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 <deque> 16 #include <iterator> 17 #include <cassert> 18 #include <cstddef> 19 20 21 int main() 22 { 23 // Test the explicit deduction guides 24 { 25 // queue(Compare, Container, const Alloc); 26 // The '45' is not an allocator 27 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'}} 28 } 29 30 { 31 // queue(const queue&, const Alloc&); 32 // The '45' is not an allocator 33 std::priority_queue<int> source; 34 std::priority_queue pri(source, 45); // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'priority_queue'}} 35 } 36 37 { 38 // priority_queue(Iter, Iter, Comp) 39 // int is not an iterator 40 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'}} 41 } 42 43 { 44 // priority_queue(Iter, Iter, Comp, Container) 45 // float is not an iterator 46 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'}} 47 } 48 49 // Test the implicit deduction guides 50 { 51 // priority_queue (allocator &) 52 std::priority_queue pri((std::allocator<int>())); // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'priority_queue'}} 53 // Note: The extra parens are necessary, since otherwise clang decides it is a function declaration. 54 // Also, we can't use {} instead of parens, because that constructs a 55 // stack<allocator<int>, allocator<allocator<int>>> 56 } 57 58 } 59
