upstream/mercurial-mirror Files · mercurial/cacheutil.py

dirs: fix out-of-bounds access in Py3...

dirs: fix out-of-bounds access in Py3 The hack for mutating Python's variable-length integers that was ported to py3 in (dirs: port PyInt code to work on Python 3, 2016-10-08) was reading from ob_digit[1] instead of ob_digit[0] for some reason. Space for ob_digit[1] would only be allocated for integers larger than 30 bits, so we ended up writing to unallocated memory. Also, we would write an integer that's 2^30 times too large, so we would never free these integers. Found by AddressSanitizer. Differential Revision: https://phab.mercurial-scm.org/D7597

Augie Fackler - - Load All Authors

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      # scmutil.py - Mercurial core utility functions

      #

      #  Copyright Matt Mackall <mpm@selenic.com> and other

      #

      # This software may be used and distributed according to the terms of the

      # GNU General Public License version 2 or any later version.

      from __future__ import absolute_import

      from . import repoview

      def cachetocopy(srcrepo):

          """return the list of cache file valuable to copy during a clone"""

          # In local clones we're copying all nodes, not just served

          # ones. Therefore copy all branch caches over.

          cachefiles = [b'branch2']

          cachefiles += [b'branch2-%s' % f for f in repoview.filtertable]

          cachefiles += [b'rbc-names-v1', b'rbc-revs-v1']

          cachefiles += [b'tags2']

          cachefiles += [b'tags2-%s' % f for f in repoview.filtertable]

          cachefiles += [b'hgtagsfnodes1']

          return cachefiles

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				# scmutil.py - Mercurial core utility functions
				#
				# Copyright Matt Mackall <mpm@selenic.com> and other
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.
				from __future__ import absolute_import

				from . import repoview


				def cachetocopy(srcrepo):
				"""return the list of cache file valuable to copy during a clone"""
				# In local clones we're copying all nodes, not just served
				# ones. Therefore copy all branch caches over.
				cachefiles = [b'branch2']
				cachefiles += [b'branch2-%s' % f for f in repoview.filtertable]
				cachefiles += [b'rbc-names-v1', b'rbc-revs-v1']
				cachefiles += [b'tags2']
				cachefiles += [b'tags2-%s' % f for f in repoview.filtertable]
				cachefiles += [b'hgtagsfnodes1']
				return cachefiles