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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include <cstddef>
#include <type_traits>
#include <cstdlib>
#include <new>
#include <climits>
template <class C>
class test_compare
: private C
int data_;
explicit test_compare(int data = 0) : data_(data) {}
typename C::result_type
operator()(typename std::add_lvalue_reference<const typename C::first_argument_type>::type x,
typename std::add_lvalue_reference<const typename C::second_argument_type>::type y) const
{return C::operator()(x, y);}
bool operator==(const test_compare& c) const
{return data_ == c.data_;}
template <class C>
class non_const_compare
// operator() deliberately not marked as 'const'
bool operator()(const C& x, const C& y) { return x < y; }
#endif // TEST_COMPARE_H