- While working on process env support, I found that args were currently
broken. Not sure how I missed it in the PR, but well here is the fix.
- Additionally, no point in adding space at the end of args.
Signed-off-by: Ayush Singh <ayush@beagleboard.org>
Add missing allocator safety in alloc crate
### PR Description
In the previous PR [#135009](https://github.com/rust-lang/rust/pull/135009), PR [#134496](https://github.com/rust-lang/rust/pull/134496), some incomplete API documentation issues have been fixed.
Based on these changes, other inconsistencies related to the allocator have also been identified, including:
- `Box::from_non_null`
- `Box::from_non_null_in`
- `Weak::from_raw`
Enable `unreachable_pub` lint in `alloc`
This PR enables the [`unreachable_pub`](https://doc.rust-lang.org/rustc/lints/listing/allowed-by-default.html#unreachable-pub) lint as warn in the `alloc` crate.
Most of changes are in the btree implementation and in tests.
*The diff was mostly generated with `./x.py fix --stage 1 library/alloc/ -- --broken-code`, as well as manual edits for code in macros and in tests.*
Continuation of #134286 and #135366
r? libs
Put the core unit tests in a separate coretests package
Having standard library tests in the same package as a standard library crate has bad side effects. It causes the test to have a dependency on a locally built standard library crate, while also indirectly depending on it through libtest. Currently this works out fine in the context of rust's build system as both copies are identical, but for example in cg_clif's tests I've found it basically impossible to compile both copies with the exact same compiler flags and thus the two copies would cause lang item conflicts.
This PR moves the tests of libcore to a separate package which doesn't depend on libcore, thus preventing the duplicate crates even when compiler flags don't exactly match between building the sysroot (for libtest) and building the test itself. The rest of the standard library crates do still have this issue however.
compiler_fence: fix example
The old example was wrong, an acquire fence is required in the signal handler. To make the point more clear, I changed the "data" variable to use non-atomic accesses.
Fixes https://github.com/rust-lang/rust/issues/133014
Move `std::io::pipe` code into its own file
Also update the docs for the new location, create a section "Platform-specific behavior", don't hide required imports for code examples.
Rollup of 7 pull requests
Successful merges:
- #133631 (Support QNX 7.1 with `io-sock`+libstd and QNX 8.0 (`no_std` only))
- #134358 (compiler: Set `target_abi = "ilp32e"` on all riscv32e targets)
- #135812 (Fix GDB `OsString` provider on Windows )
- #135842 (TRPL: more backward-compatible Edition changes)
- #135946 (Remove extra whitespace from rustdoc breadcrumbs for copypasting)
- #135953 (ci.py: check the return code in `run-local`)
- #136019 (Add an `unchecked_div` alias to the `Div<NonZero<_>>` impls)
r? `@ghost`
`@rustbot` modify labels: rollup
Support QNX 7.1 with `io-sock`+libstd and QNX 8.0 (`no_std` only)
Changes of this pull request:
1. Refactor code for qnx nto targets to share more code in file `nto_qnx.rs`
1. Add support for an additional network stack on nto qnx 7.1.
QNX 7.1 supports two network stacks:
1. `io-pkt`, which is default
2. `io-sock`, which is optional on 7.1 but default in QNX 8.0
As one can see in the [io-sock migration notes](https://www.qnx.com/developers/docs/7.1/index.html#com.qnx.doc.neutrino.io_sock/topic/migrate_app.html), this changes the libc API in a way similar to e.g. linux-gnu vs. linux-musl.
This change adds a new target which has a different value for `target_env`, so that e.g. libc can distinguish between both APIs.
2. Add initial support for QNX 8.0, thanks to AkhilTThomas. As it turned out, the problem with forking many processes still exists in QNX 8.0. Because if this, we are now using it for any QNX version (i.e. not check for `target_env` anymore).
Update emscripten std tests
This disables a bunch of emscripten tests that test things emscripten doesn't support and re-enables a whole bunch of tests which now work just fine on emscripten.
Tested with `EMCC_CFLAGS="-s MAXIMUM_MEMORY=2GB" ./x.py test library/ --target wasm32-unknown-emscripten`.
fix(libtest): Deprecate '--logfile'
rust-lang/testing-devex-team#9 proposed changing the behavior of `--logfile`. The given reasons were:
(1) Bazel can't programmatically process stdout. This seems like a limitation in Bazel and we recommend focusing on that. If we look at the wider Rust ecosystem, Rustc and Cargo don't support any such mechanism and the Cargo team rejected having one. Expecting this in libtest when its not supported elsewhere seems too specialized.
(2) Tests that leak out non-programmatic output that intermixes with programmatic output. We acknowledge this is a problem to be evaluated but we need to make sure we are stepping back and gathering requirements, rather than assuming `--logfile` will fit the needs.
Independent of the motive, regarding using or changing `--logfile`
(1) Most ways to do it would be a breaking change, like if we respect any stable `--format`. As suggested above, we could specialize this to new `--format` values but that would be confusing for some values to apply but not others.
