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 
19 int 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