| // { dg-options "-std=gnu++2a" } |
| // { dg-do run { target c++2a } } |
| |
| // Copyright (C) 2020-2023 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| // |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| // |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| #include <unordered_map> |
| #include <testsuite_hooks.h> |
| |
| struct aggressive_aggregate |
| { |
| int a; |
| int b; |
| }; |
| |
| void test_emplace() |
| { |
| std::unordered_map<int, aggressive_aggregate> x; |
| auto emplaced = x.emplace(std::piecewise_construct, |
| std::tuple(0), std::tuple(1, 2)); |
| VERIFY(emplaced.first->second.a == 1); |
| VERIFY(emplaced.first->second.b == 2); |
| emplaced = x.emplace(std::piecewise_construct, |
| std::tuple(1), std::tuple(1)); |
| VERIFY(emplaced.first->second.a == 1); |
| VERIFY(emplaced.first->second.b == 0); |
| emplaced = x.emplace(std::piecewise_construct, |
| std::tuple(2), std::tuple()); |
| VERIFY(emplaced.first->second.a == 0); |
| VERIFY(emplaced.first->second.b == 0); |
| } |
| |
| void test_emplace_hint() |
| { |
| std::unordered_map<int, aggressive_aggregate> x; |
| auto it = x.emplace_hint(x.begin(), |
| std::piecewise_construct, |
| std::tuple(3), std::tuple(1, 2)); |
| VERIFY(it->second.a == 1); |
| VERIFY(it->second.b == 2); |
| it = x.emplace_hint(x.begin(), |
| std::piecewise_construct, |
| std::tuple(4), std::tuple(1)); |
| VERIFY(it->second.a == 1); |
| VERIFY(it->second.b == 0); |
| it = x.emplace_hint(x.begin(), |
| std::piecewise_construct, |
| std::tuple(5), std::tuple()); |
| VERIFY(it->second.a == 0); |
| VERIFY(it->second.b == 0); |
| } |
| |
| void test_try_emplace_rvalue() |
| { |
| std::unordered_map<int, aggressive_aggregate> x; |
| auto emplaced = x.try_emplace(6, 1, 2); |
| VERIFY(emplaced.first->second.a == 1); |
| VERIFY(emplaced.first->second.b == 2); |
| emplaced = x.try_emplace(7, 1); |
| VERIFY(emplaced.first->second.a == 1); |
| VERIFY(emplaced.first->second.b == 0); |
| emplaced = x.try_emplace(8); |
| VERIFY(emplaced.first->second.a == 0); |
| VERIFY(emplaced.first->second.b == 0); |
| } |
| |
| void test_try_emplace_lvalue() |
| { |
| std::unordered_map<int, aggressive_aggregate> x; |
| int key = 9; |
| auto emplaced = x.try_emplace(key, 1, 2); |
| VERIFY(emplaced.first->second.a == 1); |
| VERIFY(emplaced.first->second.b == 2); |
| key = 10; |
| emplaced = x.try_emplace(key, 1); |
| VERIFY(emplaced.first->second.a == 1); |
| VERIFY(emplaced.first->second.b == 0); |
| key = 11; |
| emplaced = x.try_emplace(key); |
| VERIFY(emplaced.first->second.a == 0); |
| VERIFY(emplaced.first->second.b == 0); |
| } |
| |
| void test_try_emplace_hint_rvalue() |
| { |
| std::unordered_map<int, aggressive_aggregate> x; |
| auto it = x.try_emplace(x.begin(), 12, 1, 2); |
| VERIFY(it->second.a == 1); |
| VERIFY(it->second.b == 2); |
| it = x.try_emplace(x.begin(), 13, 1); |
| VERIFY(it->second.a == 1); |
| VERIFY(it->second.b == 0); |
| it = x.try_emplace(x.begin(), 14); |
| VERIFY(it->second.a == 0); |
| VERIFY(it->second.b == 0); |
| } |
| |
| void test_try_emplace_hint_lvalue() |
| { |
| std::unordered_map<int, aggressive_aggregate> x; |
| int key = 15; |
| auto it = x.try_emplace(x.begin(), key, 1, 2); |
| VERIFY(it->second.a == 1); |
| VERIFY(it->second.b == 2); |
| key = 16; |
| it = x.try_emplace(x.begin(), key, 1); |
| VERIFY(it->second.a == 1); |
| VERIFY(it->second.b == 0); |
| key = 17; |
| it = x.try_emplace(x.begin(), key); |
| VERIFY(it->second.a == 0); |
| VERIFY(it->second.b == 0); |
| } |
| |
| int main() |
| { |
| test_emplace(); |
| test_emplace_hint(); |
| test_try_emplace_rvalue(); |
| test_try_emplace_lvalue(); |
| test_try_emplace_hint_rvalue(); |
| test_try_emplace_hint_lvalue(); |
| } |