| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <set> |
| // UNSUPPORTED: c++98, c++03, c++11, c++14 |
| // UNSUPPORTED: libcpp-no-deduction-guides |
| // XFAIL: clang-6, apple-clang-9.0, apple-clang-9.1, apple-clang-10.0.0 |
| // clang-6 gives different error messages. |
| |
| // template<class InputIterator, |
| // class Compare = less<iter-value-type<InputIterator>>, |
| // class Allocator = allocator<iter-value-type<InputIterator>>> |
| // multiset(InputIterator, InputIterator, |
| // Compare = Compare(), Allocator = Allocator()) |
| // -> multiset<iter-value-type<InputIterator>, Compare, Allocator>; |
| // template<class Key, class Compare = less<Key>, |
| // class Allocator = allocator<Key>> |
| // multiset(initializer_list<Key>, Compare = Compare(), Allocator = Allocator()) |
| // -> multiset<Key, Compare, Allocator>; |
| // template<class InputIterator, class Allocator> |
| // multiset(InputIterator, InputIterator, Allocator) |
| // -> multiset<iter-value-type<InputIterator>, |
| // less<iter-value-type<InputIterator>>, Allocator>; |
| // template<class Key, class Allocator> |
| // multiset(initializer_list<Key>, Allocator) |
| // -> multiset<Key, less<Key>, Allocator>; |
| |
| #include <functional> |
| #include <set> |
| #include <type_traits> |
| |
| struct NotAnAllocator { |
| friend bool operator<(NotAnAllocator, NotAnAllocator) { return false; } |
| }; |
| |
| int main(int, char **) { |
| { |
| // cannot deduce Key from nothing |
| std::multiset s; |
| // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multiset'}} |
| } |
| { |
| // cannot deduce Key from just (Compare) |
| std::multiset s(std::less<int>{}); |
| // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multiset'}} |
| } |
| { |
| // cannot deduce Key from just (Compare, Allocator) |
| std::multiset s(std::less<int>{}, std::allocator<int>{}); |
| // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multiset'}} |
| } |
| { |
| // cannot deduce Key from multiset(Allocator) |
| std::multiset s(std::allocator<int>{}); |
| // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multiset'}} |
| } |
| { |
| // since we have parens, not braces, this deliberately does not find the |
| // initializer_list constructor |
| NotAnAllocator a; |
| std::multiset s(a); |
| // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multiset'}} |
| } |
| |
| return 0; |
| } |