Update mdbook
This updates mdbook from 0.4.21 to 0.4.25. The list of changes is [here](https://github.com/rust-lang/mdBook/blob/master/CHANGELOG.md#mdbook-0425). The only user-visible changes are some changes around the theme picker, and change to the copy-to-clipboard ignoring hidden lines.
Internally there were some dependency updates and small fixes.
This also updates `clap` from 4.0.15 to 4.0.32 whose changelog is [here](https://github.com/clap-rs/clap/blob/master/CHANGELOG.md#4032---2022-12-22). This impacts tools like cargo. I don't see anything particularly noteworthy there, though there are some small user-visible changes.
Unfortunately this required adding a hack for building `rustix` with a bootstrap tool. The comment explains why. I am unable to think of some other workaround (or even a cleaner way to set the rustflag). Ideas are welcome if you can think of alternatives. I'm struggling to even think of a long-term solution, other than asking projects not to do auto-nightly feature detection.
One medium-term solution is to avoid the clap dependency for the mdbook library (which is how rustix gets pulled in). That is one of my goals for the 0.5 release of mdbook, but that probably won't happen until later this year. It would also require dropping clap from `rustbook` and using some other means to parse arguments (there's only two options, so it can probably be done manually).
Add log-backtrace option to show backtraces along with logging
according to #90698, I added a compiler option, `-Zlog-backtrace=filter`, where `filter` is a module name, to show backtraces for logging without rebuilding.
resolve#90698
Update `rand` in the stdlib tests, and remove the `getrandom` feature from it.
The main goal is actually removing `getrandom`, so that eventually we can allow running the stdlib test suite on tier3 targets which don't have `getrandom` support. Currently those targets can only run the subset of stdlib tests that exist in uitests, and (generally speaking), we prefer not to test libstd functionality in uitests, which came up recently in https://github.com/rust-lang/rust/pull/104095 and https://github.com/rust-lang/rust/pull/104185. Additionally, the fact that we can't update `rand`/`getrandom` means we're stuck with the old set of tier3 targets, so can't test new ones.
~~Anyway, I haven't checked that this actually does allow use on tier3 targets (I think it does not, as some work is needed in stdlib submodules) but it moves us slightly closer to this, and seems to allow at least finally updating our `rand` dep, which definitely improves the status quo.~~ Checked and works now.
For the most part, our tests and benchmarks are fine using hard-coded seeds. A couple tests seem to fail with this (stuff manipulating the environment expecting no collisions, for example), or become pointless (all inputs to a function become equivalent). In these cases I've done a (gross) dance (ab)using `RandomState` and `Location::caller()` for some extra "entropy".
Trying to share that code seems *way* more painful than it's worth given that the duplication is a 7-line function, even if the lines are quite gross. (Keeping in mind that sharing it would require adding `rand` as a non-dev dep to std, and exposing a type from it publicly, all of which sounds truly awful, even if done behind a perma-unstable feature).
See also some previous attempts:
- https://github.com/rust-lang/rust/pull/86963 (in particular https://github.com/rust-lang/rust/pull/86963#issuecomment-885438936 which explains why this is non-trivial)
- https://github.com/rust-lang/rust/pull/89131
- https://github.com/rust-lang/rust/pull/96626#issuecomment-1114562857 (I tried in that PR at the same time, but settled for just removing the usage of `thread_rng()` from the benchmarks, since that was the main goal).
- https://github.com/rust-lang/rust/pull/104185
- Probably more. It's very tempting of a thing to "just update".
r? `@Mark-Simulacrum`
Migrate `codegen_ssa` to diagnostics structs - [Part 3]
Completes migrating `codegen_ssa` module except 2 outstanding errors that depend on other crates:
1. [`rustc_middle::mir::interpret::InterpError`](b6097f2e1b/compiler/rustc_middle/src/mir/interpret/error.rs (L475)): I saw `rustc_middle` is unassigned, I am open to take this work.
2. `codegen_llvm`'s use of `fn span_invalid_monomorphization_error`, which I started to replace in the [last commit](9a31b3cdda) of this PR, but would like to know the team's preference on how we should keep replacing the other macros:
2.1. Update macros to expect a `Diagnostic`
2.2. Remove macros and expand the code on each use.
See [some examples of the different options in this experimental commit](64aee83e80)
_Part 2 - https://github.com/rust-lang/rust/pull/103792_
r? ``@davidtwco``
Cc ``@compiler-errors``
Handle non-existent upstream master branches in `x fmt`
People who do have a remote for `rust-lang/rust` but don't have the master branch checked out there used to get this error when running `x fmt`:
> fatal: ambiguous argument 'rust/master': unknown revision or path not in the working tree.
