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Re: [tor-bugs] #26475 [Applications/Tor Browser]: ESR60-based .dmg images are not built reproducibly with Stylo enabled using rustc > 1.25.0

#26475: ESR60-based .dmg images are not built reproducibly with Stylo enabled using
rustc > 1.25.0
-------------------------------------------------+-------------------------
 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_information
 Priority:  Very High                            |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-rbm, TorBrowserTeam201807,       |  Actual Points:
  GeorgKoppen201807                              |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by gk):

 Replying to [comment:22 alexcrichton]:
 > Hm interesting! I wonder if this is perhaps related to
 https://github.com/rust-lang/rust/issues/52044? That claims it was fixed
 with the most recent LLVM upgrade. Are you able to reproduce the non-
 determinism on the most recent nightly?

 Aha! That sounds promising and I certainly feel glandium's "This is
 driving me crazy", so this should be the issue then, right? ;)

 That said, I compiled the nightly from 2018-07-13 which should contain the
 LLVM upgrade and I can't reproduce the problem anymore. However, I can't
 either when compiling the one from from 2018-07-11 which should *not*
 contain the LLVM upgrade (it's based on commit
 e5f6498d3d5c9dac841009d7b49738923826af75). So, it seem the LLVM uprade
 (alone) is not enough to explain this bug, or am I missing something?

 Trying to figure out where all this started, I am pretty sure that
 2018-02-15 is good and 2018-03-07 is bad.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26475#comment:23>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

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