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chore: use relaxed load for unsync_load
#6179
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I don't care enough to reject this change, but as a matter of principle I am against making behavioral changes to satisfy model checkers in cases where the behavior is OK in practice. The algorithm here was lifted from prior art. If anything, MIRI could provide a way to annotate code sections it should ignore. |
FWIW this is not not a false positive in Miri. The code is UB according to our current documentation. I would expect Rust libraries to have a higher bar for correctness than "it's UB but we have not observed a miscompilation". Don't get me wrong, I'm not happy that this is UB. But fixing that requires someone to drive the necessary work on the language side; just ignoring the problem is not a solution. |
Bumps tokio from 1.34.0 to 1.35.0. Release notes Sourced from tokio's releases. Tokio v1.35.0 1.35.0 (December 8th, 2023) Added net: add Apple watchOS support (#6176) Changed io: drop the Sized requirements from AsyncReadExt.read_buf (#6169) runtime: make Runtime unwind safe (#6189) runtime: reduce the lock contention in task spawn (#6001) tokio: update nix dependency to 0.27.1 (#6190) Fixed chore: make --cfg docsrs work without net feature (#6166) chore: use relaxed load for unsync_load on miri (#6179) runtime: handle missing context on wake (#6148) taskdump: fix taskdump cargo config example (#6150) taskdump: skip notified tasks during taskdumps (#6194) tracing: avoid creating resource spans with current parent, use a None parent instead (#6107) tracing: make task span explicit root (#6158) Documented io: flush in AsyncWriteExt examples (#6149) runtime: document fairness guarantees and current behavior (#6145) task: document cancel safety of LocalSet::run_until (#6147) #6001: tokio-rs/tokio#6001 #6107: tokio-rs/tokio#6107 #6144: tokio-rs/tokio#6144 #6145: tokio-rs/tokio#6145 #6147: tokio-rs/tokio#6147 #6148: tokio-rs/tokio#6148 #6149: tokio-rs/tokio#6149 #6150: tokio-rs/tokio#6150 #6158: tokio-rs/tokio#6158 #6166: tokio-rs/tokio#6166 #6169: tokio-rs/tokio#6169 #6176: tokio-rs/tokio#6176 #6179: tokio-rs/tokio#6179 #6189: tokio-rs/tokio#6189 #6190: tokio-rs/tokio#6190 #6194: tokio-rs/tokio#6194 Commits 92a3455 chore: prepare Tokio v1.35.0 (#6197) 1968565 chore: use relaxed load for unsync_load (#6203) c9273f1 sync: improve safety comments for WakeList (#6200) e05d0f8 changelog: fix missing link for 1.8.2 (#6199) debcb22 Revert "net: add SocketAddr::as_abstract_namespace (#6144)" (#6198) 83b7397 io: drop the Sized requirements from AsyncReadExt.read_buf (#6169) 3991f9f docs: fix typo in 'tokio/src/sync/broadcast.rs' (#6182) 48c0e62 chore: use relaxed load for unsync_load on miri (#6179) d561b58 taskdump: skip notified tasks during taskdumps (#6194) 3a4aef1 runtime: reduce the lock contention in task spawn (#6001) Additional commits viewable in compare view Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase. Dependabot commands and options You can trigger Dependabot actions by commenting on this PR: @dependabot rebase will rebase this PR @dependabot recreate will recreate this PR, overwriting any edits that have been made to it @dependabot merge will merge this PR after your CI passes on it @dependabot squash and merge will squash and merge this PR after your CI passes on it @dependabot cancel merge will cancel a previously requested merge and block automerging @dependabot reopen will reopen this PR if it is closed @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself) @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself) @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)
We need this fix: tokio-rs/tokio#6179
Closes: #6155