gdb/unittests/basic_string_view/element_access/char/1.cc

// { dg-options "-std=gnu++17" }

// Copyright (C) 2013-2020 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 3, 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 COPYING3.  If not see
// <http://www.gnu.org/licenses/>.

// basic_string element access

namespace element_access_1 {

static void
test01 ()
{
  typedef gdb::string_view::size_type csize_type;
  typedef gdb::string_view::const_reference cref;
  typedef gdb::string_view::reference ref;
  csize_type csz01;

  const gdb::string_view str01("tamarindo, costa rica");
  gdb::string_view str02("41st street beach, capitola, california");
  gdb::string_view str03;

  // const_reference operator[] (size_type pos) const;
  csz01 = str01.size();
  cref cref1 = str01[csz01 - 1];
  VERIFY( cref1 == 'a' );
  // Undefined behavior at size().
  //cref cref2 = str01[csz01];
  //VERIFY( cref2 == char() );

  // const_reference at(size_type pos) const;
  csz01 = str01.size();
  cref cref3 = str01.at(csz01 - 1);
  VERIFY( cref3 == 'a' );
  try
  {
    str01.at(csz01);
    VERIFY( false ); // Should not get here, as exception thrown.
  }
  catch (gdb_exception& fail)
  {
    VERIFY( true );
  }
  catch (...)
  {
    VERIFY( false );
  }
}

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

} // namespace element_access_1