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My type ascription
Oh rip it out
Ah
If you think we live too much then
You can sacrifice diagnostics
Don't mix your garbage
Into my syntax
So many weird hacks keep diagnostics alive
Yet I don't even step outside
So many bad diagnostics keep tyasc alive
Yet tyasc doesn't even bother to survive!
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Close parentheses for `offset_of` in AST pretty printing
HIR pretty printing already handles it correctly.
This will conflict with #110694 but it seems like that PR is gonna take bit more time.
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Test precise capture with a multi-variant enum and exhaustive patterns
Add test checking that it is possible to capture fields of a multi-variant enum, when remaining variants are visibly uninhabited (under the `exhaustive_patterns` feature gate).
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Remove wrong assertion in match checking.
This assertions is completely misguided, introduced by https://github.com/rust-lang/rust/pull/108504. The responsible PR is on beta, nominating for backport.
Instead of checking that this is not a `&&`, it would make sense to check that neither arms of that `&&` is a `let`. This seems like a lot of code for unclear benefit.
r? `@saethlin`
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Tweak await span to not contain dot
Fixes a discrepancy between method calls and await expressions where the latter are desugared to have a span that *contains* the dot (i.e. `.await`) but method call identifiers don't contain the dot. This leads to weird suggestions suggestions in borrowck -- see linked issue.
Fixes #110761
This mostly touches a bunch of tests to tighten their `await` span.
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HIR pretty printing already handles it correctly.
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Add test checking that it is possible to capture fields of a
multi-variant enum, when remaining variants are visibly uninhabited
(under the `exhaustive_patterns` feature gate).
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Make ConstProp some tests unit.
Part of the effort to tidy up mir-opt test suite.
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rustdoc: catch and don't blow up on impl Trait cycles
Fixes #110629
An odd feature of Rust is that `Foo` is invalid, but `Bar` is okay:
type Foo<'a, 'b> = Box<dyn PartialEq<Foo<'a, 'b>>>;
type Bar<'a, 'b> = impl PartialEq<Bar<'a, 'b>>;
To get it right, track every time rustdoc descends into a type alias, so if it shows up twice, it can be write the path instead of infinitely expanding it.
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Don't accidentally ignore all output in `tests/run-make/coverage-reports` diffs
Because the literal pipe `|` character was not escaped, these regexes ended up accidentally ignoring every line in the coverage report output, so the tests would not fail even if the output was wrong.
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An odd feature of Rust is that `Foo` is invalid, but `Bar` is okay:
type Foo<'a, 'b> = Box<dyn PartialEq<Foo<'a, 'b>>>;
type Bar<'a, 'b> = impl PartialEq<Bar<'a, 'b>>;
To get it right, track every time rustdoc descends into a type alias,
so if it shows up twice, it can be write the path instead of
infinitely expanding it.
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Do not resolve anonymous lifetimes in consts to be static.
Fixes https://github.com/rust-lang/rust/issues/110931
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rustdoc: Get `repr` information through `AdtDef` for foreign items
As suggested by `@notriddle,` this approach works too. The only downside is that the display of the original attribute isn't kept, but I think it's an acceptable downside.
r? `@notriddle`
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Move most rustdoc-ui tests into subdirectories
This makes it easier to know where to add a new test, and makes the top-level directory less overwhelming.
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r=compiler-errors
improve error notes for packed struct reference diagnostic
Addresses #110199
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r=Mark-Simulacrum
Add test for warning-free builds of `core` under `no_global_oom_handling`
`tests/run-make/alloc-no-oom-handling` tests that `alloc` under `no_global_oom_handling` builds and is warning-free.
Do the same for `core` to prevent issues such as [1].
Link: https://github.com/rust-lang/rust/pull/110649 [1]
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Fix Unreadable non-UTF-8 output on localized MSVC
Fixes #35785 by converting non UTF-8 linker output to Unicode using the OEM code page.
Before:
```text
= note: Non-UTF-8 output: LINK : fatal error LNK1181: cannot open input file \'m\x84rchenhaft.obj\'\r\n
```
After:
```text
= note: LINK : fatal error LNK1181: cannot open input file 'märchenhaft.obj'
```
The difference is more dramatic if using a non-ascii language pack for Windows.
