Quuxplusone updated this revision to Diff 189600. Quuxplusone added a comment. Herald added a subscriber: jdoerfert.
- Replace the unnecessary destructor in `class __new_delete_resource_imp`. - Add LWG2843 to the list of completed issues (thanks @zoecarver!) Repository: rCXX libc++ CHANGES SINCE LAST ACTION https://reviews.llvm.org/D47344/new/ https://reviews.llvm.org/D47344 Files: src/experimental/memory_resource.cpp www/cxx2a_status.html Index: www/cxx2a_status.html =================================================================== --- www/cxx2a_status.html +++ www/cxx2a_status.html @@ -219,7 +219,7 @@ <tr><td><a href="https://wg21.link/LWG2164";>2164</a></td><td>What are the semantics of <tt>vector.emplace(vector.begin(), vector.back())</tt>?</td><td>Jacksonville</td><td></td></tr> <tr><td><a href="https://wg21.link/LWG2243";>2243</a></td><td><tt>istream::putback</tt> problem</td><td>Jacksonville</td><td>Complete</td></tr> <tr><td><a href="https://wg21.link/LWG2816";>2816</a></td><td><tt>resize_file</tt> has impossible postcondition</td><td>Jacksonville</td><td><i>Nothing to do</i></td></tr> - <tr><td><a href="https://wg21.link/LWG2843";>2843</a></td><td>Unclear behavior of <tt>std::pmr::memory_resource::do_allocate()</tt></td><td>Jacksonville</td><td></td></tr> + <tr><td><a href="https://wg21.link/LWG2843";>2843</a></td><td>Unclear behavior of <tt>std::pmr::memory_resource::do_allocate()</tt></td><td>Jacksonville</td><td>Complete</td></tr> <tr><td><a href="https://wg21.link/LWG2849";>2849</a></td><td>Why does <tt>!is_regular_file(from)</tt> cause <tt>copy_file</tt> to report a "file already exists" error?</td><td>Jacksonville</td><td><i>Nothing to do</i></td></tr> <tr><td><a href="https://wg21.link/LWG2851";>2851</a></td><td><tt>std::filesystem</tt> enum classes are now underspecified</td><td>Jacksonville</td><td><i>Nothing to do</i></td></tr> <tr><td><a href="https://wg21.link/LWG2946";>2946</a></td><td>LWG 2758's resolution missed further corrections</td><td>Jacksonville</td><td>Complete</td></tr> Index: src/experimental/memory_resource.cpp =================================================================== --- src/experimental/memory_resource.cpp +++ src/experimental/memory_resource.cpp @@ -25,19 +25,20 @@ class _LIBCPP_TYPE_VIS __new_delete_memory_resource_imp : public memory_resource { -public: - ~__new_delete_memory_resource_imp() = default; - -protected: - virtual void* do_allocate(size_t __size, size_t __align) - { return _VSTD::__libcpp_allocate(__size, __align); /* FIXME */} + void *do_allocate(size_t size, size_t align) override { +#ifdef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION + if (__is_overaligned_for_new(align)) + __throw_bad_alloc(); +#endif + return _VSTD::__libcpp_allocate(size, align); + } - virtual void do_deallocate(void* __p, size_t __n, size_t __align) { - _VSTD::__libcpp_deallocate(__p, __n, __align); /* FIXME */ + void do_deallocate(void *p, size_t n, size_t align) override { + _VSTD::__libcpp_deallocate(p, n, align); } - virtual bool do_is_equal(memory_resource const & __other) const _NOEXCEPT - { return &__other == this; } + bool do_is_equal(memory_resource const & other) const _NOEXCEPT override + { return &other == this; } }; // null_memory_resource()
Index: www/cxx2a_status.html =================================================================== --- www/cxx2a_status.html +++ www/cxx2a_status.html @@ -219,7 +219,7 @@ <tr><td><a href="https://wg21.link/LWG2164";>2164</a></td><td>What are the semantics of <tt>vector.emplace(vector.begin(), vector.back())</tt>?</td><td>Jacksonville</td><td></td></tr> <tr><td><a href="https://wg21.link/LWG2243";>2243</a></td><td><tt>istream::putback</tt> problem</td><td>Jacksonville</td><td>Complete</td></tr> <tr><td><a href="https://wg21.link/LWG2816";>2816</a></td><td><tt>resize_file</tt> has impossible postcondition</td><td>Jacksonville</td><td><i>Nothing to do</i></td></tr> - <tr><td><a href="https://wg21.link/LWG2843";>2843</a></td><td>Unclear behavior of <tt>std::pmr::memory_resource::do_allocate()</tt></td><td>Jacksonville</td><td></td></tr> + <tr><td><a href="https://wg21.link/LWG2843";>2843</a></td><td>Unclear behavior of <tt>std::pmr::memory_resource::do_allocate()</tt></td><td>Jacksonville</td><td>Complete</td></tr> <tr><td><a href="https://wg21.link/LWG2849";>2849</a></td><td>Why does <tt>!is_regular_file(from)</tt> cause <tt>copy_file</tt> to report a "file already exists" error?</td><td>Jacksonville</td><td><i>Nothing to do</i></td></tr> <tr><td><a href="https://wg21.link/LWG2851";>2851</a></td><td><tt>std::filesystem</tt> enum classes are now underspecified</td><td>Jacksonville</td><td><i>Nothing to do</i></td></tr> <tr><td><a href="https://wg21.link/LWG2946";>2946</a></td><td>LWG 2758's resolution missed further corrections</td><td>Jacksonville</td><td>Complete</td></tr> Index: src/experimental/memory_resource.cpp =================================================================== --- src/experimental/memory_resource.cpp +++ src/experimental/memory_resource.cpp @@ -25,19 +25,20 @@ class _LIBCPP_TYPE_VIS __new_delete_memory_resource_imp : public memory_resource { -public: - ~__new_delete_memory_resource_imp() = default; - -protected: - virtual void* do_allocate(size_t __size, size_t __align) - { return _VSTD::__libcpp_allocate(__size, __align); /* FIXME */} + void *do_allocate(size_t size, size_t align) override { +#ifdef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION + if (__is_overaligned_for_new(align)) + __throw_bad_alloc(); +#endif + return _VSTD::__libcpp_allocate(size, align); + } - virtual void do_deallocate(void* __p, size_t __n, size_t __align) { - _VSTD::__libcpp_deallocate(__p, __n, __align); /* FIXME */ + void do_deallocate(void *p, size_t n, size_t align) override { + _VSTD::__libcpp_deallocate(p, n, align); } - virtual bool do_is_equal(memory_resource const & __other) const _NOEXCEPT - { return &__other == this; } + bool do_is_equal(memory_resource const & other) const _NOEXCEPT override + { return &other == this; } }; // null_memory_resource()
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