Message3288

Author	pjenvey
Recipients	pjenvey
Date	2008-06-15.03:36:56
SpamBayes Score	0.10072823
Marked as misclassified	No
Message-id	<1213501016.69.0.729614055386.issue1058@psf.upfronthosting.co.za>
In-reply-to

Content
object.__set/delattr__ allow modification of built in types, this is known as the Carlo Verre hack: Jython 2.3a0+ (trunk:4630:4631M, Jun 14 2008, 20:07:38) [Java HotSpot(TM) Client VM (Apple Inc.)] on java1.5.0_13 Type "help", "copyright", "credits" or "license" for more information. >>> object.__setattr__(str, 'lower', str.upper) >>> 'dammit Carlo!'.lower() 'DAMMIT CARLO!' See CPython's typeobject.c:hackfix for how they prevent this This prevents test_descr.carloverre from passing

object.__set/delattr__ allow modification of built in types, this is 
known as the Carlo Verre hack:

Jython 2.3a0+ (trunk:4630:4631M, Jun 14 2008, 20:07:38) 
[Java HotSpot(TM) Client VM (Apple Inc.)] on java1.5.0_13
Type "help", "copyright", "credits" or "license" for more information.
>>> object.__setattr__(str, 'lower', str.upper)
>>> 'dammit Carlo!'.lower()
'DAMMIT CARLO!'

See CPython's typeobject.c:hackfix for how they prevent this

This prevents test_descr.carloverre from passing

History
Date	User	Action	Args
2008-06-15 03:36:56	pjenvey	set	spambayes_score: 0.100728 -> 0.10072823 recipients: + pjenvey
2008-06-15 03:36:56	pjenvey	set	spambayes_score: 0.100728 -> 0.100728 messageid: <1213501016.69.0.729614055386.issue1058@psf.upfronthosting.co.za>
2008-06-15 03:36:56	pjenvey	link	issue1058 messages
2008-06-15 03:36:56	pjenvey	create