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resolve: Preserve reexport chains in `ModChild`ren
This may be potentially useful for
- avoiding uses of `hir::ItemKind::Use` (which usually lead to correctness issues)
- preserving documentation comments on all reexports, including those from other crates
- preserving and checking stability/deprecation info on reexports
- all kinds of diagnostics
The second commit then migrates some hacky logic from rustdoc to `module_reexports` to make it simpler and more correct.
Ideally rustdoc should use `module_reexports` immediately at the top level, so `hir::ItemKind::Use`s are never used.
The second commit also fixes issues with https://github.com/rust-lang/rust/pull/109330 and therefore
Fixes https://github.com/rust-lang/rust/issues/109631
Fixes https://github.com/rust-lang/rust/issues/109614
Fixes https://github.com/rust-lang/rust/issues/109424
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Document that `&T` and `&mut T` are `Sync` if `T` is
Proof: https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=fec8dc9ec36e873bf2962a2367d67045
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enkron:u/enkron/substitute-hardcoded-port-num-in-listen-on-fn, r=the8472
chore(tcp): change a hardcoded port number in a doctest to `port` var
The `listen_on` function in the example has a `port` option but doesn't use it
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Stabilize is_some_and
This stabilizes the following public API:
```rust
impl<T> Option<T> {
pub fn is_some_and(self, f: impl FnOnce(T) -> bool) -> bool;
}
impl<T, E> Result<T, E> {
pub fn is_ok_and(self, f: impl FnOnce(T) -> bool) -> bool;
pub fn is_err_and(self, f: impl FnOnce(E) -> bool) -> bool;
}
```
Closes #93050 (tracking issue).
`@rustbot` label +T-libs-api -T-libs
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Remove an unnecessary `mut` in `BufWriter::into_parts`.
`ptr::read` takes `*const T` so `&mut` is not necessary.
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Fix buffer overrun in bootstrap and (test-only) symlink_junction
I don't think these can be hit in practice, due to their inputs being valid paths. It's also not security-sensitive code, but just... bad vibes.
I think this is still not really the right way to do this (in terms of path correctness), but is no worse than it was.
r? `@ChrisDenton`
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Workaround #109797 on windows-gnu
The addition of `#[inline]` here in https://github.com/rust-lang/rust/pull/108089 caused an unrelated linking issue (https://github.com/rust-lang/rust/issues/109797). This PR removes this attribute again on Windows to avoid regressions.
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The `listen_on` function in the example has a `port` option but doesn't
use it
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`ptr::read` takes `*const T` so `&mut` is not necessary.
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Implement read_buf for RustHermit
In principle, this PR extends rust-lang/rust#108326 for RustyHermit.
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Move `doc(primitive)` future incompat warning to `invalid_doc_attributes`
Fixes #88070.
It's been a while since this was turned into a "future incompatible lint" so I think we can now turn it into a hard error without problem.
r? `@jyn514`
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Partial stabilization of `once_cell`
This PR aims to stabilize a portion of the `once_cell` feature:
- `core::cell::OnceCell`
- `std::cell::OnceCell` (re-export of the above)
- `std::sync::OnceLock`
This will leave `LazyCell` and `LazyLock` unstabilized, which have been moved to the `lazy_cell` feature flag.
Tracking issue: https://github.com/rust-lang/rust/issues/74465 (does not fully close, but it may make sense to move to a new issue)
Future steps for separate PRs:
- ~~Add `#[inline]` to many methods~~ #105651
- Update cranelift usage of the `once_cell` crate
- Update rust-analyzer usage of the `once_cell` crate
- Update error messages discussing once_cell
## To be stabilized API summary
```rust
// core::cell (in core/cell/once.rs)
pub struct OnceCell<T> { .. }
impl<T> OnceCell<T> {
pub const fn new() -> OnceCell<T>;
pub fn get(&self) -> Option<&T>;
pub fn get_mut(&mut self) -> Option<&mut T>;
pub fn set(&self, value: T) -> Result<(), T>;
pub fn get_or_init<F>(&self, f: F) -> &T where F: FnOnce() -> T;
pub fn into_inner(self) -> Option<T>;
pub fn take(&mut self) -> Option<T>;
}
impl<T: Clone> Clone for OnceCell<T>;
impl<T: Debug> Debug for OnceCell<T>
impl<T> Default for OnceCell<T>;
impl<T> From<T> for OnceCell<T>;
impl<T: PartialEq> PartialEq for OnceCell<T>;
impl<T: Eq> Eq for OnceCell<T>;
```
```rust
// std::sync (in std/sync/once_lock.rs)
impl<T> OnceLock<T> {
pub const fn new() -> OnceLock<T>;
pub fn get(&self) -> Option<&T>;
pub fn get_mut(&mut self) -> Option<&mut T>;
pub fn set(&self, value: T) -> Result<(), T>;
pub fn get_or_init<F>(&self, f: F) -> &T where F: FnOnce() -> T;
pub fn into_inner(self) -> Option<T>;
pub fn take(&mut self) -> Option<T>;
}
impl<T: Clone> Clone for OnceLock<T>;
impl<T: Debug> Debug for OnceLock<T>;
impl<T> Default for OnceLock<T>;
impl<#[may_dangle] T> Drop for OnceLock<T>;
impl<T> From<T> for OnceLock<T>;
impl<T: PartialEq> PartialEq for OnceLock<T>
impl<T: Eq> Eq for OnceLock<T>;
impl<T: RefUnwindSafe + UnwindSafe> RefUnwindSafe for OnceLock<T>;
unsafe impl<T: Send> Send for OnceLock<T>;
unsafe impl<T: Sync + Send> Sync for OnceLock<T>;
impl<T: UnwindSafe> UnwindSafe for OnceLock<T>;
```
No longer planned as part of this PR, and moved to the `rust_cell_try` feature gate:
```rust
impl<T> OnceCell<T> {
pub fn get_or_try_init<F, E>(&self, f: F) -> Result<&T, E> where F: FnOnce() -> Result<T, E>;
}
impl<T> OnceLock<T> {
pub fn get_or_try_init<F, E>(&self, f: F) -> Result<&T, E> where F: FnOnce() -> Result<T, E>;
}
```
I am new to this process so would appreciate mentorship wherever needed.
