libstdc++-v3/testsuite/21_strings/basic_string/capacity/wchar_t/shrink_to_fit.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // 2010-01-08  Paolo Carlini  <paolo.carlini@oracle.com>
   4
   5 // Copyright (C) 2010-2022 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 #include <string>
  23 #include <testsuite_hooks.h>
  24
  25 // libstdc++/42573
  26 void test01()
  27 {
  28   std::wstring s(100, L'a');
  29   s.push_back(L'b');
  30   s.push_back(L'b');
  31   VERIFY( s.size() < s.capacity() );
  32   s.shrink_to_fit();
  33   VERIFY( s.size() == s.capacity() );
  34 }
  35
  36 int main()
  37 {
  38   test01();
  39   return 0;
  40 }