std::pmr::polymorphic_allocator<T>::deallocate_bytes

void deallocate_bytes( void* p, std::size_t nbytes, std::size_t alignment = alignof(std::max_align_t) );		(C++20 起)

解分配 p 所指向的存储，它必须从比较等于 *resource() 的 std::pmr::memory_resource x 以 x.allocate(nbytes, alignment) 分配，通常通过调用 allocate_bytes(nbytes, alignment 。

等价于 resorce()->deallocate(p, nbytes, alignment); 。

不抛出。

引入此函数是为了用于全特化分配器 std::polymorphic_allocator<> ，但它可能在任何特化中都有用。

deallocate_object (C++20)	释放由 `allocate_object` 获得的未处理内存 (公开成员函数)
delete_object (C++20)	销毁并解分配对象 (公开成员函数)
deallocate [静态]	用分配器解分配存储 (`std::allocator_traits<Alloc>` 的公开静态成员函数)
deallocate	解分配内存 (`std::pmr::memory_resource` 的公开成员函数)

成员函数
polymorphic_allocator::polymorphic_allocator
polymorphic_allocator::allocate
polymorphic_allocator::deallocate
polymorphic_allocator::construct
polymorphic_allocator::destroy
polymorphic_allocator::allocate_bytes (C++20)
polymorphic_allocator::deallocate_bytes (C++20)
polymorphic_allocator::allocate_object (C++20)
polymorphic_allocator::deallocate_object (C++20)
polymorphic_allocator::new_object (C++20)
polymorphic_allocator::delete_object (C++20)
polymorphic_allocator::select_on_container_copy_construction
polymorphic_allocator::resource
非成员函数
operator==operator!=