Re: [Spatial] [spatial:tickets] #6 C++20 std::allocator::rebind is deprecated

[Sylvain B. <syl...@gm...>]

Hi Dario,

Thanks for the notification, I have not updated the library for a while
now, and I definitely should but do not have much time. Would you like to
do it?

Regards,
Sylvain

On Sat, Mar 6, 2021 at 11:07 PM Dario Mariani via Spatial-main <
spa...@li...> wrote:

> ------------------------------
>
> * [tickets:#6] <https://sourceforge.net/p/spatial/tickets/6/> C++20
> std::allocator::rebind is deprecated*
>
> *Status:* open
> *Milestone:* 2.1.9
> *Created:* Sat Mar 06, 2021 03:07 PM UTC by Dario Mariani
> *Last Updated:* Sat Mar 06, 2021 03:07 PM UTC
> *Owner:* nobody
>
> In std::allocator, the member rebind, construct and destroy were
> deprecated in C++20 and other allocators are doing the same (e.g. Intel
> OneTBB). A possible solution is:
>
> -      typedef typename Alloc::template rebind-      <Kdtree_link<Key, Value> >::other               Link_allocator;-      typedef typename Alloc::template rebind-      <value_type>::other                             Value_allocator;+      using Link_allocator  = std::allocator_traits<Alloc>::template rebind_alloc<Kdtree_link<Key, Value>>;+      using Value_allocator = std::allocator_traits<Alloc>::template rebind_alloc<value_type>;
>
> and
>
> -        get_value_allocator().construct(mutate_pointer(&safe.link->value),-                                        value);+        Value_allocator v_alloc = get_value_allocator();+        std::allocator_traits<Value_allocator>::construct(v_alloc, mutate_pointer(&safe.link->value), value);
>
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