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 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 {{no viable constructor or deduction guide for deduction of template arguments of '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 {{no viable constructor or deduction guide for deduction of template arguments of '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 {{no viable constructor or deduction guide for deduction of template arguments of '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 {{no viable constructor or deduction guide for deduction of template arguments of '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 {{no viable constructor or deduction guide for deduction of template arguments of '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