libstdc++: Add test for using istreambuf_iterator with sentinel
This test was supposed to be added two months ago as part of commit
120e873484
but was omitted by mistake.
* testsuite/24_iterators/istreambuf_iterator/sentinel.cc: New test.
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2020-04-20 Jonathan Wakely <jwakely@redhat.com>
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* testsuite/24_iterators/istreambuf_iterator/sentinel.cc: New test.
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* testsuite/20_util/is_constructible/51185.cc: Make test class a
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non-aggregate so that the test verifies the same thing in all -std
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modes.
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// { dg-options "-std=gnu++2a" }
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// { dg-do run { target c++2a } }
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// Copyright (C) 2020 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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#include <iterator>
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#include <sstream>
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#include <testsuite_hooks.h>
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void
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test01()
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{
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static_assert( std::sentinel_for<std::default_sentinel_t,
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std::istreambuf_iterator<char>> );
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std::istreambuf_iterator<char> i = std::default_sentinel;
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VERIFY( i == std::default_sentinel );
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VERIFY( std::default_sentinel == i );
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}
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void
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test02()
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{
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std::istringstream in("abc");
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std::istreambuf_iterator<char> iter(in);
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VERIFY( iter != std::default_sentinel );
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VERIFY( std::default_sentinel != iter );
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std::next(iter, 3);
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VERIFY( iter == std::default_sentinel );
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VERIFY( std::default_sentinel == iter );
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}
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int main()
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{
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test01();
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test02();
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}
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