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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <queue>
// UNSUPPORTED: c++03, c++11, c++14
// UNSUPPORTED: libcpp-no-deduction-guides
#include <queue>
#include <deque>
#include <iterator>
#include <cassert>
#include <cstddef>
int main(int, char**)
{
// Test the explicit deduction guides
{
// queue(Compare, Container, const Alloc);
// The '45' is not an allocator
std::priority_queue pri(std::greater<int>(), std::deque<int>({1,2,3}), 45); // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'priority_queue'}}
}
{
// queue(const queue&, const Alloc&);
// The '45' is not an allocator
std::priority_queue<int> source;
std::priority_queue pri(source, 45); // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'priority_queue'}}
}
{
// priority_queue(Iter, Iter, Comp)
// int is not an iterator
std::priority_queue pri(15, 17, std::greater<double>()); // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'priority_queue'}}
}
{
// priority_queue(Iter, Iter, Comp, Container)
// float is not an iterator
std::priority_queue pri(23.f, 2.f, std::greater<float>(), std::deque<float>()); // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'priority_queue'}}
}
// Test the implicit deduction guides
{
// priority_queue (allocator &)
std::priority_queue pri((std::allocator<int>())); // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'priority_queue'}}
// Note: The extra parens are necessary, since otherwise clang decides it is a function declaration.
// Also, we can't use {} instead of parens, because that constructs a
// stack<allocator<int>, allocator<allocator<int>>>
}
return 0;
}
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