1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// <queue>
10// UNSUPPORTED: c++03, c++11, c++14
11
12#include <queue>
13#include <deque>
14#include <iterator>
15#include <cassert>
16#include <cstddef>
17
18int main(int, char**) {
19 // Test the explicit deduction guides
20 {
21 // queue(Compare, Container, const Alloc);
22 // The '45' is not an allocator
23 std::priority_queue pri(std::greater<int>(), std::deque<int>({1, 2, 3}), 45);
24 // expected-error-re@-1 {{no viable constructor or deduction guide for deduction of template arguments of '{{(std::)?}}priority_queue'}}
25 }
26
27 {
28 // queue(const queue&, const Alloc&);
29 // The '45' is not an allocator
30 std::priority_queue<int> source;
31 std::priority_queue pri(source, 45);
32 // expected-error-re@-1 {{no viable constructor or deduction guide for deduction of template arguments of '{{(std::)?}}priority_queue'}}
33 }
34
35 {
36 // priority_queue(Iter, Iter, Comp)
37 // int is not an iterator
38 std::priority_queue pri(15, 17, std::greater< double>());
39 // expected-error-re@-1 {{no viable constructor or deduction guide for deduction of template arguments of '{{(std::)?}}priority_queue'}}
40 }
41
42 {
43 // priority_queue(Iter, Iter, Comp, Container)
44 // float is not an iterator
45 std::priority_queue pri(23.f, 2.f, std::greater<float>(), std::deque< float>());
46 // expected-error-re@-1 {{no viable constructor or deduction guide for deduction of template arguments of '{{(std::)?}}priority_queue'}}
47 }
48
49 // Test the implicit deduction guides
50 {
51 // priority_queue (allocator &)
52 std::priority_queue pri((std::allocator< int>()));
53 // expected-error-re@-1 {{no viable constructor or deduction guide for deduction of template arguments of '{{(std::)?}}priority_queue'}}
54 // Note: The extra parens are necessary, since otherwise clang decides it is a function declaration.
55 // Also, we can't use {} instead of parens, because that constructs a
56 // stack<allocator<int>, allocator<allocator<int>>>
57 }
58
59 return 0;
60}
61

source code of libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/deduct.verify.cpp