
  32   v.reserve(100);
  33   VERIFY( v.size() < v.capacity() );
  34   v.shrink_to_fit();
  35   VERIFY( v.size() == v.capacity() );
  36   VERIFY( v.get_allocator().get_personality() == alloc.get_personality() );
  37 }
  38
  39 void test02()
  40 {
  41   typedef propagating_allocator<int, false> alloc_type;
  42   alloc_type alloc(5);
  43
  44   std::vector<int, alloc_type> v(10u, 1, alloc);
  45   v.reserve(100);
  46   VERIFY( v.size() < v.capacity() );
  47   v.shrink_to_fit();
  48   VERIFY( v.size() == v.capacity() );
  49   VERIFY( v.get_allocator().get_personality() == alloc.get_personality() );
  50 }
  51
  52 int main()
  53 {
  54   test01();
  55   test02();
  56   return 0;
  57 }