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Add diagnostic for calling a function with the same name with unresolved Macro
Fixes #103112
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Move some tests to more reasonable places
r? `@petrochenkov`
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resolve: Revert "Set effective visibilities for imports more precisely"
In theory the change was correct, but in practice the use of import items in HIR is limited and hacky, and it expects that (effective) visibilities for all (up to) 3 IDs of the import are set to the value reflecting (effective) visibility of the whole syntactic `use` item rather than its individual components.
Fixes https://github.com/rust-lang/rust/issues/102352
r? `@oli-obk`
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Suggest let for assignment, and some code refactor
Fixes #101880
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Recover when unclosed char literal is parsed as a lifetime in some positions
Fixes #101278
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Delay ambiguity span bug in normalize query iff not rustdoc
Oli and I decided that the compiler debt of adding another usage of `tcx.sess.opts.actually_rustdoc` is fine, because we don't really want to add more complexity to the normalize query, and moving rustdoc to use fulfill normalization (`fully_normalize`, i.e. not use the normalize query) is unnecessary overhead given that it's skipping binders and stuff.
r? oli-obk
Fixes #102827
Fixes #103181
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Handle return-position `impl Trait` in traits properly in `register_hidden_type`
The bounds that we get by calling `bound_explicit_item_bounds` from an RPITIT have projections, not opaques, but when we're *registering* an opaque, we want to treat it like an opaque.
Coincidentally fixes #102688 as well, which makes sense, since that was failing because we were inferring an opaque type to be equal to itself (opaque cycle error => "cannot resolve opaque type").
Fixes #103352
r? ```@oli-obk```
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Escape string literals when fixing overlong char literal
Fixes #103323
````@rustbot```` label +A-diagnostics +A-suggestion-diagnostics
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Do not suggest trivially false const predicates
Pass through constness to `predicate_can_apply` and don't suggest other impls if it's satisfied but not const.
Fixes #103267
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Rust's niche handling allows for wrapping valid ranges with end < start;
for instance, a valid range with start=43 and end=41 means a niche of
42. Most places in the compiler handle this correctly, but
ty_find_init_error assumed that `lo > 0` means the type cannot contain a
zero.
Fix it to handle wrapping ranges.
Add a test to cover this case.
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r=fee1-dead
Allow semicolon after closure within parentheses in macros
#88546 added some parsing logic that if we're parsing a closure, and we're within parentheses, and a semicolon follows, then we must be parsing something erroneous like: `f(|| a; b)`, so it replaces the closure body with an error expression. However, it's valid to parse those tokens if we're within a macro, as in #103222.
This is a bit unsatisfying fix. Is there a more robust way of checking that we're within a macro?
I would also be open to removing this "_It is likely that the closure body is a block but where the braces have been removed_" check altogether at the expense of more verbose errors, since it seems very suspicious in the first place...
Fixes #103222.
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stop using `ty::UnevaluatedConst` directly
best reviewed commit by commit.
simplifies #99798 because we now don't have to expand `ty::UnevaluatedConst` to `ty::Const`.
I also remember some other places where using `ty::UnevaluatedConst` directly was annoying and caused issues, though I don't quite remember what they were rn '^^
r? `@oli-obk` cc `@JulianKnodt`
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macro
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The latest version of `rental` (v0.5.6) contains a fix that allows it to
compile without relying on the pretty-print back-compat hack.
Hopefully, there are no longer any crates relying on the affected
versions of the (much less popular) `procedural-masquerade` crate. This
should allow us to target the pretty-print back-compat hack specifically
to older versions of `rental`, and specifically mention upgrading to
`rental` v0.5.6 in the lint message.
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Rollup of 9 pull requests
Successful merges:
- #102635 (make `order_dependent_trait_objects` show up in future-breakage reports)
- #103335 (Replaced wrong test with the correct mcve)
- #103339 (Fix some typos)
- #103340 (WinConsole::new is not actually fallible)
- #103341 (Add test for issue 97607)
- #103351 (Require Drop impls to have the same constness on its bounds as the bounds on the struct have)
- #103359 (Remove incorrect comment in `Vec::drain`)
- #103364 (rustdoc: clean up rustdoc-toggle CSS)
- #103370 (rustdoc: remove unused CSS `.out-of-band { font-weight: normal }`)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Require Drop impls to have the same constness on its bounds as the bounds on the struct have
r? ``@fee1-dead``
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Add test for issue 97607
Fixes #97607
r? ``@compiler-errors``
Not sure which UI test dir to put this under, kindly let me know of a better dir if necessary and I will change it. Thanks.
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Fix some typos
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Replaced wrong test with the correct mcve
Closes #89008.
The old test was wrong and the compiler was [correctly raising an error](https://github.com/rust-lang/rust/issues/89008#issuecomment-1285128060). The bug in the issue was resolved at some point but due to the wrong test the issue was never closed.
This pr replaces that test with the correct MCVE (made by ``@jackh726).``
The error raised by the bug changed between when the bug was posted (2021-09-08) and when the MCVE [was posted](https://github.com/rust-lang/rust/issues/89008#issuecomment-950110735) (2021-10-23).
I ran them both through `nightly-2021-09-08` and they produce identical error messages. They also produce identical but different from before error messages when ran through `nightly-2021-10-23`.
