Add incomplete feature gate for inherent associate types.
Mentored by ``````@oli-obk``````
So far the only change is that instead of giving an automatic error, the following code compiles:
```rust
struct Foo;
impl Foo {
type Bar = isize;
}
```
The backend work to make it actually usable isn't there yet. In particular, this:
```rust
let x : Foo::Bar;
```
will give you:
```sh
error[E0223]: ambiguous associated type
--> /$RUSTC_DIR/src/test/ui/assoc-inherent.rs:15:13
|
LL | let x : Foo::Bar;
| ^^^^^^^^ help: use fully-qualified syntax: `<Foo as Trait>::Bar`
```
Add option to enable MIR inlining independently of mir-opt-level
Add `-Zinline-mir` option that enables MIR inlining independently of the
current MIR opt level. The primary use-case is enabling MIR inlining on the
default MIR opt level.
Turn inlining thresholds into optional values to make it possible to configure
different defaults depending on the current mir-opt-level (although thresholds
are yet to be used in such a manner).
Convert primitives in the standard library to intra-doc links
Blocked on https://github.com/rust-lang/rust/pull/80181. I forgot that this needs to wait for the beta bump so the standard library can be documented with `doc --stage 0`.
Notably I didn't convert `core::slice` because it's like 50 links and I got scared 😨
Remove an old FIXME comment and inline attribute
Apparently #35870 caused a problem in this code (which originally
returned an impl trait) and `#[inline]` was added as a workaround, in
ade79d7609.
The issue is now fixed and the comment and `#[inline]` can now be
removed.
Rollup of 7 pull requests
Successful merges:
- #80734 (check that first arg to `panic!()` in const is `&str`)
- #81932 (Always compile rustdoc with debug logging enabled when `download-rustc` is set)
- #82018 (Remove the dummy cache in `DocContext`; delete RenderInfo)
- #82598 (Check stability and feature attributes in rustdoc)
- #82655 (Highlight identifier span instead of whole pattern span in `unused` lint)
- #82662 (Warn about unknown doc attributes)
- #82676 (Change twice used large const table to static)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
The rustdoc team does not currently use the `I-nominated` label, unlike
the libs and compiler teams (and maybe others). One reason for this is
that the other teams discuss their nominated issues in meetings, while
rustdoc is an async-only team.
However, it might be helpful to start using the `I-nominated` label for
rustdoc. The team currently uses a `cc @rust-lang/rustdoc` ping as the
equivalent, but it's easier to track issues when they use `I-nominated`.
Also we'd be more consistent with the other teams' procedures.
Since rustdoc doesn't have meetings, I propose we instead use the
triagebot notify Zulip functionality to create a topic in `#rustdoc` on
Zulip and ping the team. So it would look a bit like the procedure for
WG-prioritization when an issue acquires the `I-prioritize` label.
Note that the FIXME was removed because this can't be fixed,
`register_renamed` calls LintId::of and there's no LintId for rustdoc
lints when rustc is running.
- Move MISSING_CRATE_LEVEL_DOCS to rustdoc directly
- Update documentation
This also takes the opportunity to make the `no-crate-level-doc-lint`
test more specific.
- Use `register_renamed` when rustdoc is running so the lint will still
be active and use a structured suggestion
- Test the behavior for rustc, not just for rustdoc (because it differs)
- Rename `broken_intra_doc_links` to `rustdoc::broken_intra_doc_links`
- Ensure that the old lint names still work and give deprecation errors
- Register lints even when running doctests
Otherwise, all `rustdoc::` lints would be ignored.
- Register all existing lints as removed
This unfortunately doesn't work with `register_renamed` because tool
lints have not yet been registered when rustc is running. For similar
reasons, `check_backwards_compat` doesn't work either. Call
`register_removed` directly instead.
- Fix fallout
+ Rustdoc lints for compiler/
+ Rustdoc lints for library/
Note that this does *not* suggest `rustdoc::broken_intra_doc_links` for
`rustdoc::intra_doc_link_resolution_failure`, since there was no time
when the latter was valid.
Change twice used large const table to static
This table is used twice in core::num::dec2flt::algorithm::power_of_ten. According to the semantics of const, a separate huge definition of the table is inlined at both places.
5233edcf1c/library/core/src/num/dec2flt/algorithm.rs (L16-L22)
Theoretically this gets cleaned up by optimization passes, but in practice I am experiencing a miscompile from LTO on this code. Making the table a static, which would only be defined a single time and not require attention from LTO, eliminates the miscompile and seems semantically more appropriate anyway. A separate bug report on the LTO bug is forthcoming.
Original addition of `const` is from #27307.
