The type of ob_exports in PyByteArrayObject become Py_ssize_t.

[shihai1991]

BPO	38465
Nosy	@serhiy-storchaka, @shihai1991
PRs	bpo-38465: Convert the type of ob_exports in PyByteArrayObject to Py_ssize_t #16746

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

Show more details

GitHub fields:

assignee = None
closed_at = <Date 2019-10-21.06:32:44.797>
created_at = <Date 2019-10-13.14:57:15.852>
labels = ['interpreter-core', 'type-feature', '3.9']
title = 'The type of ob_exports in PyByteArrayObject become Py_ssize_t.'
updated_at = <Date 2019-10-21.06:32:44.795>
user = 'https://github.com/shihai1991'

bugs.python.org fields:

activity = <Date 2019-10-21.06:32:44.795>
actor = 'serhiy.storchaka'
assignee = 'none'
closed = True
closed_date = <Date 2019-10-21.06:32:44.797>
closer = 'serhiy.storchaka'
components = ['Interpreter Core']
creation = <Date 2019-10-13.14:57:15.852>
creator = 'shihai1991'
dependencies = []
files = []
hgrepos = []
issue_num = 38465
keywords = ['patch']
message_count = 6.0
messages = ['354586', '354587', '354866', '354913', '355023', '355024']
nosy_count = 2.0
nosy_names = ['serhiy.storchaka', 'shihai1991']
pr_nums = ['16746']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue38465'
versions = ['Python 3.9']

[shihai1991]

for a code example:

v = []
b = bytearray(0xffff)
for i in range(2**31+1)
    # the ob_exports would be overflow in 32 bit machine when i = 2**31.
    v.append(memoryview(b))

IMHO, i thought converting the type of ob_exports to Py_ssize_t is fine.

PS: I have no actual user scenario.

[shihai1991]

sorry, typo error.
# the ob_exports would be overflow in 32 bit machine when i = 2**31.
-->
# the ob_exports would be overflow in 64 bit machine when i = 2**31.

[serhiy-storchaka]

See also array and mmap.

[shihai1991]

Thanks, Serhiy, you are right.

[serhiy-storchaka]

New changeset 06cd5b6 by Serhiy Storchaka (Hai Shi) in branch 'master':
bpo-38465: Convert the type of exports counters to Py_ssize_t. (GH-16746)
06cd5b6

[serhiy-storchaka]

Thank you for your contribution hai shi!