> Use '--' to separate paths from revisions, like this:
> 'git <command> [<revision>...] -- [<file>...]'
> rust/master
Which is not exactly helpful.
Now, we fall back to `origin/master` (hoping that at least that remote exists) for that case. If there is still some error, we just fall back to `x fmt .` and print a warning.
r? `@jyn514`
8 commits in 2381cbdb4e9b07090f552d34a44a529b6e620e44..8c460b2237a6359a7e3335890db8da049bdd62fc
2022-12-23 12:19:27 +0000 to 2023-01-04 14:30:01 +0000
- test: revive nightly plugin tests to work (rust-lang/cargo#11534)
- Add note to release notes about rejecting multiple registries. (rust-lang/cargo#11531)
- Fix a typo `fresheness` -> `freshness` (rust-lang/cargo#11529)
- Reasons for rebuilding (rust-lang/cargo#11407)
- Asymmetric tokens (rust-lang/cargo#10771)
- Use proper git URL for GitHub repos (rust-lang/cargo#11517)
- Add `registry.default` example (rust-lang/cargo#11516)
- Support vendoring with different revs from same git repo (rust-lang/cargo#10690)
Also update license exceptions and permitted dependencies
for new cargo dependency "pasetors".
A new dependency `getrandom` is added into `rustc-workspace-hacks`,
since it requires feature `js`.
Jsondoclint: Add `--verbose` and `--json-output` options
There quite helpful for manually using jsondoclint as a debugging tool, especially on large files (these were written to look into core.json).
r? rustdoc
This allows analyzing the output programatically; for example, finding
the item with the highest `total_estimate`.
I also took the liberty of adding `untracked` tests to `rustc_session` and documentation to the unstable book for `dump-mono-items`.
Remove old version of `cfg-if` by bumping `packed_simd_2` and `getrandom v0.2` versions
```console
> cargo update --package packed_simd_2 --package getrandom@0.2.0
Updating crates.io index
Removing cfg-if v0.1.10
Updating getrandom v0.2.0 -> v0.2.8
Updating packed_simd_2 v0.3.4 -> v0.3.8
```
`packed_simd_2` is only used as a dependency of `bytecount` which in turn is only used by `rustfmt`. I can't see any issue with the minor version bump.
The bigger jump is `getrandom@0.2.0` which is used by a number of things, but 0.2.8 is still semver compatible and there doesn't seem to be any worrying changes (see the [changelog](https://github.com/rust-random/getrandom/blob/master/CHANGELOG.md)). The only breaking change are the removal of XP, stdweb and CloudAbi support but these are not host targets and rustc lacks support for them in any case (stdweb development was [abandonded](https://rustsec.org/advisories/RUSTSEC-2020-0056.html), XP is [tier 3 and `no_std`](https://doc.rust-lang.org/beta/rustc/platform-support.html#tier-3) and CloubAbi is [no longer supported](https://github.com/rust-lang/rust/pull/78439)).
Note that this doesn't affect `getrandom@0.1.16` which is what std depends on and which is already using the latest version of `cfg-if` (besides, there are already plans to remove that entirely).
Rollup of 6 pull requests
Successful merges:
- #105978 (Mark `proc_macro_decls_static` as always used)
- #106051 (Allow building std with cranelift)
- #106056 (Make `sess.bug` much less noisy)
- #106057 (Give a more helpful error for "trimmed_def_paths constructed")
- #106058 (Fix the issue number in comment for as_local_call_operand)
- #106059 (Avoid running the `Profile` step twice on `x setup`)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Remove old versions of `cfg-if` by bumping `packed_simd_2` and `getrandom v0.2` versions
```console
> cargo update --package packed_simd_2 --package getrandom@0.2.0
Updating crates.io index
Removing cfg-if v0.1.10
Updating getrandom v0.2.0 -> v0.2.8
Updating packed_simd_2 v0.3.4 -> v0.3.8
```
`packed_simd_2` is only used as a dependency `bytecount`. The bigger jump is `getrandom@0.2.0`, but it's still semver compatible and there doesn't seem to be any worrying changes (see the [changelog](https://github.com/rust-random/getrandom/blob/master/CHANGELOG.md)). Note that this doesn't affect `getrandom@0.1.16`, which is already using the latest version of `cfg-if` (besides, there are already plans to remove that entirely).