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Use `getentropy()` instead of `/dev/urandom` on Emscripten
`/dev/urandom` is usually available on Emscripten, except when using
the special `NODERAWFS` filesystem backend, which replaces all normal
filesystem access with direct Node.js operations.
Since this filesystem backend directly access the filesystem on the
OS, it is not recommended to depend on `/dev/urandom`, especially
when trying to run the Wasm binary on OSes that are not Unix-based.
This can be considered a non-functional change, since Emscripten
implements `/dev/urandom` in the same way as `getentropy()` when not
linking with `-sNODERAWFS`.
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Move items not part of this stabilization to 'lazy_cell' or 'once_cell_try'
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Use random `HashMap` keys on Hermit
Initializing the keys with random data provided by the libOS avoids HashDOS attacks and similar issues.
CC `@stlankes`
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Support TLS access into dylibs on Windows
This allows access to `#[thread_local]` in upstream dylibs on Windows by introducing a MIR shim to return the address of the thread local. Accesses that go into an upstream dylib will call the MIR shim to get the address of it.
`convert_tls_rvalues` is introduced in `rustc_codegen_ssa` which rewrites MIR TLS accesses to dummy calls which are replaced with calls to the MIR shims when the dummy calls are lowered to backend calls.
A new `dll_tls_export` target option enables this behavior with a `false` value which is set for Windows platforms.
This fixes https://github.com/rust-lang/rust/issues/84933.
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In principle, this PR extends rust-lang/rust#108326 for RustyHermit.
Signed-off-by: Stefan Lankes <slankes@eonerc.rwth-aachen.de>
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Add OpenHarmony targets
- `aarch64-unknown-linux-ohos`
- `armv7-unknown-linux-ohos`
Compiler team MCP: https://github.com/rust-lang/compiler-team/issues/568
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- `aarch64-unknown-linux-ohos`
- `armv7-unknown-linux-ohos`
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socket ancillary data implementation for FreeBSD (from 13 and above).
introducing new build config as well.
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introducing new build config as well.
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Remove unnecessary raw pointer in __rust_start_panic arg
It is no longer necessary as __rust_start_panic switched to the Rust abi.
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Follow C-RW-VALUE in std::io::Cursor example
rustc-dev-guide says to do this:
r? ``@steveklabnik``
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r=m-ou-se,the8472
Stabilize `nonnull_slice_from_raw_parts`
FCP is done: https://github.com/rust-lang/rust/issues/71941#issuecomment-1100910416
Note that this doesn't const-stabilize `NonNull::slice_from_raw_parts` as `slice_from_raw_parts_mut` isn't const-stabilized yet. Given #67456 and #57349, it's not likely available soon, meanwhile, stabilizing only the feature makes some sense, I think.
Closes #71941
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It is no longer necessary as __rust_start_panic switched to the Rust abi.
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Remove outdated comments
What the title said
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fix typo in the creation of OpenOption for RustyHermit
Due to this typo we have to build a workaround for issue hermitcore/libhermit-rs#191.
RustyHermit is a tier 3 platform and backward compatibility does not have to be guaranteed.
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Add block-based mutex unlocking example
This modifies the existing example in the Mutex docs to show both `drop()` and block based early unlocking.
Alternative to #81872, which is getting closed.
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workingjubilee:crouching-ioerror-hidden-documentation, r=ChrisDenton
Clarify `Error::last_os_error` can be weird
Fundamentally, querying the OS for error codes is a process that is deeply subject to the whims of chance and fortune. We can account for OS, but not for every combination of platform APIs. A compiled binary may not recognize new errors introduced years later. We should clarify a few especially odd situations, and what they mean: We can effectively promise nothing... if you ask for Rust to decode errors where none have occurred.
This allows removing mention of ErrorKind::Uncategorized.
That error variant is hidden deliberately, so we should not explicitly mention it.
This fixes #106937.
Since you had an opinion also: Does this solution seem acceptable?
r? ``@ChrisDenton``
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Drop all messages in bounded channel when destroying the last receiver
Fixes #107466 by splitting the `disconnect` function for receivers/transmitters and dropping all messages in `disconnect_receivers` like the unbounded channel does. Since all receivers must be dropped before the channel is, the messages will already be discarded at that point, so the `Drop` implementation for the channel can be removed.
``@rustbot`` label +T-libs +A-concurrency
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Windows: make `Command` prefer non-verbatim paths
When spawning Commands, the path we use can end up being queried using `env::current_exe` (or the equivalent in other languages). Not all applications handle these paths properly therefore we should have a stronger preference for non-verbatim paths when spawning processes.
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Implement read_buf for a few more types
Implement read_buf for TcpStream, Stdin, StdinLock, ChildStdout,
ChildStderr (and internally for AnonPipe, Handle, Socket), so
that it skips buffer initialization.
The other provided methods like read_to_string and read_to_end are
implemented in terms of read_buf and so benefit from the optimization
as well.
This commit also implements read_vectored and is_read_vectored where
applicable.
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Distribute libntdll.a with windows-gnu toolchains
This allows the OS loader to load essential functions (e.g. read/write file) at load time instead of lazily doing so at runtime.
r? libs
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Co-authored-by: Josh Stone <cuviper@gmail.com>
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