c++/modules: Improve diagnostic when redeclaring builtin in module [PR102345]

[thirdparty/gcc.git] / libstdc++-v3 / testsuite / 27_io / basic_stringbuf / view / wchar_t / 1.cc

// Copyright (C) 2020-2024 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/>.

// 27.7.1.1  basic_stringbuf constructors  [lib.stringbuf.cons]

// { dg-do run { target c++20 } }

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

int
main()
{
  std::wstring s(L"This is a test");
  std::wstringbuf sbuf(s);
  VERIFY( sbuf.view() == s );
  return 0;
}