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Re: [tor-bugs] #32053 [Applications/Tor Browser]: Tor Browser bundles based on Firefox 68 ESR are not reproducible (LLVM optimization issue)
#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:37 alexcrichton]:
> Oh for `llvm-extract` I used the `-rfunc` argument which is a regex
instead of an exact name, like so: `llvm-extract before.bc
-rfunc=17h5949677e2a2fd343E -o before-extract.bc`
Thanks, that helped. However, I've tried to repro just doing the `-jump-
threading` pass thousands of times on the same machine (kernel, glibc
etc.), with the same clang version, essentially with the same script, as I
reproduce the bug when running *all* the passes up to and including the
problematic `-jump-threading` one: but I don't hit the bug that way, which
seems to reproduce my results from comment:30. I wonder what we are
missing here.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/32053#comment:38>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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