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 <list>
14#include <iterator>
15#include <cassert>
16#include <cstddef>
17
18
19int main(int, char**)
20{
21// Test the explicit deduction guides
22 {
23// queue(const Container&, const Alloc&);
24// The '45' is not an allocator
25 std::queue que(std::list<int>{1,2,3}, 45); // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'queue'}}
26 }
27
28 {
29// queue(const queue&, const Alloc&);
30// The '45' is not an allocator
31 std::queue<int> source;
32 std::queue que(source, 45); // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'queue'}}
33 }
34
35// Test the implicit deduction guides
36 {
37// queue (allocator &)
38 std::queue que((std::allocator<int>())); // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'queue'}}
39// Note: The extra parens are necessary, since otherwise clang decides it is a function declaration.
40// Also, we can't use {} instead of parens, because that constructs a
41// stack<allocator<int>, allocator<allocator<int>>>
42 }
43
44
45 return 0;
46}
47

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