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On AIX, test_unpack_archive_xztar fails with default MAXDATA settings #79885
Description
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 = <Date 2019-02-18.11:24:29.670>
created_at = <Date 2019-01-10.09:12:51.298>
labels = ['3.8', 'type-feature', 'tests']
title = 'On AIX, test_unpack_archive_xztar fails with default MAXDATA settings'
updated_at = <Date 2019-09-10.13:57:40.904>
user = 'https://github.com/aixtools'bugs.python.org fields:
activity = <Date 2019-09-10.13:57:40.904>
actor = 'ned.deily'
assignee = 'none'
closed = True
closed_date = <Date 2019-02-18.11:24:29.670>
closer = 'ncoghlan'
components = ['Tests']
creation = <Date 2019-01-10.09:12:51.298>
creator = 'Michael.Felt'
dependencies = []
files = []
hgrepos = []
issue_num = 35704
keywords = ['patch']
message_count = 5.0
messages = ['333370', '335807', '335818', '337627', '337703']
nosy_count = 2.0
nosy_names = ['Michael.Felt', 'miss-islington']
pr_nums = ['11500', '11914', '14194']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue35704'
versions = ['Python 3.8']
Activity
aixtools commentedon Jan 10, 2019
By default AIX builds 32-bit applications - and the combined .data, .bss and .stack areas share one memory segment of 256 Mbyte.
This can be modified by either specifying a larger value for maxdata during linking (e.g., with LDFLAGS=-bmaxdata:0x40000000) or using the program ldedit (e.g., ldedit -b maxdata:0x40000000).
The subtest test_shutil.test_unpack_archive_xztar fails with the default. The patch here looks at the MAXDATA value of the executable XCOFF headers and skips the test when AIX is 32-bit and MAXDATA < 0x20000000.
This helps the result of AIX bots to be more accurate - as this so-called failure is not an issue with python itself.
miss-islington commentedon Feb 18, 2019
New changeset ef110b1 by Miss Islington (bot) (Michael Felt) in branch 'master':
bpo-35704: Prevent test_shutil fail result when AIX is 32-bit and MAXDATA < 0x20000000 (GH-11500)
ef110b1
miss-islington commentedon Feb 18, 2019
New changeset 02c04f2 by Miss Islington (bot) (Nick Coghlan) in branch 'master':
bpo-35704: Include correct NEWS entry (GH-11914)
02c04f2
aixtools commentedon Mar 10, 2019
Could this also be backported to 3.7 and 3.6 please?
aixtools commentedon Mar 11, 2019
On 10/03/2019 19:25, Michael Felt wrote: