Regression in overallocation for literal list initialization in v3.9+

chadnetzer

BPO	43574
Nosy	@rhettinger, @gpshead, @methane, @serhiy-storchaka, @chadnetzer, @corona10, @brandtbucher, @Zeturic
PRs	bpo-43574: Dont overallocate list literals #24954

^{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 2021-03-21.02:31:54.743>
labels = ['interpreter-core', '3.11', '3.10', 'performance']
title = 'Regression in overallocation for literal list initialization in v3.9+'
updated_at = <Date 2022-03-08.07:27:36.247>
user = 'https://github.com/chadnetzer'

bugs.python.org fields:

activity = <Date 2022-03-08.07:27:36.247>
actor = 'methane'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Interpreter Core']
creation = <Date 2021-03-21.02:31:54.743>
creator = 'Chad.Netzer'
dependencies = []
files = []
hgrepos = []
issue_num = 43574
keywords = ['patch']
message_count = 3.0
messages = ['389207', '390174', '414728']
nosy_count = 8.0
nosy_names = ['rhettinger', 'gregory.p.smith', 'methane', 'serhiy.storchaka', 'Chad.Netzer', 'corona10', 'brandtbucher', 'Zeturic']
pr_nums = ['24954']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'resource usage'
url = 'https://bugs.python.org/issue43574'
versions = ['Python 3.10', 'Python 3.11']