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The linked issue has an accurate description of the situation,
drop the inaccurate comment.
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show suggestion to replace generic bounds with associated types in more cases
Moves the hint to replace generic parameters with associated type bounds from the "not all associated type bounds are specified"(`E0191`) to "to many generic type parameters provided"(`E0107`).
Since `E0191` is only emitted in places where all associated types must be specified (when creating `dyn` types), the suggesting is currently not shown for other generic type uses (such as in generic type bounds). With this change the suggesting is always emitted when the number of excess generic parameters matches the number of unbound associated types.
Main motivation for the change was a lack of useful suggesting when doing
```rust
fn foo<I: Iterator<usize>>(i: I) {}
```
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Update LLVM submodule
Merge upstream release/14.x branch.
Fixes #94762.
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Rollup of 5 pull requests
Successful merges:
- #96032 (Update books)
- #96136 (Reword clarification on lifetime for ptr->ref safety docs)
- #96143 (Fix snapshot --bless not working anymore in htmldocck)
- #96148 (Use revisions instead of nll compare mode for `/self/` ui tests)
- #96156 (Replace u8to64_le macro with u64::from_le_bytes)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Use revisions instead of nll compare mode for `/self/` ui tests
r? ``@jackh726``
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Fix snapshot --bless not working anymore in htmldocck
I broke it in https://github.com/rust-lang/rust/pull/95933
r? ```@GuillaumeGomez```
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Update books
## nomicon
1 commits in 11f1165e8a2f5840467e748c8108dc53c948ee9a..c7d8467ca9158da58ef295ae65dbf00a308752d9
2022-03-19 16:02:00 -0400 to 2022-04-06 14:26:54 +0900
- Change "writers" to "readers" for Deref. (rust-lang/nomicon#346)
## reference
7 commits in c97d14fa6fed0baa9255432b8a93cb70614f80e3..b5f6c2362baf932db9440fbfcb509b309237ee85
2022-03-19 18:18:10 -0700 to 2022-04-10 19:19:51 -0700
- Fix typo: `?` should be inside `<sup>` tags (rust-lang/reference#1190)
- Update aarch64 to use neon as fp (rust-lang/reference#1184)
- Boolean literal expressions (rust-lang/reference#1189)
- Document that unary negation of a signed integer literal cannot cause an overflow error (rust-lang/reference#1188)
- Document compatibility between declarative and procedural macro tokens (rust-lang/reference#1169)
- Document native library modifier syntax and the `whole-archive` modifier specifically (rust-lang/reference#1170)
- Numeric literal expressions and literal suffixes (rust-lang/reference#1177)
## book
8 commits in ea90bbaf53ba64ef4e2da9ac2352b298aec6bec8..765318b844569a642ceef7bf1adab9639cbf6af3
2022-03-28 21:59:34 -0400 to 2022-04-12 21:14:47 -0400
- Propagate nostarch edits to src
- Propagate updated test example code to nostarch snapshot
- Edits to nostarch edits
- edits from nostarch
- Fix error message for the example code
- update ch13-02 to reflect changes in rust-lang/book#2797
- Update to 1.59
- Edits to chapter 2 after tech review
## rust-by-example
4 commits in ec954f35eedf592cd173b21c05a7f80a65b61d8a..c2a98d9fc5d29c481d42052fbeccfde15ed03116
2022-03-22 11:09:06 -0300 to 2022-04-08 06:44:18 -0300
- Code highlight a variable (rust-lang/rust-by-example#1530)
- Add a comment to note that warnings may not be shown in a browser in the Variable Bindings section (rust-lang/rust-by-example#1529)
- Make all new types have UpperCamelCase names in code example in the Aliasing section (rust-lang/rust-by-example#1528)
- Replace `C` with C/C++ (rust-lang/rust-by-example#1527)
## rustc-dev-guide
6 commits in 155126b1d2e2cb01ddb1d7ba9489b90d7cd173ad..eeb5a83c15b6ae60df3e4f19207376b22c6fbc4c
2022-03-22 14:34:21 +0100 to 2022-04-11 23:29:48 +0900
- method-lookup.md improvements (rust-lang/rustc-dev-guide#1296)
- Consolidate crates.io convention section (rust-lang/rustc-dev-guide#1326)
- Update examples with 1.61.0-nightly (latest version) (rust-lang/rustc-dev-guide#1330)
- r-a: Use `python3 x.py` instead of `./x.py` (rust-lang/rustc-dev-guide#1335)
- Update miri.md: correct a minor typo (rust-lang/rustc-dev-guide#1334)
- Add example how lints can be feature gated
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Require all paths passed to `ShouldRun::paths` to exist on disk
This has two benefits:
1. There is a clearer mental model of how bootstrap works. Steps correspond to paths on disk unless it's strictly impossible for them to do so (e.g. dist components).