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rustdoc: fix weird margins between Deref impl items
## Before
## After
## Description
In the old setup, if the dereffed-to item has multiple impl blocks, each one gets its own `div.impl-items` in the section, but there are no headers separating them. Since the last method in a `div.impl-items` has no bottom margin, and there are no margins between these divs, there is no margin between the last method of one impl and the first method of the following impl.
This patch fixes it by simplifying the HTML. Each Deref block gets exactly one `div.impl-items`, no matter how many impl blocks it actually has.
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r=Mark-Simulacrum
Update tests for libtest `--format json`
This PR makes the test work on beta and stable, and adds a test ensuring the option is not available on beta and stable. Backported these commits from https://github.com/rust-lang/rust/pull/110414.
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r=GuillaumeGomez,jyn514,notriddle
rustdoc: Add a new lint for broken inline code
This patch adds `rustdoc::unescaped_backticks`, a new rustdoc lint that will detect broken inline code nodes.
The lint woks by finding stray backticks and with some heuristics tries to guess where the second backtick might be missing.
Here is how it looks:
```rust
#![warn(rustdoc::unescaped_backticks)]
/// `add(a, b) is the same as `add(b, a)`.
pub fn add(a: i32, b: i32) -> i32 { a + b }
```
```text
warning: unescaped backtick
--> src/lib.rs:3:41
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3 | /// `add(a, b) is the same as `add(b, a)`.
| ^
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help: a previous inline code might be longer than expected
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3 | /// `add(a, b)` is the same as `add(b, a)`.
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help: if you meant to use a literal backtick, escape it
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3 | /// `add(a, b) is the same as `add(b, a)\`.
| +
```
If we can't get proper spans, for example if the doc comment comes from a macro expansion, we print the suggestion in help messages instead. Here's a [real-world example](https://docs.rs/tracing-subscriber/0.3.17/tracing_subscriber/layer/trait.Filter.html#method.max_level_hint):
```text
warning: unescaped backtick
--> /tracing-subscriber-0.3.17/src/layer/mod.rs:1400:9
|
1400 | / /// Returns an optional hint of the highest [verbosity level][level] that
1401 | | /// this `Filter` will enable.
1402 | | ///
1403 | | /// If this method returns a [`LevelFilter`], it will be used as a hint to
... |
1427 | | /// [`Interest`]: tracing_core::subscriber::Interest
1428 | | /// [rebuild]: tracing_core::callsite::rebuild_interest_cache
| |_____________________________________________________________________^
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= help: a previous inline code might be longer than expected
change: Therefore, if the `Filter will change the value returned by this
to this: Therefore, if the `Filter` will change the value returned by this
= help: if you meant to use a literal backtick, escape it
change: [`rebuild_interest_cache`][rebuild] is called after the value of the max
to this: [`rebuild_interest_cache\`][rebuild] is called after the value of the max
```
You can find more examples [here](https://gist.github.com/lukas-code/7678ddf5c608aee97b3a669de80d3465).
A limitation of the current implementation is, that it cannot suggest removing misplaced backticks, for example [here](https://docs.rs/tikv-jemalloc-sys/0.5.3+5.3.0-patched/tikv_jemalloc_sys/fn.mallctl.html).
The lint is allowed by default ~~and nightly-only~~ for now, ~~but without a feature gate. This is similar to how `rustdoc::invalid_html_tags` and `rustdoc::bare_urls` were handled.~~
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Improve niche placement by trying two strategies and picking the better result
Fixes #104807
Fixes #105371
Determining which sort order is better requires calculating the struct size (so we can calculate the niche offset). But that in turn depends on the field order, so happens after sorting. So the simple way to solve that is to run the whole thing twice and pick the better result.
1st commit is just code motion, the meat is in the later ones.
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Don't duplicate anonymous lifetimes for async fn in traits
`record_lifetime_params_for_async` needs to be called outside of the scope of the function, or else it'll end up collecting anonymous lifetimes twice (those on the function and those within the `AnonymousCreateParameter` rib). This matches how `record_lifetime_params_for_async` is being used for functions with bodies below.
