[tor-bugs] #20210 [Applications/Tor Browser]: Update from 6.5a2 to 6.5a3 on OSX breaks Tor Browser

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#20210: Update from 6.5a2 to 6.5a3 on OSX breaks Tor Browser
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 Reporter:  mrphs                     |          Owner:  tbb-team
     Type:  defect                    |         Status:  new
 Priority:  Very High                 |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Major                     |     Resolution:
 Keywords:  TorBrowserTeam201610      |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by boklm):

 I have looked at why 7z doesn't set the correct permissions. It seems that
 it is because it doesn't read the RockRidge extensions on the iso image,
 containing the permissions (and the symlink infos). It looks like some
 support for this has been added to 7zip 16.04, but the latest p7zip
 version (the port of 7zip to Unix which we are using) is still based on
 7zip 16.02. I patched p7zip with the changes from 7zip adding support for
 the RockRidge extensions, but it still does not set the permissions
 correctly. I started debugging this but did not find yet what is
 happening.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20210#comment:27>
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