epoll_ctl: throw unsupported error on unsupported opcode
`@tiif` this is a somewhat suspicious "return -1" without setting the `errno` -- what is the reasoning behind that?
Throwing a clear error seems better to me.
linkchecker: add a reminder on broken links to add new/renamed pages to `SUMMARY.md` for mdBooks
I spent an embarrassingly long amount of time trying to figure out why CI was failing for a PR adding new platform support docs. In turns out it's because the PR author didn't register the new page in `SUMMARY.md`. I completely forgot about it too, and was reading linkchecker source because I thought it was a bug in linkchecker.
So this PR adds a note to modify `SUMMARY.md` when adding new pages in a mdBook.
E.g.
```
# Adding a new `meow` target but forgor to register the page in `SUMMARY.md`
rustc\platform-support.html:183: broken link - `rustc\platform-support\meow.html`
rustc\print.html:9730: broken link - `rustc\platform-support\meow.html`
checked links in: 19.1s
number of HTML files scanned: 43588
number of HTML redirects found: 13735
number of links checked: 3145951
number of links ignored due to external: 156244
number of links ignored due to exceptions: 9
number of intra doc links ignored: 8
errors found: 2
NOTE: if you are adding or renaming a markdown file in a mdBook, don't forget to register the page in SUMMARY.md
found some broken links
```
stabilize Strict Provenance and Exposed Provenance APIs
Given that [RFC 3559](https://rust-lang.github.io/rfcs/3559-rust-has-provenance.html) has been accepted, t-lang has approved the concept of provenance to exist in the language. So I think it's time that we stabilize the strict provenance and exposed provenance APIs, and discuss provenance explicitly in the docs:
```rust
// core::ptr
pub const fn without_provenance<T>(addr: usize) -> *const T;
pub const fn dangling<T>() -> *const T;
pub const fn without_provenance_mut<T>(addr: usize) -> *mut T;
pub const fn dangling_mut<T>() -> *mut T;
pub fn with_exposed_provenance<T>(addr: usize) -> *const T;
pub fn with_exposed_provenance_mut<T>(addr: usize) -> *mut T;
impl<T: ?Sized> *const T {
pub fn addr(self) -> usize;
pub fn expose_provenance(self) -> usize;
pub fn with_addr(self, addr: usize) -> Self;
pub fn map_addr(self, f: impl FnOnce(usize) -> usize) -> Self;
}
impl<T: ?Sized> *mut T {
pub fn addr(self) -> usize;
pub fn expose_provenance(self) -> usize;
pub fn with_addr(self, addr: usize) -> Self;
pub fn map_addr(self, f: impl FnOnce(usize) -> usize) -> Self;
}
impl<T: ?Sized> NonNull<T> {
pub fn addr(self) -> NonZero<usize>;
pub fn with_addr(self, addr: NonZero<usize>) -> Self;
pub fn map_addr(self, f: impl FnOnce(NonZero<usize>) -> NonZero<usize>) -> Self;
}
```
I also did a pass over the docs to adjust them, because this is no longer an "experiment". The `ptr` docs now discuss the concept of provenance in general, and then they go into the two families of APIs for dealing with provenance: Strict Provenance and Exposed Provenance. I removed the discussion of how pointers also have an associated "address space" -- that is not actually tracked in the pointer value, it is tracked in the type, so IMO it just distracts from the core point of provenance. I also adjusted the docs for `with_exposed_provenance` to make it clear that we cannot guarantee much about this function, it's all best-effort.
There are two unstable lints associated with the strict_provenance feature gate; I moved them to a new [strict_provenance_lints](https://github.com/rust-lang/rust/issues/130351) feature since I didn't want this PR to have an even bigger FCP. ;)
`@rust-lang/opsem` Would be great to get some feedback on the docs here. :)
Nominating for `@rust-lang/libs-api.`
Part of https://github.com/rust-lang/rust/issues/95228.
[FCP comment](https://github.com/rust-lang/rust/pull/130350#issuecomment-2395114536)
Replace set_last_error with set_last_error_and_return
Took care of the simple patterns. Other patterns involved setting an error and then using `write_int` or setting metadata and returning -1. Unsure if those are in the scope of this change
Looks like this has conflicts with #3779, so I can update when how to handle that is decided.
