Issue19098
Created on 2013-09-27 01:44 by Arfrever, last changed 2013-09-27 02:22 by python-dev. This issue is now closed.
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| msg198460 - (view) | Author: Arfrever Frehtes Taifersar Arahesis (Arfrever) * | Date: 2013-09-27 01:44 | |
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. |
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| msg198461 - (view) | Author: Roundup Robot (python-dev) | Date: 2013-09-27 02:22 | |
New changeset c3df31cbcd0a by Benjamin Peterson in branch '3.3': don't scale compiler stack frames if the recursion limit is huge (closes #19098) http://hg.python.org/cpython/rev/c3df31cbcd0a New changeset 9a7ec433bf59 by Benjamin Peterson in branch 'default': merge 3.3 (#19098) http://hg.python.org/cpython/rev/9a7ec433bf59 |
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| History | |||
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| Date | User | Action | Args |
| 2013-09-27 02:22:13 | python-dev | set | status: open -> closed nosy: + python-dev messages: + msg198461 resolution: fixed stage: resolved |
| 2013-09-27 01:44:24 | Arfrever | create | |