re PR testsuite/39696 (gcc.dg/tree-ssa/ssa-ccp-25.c scan-tree-dump doesn't work on...

[thirdparty/gcc.git] / libstdc++-v3 / testsuite / 27_io / basic_stringbuf / seekpos / char / 3.cc

// 2003-05-30  Paolo Carlini  <pcarlini@unitus.it>

// Copyright (C) 2003 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING.  If not, write to the Free
// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// USA.

#include <sstream>
#include <testsuite_hooks.h>

void test01() 
{
  bool test __attribute__((unused)) = true;
  using namespace std;
  typedef stringbuf::pos_type pos_type;
  typedef stringbuf::off_type off_type;

  stringbuf strb_01(ios_base::out);

  strb_01.sputn("broken peak", 11);
  pos_type pt_1 = strb_01.pubseekoff(0, ios_base::end, ios_base::out);

  // In general, according to 27.7.1.3,14, the below has undefined
  // behaviour since pt_1 + off_type(1) doesn't come from a
  // previous pubseekpos or pubseekoff. However, given v3 implementation,
  // this was useful to expose a bug in pubseekpos checks.
  pos_type pt_2 = strb_01.pubseekpos(pt_1 + off_type(1), ios_base::out);
  VERIFY( pt_2 == pos_type(off_type(-1)) );
}

int main()
{
  test01();
  return 0;
}