2. Bootstrap has better checks for internal consistency. This caught several issues:
- `src/sanitizers` doesn't exist; I changed it to just be a `sanitizers` alias.
- `src/tools/lld` doesn't exist; I removed it, since `lld` alone already works.
- `src/llvm` doesn't exist; removed it since `llvm` and `src/llvm-project` both work.
- `src/lldb_batchmode.py` doesn't exist, it was moved to `src/etc`.
- `install` was still using `src/librustc` instead of `compiler/rustc`.
- None of the tools in `dist` / `install` allowed using `src/tools/X` to build them. This might be intentional - I can change them to aliases if you like.
Builds on https://github.com/rust-lang/rust/pull/95901 and should not be merged before.
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Respect ranlib specified for target during LLVM build
The ranlib specified for the target was never actually transferred
into the builder configuration. In the dist-x86_64-linux build we
ended up using ranlib instead of llvm-ranlib.
Found this investigating a build failure in #94214.
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Make `x test --stage 2 compiler/rustc_XXX` faster to run
Previously, bootstrap unconditionally rebuilt the stage 2 compiler,
even if it had previously built stage 1. This changes it to reuse stage 1 if possible.
In particular, it no longer runs the following step:
```
Building stage1 compiler artifacts (x86_64-unknown-linux-gnu(x86_64-unknown-linux-gnu) -> x86_64-unknown-linux-gnu(x86_64-unknown-linux-gnu))
```
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Add codegen tests for additional cases where noop iterators get optimized away
Optimizations have improved over time and now LLVM manages to optimize more in-place-collect noop-iterators to O(1) functions. This updates the codegen test to match.
Many but not all cases reported in #79308 work now.
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Report undeclared lifetimes during late resolution.
First step in https://github.com/rust-lang/rust/pull/91557
We reuse the rib design of the current resolution framework. Specific `LifetimeRib` and `LifetimeRibKind` types are introduced. The most important variant is `LifetimeRibKind::Generics`, which happens each time we encounter something which may introduce generic lifetime parameters. It can be an item or a `for<...>` binder. The `LifetimeBinderKind` specifies how this rib behaves with respect to in-band lifetimes.
r? `@petrochenkov`
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Refactor HIR item-like traversal (part 1)
Issue #95004
- Create hir_crate_items query which traverses tcx.hir_crate(()).owners to return a hir::ModuleItems
- use tcx.hir_crate_items in tcx.hir().items() to return an iterator of hir::ItemId
- use tcx.hir_crate_items to introduce a tcx.hir().par_items(impl Fn(hir::ItemId)) to traverse all items in parallel;
Signed-off-by: Miguel Guarniz <mi9uel9@gmail.com>
cc `@cjgillot`
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Implement `core::ptr::Unique` on top of `NonNull`
Removes the use `rustc_layout_scalar_valid_range_start` and some `unsafe` blocks.
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Speed up Vec::clear().
Currently it just calls `truncate(0)`. `truncate()` is (a) not marked as
`#[inline]`, and (b) more general than needed for `clear()`.
