| 1 | //===----------------------------------------------------------------------===// |
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | // UNSUPPORTED: c++03 |
| 10 | |
| 11 | // <functional> |
| 12 | |
| 13 | // class function<R(ArgTypes...)> |
| 14 | |
| 15 | // template<class F, class A> void assign(F&&, const A&); |
| 16 | // This call was removed post-C++14 |
| 17 | |
| 18 | #include <functional> |
| 19 | #include <cassert> |
| 20 | |
| 21 | #include "test_macros.h" |
| 22 | #include "test_allocator.h" |
| 23 | |
| 24 | class A |
| 25 | { |
| 26 | int data_[10]; |
| 27 | public: |
| 28 | static int count; |
| 29 | |
| 30 | A() |
| 31 | { |
| 32 | ++count; |
| 33 | for (int i = 0; i < 10; ++i) |
| 34 | data_[i] = i; |
| 35 | } |
| 36 | |
| 37 | A(const A&) {++count;} |
| 38 | |
| 39 | ~A() {--count;} |
| 40 | |
| 41 | int operator()(int i) const |
| 42 | { |
| 43 | for (int j = 0; j < 10; ++j) |
| 44 | i += data_[j]; |
| 45 | return i; |
| 46 | } |
| 47 | |
| 48 | int foo(int) const {return 1;} |
| 49 | }; |
| 50 | |
| 51 | int A::count = 0; |
| 52 | |
| 53 | int main(int, char**) |
| 54 | { |
| 55 | #if TEST_STD_VER <= 14 |
| 56 | { |
| 57 | std::function<int(int)> f; |
| 58 | f.assign(A(), test_allocator<A>()); |
| 59 | assert(A::count == 1); |
| 60 | assert(f.target<A>()); |
| 61 | assert(f.target<int(*)(int)>() == 0); |
| 62 | } |
| 63 | assert(A::count == 0); |
| 64 | #endif |
| 65 | |
| 66 | return 0; |
| 67 | } |
| 68 | |