| 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 | // <functional> |
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| 10 | |
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| 11 | // UNSUPPORTED: c++03, c++11, c++14 |
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| 12 | |
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| 13 | // class function<R(ArgTypes...)> |
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| 14 | |
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| 15 | // template<class A> function(allocator_arg_t, const A&, function&&); |
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| 16 | // |
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| 17 | // This signature was removed in C++17 |
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| 18 | |
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| 19 | #include <functional> |
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| 20 | #include <memory> |
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| 21 | #include <utility> |
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| 22 | |
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| 23 | class A |
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| 24 | { |
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| 25 | int data_[10]; |
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| 26 | public: |
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| 27 | static int count; |
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| 28 | |
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| 29 | A() |
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| 30 | { |
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| 31 | ++count; |
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| 32 | for (int i = 0; i < 10; ++i) |
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| 33 | data_[i] = i; |
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| 34 | } |
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| 35 | |
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| 36 | A(const A&) {++count;} |
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| 37 | |
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| 38 | ~A() {--count;} |
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| 39 | |
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| 40 | int operator()(int i) const |
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| 41 | { |
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| 42 | for (int j = 0; j < 10; ++j) |
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| 43 | i += data_[j]; |
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| 44 | return i; |
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| 45 | } |
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| 46 | }; |
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| 47 | |
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| 48 | int A::count = 0; |
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| 49 | |
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| 50 | int g(int) { return 0; } |
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| 51 | |
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| 52 | void f() { |
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| 53 | std::function<int(int)> f = A(); |
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| 54 | std::function<int(int)> f2(std::allocator_arg, std::allocator<A>(), std::move(f)); // expected-error {{no matching constructor for initialization of}} |
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| 55 | } |
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| 56 | |
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