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sys.setrecursionlimit(2**30) breaks interactive shell #63297
Description
| BPO | 19098 |
|---|
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 2013-09-27.02:22:13.971>
created_at = <Date 2013-09-27.01:44:24.122>
labels = ['interpreter-core']
title = 'sys.setrecursionlimit(2**30) breaks interactive shell'
updated_at = <Date 2013-09-27.02:22:13.943>
user = 'https://bugs.python.org/Arfrever'bugs.python.org fields:
activity = <Date 2013-09-27.02:22:13.943>
actor = 'python-dev'
assignee = 'none'
closed = True
closed_date = <Date 2013-09-27.02:22:13.971>
closer = 'python-dev'
components = ['Interpreter Core']
creation = <Date 2013-09-27.01:44:24.122>
creator = 'Arfrever'
dependencies = []
files = []
hgrepos = []
issue_num = 19098
keywords = ['3.3regression']
message_count = 2.0
messages = ['198460', '198461']
nosy_count = 2.0
nosy_names = ['Arfrever', 'python-dev']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue19098'
versions = ['Python 3.3', 'Python 3.4']
Activity
Arfrever commentedon Sep 27, 2013
sys.setrecursionlimit(2**30) breaks interactive shell in Python >=3.3.
This bug does not occur during non-interactive execution of scripts / modules.
This bug does not occur in versions of Python older than 3.3.
This bug occurs only for some range of values of recursion limit. There are higher values, which do not cause this bug.
sys.setrecursionlimit(2**31), as expected, raises OverflowError.
Values like 2**31-1 (i.e. 2147483647) cause no problem:
Lower limit of values of recursion limit, which cause this bug: 715827883 == 2**29 + 2**27 + 2**25 + 2**23 + 2**21 + 2**19 + 2**17 + 2**15 + 2**13 + 2**11 + 2**9 + 2**7 + 2**5 + 2**3 + 2**1 + 1
Upper limit of values of recursion limit, which cause this bug: 1431655765 == 2**30 + 2**28 + 2**26 + 2**24 + 2**22 + 2**20 + 2**18 + 2**16 + 2**14 + 2**12 + 2**10 + 2**8 + 2**6 + 2**4 + 2**2 + 1
Example of this bug:
RuntimeError occurs for each line (even empty). Ctrl+D still works.
I use 64-bit GNU/Linux.
python-dev commentedon Sep 27, 2013
New changeset c3df31cbcd0a by Benjamin Peterson in branch '3.3':
don't scale compiler stack frames if the recursion limit is huge (closes bpo-19098)
http://hg.python.org/cpython/rev/c3df31cbcd0a
New changeset 9a7ec433bf59 by Benjamin Peterson in branch 'default':
merge 3.3 (bpo-19098)
http://hg.python.org/cpython/rev/9a7ec433bf59