Rollup of 11 pull requests #74468
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Rollup of 11 pull requests #74468
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This commit refactors the initial implementation to fit into std and makes some other changes: - use MaybeUninit internally in SyncOnceCell - correctly impl Drop for lazy::Once - port Lazy::take from once_cell from: matklad/once_cell#100 Co-Authored-By: Paul Dicker <pitdicker@users.noreply.github.com>
A follow-up to rust-lang#74406, this commit merely removes the `shell: bash` lines where they are explicitly added in favor of setting defaults for *all* "run" steps. Signed-off-by: Kristofer Rye <kristofer.rye@gmail.com>
This will render the src/ci/exec-with-shell.py script more or less useless, but we're going to replace that by just using the system bash instead. Signed-off-by: Kristofer Rye <kristofer.rye@gmail.com>
Also, promote defaults.run.shell from inside only the primary jobs to the top level. The src/ci/exec-with-shell.py wrapper script was formerly used to change out the shell mid-job by intercepting a CI_OVERRIDE_SHELL environment variable. Now, instead, we just set `bash` as the global default across all jobs, and we also delete the exec-with-shell.py script. Signed-off-by: Kristofer Rye <kristofer.rye@gmail.com>
Closes rust-lang#69414 (no longer ICEs after rust-lang#74159)
This commit stops linting against `Box` in `extern "C" fn`s for the `improper_ctypes_definitions` lint - boxes are documented to be FFI-safe. Signed-off-by: David Wood <david@davidtw.co>
Always install when the build succeeds Fixes rust-lang#74431 Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
…crum Add lazy initialization primitives to std Follow-up to rust-lang#68198 Current RFC: rust-lang/rfcs#2788 Rebased and fixed up a few of the dangling comments. Some notes carried over from the previous PR: - [ ] Naming. I'm ok to just roll with the `Sync` prefix like `SyncLazy` for now, but [have a personal preference for `Atomic`](rust-lang/rfcs#2788 (comment)) like `AtomicLazy`. - [x] [Poisoning](rust-lang/rfcs#2788 (comment)). It seems like there's [some regret around poisoning in other `std::sync` types that we might want to just avoid upfront for `std::lazy`, especially if that would align with a future `std::mutex` that doesn't poison](https://rust-lang.zulipchat.com/#narrow/stream/219381-t-libs/topic/parking_lot.3A.3AMutex.20in.20std/near/190331199). Personally, if we're adding these types to `std::lazy` instead of `std::sync`, I'd be on-board with not worrying about poisoning in `std::lazy`, and potentially deprecating `std::sync::Once` and `lazy_static` in favour of `std::lazy` down the track if it's possible, rather than attempting to replicate their behavior. cc @Amanieu @sfackler. - [ ] [Consider making`SyncOnceCell::get` blocking](matklad/once_cell#92). There doesn't seem to be consensus in the linked PR on whether or not that's strictly better than the non-blocking variant. In general, none of these seem to be really blocking an initial unstable merge, so we could possibly kick off a FCP if y'all are happy? cc @matklad @pitdicker have I missed anything, or were there any other considerations that have come up since we last looked at this?
…sakis Compare tagged/niche-filling layout and pick the best one Finishes up rust-lang#71045, and so fixes rust-lang#63866. cc @eddyb r? @nikomatsakis (since @eddyb wrote the first commit)
…roalbini ci: Set `shell: bash` as a default, remove duplicates A follow-up to rust-lang#74406, this commit merely removes the `shell: bash` lines where they were added in favor of setting defaults for *all* "run" steps in the jobs that run the tests. The changes in rust-lang#74406 were needed because of an upstream change to the `windows-2019` GitHub Actions image. Previously, the configuration worked fine without specifying `shell: bash`, but for some reason this broke with a new change that was deployed today. The preceding PR was a hotfix to get CI passing, but there was a slightly less duplicative way to specify the default shell for the jobs, which was to set the `defaults.run` option. This change applies to the `pr`, `try`, `auto`, and `auto-fallible` jobs, which are derived from the YAML-anchor `base-ci-job`. I did not apply these changes to the `master`, `try-success`, `try-failure`, `auto-success`, or `auto-failure` jobs because they have only a few steps. cc/r? @Mark-Simulacrum
bootstrap.py: patch RPATH on NixOS to handle the new zlib dependency. This is a stop-gap until rust-lang#74420 is resolved (assuming we'll patch beta to statically link zlib). However, I've been meaning to rewrite the NixOS support we have in `bootstrap.py` for a while now, and had to in order to cleanly add zlib as a dependency (the second commit is a relatively small delta in functionality, compared to the first). Previously, we would extract the `ld-linux.so` path from the output of `ldd /run/current-system/sw/bin/sh`, which assumes a lot. On top of that we didn't use any symlinks, which meant if the user ran GC (`nix-collect-garbage`), e.g. after updating their system, their `stage0` binaries would suddenly be broken (i.e. referring to files that no longer exist). We were also using `patchelf` directly, assuming it can be found in `$PATH` (which is not necessarily true). My new approach relies on using `nix-build` to get the following "derivations" (packages, more or less): * `stdenv.cc.bintools`, which has a `nix-support/dynamic-linker` file containing the path to `ld-linux.so` * reading this file is [the canonical way to run `patchelf --set-interpreter`](https://github.com/NixOS/nixpkgs/search?l=Nix&q=%22--set-interpreter+%24%28cat+%24NIX_CC%2Fnix-support%2Fdynamic-linker%29%22) * `patchelf` (so that the user doesn't need to have it installed) * `zlib`, for the `libz.so` dependency of `libLLVM-*.so` (until rust-lang#74420 is resolved, presumably) This is closer to how software is built on Nix, but I've tried to keep it as simple as possible (and not add e.g. a `stage0.nix` file). Symlinks to each of those dependencies are kept in `stage0/.nix-deps`, which prevents GC from invalidating `stage0` binaries. r? @nagisa cc @Mark-Simulacrum @oli-obk @davidtwco
Add regression test for rust-lang#69414 Closes rust-lang#69414 (no longer ICEs after rust-lang#74159)
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@bors retry |
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⌛ Testing commit cae9c50 with merge 658e2656d59953c2b380fcb1226c8c31d87158e9... |
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💔 Test failed - checks-actions |
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This doesn't look spurious. |
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Wait, that's quickcheck, so it's possible it's a buggy test. cc @BurntSushi @bors retry |
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@eddyb yeah that's a known bug in the crate, I filed it earlier. FEFF causes problems |
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(BurntSushi/xsv#227 for the record) |
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☀️ Test successful - checks-actions, checks-azure |
This was referenced Jul 18, 2020
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FTR something in this PR has regressed performance: https://perf.rust-lang.org/compare.html?start=d3df8512d2c2afc6d2e7d8b5b951dd7f2ad77b02&end=7d31ffc1ac9e9ea356e896e63307168a64501b9d&stat=instructions:u |
Just to clarify: @Mark-Simulacrum and I are confident that #74069 was the only perf regression in this rollup. |
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This PR turned out to be performance-neutral. See results of investigation here #74716 (comment); the revert of #74069 (Compare tagged/niche-filling layout and pick the best one) is being undone in #74802. |
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Successful merges:
shell: bashas a default, remove duplicates #74418 (ci: Setshell: bashas a default, remove duplicates)Box#74448 (improper_ctypes_definitions: allowBox)Safetydocs forfrom_raw_parts_mut#74450 (FixSafetydocs forfrom_raw_parts_mut)strandBTreeSet#74453 (Use intra-doc links instrandBTreeSet)Failed merges:
r? @ghost