Message 379255 - Python tracker

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Author	serhiy.storchaka
Recipients	ned.deily, ronaldoussoren, serhiy.storchaka, wessen
Date	2020-10-21.21:36:41
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1603316201.98.0.436946514314.issue42103@roundup.psfhosted.org>
In-reply-to

Content
There are two issues here. The simple one is building a large format string for struct.unpack(). It has simple solution: use f'>{n}{_BINARY_FORMAT[size]}'. The hard issue is that read(n) allocates n bytes in memory even if there are not so many bytes in the file. It affects not only plistlib and should be fixed in the file implementation itself. There is an open issue for this.

There are two issues here.

The simple one is building a large format string for struct.unpack(). It has simple solution: use f'>{n}{_BINARY_FORMAT[size]}'.

The hard issue is that read(n) allocates n bytes in memory even if there are not so many bytes in the file. It affects not only plistlib and should be fixed in the file implementation itself. There is an open issue for this.

History
Date	User	Action	Args
2020-10-21 21:36:42	serhiy.storchaka	set	recipients: + serhiy.storchaka, ronaldoussoren, ned.deily, wessen
2020-10-21 21:36:41	serhiy.storchaka	set	messageid: <1603316201.98.0.436946514314.issue42103@roundup.psfhosted.org>
2020-10-21 21:36:41	serhiy.storchaka	link	issue42103 messages
2020-10-21 21:36:41	serhiy.storchaka	create