Python3.3 segfaults when using big5hkscs encoding

[alexisd]

BPO	20512
Nosy	@loewis, @vstinner, @ned-deily, @bitdancer, @1st1
Superseder	bpo-18458: interactive interpreter crashes and test_readline fails on OS X 10.9 Mavericks due to libedit update

^{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 2014-02-04.21:51:03.596>
created_at = <Date 2014-02-04.18:48:23.519>
labels = ['type-crash']
title = 'Python3.3 segfaults when using big5hkscs encoding'
updated_at = <Date 2014-02-04.21:51:03.553>
user = 'https://bugs.python.org/alexisd'

bugs.python.org fields:

activity = <Date 2014-02-04.21:51:03.553>
actor = 'ned.deily'
assignee = 'none'
closed = True
closed_date = <Date 2014-02-04.21:51:03.596>
closer = 'ned.deily'
components = []
creation = <Date 2014-02-04.18:48:23.519>
creator = 'alexis.d'
dependencies = []
files = []
hgrepos = []
issue_num = 20512
keywords = []
message_count = 6.0
messages = ['210258', '210260', '210261', '210262', '210263', '210271']
nosy_count = 6.0
nosy_names = ['loewis', 'vstinner', 'ned.deily', 'r.david.murray', 'alexis.d', 'yselivanov']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = 'resolved'
status = 'closed'
superseder = '18458'
type = 'crash'
url = 'https://bugs.python.org/issue20512'
versions = ['Python 3.3']

[alexisd]

When using the 'big5hkscs' encoding it's possible to make Python3.3 segfault, here is how to repro:

 ✗ 13:41 adaboville @ adoboville-mbp in ~ $ py3
Python 3.3.2 (v3.3.2:d047928ae3f6, May 13 2013, 13:52:24)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> 'nb'.encode('big5hkscs')
b'nb'
>>> 'nb'.encode('big5hkscs')
Segmentation fault: 11

Note that it doesn't crash on the first first line, but on the second (even though both lines are the same). FWIW pypy3.3 doesn't crash:

 ✓ 13:43 adaboville @ adoboville-mbp in .../pypy3-2.1-beta1-osx64 $ bin/pypy
Python 3.2.3 (d63636b30cc0, Jul 30 2013, 07:02:48)
[PyPy 2.1.0-beta1 with GCC 4.2.1 Compatible Clang Compiler] on darwin
Type "help", "copyright", "credits" or "license" for more information.
And now for something completely different: ``why did you guys have to make the
builtin fortune more interesting than actual work? i just catched myself
restarting pypy 20 times''
>>>> 'nb'.encode('big5hkscs')
b'nb'
>>>> 'nb'.encode('big5hkscs')
b'nb'
>>>>

[1st1]

Can't reproduce this on 3.3.3

Python 3.3.3 (default, Dec 2 2013, 01:40:21)
[GCC 4.2.1 Compatible Apple LLVM 5.0 (clang-500.2.79)] on darwin

[bitdancer]

Alexis: are you on 10.9, by any chance?

[alexisd]

@david: yes, 10.9.

[bitdancer]

Most likely, then, this is a duplicate of bpo-18458.

[ned-deily]

This is definitely a duplicate of bpo-18458 since the build signature indicates you are using 3.3.2 from the python.org OS X binary installer. The problem is fixed in the current Python 3.3.3 installer.