Issue 3437: __cpp_lib_polymorphic_allocator is in the wrong header

Title: __cpp_lib_polymorphic_allocator is in the wrong header
Status: c++23
Section: [version.syn]
Submitter: Jonathan Wakely

Created on 2020-04-29.00:00:00 last changed 13 months ago

Messages

Date: 2020-11-09.21:40:50

Proposed resolution:

This wording is relative to N4861.

Modify [version.syn] as indicated:

[…]
#define __cpp_lib_parallel_algorithm    201603L // also in <algorithm>, <numeric>
#define __cpp_lib_polymorphic_allocator 201902L // also in <memorymemory_resource>
#define __cpp_lib_quoted_string_io      201304L // also in <iomanip>
[…]

msg11277 (view)

Date: 2020-11-09.00:00:00

[ 2020-11-09 Approved In November virtual meeting. Status changed: Tentatively Ready → WP. ]

msg11243 (view)

Date: 2020-05-15.00:00:00

[ 2020-05-09; Reflector prioritization ]

Set status to Tentatively Ready after six votes in favour during reflector discussions.

msg11242 (view)

Date: 2020-04-29.00:00:00

[version.syn] says that __cpp_lib_polymorphic_allocator is also defined in <memory>, but std::polymorphic_allocator is defined in <memory_resource>. This seems like an error in P1902R1. The macro should be in the same header as the feature it relates to.

History
Date	User	Action	Args
2023-11-22 15:47:43	admin	set	status: wp -> c++23
2020-11-09 21:40:50	admin	set	messages: + msg11575
2020-11-09 21:40:50	admin	set	status: ready -> wp
2020-05-09 19:32:16	admin	set	messages: + msg11277
2020-05-09 19:32:16	admin	set	status: new -> ready
2020-04-29 16:51:09	admin	set	messages: + msg11243
2020-04-29 00:00:00	admin	create