This fixes (partially) #110963 when the lifetimes are late-bound, but does not do so when the lifetimes are early-bound (as seen from the known-bug that I added).
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Make drop_flags an IndexVec.
Fixes https://github.com/rust-lang/rust/issues/91943
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Clear response values for overflow in new solver
When we have an overflow, return a trivial query response. This fixes an ICE with the code described in #110544:
```rust
trait Trait {}
struct W<T>(T);
impl<T, U> Trait for W<(W<T>, W<U>)>
where
W<T>: Trait,
W<U>: Trait,
{}
fn impls<T: Trait>() {}
fn main() {
impls::<W<_>>()
}
```
Where, while proving `W<?0>: Trait`, we overflow but still apply the query response of `?0 = (W<?1>, W<?2>)`. Then while re-processing the query to validate that our evaluation result was stable, we get a different query response that looks like `?1 = (W<?3>, W<?4>), ?2 = (W<?5>, W<?6>)`, and so we trigger the ICE.
Also, by returning a trivial query response we also avoid the infinite-loop/OOM behavior of the old solver.
r? ``@lcnr``
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[master] Bump stage0
r? `@Mark-Simulacrum`
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Rollup of 8 pull requests
Successful merges:
- #110877 (Provide better type hints when a type doesn't support a binary operator)
- #110917 (only error combining +whole-archive and +bundle for rlibs)
- #110921 (Use `NonNull::new_unchecked` and `NonNull::len` in `rustc_arena`.)
- #110927 (Encoder/decoder cleanups)
- #110944 (share BinOp::Offset between CTFE and Miri)
- #110948 (run-make test: using single quotes to not trigger the shell)
- #110957 (Fix an ICE in conflict error diagnostics)
- #110960 (fix false negative for `unused_mut`)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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For start-biased layout we want to avoid overpromoting so that
the niche doesn't get pushed back.
For end-biased layout we want to avoid promoting fields that
may contain one of the niches of interest.
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fix false negative for `unused_mut`
fixes https://github.com/rust-lang/rust/issues/110849
We want to avoid double diagnostics for code like this, but only if an error actually occurs:
```rust
fn main() {
let mut x: (i32, i32);
x.0 = 1;
}
```
The first commit fixes the lint and the second one removes all the unused `mut`s it found.
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r=cjgillot
Fix an ICE in conflict error diagnostics
Fixes #110929
r? ``@cjgillot``
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run-make test: using single quotes to not trigger the shell
This test got added in #110801.
I'm no expert on Makefiles, but IIUC this command is passed to the shell, which usually tries to execute commands specified in between backticks in double-quoted strings.
Using single quotes should fix this, I think. (Note: Waiting for CI to test this, since I only have a web browser available right now).
r? ``@jyn514``
cc ``@WaffleLapkin``
Since this is breaking our build bot, even if it is not directly LLVM related: ``@rustbot`` label: +llvm-main
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Provide better type hints when a type doesn't support a binary operator
For example, when checking whether `vec![A] == vec![A]` holds, we first evaluate the LHS's ty, then probe for any `PartialEq` implementations for that. If none is found, we report an error by evaluating `Vec<A>: PartialEq<?0>` for fulfillment errors, but the RHS is not yet evaluated and remains an inference variable `?0`!
To fix this, we evaluate the RHS and equate it to that RHS infer var `?0`, so that we are able to provide more detailed fulfillment errors for why `Vec<A>: PartialEq<Vec<A>>` doesn't hold (namely, the nested obligation `A: PartialEq<A>` doesn't hold).
Fixes #95285
Fixes #110867
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rustdoc: Fix missing `repr` attribute in doc(inline) on foreign items
Fixes https://github.com/rust-lang/rust/issues/110698.
r? `@notriddle`
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In the old setup, if the dereffed-to item has multiple impl blocks,
each one gets its own `div.impl-items` in the section, but there
are no headers separating them. Since the last method in a
`div.impl-items` has no bottom margin, and there are no margins
between these divs, there is no margin between the last method
of one impl and the first method of the following impl.
This patch fixes it by simplifying the HTML. Each Deref block gets
exactly one `div.impl-items`, no matter how many impl blocks it
actually has.
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