Highlight identifier span instead of whole pattern span in `unused` lint
Fixes#81314
This pretty much just changes the span highlighted in the lint from `pat_sp` to `ident.span`. There's however an exception, which is in patterns with shorthands like `Point { y, ref mut x }`, where a suggestion to change just `x` would be invalid; in those cases I had to keep the pattern span. Another option would be suggesting something like `Point { y, x: ref mut _x }`.
I also added a new test since there weren't any test that checked the `unused` lint with optional patterns.
Remove the dummy cache in `DocContext`; delete RenderInfo
The same information is available everywhere; the only reason the dummy
cache was needed is because it was previously stored in three different
places. This consolidates the info a bit so the cache in `DocContext` is
used throughout. As a bonus, it also completely removes `RenderInfo`.
- Return a `Cache` from `run_global_ctxt`, not `RenderInfo`
- Remove the unused `render_info` from `run_renderer`
- Remove RenderInfo altogether
Helps with https://github.com/rust-lang/rust/pull/82014. The next step is to move the `populate()` call before the `collect_intra_doc_links` pass, which currently breaks because a) lots of the cache is populated in early passes, and b) intra_doc_links itself sets some info with `register_res`. I'm working on separate PR for that to avoid making too many big changes at once.
r? `@GuillaumeGomez`
Always compile rustdoc with debug logging enabled when `download-rustc` is set
Previously, logging at DEBUG or below would always be silenced, because
rustc compiles tracing with the `static_max_level_info` feature. That
makes sense for release artifacts, but not for developing rustdoc.
Instead, this compiles two different versions of tracing: one in the
release artifacts, distributed in the sysroot, and a new version
compiled by rustdoc. Since `rustc_driver` is always linked to the
version of sysroot, this copy/pastes `init_env_logging` into rustdoc.
To avoid compiling an unnecessary version of tracing when
`download-rustc` isn't set, this adds a new `using-ci-artifacts`
feature for rustdoc and passes that feature in bootstrap.
Addresses https://github.com/rust-lang/rust/issues/81930. This builds on https://github.com/rust-lang/rust/pull/79540.
r? `@Mark-Simulacrum`
musl-toolchain.sh is called with REPLACE_CC=1, so it will replace
the host compiler and the subsequent cmake build will fail because
it cannot find the openssl headers.
Move the cmake build earlier, so it happens before the compiler
is replaced.
The definition of this struct changes in LLVM 12 due to the addition
of branch coverage support. To avoid future mismatches, declare our
own struct and then convert between them.
Python 2 is needed for Clang 10, Python 3 for LLVM 12.
The Python 2 dependency could be removed by upgrading to Clang 11,
but that causes linker errors of unclear origin.
This table is used twice in core::num::dec2flt::algorithm::power_of_ten.
According to the semantics of const, a separate huge definition of the
table is inlined at both places.
fn power_of_ten(e: i16) -> Fp {
assert!(e >= table::MIN_E);
let i = e - table::MIN_E;
let sig = table::POWERS.0[i as usize];
let exp = table::POWERS.1[i as usize];
Fp { f: sig, e: exp }
}
Theoretically this gets cleaned up by optimization passes, but in
practice I am experiencing a miscompile from LTO on this code. Making
the table a static, which would only be defined a single time and not
require attention from LTO, eliminates the miscompile and seems
semantically more appropriate anyway. A separate bug report on the LTO
bug is forthcoming.
Whether for Rust's own `target_os`, LLVM's triples, or GNU config's, the
OS-related have fields have been for code running *on* that OS, not code
that is *part* of the OS.
The difference is huge, as syscall interfaces are nothing like
freestanding interfaces. Kernels are (hypervisors and other more exotic
situations aside) freestanding programs that use the interfaces provided
by the hardware. It's *those* interfaces, the ones external to the
program being built and its software dependencies, that are the content
of the target.
For the Linux Kernel in particular, `target_env: "gnu"` is removed for
the same reason: that `-gnu` refers to glibc or GNU/linux, neither of
which applies to the kernel itself.
Relates to #74247
Thanks @ojeda for catching some things.
Clarify that SyncOnceCell::set blocks.
Reading the discussion of this feature, I gained the mistaken impression that neither `set` nor `get` blocked, and thus calling `get` immediately after `set` was not guaranteed to succeed. It turns out that `set` *does* block, guaranteeing that the cell contains a value once `set` returns. This change updates the documentation to state that explicitly.
Happy to adjust the wording as desired.
Apply lint restrictions from renamed lints
Previously, if you denied the old name of a renamed lint, it would warn
about using the new name, but otherwise do nothing. Now, it will behave
the same as if you'd used the new name.
Fixes https://github.com/rust-lang/rust/issues/82615.
r? `@ehuss`
