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Posted to issues@subversion.apache.org by "Philip Martin (JIRA)" <ji...@apache.org> on 2018/03/08 11:36:00 UTC

[jira] [Created] (SVN-4722) checksum fail during commit when delta is 16K

Philip Martin created SVN-4722:
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             Summary: checksum fail during commit when delta is 16K
                 Key: SVN-4722
                 URL: https://issues.apache.org/jira/browse/SVN-4722
             Project: Subversion
          Issue Type: Bug
          Components: libsvn_fs_fs
    Affects Versions: 1.9.7
            Reporter: Philip Martin


As discussed

[https://mail-archives.apache.org/mod_mbox/subversion-dev/201803.mbox/%3C87lgf3fda2.fsf%40codematters.co.uk%3E]

[https://svn.haxx.se/dev/archive-2018-03/0070.shtml]

There is an error in the checksum code added to 1.9.7 to detect SHA1 collisions. The expanded length is caculated incorrectly and when the delta length is a multiple of 16K the checksum calculation stops early and fails.



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