1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // <queue>
11 // UNSUPPORTED: c++98, c++03, c++11, c++14
12 // UNSUPPORTED: libcpp-no-deduction-guides
13
14 #include <queue>
15 #include <list>
16 #include <iterator>
17 #include <cassert>
18 #include <cstddef>
19
20
main()21 int main()
22 {
23 // Test the explicit deduction guides
24 {
25 // queue(const Container&, const Alloc&);
26 // The '45' is not an allocator
27 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'}}
28 }
29
30 {
31 // queue(const queue&, const Alloc&);
32 // The '45' is not an allocator
33 std::queue<int> source;
34 std::queue que(source, 45); // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'queue'}}
35 }
36
37 // Test the implicit deduction guides
38 {
39 // queue (allocator &)
40 std::queue que((std::allocator<int>())); // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'queue'}}
41 // Note: The extra parens are necessary, since otherwise clang decides it is a function declaration.
42 // Also, we can't use {} instead of parens, because that constructs a
43 // stack<allocator<int>, allocator<allocator<int>>>
44 }
45
46 }
47