Migrate rustc_mir_build diagnostics
Rebases https://github.com/rust-lang/rust/pull/100854
~~The remaining issue is how to better resolve 72bea68af4~~
~~The diagnostic macros seems to generate a broken diagnostic, and I couldn't figure out how to manually format the fluent message, so I hardcoded the format string for now. I'd like pointers to a better fix for this.~~
Also, I'm not 100% sure I didn't mess up a rebase somewhere 🙂
r? `@davidtwco`
Rollup of 10 pull requests
Successful merges:
- #98391 (Reimplement std's thread parker on top of events on SGX)
- #104019 (Compute generator sizes with `-Zprint_type_sizes`)
- #104512 (Set `download-ci-llvm = "if-available"` by default when `channel = dev`)
- #104901 (Implement masking in FileType comparison on Unix)
- #105082 (Fix Async Generator ABI)
- #105109 (Add LLVM KCFI support to the Rust compiler)
- #105505 (Don't warn about unused parens when they are used by yeet expr)
- #105514 (Introduce `Span::is_visible`)
- #105516 (Update cargo)
- #105522 (Remove wrong note for short circuiting operators)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Add LLVM KCFI support to the Rust compiler
This PR adds LLVM Kernel Control Flow Integrity (KCFI) support to the Rust compiler. It initially provides forward-edge control flow protection for operating systems kernels for Rust-compiled code only by aggregating function pointers in groups identified by their return and parameter types. (See llvm/llvm-project@cff5bef.)
Forward-edge control flow protection for C or C++ and Rust -compiled code "mixed binaries" (i.e., for when C or C++ and Rust -compiled code share the same virtual address space) will be provided in later work as part of this project by identifying C char and integer type uses at the time types are encoded (see Type metadata in the design document in the tracking issue #89653).
LLVM KCFI can be enabled with -Zsanitizer=kcfi.
Thank you again, `@bjorn3,` `@eddyb,` `@nagisa,` and `@ojeda,` for all the help!
Shrink `rustc_parse_format::Piece`
This makes both variants closer together in size (previously they were different by 208 bytes -- 16 vs 224). This may make things worse, but it's worth a try.
r? `@nnethercote`
This commit adds LLVM Kernel Control Flow Integrity (KCFI) support to
the Rust compiler. It initially provides forward-edge control flow
protection for operating systems kernels for Rust-compiled code only by
aggregating function pointers in groups identified by their return and
parameter types. (See llvm/llvm-project@cff5bef.)
Forward-edge control flow protection for C or C++ and Rust -compiled
code "mixed binaries" (i.e., for when C or C++ and Rust -compiled code
share the same virtual address space) will be provided in later work as
part of this project by identifying C char and integer type uses at the
time types are encoded (see Type metadata in the design document in the
tracking issue #89653).
LLVM KCFI can be enabled with -Zsanitizer=kcfi.
Co-authored-by: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Detect long types in E0308 and write them to disk
On type error with long types, print an abridged type and write the full type to disk.
Print the widest possible short type while still fitting in the terminal.
Add prototype to generate `COPYRIGHT` from REUSE metadata
This PR adds a prototype to generate the `COPYRIGHT` file from the metadata gathered with REUSE. There are two new tools:
* `src/tools/collect-license-metadata` invokes REUSE, parses its output and stores a concise JSON representation of the metadata in `src/etc/license-metadata.json`.
* `src/tools/generate-copyright` parses the metadata generated above, (in the future will) gather crate dependencies metadata, and renders the `COPYRIGHT.md` file.
Note that since the contents of those files are currently incorrect, rather than outputting in the paths above, the files will be stored in `build/` and not committed. This will be changed once we're confident about the metadata.
Eventually, `src/etc/license-metadata.json` will be committed into the repository and verified to be up to date by CI (similar to our GitHub Actions configuration), to avoid having people install REUSE on their local machine in most cases.
You can see the (incorrect) generated files in https://gist.github.com/pietroalbini/3f3f22b6f9cc8533abf7494b6a50cf97.
r? `@pnkfelix`
