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// Copyright (C) 2015 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-options "-std=gnu++14" }
#include <set>
#include <testsuite_hooks.h>
struct Cmp
{
typedef void is_transparent;
bool operator()(int i, long l) const { return i < l; }
bool operator()(long l, int i) const { return l < i; }
bool operator()(int i, int j) const { ++count; return i < j; }
static int count;
};
int Cmp::count = 0;
using test_type = std::set<int, Cmp>;
test_type x{ 1, 3, 5 };
const test_type& cx = x;
void
test01()
{
Cmp::count = 0;
auto it = x.find(1L);
VERIFY( it != x.end() && *it == 1 );
it = x.find(2L);
VERIFY( it == x.end() );
auto cit = cx.find(3L);
VERIFY( cit != cx.end() && *cit == 3 );
cit = cx.find(2L);
VERIFY( cit == cx.end() );
VERIFY( Cmp::count == 0);
static_assert(std::is_same<decltype(it), test_type::iterator>::value,
"find returns iterator");
static_assert(std::is_same<decltype(cit), test_type::const_iterator>::value,
"const find returns const_iterator");
}
void
test02()
{
Cmp::count = 0;
auto n = x.count(1L);
VERIFY( n == 1 );
n = x.count(2L);
VERIFY( n == 0 );
auto cn = cx.count(3L);
VERIFY( cn == 1 );
cn = cx.count(2L);
VERIFY( cn == 0 );
VERIFY( Cmp::count == 0);
}
void
test03()
{
Cmp::count = 0;
auto it = x.lower_bound(1L);
VERIFY( it != x.end() && *it == 1 );
it = x.lower_bound(2L);
VERIFY( it != x.end() && *it == 3 );
auto cit = cx.lower_bound(1L);
VERIFY( cit != cx.end() && *cit == 1 );
cit = cx.lower_bound(2L);
VERIFY( cit != cx.end() && *cit == 3 );
VERIFY( Cmp::count == 0);
}
void
test04()
{
Cmp::count = 0;
auto it = x.upper_bound(1L);
VERIFY( it != x.end() && *it == 3 );
it = x.upper_bound(5L);
VERIFY( it == x.end() );
auto cit = cx.upper_bound(1L);
VERIFY( cit != cx.end() && *cit == 3 );
cit = cx.upper_bound(5L);
VERIFY( cit == cx.end() );
VERIFY( Cmp::count == 0);
}
void
test05()
{
Cmp::count = 0;
auto it = x.equal_range(1L);
VERIFY( it.first != it.second && *it.first == 1 );
it = x.equal_range(2L);
VERIFY( it.first == it.second && it.first != x.end() );
auto cit = cx.equal_range(1L);
VERIFY( cit.first != cit.second && *cit.first == 1 );
cit = cx.equal_range(2L);
VERIFY( cit.first == cit.second && cit.first != cx.end() );
VERIFY( Cmp::count == 0);
}
void
test06()
{
// https://gcc.gnu.org/ml/libstdc++/2015-01/msg00176.html
// Verify the new function template overloads do not cause problems
// when the comparison function is not transparent.
struct I
{
int i;
operator int() const { return i; }
};
std::set<int> s;
I i = { };
s.find(i);
}
int
main()
{
test01();
test02();
test03();
test04();
test05();
test06();
}
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