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
18
main(int,char **)19 int main(int, char**)
20 {
21 // Test the explicit deduction guides
22 {
23 // queue(Compare, Container, const Alloc);
24 // The '45' is not an allocator
25 std::priority_queue pri(std::greater<int>(), std::deque<int>({1,2,3}), 45); // expected-error-re {{no viable constructor or deduction guide for deduction of template arguments of '{{(std::)?}}priority_queue'}}
26 }
27
28 {
29 // queue(const queue&, const Alloc&);
30 // The '45' is not an allocator
31 std::priority_queue<int> source;
32 std::priority_queue pri(source, 45); // expected-error-re {{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>()); // expected-error-re {{no viable constructor or deduction guide for deduction of template arguments of '{{(std::)?}}priority_queue'}}
39 }
40
41 {
42 // priority_queue(Iter, Iter, Comp, Container)
43 // float is not an iterator
44 std::priority_queue pri(23.f, 2.f, std::greater<float>(), std::deque<float>()); // expected-error-re {{no viable constructor or deduction guide for deduction of template arguments of '{{(std::)?}}priority_queue'}}
45 }
46
47 // Test the implicit deduction guides
48 {
49 // priority_queue (allocator &)
50 std::priority_queue pri((std::allocator<int>())); // expected-error-re {{no viable constructor or deduction guide for deduction of template arguments of '{{(std::)?}}priority_queue'}}
51 // Note: The extra parens are necessary, since otherwise clang decides it is a function declaration.
52 // Also, we can't use {} instead of parens, because that constructs a
53 // stack<allocator<int>, allocator<allocator<int>>>
54 }
55
56
57 return 0;
58 }
59