| 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 | // <memory> |
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| 10 | |
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| 11 | // allocator: |
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| 12 | // template <class... Args> void construct(pointer p, Args&&... args); |
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| 13 | |
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| 14 | // Removed in C++20. |
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| 15 | |
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| 16 | // UNSUPPORTED: c++03, c++11, c++14, c++17 |
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| 17 | |
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| 18 | #include <memory> |
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| 19 | #include <cassert> |
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| 20 | |
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| 21 | int A_constructed = 0; |
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| 22 | |
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| 23 | struct A { |
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| 24 | int data; |
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| 25 | A() { ++A_constructed; } |
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| 26 | |
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| 27 | A(const A&) { ++A_constructed; } |
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| 28 | |
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| 29 | explicit A(int) { ++A_constructed; } |
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| 30 | A(int, int*) { ++A_constructed; } |
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| 31 | |
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| 32 | ~A() { --A_constructed; } |
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| 33 | }; |
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| 34 | |
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| 35 | int move_only_constructed = 0; |
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| 36 | |
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| 37 | class move_only { |
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| 38 | move_only(const move_only&) = delete; |
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| 39 | move_only& operator=(const move_only&) = delete; |
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| 40 | |
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| 41 | public: |
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| 42 | move_only(move_only&&) { ++move_only_constructed; } |
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| 43 | move_only& operator=(move_only&&) { return *this; } |
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| 44 | |
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| 45 | move_only() { ++move_only_constructed; } |
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| 46 | ~move_only() { --move_only_constructed; } |
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| 47 | |
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| 48 | public: |
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| 49 | int data; // unused other than to make sizeof(move_only) == sizeof(int). |
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| 50 | // but public to suppress "-Wunused-private-field" |
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| 51 | }; |
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| 52 | |
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| 53 | int main(int, char**) { |
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| 54 | { |
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| 55 | std::allocator<A> a; |
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| 56 | A* ap = a.allocate(n: 3); |
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| 57 | a.construct(p: ap); // expected-error {{no member}} |
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| 58 | a.destroy(p: ap); // expected-error {{no member}} |
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| 59 | a.construct(p: ap, args: A()); // expected-error {{no member}} |
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| 60 | a.destroy(p: ap); // expected-error {{no member}} |
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| 61 | a.construct(p: ap, args: 5); // expected-error {{no member}} |
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| 62 | a.destroy(p: ap); // expected-error {{no member}} |
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| 63 | a.construct(p: ap, args: 5, args: (int*)0); // expected-error {{no member}} |
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| 64 | a.destroy(p: ap); // expected-error {{no member}} |
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| 65 | a.deallocate(p: ap, n: 3); |
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| 66 | } |
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| 67 | { |
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| 68 | std::allocator<move_only> a; |
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| 69 | move_only* ap = a.allocate(n: 3); |
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| 70 | a.construct(p: ap); // expected-error {{no member}} |
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| 71 | a.destroy(p: ap); // expected-error {{no member}} |
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| 72 | a.construct(p: ap, args: move_only()); // expected-error {{no member}} |
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| 73 | a.destroy(p: ap); // expected-error {{no member}} |
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| 74 | a.deallocate(p: ap, n: 3); |
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| 75 | } |
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| 76 | return 0; |
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| 77 | } |
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| 78 | |
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