mmap module: add MAP_ALIGNED_SUPER FreeBSD and MAP_CONCEAL OpenBSD constants

[devnexen]

BPO	37471
Nosy	@vstinner, @koobs, @devnexen
PRs	bpo-37471: mmap module adding FreeBSD specific flag into the constants #14513

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2019-07-01.14:22:37.149>
labels = ['extension-modules', 'type-feature', '3.9']
title = 'mmap module: add MAP_ALIGNED_SUPER FreeBSD and MAP_CONCEAL OpenBSD constants'
updated_at = <Date 2019-07-08.13:58:54.452>
user = 'https://github.com/devnexen'

bugs.python.org fields:

activity = <Date 2019-07-08.13:58:54.452>
actor = 'devnexen'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Extension Modules', 'FreeBSD']
creation = <Date 2019-07-01.14:22:37.149>
creator = 'devnexen'
dependencies = []
files = []
hgrepos = []
issue_num = 37471
keywords = []
message_count = 3.0
messages = ['347023', '347026', '347027']
nosy_count = 3.0
nosy_names = ['vstinner', 'koobs', 'devnexen']
pr_nums = ['14513']
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue37471'
versions = ['Python 3.9']

Linked PRs

• gh-81652 add MAP_ALIGNED_SUPER FreeBSD and MAP_CONCEAL OpenBSD constants #102191

[koobs]

Thanks David!

Can this be backported to earlier 3.x's and 2.7?

[vstinner]

Can this be backported to earlier 3.x's and 2.7?

No, a new constant is a new feature. If we add it to Python 3.7.4, it would mean that an application written with 3.7.4 will fail on 3.7.3 which would be surprising and bad.

[koobs]

Thanks for clarifying Victor

[corona10]

@vstinner @erlend-aasland
As I shared, I will go ahead with this issue as the internal OSS sprint.
I will delegate the issue to my mentee as the good first issue.