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)
speedup directory traversal on windows
Optimizes walking over dirs on windows by replacing `FindFirstFileW` with `FindFirstFileExW` with `FindExInfoBasic` option, that allows skipping filling unused struct field which should be faster.
Also adds the same change for fallback call of `FindFirstFileExW` in metadata call.
Locally shows small speedup, but bench results from other users are welcome.
Finish stabilization of `result_ffi_guarantees`
The internal linting has been changed, so all that is left is making sure we stabilize what we want to stabilize.
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`
bootstrap: extract builder cargo to its own module
I was looking at our cargo rustflags/rustdocflags usages, and I found `builder.rs` to be a large
file which made it hard to digest. This PR tries to break out the cargo command wrapper parts to
its own submodule to make it easier to identify builder cargo-specific logic.
This PR:
- Extracts the cargo command wrapper to its own module and also move `Builder::{bare_,}cargo` impl
to the submodule.
- Reorganizes some imports in `lib.rs` (no functional changes).
- Slightly adjusts some docs in `builder.rs`.
This PR is basically just moving code around, and should not contain any functional changes.
Before this PR, `builder.rs` was 2743 lines. After this PR, `builder.rs` is down to a more
manageable 1386 lines and `cargo.rs` is 1085 lines.
Added more scenarios where comma to be removed in the function arg
This is an attempt to address the problem methion in https://github.com/rust-lang/rust/issues/106304#issuecomment-1837273666.
Copy the annotation to explain the fix
If the next Error::Extra ("next") doesn't next to current ("current")
```
fn foo(_: (), _: u32) {}
- foo("current", (), 1u32, "next")
+ foo((), 1u32)
```
If the previous error is not a `Error::Extra`, then do not trim the next comma
```
- foo((), "current", 42u32, "next")
+ foo((), 42u32)
```
Frankly, this is a fix from a test case and may not cover all scenarios
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
I found builder.rs to be a massive file which made it hard to digest. To
make `RUSTFLAGS` usage hardening easier later, I extracted the cargo
part in `builder.rs` into its own module.
ci update freebsd version proposal, freebsd 12 being eol
raising to the lowest still active supported freebsd version.
From 13.1 (already eol too), freebsd introduces a cpu affinity layer
with linux. It also introduces a api compatible copy_file_range which
can be used like its linux's counterpart.
The former is essential to build https://github.com/rust-lang/rust/pull/120589, therefore breaks the backward
compatibility with the previous FreeBSD releases.
Blocked on https://github.com/rust-lang/rust/issues/130465
feat(rustdoc-json-types): mark simple enums as copy
Fixesrust-lang/rustdoc-types#26 and some typos in the documentation
r? `@aDotInTheVoid`
I have been assigning these PRs to you `@aDotInTheVoid,` is that okay? I think I'm out of PRs for now, but for future reference c:
fix(rustdoc-json-types): document rustc-hash feature
The `rustc-hash` feature is publicly exposed by the `rustdoc-types`. It is already documented in that crate's README and Cargo.toml, but we might as well add some information to the crate docs themselves c:
Follow up to:
- #131936
- [rust-lang/rustdoc-types#42][1]
[1]: https://github.com/rust-lang/rustdoc-types/pull/42
r? `@aDotInTheVoid`
Remove `lower_mono_bounds`
I'm not convinced about the usefulness of `lower_mono_bounds`, especially since we have *so* many lower-bound-like fns in HIR lowering, so I've just inlined it into its callers.
`optimize` attribute applied to things other than methods/functions/c…
…losures gives an error (#128488)
Duplicate of #128943, which I had accidentally closed when rebasing.
cc. `@jieyouxu` `@compiler-errors` `@nikomatsakis` `@traviscross` `@pnkfelix.`
Make `llvm::set_section` take a `&CStr`
There's no reason to convert the section name to an intermediate `String`, when the LLVM-C API wants a C string anyway.
Follow-up to #131876.
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.
Align boolean option descriptions in `configure.py`
Boolean options are currently printed as
```
Options
--enable-debug OR --disable-debug enables debugging environment; does not affect optimization of bootstrapped code
--enable-docs OR --disable-docs build standard library documentation
--enable-compiler-docs OR --disable-compiler-docs build compiler documentation
--enable-optimize-tests OR --disable-optimize-tests build tests with optimizations
--enable-verbose-tests OR --disable-verbose-tests enable verbose output when running tests
--enable-ccache OR --disable-ccache invoke gcc/clang via ccache to reuse object files between builds
--enable-sccache OR --disable-sccache invoke gcc/clang via sccache to reuse object files between builds
--enable-local-rust OR --disable-local-rust use an installed rustc rather than downloading a snapshot
--local-rust-root=VAL set prefix for local rust binary
--enable-local-rebuild OR --disable-local-rebuild assume local-rust matches the current version, for rebuilds; implies local-rust, and is implied if local-rust already matches the current version
```
as of #131117
imo, this is a little difficult to skim. This PR changes this to align the `OR`s and push the description onto a newline:
```
Options
--enable-debug OR --disable-debug
enables debugging environment; does not affect optimization of bootstrapped code
--enable-docs OR --disable-docs
build standard library documentation
--enable-compiler-docs OR --disable-compiler-docs
build compiler documentation
--enable-optimize-tests OR --disable-optimize-tests
build tests with optimizations
--enable-verbose-tests OR --disable-verbose-tests
enable verbose output when running tests
--enable-ccache OR --disable-ccache
invoke gcc/clang via ccache to reuse object files between builds
--enable-sccache OR --disable-sccache
invoke gcc/clang via sccache to reuse object files between builds
--enable-local-rust OR --disable-local-rust
use an installed rustc rather than downloading a snapshot
--local-rust-root=VAL set prefix for local rust binary
--enable-local-rebuild OR --disable-local-rebuild
assume local-rust matches the current version, for rebuilds; implies local-rust, and is implied if local-rust already matches the current version
```
compiler: Error on layout of enums with invalid reprs
Surprising no one, the ICEs with the same message have the same root cause.
Invalid reprs can reach layout computation for various reasons. For instance, the compiler may want to use its layout computations to discern if a combination of layout-affecting attributes results in a valid type to begin with by e.g. computing its size. When the input is bad, return an error reflecting that the answer to the question is not a useful one.
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?)
Fix missing rustfmt in msi installer #101993
# Context
- Fixed missing `rustfmt`, `clippy`, `miri` and `rust-analyzer` in msi installer
- Fixed missing `rustfmt` for apple darwin installer
- Closes#101993
r? `@jyn514`
- Please let me know if I should request from someone else instead. I divided the changes into 3 separate commits for the ease of review. The refactoring commit `fbdfd5c03c3c979bcf105ccdd05ff4ab9f37a763` is a bit more involved, but I think it helps in the long term for readability and to avoid bugs.
- I changed `build-manifest` to `build_manifest` in order to invoke it as a library. Not sure if this is gonna break any upstream processes. I checked `generate-manifest-list` and `generate-release` but didn't find any obvious reference
- Will push fixes for linting later
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
