[tbb-bugs] #32053 [Applications/Tor Browser]: Tor Browser bundles based on Firefox 68 ESR are not reproducible (LLVM optimization issue)

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#32053: Tor Browser bundles based on Firefox 68 ESR are not reproducible (LLVM
optimization issue)
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 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:  new
 Priority:  Immediate                            |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Critical                             |     Resolution:
 Keywords:  TorBrowserTeam201911, tbb-9.0-must,  |  Actual Points:
  tbb-9.0-issues, tbb-regression,                |
  tbb-9.0.1-can, GeorgKoppen201911               |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by gk):

 Replying to [comment:33 boklm]:
 > Replying to [comment:32 gk]:
 > > Let's test -O1 in our upcoming alpha build to get a feeling whether
 that would be an acceptable workaround or not and to check whether it
 actually resolves our build issues: `bug_32053_workaround`
 (https://gitweb.torproject.org/user/gk/tor-
 browser.git/commit/?h=bug_32053_workaround&id=f1f9fa0286982d1fa486880ad6037e1e7a46457d)
 has a patch for review.
 >
 > That sounds like a good idea to test this in the next alpha. And the
 patch looks good to me.

 That strategy does not fly, alas, as using -O1 is causing build bustage on
 Linux at least (due to the current defense we have against proxy bypasses
 of Rust code), see: #32426.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/32053#comment:35>
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