[tbb-bugs] #32053 [Applications/Tor Browser]: Tor Browser bundles based on Firefox 68 ESR are not reproducible (LLVM optimization issue)
Tor Bug Tracker & Wiki
blackhole at torproject.org
Wed Nov 6 17:17:11 UTC 2019
#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 alexcrichton):
The bug seems to be in the `-jump-threading` pass which I suspect is
included in the O1 optimizations, yeah, but this technically only arose
during O3 when presumably enough inlining had happened to then trigger the
bug. I'm not really sure what the best way to avoid this bug would be
unfortunately, but I suspect that an `-O1` build should be reproducible
(albeit slow).
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/32053#comment:29>
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