[Python-Dev] Disabling string interning for null and single-char causes segfaults (original) (raw)
Amaury Forgeot d'Arc amauryfa at gmail.com
Mon Mar 4 20:20:00 CET 2013
- Previous message: [Python-Dev] Disabling string interning for null and single-char causes segfaults
- Next message: [Python-Dev] Disabling string interning for null and single-char causes segfaults
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
2013/3/4 Guido van Rossum <guido at python.org>
>>>> x = u'\xe9'.encode('ascii', 'ignore') >>>> x == '', x is '' > (True, False)
Code that relies on this is incorrect (the language doesn't guarantee interning) but nevertheless given the intention of the implementation, that behavior of encode() is also a bug.
The example above is obviously from python2.7; there is a similar example with python3.2:
x = b'\xe9\xe9'.decode('ascii', 'ignore') x == '', x is '' (True, False)
...but this bug has been fixed in 3.3: PyUnicode_Resize() always returns the unicode_empty singleton.
-- Amaury Forgeot d'Arc -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.python.org/pipermail/python-dev/attachments/20130304/9bf5a2d8/attachment.html>
- Previous message: [Python-Dev] Disabling string interning for null and single-char causes segfaults
- Next message: [Python-Dev] Disabling string interning for null and single-char causes segfaults
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]