Message 103766 - Python tracker

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In-reply-to
Author	pitrou
Recipients	doerwalter, lemburg, loewis, pitrou, vstinner
Date	2010年04月20日.21:09:53
SpamBayes Score	0.037375487
Marked as misclassified	No
Message-id	<1271797794.58.0.927187826817.issue8092@psf.upfronthosting.co.za>

Content
> I don't know if "nallocated += repsize - 4;" can overflow or not. > If yes, how can I detect the overflow? Sure, if they are both Py_ssize_t, just use: if (nallocated > PY_SSIZE_T_MAX - repsize + 4) { /* handle overflow ... */ }

Content

> I don't know if "nallocated += repsize - 4;" can overflow or not.
> If yes, how can I detect the overflow?
Sure, if they are both Py_ssize_t, just use:
if (nallocated > PY_SSIZE_T_MAX - repsize + 4) {
 /* handle overflow ... */
}

History
Date	User	Action	Args
2010年04月20日 21:09:54	pitrou	set	recipients: + pitrou, lemburg, loewis, doerwalter, vstinner
2010年04月20日 21:09:54	pitrou	set	messageid: <1271797794.58.0.927187826817.issue8092@psf.upfronthosting.co.za>
2010年04月20日 21:09:53	pitrou	link	issue8092 messages
2010年04月20日 21:09:53	pitrou	create

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