#32053: Tor Browser bundles based on Firefox 68 ESR are not reproducible (LLVM optimization issue) -------------------------------------------------+------------------------- Reporter: gk | Owner: gk Type: defect | Status: | needs_review Priority: Immediate | Milestone: Component: Applications/Tor Browser | Version: Severity: Critical | Resolution: Keywords: tbb-9.0-must, tbb-9.0-issues, tbb- | Actual Points: 11.5 regression, tbb-9.0.1-can, | TorBrowserTeam201912R, GeorgKoppen201912 | Parent ID: | Points: Reviewer: | Sponsor: -------------------------------------------------+------------------------- Changes (by gk):
* keywords: tbb-9.0-must, tbb-9.0-issues, tbb-regression, tbb-9.0.1-can, TorBrowserTeam201912 => tbb-9.0-must, tbb-9.0-issues, tbb-regression, tbb-9.0.1-can, TorBrowserTeam201912R, GeorgKoppen201912 * status: assigned => needs_review * actualpoints: => 11.5 Comment: `bug_32053_v5` (https://gitweb.torproject.org/user/gk/tor-browser- build.git/commit/?h=bug_32053_v5&id=b3863530eb585d849a1de0e4eba6690e589954e6) is up for review. I've been running into two reproducibility issues while debugging. The one Alex reported (bug 43909) we need to fix, I am not sure about the other one, bug 42574. The later got fixed in clang 9 and I only encountered it while testing an LLVM 8 `opt` on a non-optimized style bitcode file built with Rust 1.32.0. When built with 1.34.2 which we actually uses I don't hit the bug. However, it's not clear whether any of the issues (or mabye even unknown ones) we hit on other platforms than macOS and 32bit Linux is caused by bug 42575, thus I think it's safer to backport that fix as well. Alex: a big thank you to you for your invaluable help. Without it hunting down and fixing the bug(s) would have taken much longer. boklm: please add your points for #32052 to this ticket, too. -- Ticket URL: <https://trac.torproject.org/projects/tor/ticket/32053#comment:53> Tor Bug Tracker & Wiki <https://trac.torproject.org/> The Tor Project: anonymity online
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