Part of https://github.com/rust-lang/miri/issues/3930.
Add `set_last_error_and_return_i64`, change calls from
`this.libc_eval` to `LibcError`, and replace pairs of
`set_last_error` and returning values of the right type
with the new helper functions
Rollup of 4 pull requests
Successful merges:
- #126588 (Added more scenarios where comma to be removed in the function arg)
- #131728 (bootstrap: extract builder cargo to its own module)
- #131968 (Rip out old effects var handling code from traits)
- #131981 (Remove the `BoundConstness::NotConst` variant)
r? `@ghost`
`@rustbot` modify labels: rollup
Rip out old effects var handling code from traits
Traits no longer have an effect parameter, so this removes logic associated with it. It also removes logic surrounding confirming `~const Destruct` bounds, which I added a looooong time ago, and which I don't feel like we need anymore -- if it needs to be added back, it should be rewritten :D
cc `@fee1-dead`
Continue to get rid of `ty::Const::{try_}eval*`
This PR mostly does:
* Removes all of the `try_eval_*` and `eval_*` helpers from `ty::Const`, and replace their usages with `try_to_*`.
* Remove `ty::Const::eval`.
* Rename `ty::Const::normalize` to `ty::Const::normalize_internal`. This function is still used in the normalization code itself.
* Fix some weirdness around the `TransmuteFrom` goal.
I'm happy to split it out further; for example, I could probably land the first part which removes the helpers, or the changes to codegen which are more obvious than the changes to tools.
r? BoxyUwU
Part of https://github.com/rust-lang/rust/issues/130704
compiletest: tidy up how `tidy` and `tidy` (html version) are disambiguated
Rename `has_tidy` -> `has_html_tidy` (`tidy` is also a bootstrap tool, but rustdoc uses a html tidy that has the same binary name). Follow-up to #131941.
Also apparently `runtest.rs` is short enough now, we can delete the `tidy` (bootstrap version) ignore for file length.
Register `src/tools/unicode-table-generator` as a runnable tool
It seems like `src/tools/unicode-table-generator` is not currently managed by bootstrap. This PR wires it up with bootstrap as a runnable tool.
This tool seems to take two possible args:
1. (Mandatory) path to `library/core/src/unicode/unicode_data.rs`, and
2. (Optional) path to generate a test file.
I only passed the mandatory path to `unicode_data.rs` in bootstrap and didn't do anything about (2). I'm not sure about how this tool is supposed to be run.
`Cargo.lock` is modified because I renamed `unicode-table-generator`'s bin name to match the tool name, as bootstrap's tool running logic expects the bin name to be derived from the tool name.
I also added a triagebot message to remind to not manually edit the library source file and edit the tool then regenerate instead, but this should probably be a tidy check (if that's desirable then that can be in a follow-up PR, though may be overkill).
Helps with #131640 but does not close it because still no docs.
r? `@Mark-Simulacrum` (since I think you authored this tool?)
Allow `#[deny]` inside `#[forbid]` as a no-op
Forbid cannot be overriden. When someome tries to do this anyways, it results in a hard error. That makes sense.
Except it doesn't, because macros. Macros may reasonably use `#[deny]` (or `#[warn]` for an allow-by-default lint) in their expansion to assert that their expanded code follows the lint. This is doesn't work when the output gets expanded into a `forbid()` context. This is pretty silly, since both the macros and the code agree on the lint!
By making it a warning instead, we remove the problem with the macro, which is now nothing as warnings are suppressed in macro expanded code, while still telling users that something is up.
fixes#121483
compiler: Adopt rust-analyzer impls for `LayoutCalculatorError`
We're about to massively churn the internals of `rustc_abi`. To minimize the immediate and future impact on rust-analyzer, as a subtree that depends on this crate, grow some API on `LayoutCalculatorError` that reflects their uses of it. This way we can nest the type in theirs, and they can just call functions on it without having to inspect and flatten-out its innards.
compiletest: disambiguate html-tidy from rust tidy tool
when i first saw this error message i was very confused, i thought it was talking about `src/tools/tidy`. now it should be much more clear what tool should be installed.
