| //===----------------------------------------------------------------------===// |
| // |
| // 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++98, 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; |
| } |