Rollup of 9 pull requests
Successful merges:
- #128511 (Document WebAssembly target feature expectations)
- #129243 (do not build `cargo-miri` by default on stable channel)
- #129263 (Add a missing compatibility note in the 1.80.0 release notes)
- #129276 (Stabilize feature `char_indices_offset`)
- #129350 (adapt integer comparison tests for LLVM 20 IR changes)
- #129408 (Fix handling of macro arguments within the `dropping_copy_types` lint)
- #129426 (rustdoc-search: use tighter json for names and parents)
- #129437 (Fix typo in a help diagnostic)
- #129457 (kobzol vacation)
r? `@ghost`
`@rustbot` modify labels: rollup
Document WebAssembly target feature expectations
This commit is a result of the discussion on #128475 and incorporates parts of #109807 as well. This is all done as a new page of documentation for the `wasm32-unknown-unknown` target which previously did not exist. This new page goes into details about the preexisting target and additionally documents the expectations for WebAssembly features and code generation.
The tl;dr is that LLVM will enable features over time after most engines have had support for awhile. Compiling without features requires `-Ctarget-cpu=mvp` to rustc plus `-Zbuild-std` to Cargo.
Closes#109807Closes#119811Closes#128475
Fix extern crates not being hidden with `doc(hidden)`
Fixes#126796.
Only the current crate should never be stripped, any other crate should be strippable.
r? ``@notriddle``
Migrate `x86_64-fortanix-unknown-sgx-lvi` `run-make` test to rmake
Part of #121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).
The final Makefile! Every Makefile test is now claimed.
This is difficult to test due to the uncommon architecture it is specific to. I don't think it is in the CI (I didn't find it in `jobs.yml`, but if there is a way to test it, please do.
Locally, on Linux, it compiles and panics at the `llvm_filecheck` part (if I replace the `x86_64-fortanix-unknown-sgx` with `x86_64-unknown-linux-gnu`, of course), which is expected.
For this reason, the Makefile and associated script have been kept, but with a leading underscore.
Ship MinGW-w64 runtime DLLs along with `rust-lld.exe` for `-pc-windows-gnu` targets
`rust-lld.exe` built for `x86_64-pc-windows-gnu` depends on `libgcc_s_seh-1.dll` and `libwinpthread-1.dll` from MinGW-w64. Until now, they were not shipped alongside `rust-lld.exe`, and you could not run `rust-lld.exe` on most systems.
This problem didn't surface until now because:
* Most targets don't use `rust-lld` by default.
* Some people had these DLLs in their `PATH` from some other MinGW binary.
* `rustup` used to add `bin` to the `PATH`, which contains these DLLs for `rustc.exe`. But it no longer does that: ce3c09a0cbFixes#125809
try-job: dist-x86_64-mingw
Revert #129187 and #129302
The two PRs naively switched to `std::fs::remove_dir_all`, but failed to gracefully handle the failure case where the top-level directory entry does not exist, causing https://github.com/rust-lang/rust/pull/129187#issuecomment-2304849757 `./x clean` to fail locally when `tmp` does not exist.
I plan to reland the two PRs with fixed top-level dir entry handling and more testing, but let's quickly revert to unblock people.
Reverts #129187.
Reverts #129302.
r? bootstrap
Make Tree Borrows Provenance GC no longer produce stack overflows
Most functions operating on Tree Borrows' trees are carefully written to not cause stack overflows due to too much recursion. The one exception is [`Tree::keep_only_needed`](94f5588faf/src/borrow_tracker/tree_borrows/tree.rs (L724)), which just uses regular recursion.
This function is part of the provenance GC, so it is called regularly for every allocation in the program.
Tests show that this is a problem in practice. For example, the test `fill::horizontal_line` in crate `tiny-skia` (version 0.11.4) is such a test.
This PR changes this, this test no now longer crashes. Instead, it succeeds (after a _long_ time).
Update cargo
12 commits in ba8b39413c74d08494f94a7542fe79aa636e1661..8f40fc59fb0c8df91c97405785197f3c630304ea
2024-08-16 22:48:57 +0000 to 2024-08-21 22:37:06 +0000
- Tests rely on absence of RUST_BACKTRACE (rust-lang/cargo#14441)
- fix: -Cmetadata includes whether extra rustflags is same as host (rust-lang/cargo#14432)
- [mdman] Normalize newlines when rendering options (rust-lang/cargo#14428)
- fix: doctest respects Cargo's color options (rust-lang/cargo#14425)
- Be more permissive while packaging unpublishable crates. (rust-lang/cargo#14408)
- fix: Limiting pre-release match semantics to use only on `OptVersionReq::Req` (rust-lang/cargo#14412)
- test: add a regression test for Issue 14409 (rust-lang/cargo#14430)
- chore: update label trigger for Command-info (rust-lang/cargo#14422)
- doc: add lockfile-path unstable doc section (rust-lang/cargo#14423)
- doc: update lockfile-path tracking issue (rust-lang/cargo#14424)
- fix: remove list owners feature of info subcommand (rust-lang/cargo#14418)
- Lockfile path tests (follow-up) (rust-lang/cargo#14417)
Force `LC_ALL=C` for all run-make tests
This PR adds `LC_ALL=C` for all run-make tests so that they become locale independent.
Fixes#129362
r? `@jieyouxu`
compiletest: use `std::fs::remove_dir_all` now that it is available
It turns out `aggressive_rm_rf` is not sufficiently aggressive (RAGEY) on Windows and obviously handles Windows symlinks incorrectly. Instead of rolling our own version, let's use `std::fs::remove_dir_all` now that it's available (well, it's been available for a good while, but probably wasn't available when this helper was written).
cc #129187 since basically this is failing due to similar problems.
Blocker for #128562.
Fixes#129155.
Fixes#126334.
improve submodule updates
During config parsing, some bootstrap logic (e.g., `download-ci-llvm`) checks certain sources (for `download-ci-llvm`, it's `src/llvm-project`) and acts based on their state. This means that if path is a git submodule, bootstrap needs to update it before checking its state. Otherwise it may make incorrect assumptions by relying on outdated sources. To enable submodule updates during config parsing, we need to move the `update_submodule` function from the `Build` to `Config`, so we can access to it during the parsing process.
Closes#122787
bootstrap: fix clean's remove_dir_all implementation
It turns out bootstrap's `clean.rs`'s hand-rolled `rm_rf` (which probably comes before `std::fs::remove_dir_all` was stable) is very broken on native Windows around both read-only files/directories and especially symbolic links. So instead of rolling our own, just use `std::fs::remove_dir_all`.
This is a blocker for compiletest's own `rm_rf` implementation #129155 which happens to be also buggy, which in turn is a blocker for the rmake.rs test port #128562 that heavily exercises symlinks (I was reviewing #128562 and testing it on native Windows which is how I found out).
I also left a FIXME for `detect_src_and_out` due to a failing assertion on native Windows (opened #129188):
```
---- core::config::tests::detect_src_and_out stdout ----
thread 'core::config::tests::detect_src_and_out' panicked at src\core\config\tests.rs:72:13:
assertion `left == right` failed
left: "E:\\tmp"
right: "C:\\tmp"
```
Fixes#112544 (because now we handle Windows symlinks properly).
try-job: x86_64-msvc
try-job: i686-mingw
try-job: test-various
try-job: armhf-gnu
try-job: aarch64-apple
try-job: aarch64-gnu
