#6 C++20 std::allocator::rebind is deprecated

[Dario Mariani]

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);

[Dario Mariani]

Ok, I have a quick hack but I'll see if I can clean and complete it. It
will take some time as it's not a critical issue for me right now.
Regards.

On Wed, Mar 10, 2021 at 8:34 AM Sylvain Bougerel sylvain.bougerel@gmail.com
wrote:

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 spatial-main@lists.sourceforge.net wrote:

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• [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>;</value_type></alloc></kdtree_link<key,></alloc></value_type></kdtree_link<key,>

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);</value_allocator>

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