Message 148524 - Python tracker

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In-reply-to
Author	tim.peters
Recipients	Voo, mark.dickinson, rhettinger, tim.peters
Date	2011年11月28日.23:45:41
SpamBayes Score	3.6831338e-05
Marked as misclassified	No
Message-id	<1322523942.31.0.838759156554.issue13496@psf.upfronthosting.co.za>

Content
FWIW, I doubt there's a real issue here. Objects in Python consume a lot more than a byte or two of memory, so the index range of a Python list is generally a lot less than ssize_t allows for. In other words, quantify "large" in "large arrays". How large can a Python list actually be, relative to ssize_t? Similar reasoning accounts for why we never worry about overflow when mucking with refcounts: the size of a refcount member exceeds the maximum number of references that could exist.

Content

FWIW, I doubt there's a real issue here. Objects in Python consume a lot more than a byte or two of memory, so the index range of a Python list is generally a lot less than ssize_t allows for. In other words, quantify "large" in "large arrays". How large can a Python list actually be, relative to ssize_t? Similar reasoning accounts for why we never worry about overflow when mucking with refcounts: the size of a refcount member exceeds the maximum number of references that could exist.

History
Date	User	Action	Args
2011年11月28日 23:45:42	tim.peters	set	recipients: + tim.peters, rhettinger, mark.dickinson, Voo
2011年11月28日 23:45:42	tim.peters	set	messageid: <1322523942.31.0.838759156554.issue13496@psf.upfronthosting.co.za>
2011年11月28日 23:45:41	tim.peters	link	issue13496 messages
2011年11月28日 23:45:41	tim.peters	create

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