| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <tuple> |
| |
| // template <class... Types> class tuple; |
| |
| // template <class Alloc> |
| // tuple(allocator_arg_t, const Alloc& a, const Types&...); |
| |
| // UNSUPPORTED: c++98, c++03 |
| |
| #include <tuple> |
| #include <memory> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| #include "allocators.h" |
| #include "../alloc_first.h" |
| #include "../alloc_last.h" |
| |
| struct ImplicitCopy { |
| explicit ImplicitCopy(int) {} |
| ImplicitCopy(ImplicitCopy const&) {} |
| }; |
| |
| // Test that tuple(std::allocator_arg, Alloc, Types const&...) allows implicit |
| // copy conversions in return value expressions. |
| std::tuple<ImplicitCopy> testImplicitCopy1() { |
| ImplicitCopy i(42); |
| return {std::allocator_arg, std::allocator<void>{}, i}; |
| } |
| |
| std::tuple<ImplicitCopy> testImplicitCopy2() { |
| const ImplicitCopy i(42); |
| return {std::allocator_arg, std::allocator<void>{}, i}; |
| } |
| |
| int main(int, char**) |
| { |
| { |
| // check that the literal '0' can implicitly initialize a stored pointer. |
| std::tuple<int*> t = {std::allocator_arg, std::allocator<void>{}, 0}; |
| } |
| { |
| std::tuple<int> t(std::allocator_arg, A1<int>(), 3); |
| assert(std::get<0>(t) == 3); |
| } |
| { |
| assert(!alloc_first::allocator_constructed); |
| std::tuple<alloc_first> t(std::allocator_arg, A1<int>(5), alloc_first(3)); |
| assert(alloc_first::allocator_constructed); |
| assert(std::get<0>(t) == alloc_first(3)); |
| } |
| { |
| assert(!alloc_last::allocator_constructed); |
| std::tuple<alloc_last> t(std::allocator_arg, A1<int>(5), alloc_last(3)); |
| assert(alloc_last::allocator_constructed); |
| assert(std::get<0>(t) == alloc_last(3)); |
| } |
| { |
| alloc_first::allocator_constructed = false; |
| std::tuple<int, alloc_first> t(std::allocator_arg, A1<int>(5), |
| 10, alloc_first(15)); |
| assert(std::get<0>(t) == 10); |
| assert(alloc_first::allocator_constructed); |
| assert(std::get<1>(t) == alloc_first(15)); |
| } |
| { |
| alloc_first::allocator_constructed = false; |
| alloc_last::allocator_constructed = false; |
| std::tuple<int, alloc_first, alloc_last> t(std::allocator_arg, |
| A1<int>(5), 1, alloc_first(2), |
| alloc_last(3)); |
| assert(std::get<0>(t) == 1); |
| assert(alloc_first::allocator_constructed); |
| assert(std::get<1>(t) == alloc_first(2)); |
| assert(alloc_last::allocator_constructed); |
| assert(std::get<2>(t) == alloc_last(3)); |
| } |
| { |
| alloc_first::allocator_constructed = false; |
| alloc_last::allocator_constructed = false; |
| std::tuple<int, alloc_first, alloc_last> t(std::allocator_arg, |
| A2<int>(5), 1, alloc_first(2), |
| alloc_last(3)); |
| assert(std::get<0>(t) == 1); |
| assert(!alloc_first::allocator_constructed); |
| assert(std::get<1>(t) == alloc_first(2)); |
| assert(!alloc_last::allocator_constructed); |
| assert(std::get<2>(t) == alloc_last(3)); |
| } |
| |
| return 0; |
| } |