This commit changes `clear()` to do the work itself. This modest change
was first proposed in rust-lang#74172, where the reviewer rejected it because
there was insufficient evidence that `Vec::clear()`'s performance
mattered enough to justify the change. Recent changes within rustc have
made `Vec::clear()` hot within `macro_parser.rs`, so the change is now
clearly worthwhile.
Although it doesn't show wins on CI perf runs, this seems to be because they
use PGO. But not all platforms currently use PGO. Also, local builds don't use
PGO, and `truncate` sometimes shows up in an over-represented fashion in local
profiles. So local profiling will be made easier by this change.
Note that this will also benefit `String::clear()`, because it just
calls `Vec::clear()`.
Finally, the commit removes the `vec-clear.rs` codegen test. It was
added in #52908. From before then until now, `Vec::clear()` just called
`Vec::truncate()` with a zero length. The body of Vec::truncate() has
changed a lot since then. Now that `Vec::clear()` is doing actual work
itself, and not just calling `Vec::truncate()`, it's not surprising that
its generated code includes a load and an icmp. I think it's reasonable
to remove this test.
r? `@m-ou-se`
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update Miri
Fixes https://github.com/rust-lang/rust/issues/96115
r? ``@rust-lang/miri``
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Strict provenance lint diagnostics improvements
Use `multipart_suggestion` instead of `span_suggestion` and getting a snippet for the expression. Also don't suggest unnecessary parenthesis in `lossy_provenance_casts`.
cc ``@estebank``
``@rustbot`` label A-diagnostics
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Make the debug output for `TargetSelection` less verbose
In particular, this makes the output of `x build -vv` easier to read.
Before:
```
c Sysroot { compiler: Compiler { stage: 0, host: TargetSelection { triple: "x86_64-unknown-linux-gnu", file: None } } }
```
After:
```
c Sysroot { compiler: Compiler { stage: 0, host: x86_64-unknown-linux-gnu } }
```
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htmldocck: Compare HTML tree instead of plain text html
This PR improves `htmldocck` by comparing HTML trees instead of plain text html in the case of doing a ```@snapshot``` test.
This fix the [CI issue](https://github.com/rust-lang-ci/rust/runs/5964305020?check_suite_focus=true) encounter in https://github.com/rust-lang/rust/pull/95813 where for some unknown reason one of the attributes is not always at the same place.
The code is largely based on https://github.com/formencode/formencode/blob/3a1ba9de2fdd494dd945510a4568a3afeddb0b2e/formencode/doctest_xml_compare.py#L72-L120 which is behind MIT License. The comparison function is straightforward except for the `text_compare` function which does some weird stuff that we may want to simply reduce to a plain old comparison.
r? ``@GuillaumeGomez``
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Stablize `const_extern_fn` for "Rust" and "C"
All other ABIs are left unstable for now.
cc #64926
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Rollup of 7 pull requests
Successful merges:
- #94985 (Parse inner attributes on inline const block)
- #95006 (Reject `#[thread_local]` attribute on non-static items)
- #95426 (Include Refs in Valtree Creation)
- #95908 (Inline `shallow_resolve_ty` into `ShallowResolver`)
- #96058 (separate flock implementations into separate modules)
- #96088 (Update mdbook)
- #96118 (rustdoc: Rename `def_id` into `item_id` when the type is `ItemId` for readability)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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This has two benefits:
1. There is a clearer mental model of how bootstrap works. Steps correspond to paths on disk unless it's strictly impossible for them to do so (e.g. dist components).
2. Bootstrap has better checks for internal consistency. This caught several issues:
- `src/sanitizers` doesn't exist; I changed it to just be a `sanitizers` alias.
- `src/tools/lld` doesn't exist; I removed it, since `lld` alone already works.
- `src/llvm` doesn't exist; removed it since `llvm` and `src/llvm-project` both work.
- `src/lldb_batchmode.py` doesn't exist, it was moved to `src/etc`.
- `install` was still using `src/librustc` instead of `compiler/rustc`.
- None of the tools in `dist` / `install` allowed using `src/tools/X` to build them. This might be intentional - I can change them to aliases if you like.
