| // Copyright (C) 2013-2021 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/>. |
| |
| // { dg-do compile { target c++11 } } |
| |
| #include <unordered_set> |
| #include <testsuite_allocator.h> |
| |
| struct T { int i; }; |
| |
| struct hash |
| { |
| std::size_t operator()(const T t) const noexcept |
| { return t.i; } |
| }; |
| |
| struct equal_to |
| { |
| bool operator()(const T& lhs, const T& rhs) const noexcept |
| { return lhs.i == rhs.i; } |
| }; |
| |
| // Versions of the function objects without nothrow swap. |
| struct hash_t : hash { }; |
| void swap(hash_t&, hash_t&) noexcept(false) { } |
| struct equal_to_t : equal_to { }; |
| void swap(equal_to_t&, equal_to_t&) noexcept(false) { } |
| |
| using __gnu_test::propagating_allocator; |
| |
| void test01() |
| { |
| typedef std::allocator<T> alloc_type; |
| typedef std::unordered_set<T, hash, equal_to, alloc_type> test_type; |
| test_type v1; |
| test_type v2; |
| // this is a GNU extension for std::allocator |
| static_assert( noexcept( v1 = std::move(v2) ), "Move assign cannot throw" ); |
| static_assert( noexcept( v1.swap(v2) ), "Swap cannot throw" ); |
| } |
| |
| void test02() |
| { |
| typedef std::allocator<T> alloc_type; |
| typedef std::unordered_set<T, hash_t, equal_to, alloc_type> test_type; |
| test_type v1; |
| test_type v2; |
| static_assert( noexcept( v1 = std::move(v2) ), "Move assign cannot throw" ); |
| static_assert( !noexcept( v1.swap(v2) ), "Swap can throw" ); |
| } |
| |
| void test03() |
| { |
| typedef std::allocator<T> alloc_type; |
| typedef std::unordered_set<T, hash, equal_to_t, alloc_type> test_type; |
| test_type v1; |
| test_type v2; |
| static_assert( noexcept( v1 = std::move(v2) ), "Move assign cannot throw" ); |
| static_assert( !noexcept( v1.swap(v2) ), "Swap can throw" ); |
| } |
| |
| void test04() |
| { |
| typedef propagating_allocator<T, false> alloc_type; |
| typedef std::unordered_set<T, hash, equal_to, alloc_type> test_type; |
| test_type v1(alloc_type(1)); |
| test_type v2(alloc_type(2)); |
| static_assert( !noexcept( v1 = std::move(v2) ), "Move assign can throw" ); |
| static_assert( noexcept( v1.swap(v2) ), "Swap cannot throw" ); |
| } |
| |
| void test05() |
| { |
| typedef propagating_allocator<T, true> alloc_type; |
| typedef std::unordered_set<T, hash, equal_to, alloc_type> test_type; |
| test_type v1(alloc_type(1)); |
| test_type v2(alloc_type(2)); |
| static_assert( noexcept( v1 = std::move(v2) ), "Move assign cannot throw" ); |
| static_assert( noexcept( v1.swap(v2) ), "Swap cannot throw" ); |
| } |
| |
| void test06() |
| { |
| typedef std::unordered_set<int> test_type; |
| static_assert( noexcept( test_type() ), "Default constructor does not throw" ); |
| static_assert( noexcept( test_type(test_type()) ), "Move constructor does not throw" ); |
| } |