(2) Other ways of solving this add new features to lib`test` when we are instead wanting to limit the feature set it has to minimize the compatibility surface that has to be maintained and the burden it would put on third party harnesses which are a focus area. Examples include `--format compact` or a `--log-format` flag
(3) The existence of `--logfile` dates back quite a ways (5cc050b265, rust-lang/rust#2127) and the history gives the
impression this more of slipped through rather than being an intended feature (see also
https://github.com/rust-lang/rust/pull/82350#discussion_r579732071). Deprecation would better match to how it has been treated. By deprecating this, we do not expect custom test harnesses (rust-lang/testing-devex-team#2) to implement this.
T-testing-devex held an FCP for deprecating in rust-lang/testing-devex-team#9 though according to
[RFC #3455](https://rust-lang.github.io/rfcs/3455-t-test.html), this is still subject to final approval from T-libs-api.
Closesrust-lang/testing-devex-team#9
- Simplify some of the language
- Minor grammar fixes
- Don't imply that pipes *only* work across multiple processes; instead,
*suggest* that they're typically used across two or more separate
processes.
- Specify that portable applications cannot use multiple readers or
multiple writers for messages larger than a byte, due to potential
interleaving.
- Remove no-longer-referenced footnote URLs.
Fix set_name in thread mod for NuttX
Replace `pthread_set_name_np` with `pthread_setname_np` for NuttX in the `set_name` function, this change aligns the implementation with the correct API available on NuttX
This patch ensures thread naming works correctly on NuttX platforms.
See also:
0f9f8c91ad/src/unix/nuttx/mod.rs (L562)8f3a2a6f76/include/pthread.h (L511-L514)
Fix `FormattingOptions` instantiation with `Default`
The `fill` value by default should be set to `' '` (space), but the current implementation uses `#[derive(Default)]` which sets it to `\0`.
Note that `FormattingOptions` is being released as part of 1.85 (unstable) - so this might warrant a backport to that branch.
Tracking issue: https://github.com/rust-lang/rust/issues/118117
Follow up from https://github.com/rust-lang/rust/pull/118159
CC: ``@EliasHolzmann`` ``@programmerjake``
r? ``@m-ou-se``
Add memory layout documentation to generic NonZero<T>
The documentation I've added is based on the same Layout documentation that appears on the other `NonZero*` types. For example see [the Layout docs on `NonZeroI8`](https://doc.rust-lang.org/std/num/type.NonZeroI8.html#layout-1).
Add `File already exists` error doc to `hard_link` function
## Description
If the link path already exists, the error `AlreadyExists` is returned. This commit adds this error to the docs.
I tested it with the current rust master version, this error was returned when there is already a link for the file is present.
This was the error returned:
```
[harshit:../Desktop/rust_compiler_testing/hard_link (master|…5)] cargo +stage1 run
Compiling hard_link v0.1.0 (/home/harshit/Desktop/rust_compiler_testing/hard_link)
Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
Running `target/debug/hard_link`
Err(Os { code: 17, kind: AlreadyExists, message: "File exists" })
```
This is my first PR on rust, any suggestions on which issue I can take next are most welcome 😄Fixes#130117
rust-lang/testing-devex-team#9 proposed changing the behavior of `--logfile`.
The given reasons were:
(1) Bazel can't programmatically process stdout. This seems like a
limitation in Bazel and we recommend focusing on that. If we look at
the wider Rust ecosystem, Rustc and Cargo don't support any such
mechanism and the Cargo team rejected having one. Expecting this in
libtest when its not supported elsewhere seems too specialized.
(2) Tests that leak out non-programmatic output that intermixes with
programmatic output. We acknowledge this is a problem to be evaluated
but we need to make sure we are stepping back and gathering
requirements, rather than assuming `--logfile` will fit the needs.
Independent of the motive, regarding using or changing `--logfile`
(1) Most ways to do it would be a breaking change, like if we respect
any stable `--format`. As suggested above, we could specialize this to
new `--format` values but that would be confusing for some values to
apply but not others.
(2) Other ways of solving this add new features to lib`test` when we are
instead wanting to limit the feature set it has to minimize the
compatibility surface that has to be maintained and the burden it would
put on third party harnesses which are a focus area. Examples include
`--format compact` or a `--log-format` flag
(3) The existence of `--logfile` dates back quite a ways
(5cc050b265,
rust-lang/rust#2127) and the history gives the
impression this more of slipped through rather than being an intended
feature (see also
https://github.com/rust-lang/rust/pull/82350#discussion_r579732071).
Deprecation would better match to how it has been treated.
By deprecating this, we do not expect custom test harnesses
(rust-lang/testing-devex-team#2) to implement this.
T-testing-devex held an FCP for deprecating in rust-lang/testing-devex-team#9
though according to
[RFC #3455](https://rust-lang.github.io/rfcs/3455-t-test.html),
this is still subject to final approval from T-libs-api.
