| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // UNSUPPORTED: no-threads |
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| 10 | |
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| 11 | // <future> |
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| 12 | |
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| 13 | // class packaged_task<R(ArgTypes...)> |
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| 14 | // template <class F, class Allocator> |
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| 15 | // packaged_task(allocator_arg_t, const Allocator& a, F&& f); |
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| 16 | // These constructors shall not participate in overload resolution if |
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| 17 | // decay<F>::type is the same type as std::packaged_task<R(ArgTypes...)>. |
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| 18 | |
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| 19 | #include <cassert> |
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| 20 | #include <future> |
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| 21 | #include <memory> |
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| 22 | #include <type_traits> |
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| 23 | |
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| 24 | #include "test_allocator.h" |
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| 25 | |
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| 26 | struct A {}; |
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| 27 | using PT = std::packaged_task<A(int, char)>; |
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| 28 | using VPT = volatile std::packaged_task<A(int, char)>; |
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| 29 | |
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| 30 | static_assert(!std::is_constructible<PT, std::allocator_arg_t, test_allocator<A>, VPT>::value, "" ); |
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| 31 | |
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| 32 | using PA = std::packaged_task<A(int)>; |
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| 33 | using PI = std::packaged_task<int(int)>; |
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| 34 | |
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| 35 | static_assert(!std::is_constructible<PA, std::allocator_arg_t, std::allocator<A>, const PA&>::value, "" ); |
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| 36 | static_assert(!std::is_constructible<PA, std::allocator_arg_t, std::allocator<A>, const PA&&>::value, "" ); |
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| 37 | static_assert(!std::is_constructible<PA, std::allocator_arg_t, std::allocator<A>, volatile PA&>::value, "" ); |
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| 38 | static_assert(!std::is_constructible<PA, std::allocator_arg_t, std::allocator<A>, volatile PA&&>::value, "" ); |
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| 39 | |
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| 40 | #if TEST_STD_VER >= 17 // packaged_task allocator support was removed in C++17 (LWG 2921) |
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| 41 | static_assert(!std::is_constructible_v<PA, std::allocator_arg_t, std::allocator<A>, const PI&>); |
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| 42 | static_assert(!std::is_constructible_v<PA, std::allocator_arg_t, std::allocator<A>, const PI&&>); |
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| 43 | static_assert(!std::is_constructible_v<PA, std::allocator_arg_t, std::allocator<A>, volatile PI&>); |
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| 44 | static_assert(!std::is_constructible_v<PA, std::allocator_arg_t, std::allocator<A>, volatile PI&&>); |
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| 45 | #else |
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| 46 | static_assert(std::is_constructible<PA, std::allocator_arg_t, std::allocator<A>, const PI&>::value, "" ); |
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| 47 | static_assert(std::is_constructible<PA, std::allocator_arg_t, std::allocator<A>, const PI&&>::value, "" ); |
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| 48 | static_assert(std::is_constructible<PA, std::allocator_arg_t, std::allocator<A>, volatile PI&>::value, "" ); |
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| 49 | static_assert(std::is_constructible<PA, std::allocator_arg_t, std::allocator<A>, volatile PI&&>::value, "" ); |
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| 50 | #endif |
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| 51 | |
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