This page is a snapshot from the LWG issues list, see the Library Active Issues List for more information and the meaning of Deferred status.

### 2202. Missing allocator support by `async`

Section: 32.9.9 [futures.async] Status: Deferred Submitter: Detlef Vollmann Opened: 2012-10-19 Last modified: 2016-01-28

Priority: 4

View other active issues in [futures.async].

View all other issues in [futures.async].

Discussion:

`promise`, `packaged_task`, and `async` are the only places where a shared state is actually supposed to be allocated. Accordingly, `promise` and `packaged_task` are "allocator-aware". But function template `async` provides no way to provide an allocator.

[2013-09 Chicago]

Matt: deprecate async

Nico: read my paper

Alisdair: defer issues to wait for polymorphic allocators

Alisdair: defer, active topic of research Deferred

[2014-02-20 Re-open Deferred issues as Priority 4]

[2015-05 Lenexa, SG1 response]

We want whatever status approximates: "will not fix; we're working on a replacement facility and don't want to add features to a broken one"

Proposed resolution: