| 1 | /* |
|---|---|
| 2 | Copyright 2019 Glen Joseph Fernandes |
| 3 | (glenjofe@gmail.com) |
| 4 | |
| 5 | Distributed under the Boost Software License, Version 1.0. |
| 6 | (http://www.boost.org/LICENSE_1_0.txt) |
| 7 | */ |
| 8 | #include <boost/config.hpp> |
| 9 | #if (!defined(BOOST_LIBSTDCXX_VERSION) || \ |
| 10 | BOOST_LIBSTDCXX_VERSION >= 46000) && \ |
| 11 | !defined(BOOST_NO_CXX11_SMART_PTR) |
| 12 | #include <boost/smart_ptr/allocate_unique.hpp> |
| 13 | #include <boost/core/lightweight_test.hpp> |
| 14 | |
| 15 | template<class T = void> |
| 16 | struct creator { |
| 17 | typedef T value_type; |
| 18 | typedef T* pointer; |
| 19 | |
| 20 | template<class U> |
| 21 | struct rebind { |
| 22 | typedef creator<U> other; |
| 23 | }; |
| 24 | |
| 25 | creator() { } |
| 26 | |
| 27 | template<class U> |
| 28 | creator(const creator<U>&) { } |
| 29 | |
| 30 | T* allocate(std::size_t size) { |
| 31 | return static_cast<T*>(::operator new(sizeof(T) * size)); |
| 32 | } |
| 33 | |
| 34 | void deallocate(T* ptr, std::size_t) { |
| 35 | ::operator delete(ptr); |
| 36 | } |
| 37 | }; |
| 38 | |
| 39 | template<class T, class U> |
| 40 | inline bool |
| 41 | operator==(const creator<T>&, const creator<U>&) |
| 42 | { |
| 43 | return true; |
| 44 | } |
| 45 | |
| 46 | template<class T, class U> |
| 47 | inline bool |
| 48 | operator!=(const creator<T>&, const creator<U>&) |
| 49 | { |
| 50 | return false; |
| 51 | } |
| 52 | |
| 53 | class type { |
| 54 | public: |
| 55 | static unsigned instances; |
| 56 | |
| 57 | type() { |
| 58 | if (instances == 0) { |
| 59 | throw true; |
| 60 | } |
| 61 | ++instances; |
| 62 | } |
| 63 | |
| 64 | ~type() { |
| 65 | --instances; |
| 66 | } |
| 67 | |
| 68 | private: |
| 69 | type(const type&); |
| 70 | type& operator=(const type&); |
| 71 | }; |
| 72 | |
| 73 | unsigned type::instances = 0; |
| 74 | |
| 75 | int main() |
| 76 | { |
| 77 | try { |
| 78 | boost::allocate_unique<type>(alloc: creator<type>()); |
| 79 | BOOST_ERROR("allocate_unique did not throw"); |
| 80 | } catch (...) { |
| 81 | BOOST_TEST(type::instances == 0); |
| 82 | } |
| 83 | try { |
| 84 | boost::allocate_unique<const type>(alloc: creator<>()); |
| 85 | BOOST_ERROR("allocate_unique did not throw"); |
| 86 | } catch (...) { |
| 87 | BOOST_TEST(type::instances == 0); |
| 88 | } |
| 89 | return boost::report_errors(); |
| 90 | } |
| 91 | #else |
| 92 | int main() |
| 93 | { |
| 94 | return 0; |
| 95 | } |
| 96 | #endif |
| 97 |