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PR64903 fix number of predicate tests in std::is_partitioned

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PR libstdc++/64903
	* include/bits/stl_algo.h (is_partioned): Don't retest the partition
	point.
	* testsuite/25_algorithms/is_partitioned/2.cc: New test.

From-SVN: r244661
This commit is contained in:
Jonathan Wakely 2017-01-19 23:30:18 +00:00 committed by Jonathan Wakely
parent 945a01f921
commit c4e5baa663
3 changed files with 53 additions and 0 deletions
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5
libstdc++-v3/ChangeLog
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@ -1,5 +1,10 @@
2017-01-19 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/64903
* include/bits/stl_algo.h (is_partioned): Don't retest the partition
point.
* testsuite/25_algorithms/is_partitioned/2.cc: New test.
* doc/xml/manual/abi.xml: Fix typo.
* doc/html/manual/abi.html: Likewise.

3
libstdc++-v3/include/bits/stl_algo.h
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@ -583,6 +583,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
_Predicate __pred)
{
__first = std::find_if_not(__first, __last, __pred);
if (__first == __last)
return true;
std::advance(__first, 1);
return std::none_of(__first, __last, __pred);
}

45
libstdc++-v3/testsuite/25_algorithms/is_partitioned/2.cc Normal file
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@ -0,0 +1,45 @@
// Copyright (C) 2017 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/>.
// { dg-do run { target c++11 } }
#include <algorithm>
#include <testsuite_hooks.h>
// PR libstdc++/64903
int count;
struct pred
{
bool operator()(int i) const { ++count; return i < 5; }
};
void
test01()
{
int i[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
bool result = std::is_partitioned(i, i + 10, pred());
VERIFY( result );
VERIFY( count == 10 );
}
int
main()
{
test01();
}