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libstdc++: Add test for using istreambuf_iterator with sentinel

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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.
This commit is contained in:
Jonathan Wakely 2020-04-20 22:06:32 +01:00
parent 0ea89b1578
commit 86119f1417
2 changed files with 55 additions and 0 deletions
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2
libstdc++-v3/ChangeLog
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@ -1,5 +1,7 @@
2020-04-20 Jonathan Wakely <jwakely@redhat.com>
* testsuite/24_iterators/istreambuf_iterator/sentinel.cc: New test.
* testsuite/20_util/is_constructible/51185.cc: Make test class a
non-aggregate so that the test verifies the same thing in all -std
modes.

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libstdc++-v3/testsuite/24_iterators/istreambuf_iterator/sentinel.cc Normal file
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// { dg-options "-std=gnu++2a" }
// { dg-do run { target c++2a } }
// Copyright (C) 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/>.
#include <iterator>
#include <sstream>
#include <testsuite_hooks.h>
void
test01()
{
static_assert( std::sentinel_for<std::default_sentinel_t,
std::istreambuf_iterator<char>> );
std::istreambuf_iterator<char> i = std::default_sentinel;
VERIFY( i == std::default_sentinel );
VERIFY( std::default_sentinel == i );
}
void
test02()
{
std::istringstream in("abc");
std::istreambuf_iterator<char> iter(in);
VERIFY( iter != std::default_sentinel );
VERIFY( std::default_sentinel != iter );
std::next(iter, 3);
VERIFY( iter == std::default_sentinel );
VERIFY( std::default_sentinel == iter );
}
int main()
{
test01();
test02();
}