New submission from Arfrever Frehtes Taifersar Arahesis:
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:
$ python3.4 -q
import sys
sys.setrecursionlimit(2**31)
Traceback (most recent call last):
File stdin, line 1, in module
OverflowError: signed integer is greater than maximum
sys.setrecursionlimit(2**31-1)
sys.getrecursionlimit()
2147483647
0
0
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:
$ python3.4 -q
import sys
sys.setrecursionlimit(2**30)
0
RuntimeError: maximum recursion depth exceeded during compilation
a
RuntimeError: maximum recursion depth exceeded during compilation
RuntimeError: maximum recursion depth exceeded during compilation
RuntimeError occurs for each line (even empty). Ctrl+D still works.
I use 64-bit GNU/Linux.
--
components: Interpreter Core
keywords: 3.3regression
messages: 198460
nosy: Arfrever
priority: normal
severity: normal
status: open
title: sys.setrecursionlimit(2**30) breaks interactive shell
versions: Python 3.3, Python 3.4
___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue19098
___
___
Python-bugs-list mailing list
Unsubscribe:
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
