Mercurial > hg
view mercurial/node.py @ 24879:b3142ea2a0d4 stable
parsers: avoid signed integer overflow in calculation of leaf-node index
If v = -INT_MAX - 1, -v would exceed INT_MAX. I don't think this would cause
problems such as issue4627, but we can't blame it as a compiler bug because
signed integer overflow is undefined in C.
author | Yuya Nishihara <yuya@tcha.org> |
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date | Wed, 29 Apr 2015 23:07:34 +0900 |
parents | 25e572394f5c |
children | 1a5211f2f87f |
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# node.py - basic nodeid manipulation for mercurial # # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. import binascii nullrev = -1 nullid = "\0" * 20 # This ugly style has a noticeable effect in manifest parsing hex = binascii.hexlify bin = binascii.unhexlify def short(node): return hex(node[:6])