Undefined behavior in dtoa.c (rshift 32 of 32bit data type)

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
c
Domain
backend

Research direction

Start by inspecting dtoa.c for the 32-bit right shift identified in the title and confirm the undefined behavior with the relevant test suite. Done means the shift is defined without changing the intended numeric conversion behavior.

Written by the indexing model from the issue text.

Description

interpreter-core type-bug
BPO 23999
Nosy @doko42, @mdickinson, @ericvsmith, @tiran, @serhiy-storchaka

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 2015-04-18.22:52:13.789>
labels = ['type-bug']
title = 'Undefined behavior in dtoa.c (rshift 32 of 32bit data type)'
updated_at = <Date 2015-04-19.13:03:53.726>
user = 'https://github.com/tiran'

bugs.python.org fields:

activity = <Date 2015-04-19.13:03:53.726>
actor = 'christian.heimes'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = []
creation = <Date 2015-04-18.22:52:13.789>
creator = 'christian.heimes'
dependencies = []
files = []
hgrepos = []
issue_num = 23999
keywords = []
message_count = 7.0
messages = ['241464', '241492', '241495', '241496', '241497', '241498', '241515']
nosy_count = 5.0
nosy_names = ['doko', 'mark.dickinson', 'eric.smith', 'christian.heimes', 'serhiy.storchaka']
pr_nums = []
priority = 'normal'
resolution = None
stage = 'needs patch'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue23999'
versions = ['Python 2.7', 'Python 3.3', 'Python 3.4', 'Python 3.5']

Dominant language
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Merged PRs (30d)
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