<details>
<summary>Error message with <code>nightly-2021-09-08</code></summary>
The code with the original bug report:
```
error[E0277]: the size for values of type `Repr` cannot be known at compilation time
--> src/main.rs:23:43
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23 | fn line_stream<'a, Repr>(&'a self) -> Self::LineStreamFut<'a, Repr> {
| ---- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
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| this type parameter needs to be `std::marker::Sized`
For more information about this error, try `rustc --explain E0277`.
error: could not compile `test-234234` due to previous error
```
MVCE:
```
error[E0277]: the size for values of type `Repr` cannot be known at compilation time
--> src/main.rs:30:43
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30 | fn line_stream<'a, Repr>(&'a self) -> Self::LineStreamFut<'a, Repr> {
| ---- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
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| this type parameter needs to be `std::marker::Sized`
For more information about this error, try `rustc --explain E0277`.
error: could not compile `test-234234` due to previous error
```
</details>
<details>
<summary>Error message with <code>nightly-2021-10-23</code></summary>
The code with the original bug report:
```
error[E0271]: type mismatch resolving `<impl futures::Future as futures::Future>::Output == impl futures::Stream`
--> src/main.rs:23:43
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19 | type LineStream<'a, Repr> = impl Stream<Item = Repr>;
| ------------------------ the expected opaque type
...
23 | fn line_stream<'a, Repr>(&'a self) -> Self::LineStreamFut<'a, Repr> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected opaque type, found struct `futures::stream::Empty`
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= note: expected opaque type `impl futures::Stream`
found struct `futures::stream::Empty<_>`
error: could not find defining uses
--> src/main.rs:19:33
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19 | type LineStream<'a, Repr> = impl Stream<Item = Repr>;
| ^^^^^^^^^^^^^^^^^^^^^^^^
For more information about this error, try `rustc --explain E0271`.
error: could not compile `test-234234` due to 2 previous errors
```
MCVE:
```
error[E0271]: type mismatch resolving `<impl Future as Future>::Output == impl Stream`
--> src/main.rs:30:43
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28 | type LineStream<'a, Repr> = impl Stream<Item = Repr>;
| ------------------------ the expected opaque type
29 | type LineStreamFut<'a, Repr> = impl Future<Output = Self::LineStream<'a, Repr>>;
30 | fn line_stream<'a, Repr>(&'a self) -> Self::LineStreamFut<'a, Repr> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected opaque type, found struct `Empty`
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= note: expected opaque type `impl Stream`
found struct `Empty<_>`
error: could not find defining uses
--> src/main.rs:28:33
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28 | type LineStream<'a, Repr> = impl Stream<Item = Repr>;
| ^^^^^^^^^^^^^^^^^^^^^^^^
For more information about this error, try `rustc --explain E0271`.
error: could not compile `test-234234` due to 2 previous errors
```
</details>
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make `order_dependent_trait_objects` show up in future-breakage reports
tried to change it to a hard error in #102474 but breaking the more than 1000 dependents of `traitobject` doesn't feel great :sweat_smile:
This lint has existed since more than 3 years now and the way this is currently implemented is buggy and will break with #102472. imo we should upgrade it to also report for dependencies and maybe also backport this to beta. Then after maybe 2-3 stable versions I would like to finally convert this lint to a hard error.
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Add default trait implementations for "c-unwind" ABI function pointers
Following up on #92964, only add default trait implementations for the `c-unwind` family of function pointers. The previous attempt in #92964 added trait implementations for many more ABIs and ran into concerns regarding the increase in size of the libcore rlib.
An attempt to abstract away function pointer types behind a unified trait to reduce the duplication of trait impls is being discussed in #99531 but this change looks to be blocked on a lang MCP.
Following `@RalfJung's` suggestion in https://github.com/rust-lang/rust/pull/99531#issuecomment-1233440142, this commit is another cut at #92964 but it _only_ adds the impls for `extern "C-unwind" fn` and `unsafe extern "C-unwind" fn`.
I am interested in landing this patch to unblock the stabilization of the `c_unwind` feature.
RFC: https://github.com/rust-lang/rfcs/pull/2945
Tracking Issue: https://github.com/rust-lang/rust/issues/74990
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Change process spawning to inherit the parent's signal mask by default
Previously, the signal mask was always reset when a child process is
started. This breaks tools like `nohup` which expect `SIGHUP` to be
blocked for all transitive processes.
With this change, the default behavior changes to inherit the signal mask.
This also changes the signal disposition for `SIGPIPE` to only be changed if the `#[unix_sigpipe]` attribute isn't set.
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Remove more attributes from metadata
A lot of the attributes that are currently stored in the metadata aren't used at all. The biggest metadata usage comes from the doc attributes currently but they are needed by rustdoc so we only removed the ones that cannot be used in downstream crates (doc comments on private items).
r? `@ghost`
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the struct have
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Fixup a few tests needing asm support
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Account for hygiene in typo suggestions, and use them to point to shadowed names
Fixes https://github.com/rust-lang/rust/issues/97459
r? `@estebank`
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r=fee1-dead
Elaborate supertrait bounds when triggering `unused_must_use` on `impl Trait`
Given `impl Trait`, if one of its supertraits has a `#[must_use]`, then trigger the lint. This means that, for example, `-> impl ExactSizeIterator` also triggers the `must_use` on `trait Iterator`, which fixes #102183.
This might need `@rust-lang/lang` sign-off, since it changes the behavior of the lint, so cc'ing them.
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