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rustdoc: Rename `def_id` into `item_id` when the type is `ItemId` for readability
As `@notriddle` mentioned in https://github.com/rust-lang/rust/pull/96091, the field name is inaccurate. This PR fixes it by renaming it accordingly to its real type.
r? `@notriddle`
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Update mdbook
This just brings in a few small fixes, particularly a rendering fix for chapter names with markdown in them (like the https://doc.rust-lang.org/nightly/rustc/platform-support/kmc-solid.html page). There's also a minor fix for the search index for duplicate headings.
Changelog: https://github.com/rust-lang/mdBook/blob/master/CHANGELOG.md#mdbook-0418
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Reject `#[thread_local]` attribute on non-static items
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Parse inner attributes on inline const block
According to https://github.com/rust-lang/rust/pull/84414#issuecomment-826150936, inner attributes are intended to be supported *"in all containers for statements (or some subset of statements)"*.
This PR adds inner attribute parsing and pretty-printing for inline const blocks (https://github.com/rust-lang/rust/issues/76001), which contain statements just like an unsafe block or a loop body.
```rust
let _ = const {
#![allow(...)]
let x = ();
x
};
```
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Fix `x test --doc --stage 0 library/std`
I managed to break this in https://github.com/rust-lang/rust/pull/95449.
I am not quite sure why this is the correct fix, but it doesn't break `doc --stage 0`
and is strictly closer to the previous behavior.
Previously, rustdoc would error with strange issues because of the mismatched sysroot:
```
error[E0460]: found possibly newer version of crate `std` which `rustc_span` depends on
--> /home/jnelson/rust-lang/rust/compiler/rustc_lint_defs/src/lib.rs:14:5
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14 | use rustc_span::{sym, symbol::Ident, Span, Symbol};
| ^^^^^^^^^^
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= note: perhaps that crate needs to be recompiled?
= note: the following crate versions were found:
crate `std`: /home/jnelson/rust-lang/rust/build/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-ff9290e971253a38.rlib
crate `std`: /home/jnelson/rust-lang/rust/build/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-ff9290e971253a38.so
crate `rustc_span`: /home/jnelson/rust-lang/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/librustc_span-ed11dce30c1766f9.rlib
```
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clarify doc(cfg) wording
The current "This is supported" wording implies that it's possible to
still use the item on other configurations, but in an unsupported way.
Changing this to "Available" removes this ambiguity.
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:arrow_up: rust-analyzer
r? ``@ghost``
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Gumichocopengin8:feature/update-github-action-version, r=pietroalbini
Update GitHub Actions actions/checkout Version v2 -> v3
Update `actions/checkout@v2` to `actions/checkout@v3` because of Node12 will be out of life after Aril 30, 2022 [[Reference](https://nodejs.org/en/about/releases/)].
`actions/xxxx@v3` use Node16 whose support lasts until April 30, 2024.
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couple of clippy::perf fixes
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resolve: Create dummy bindings for all unresolved imports
Apparently such bindings weren't previously created for all unresolved imports, causing issues like https://github.com/rust-lang/rust/issues/95879.
In this PR I'm trying to create such dummy bindings in a more centralized way by calling `import_dummy_binding` once for all imports in `finalize_imports`.
Fixes https://github.com/rust-lang/rust/issues/95879.
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Rollup of 9 pull requests
Successful merges:
- #93969 (Only add codegen backend to dep info if -Zbinary-dep-depinfo is used)
- #94605 (Add missing links in platform support docs)
- #95372 (make unaligned_references lint deny-by-default)
- #95859 (Improve diagnostics for unterminated nested block comment)
- #95961 (implement SIMD gather/scatter via vector getelementptr)
- #96004 (Consider lifetimes when comparing types for equality in MIR validator)
- #96050 (Remove some now-dead code that was only relevant before deaggregation.)
- #96070 ([test] Add test cases for untested functions for BTreeMap)
- #96099 (MaybeUninit array cleanup)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Use `multipart_suggestion` instead of getting a snippet.
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Use `multipart_suggestion` and don't suggested unnecessary parenthesis.
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