| Age | Commit message (Collapse) | Author | Lines |
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Rename `static_mut_ref` lint to `static_mut_refs`.
(cherry picked from commit 408eeae59d35cbcaab2cfb345d24373954e74fc5)
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Expand the primary span of E0277 when the immediate unmet bound is not what the user wrote:
```
error[E0277]: the trait bound `i32: Bar` is not satisfied
--> f100.rs:6:6
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6 | <i32 as Foo>::foo();
| ^^^ the trait `Bar` is not implemented for `i32`, which is required by `i32: Foo`
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help: this trait has no implementations, consider adding one
--> f100.rs:2:1
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2 | trait Bar {}
| ^^^^^^^^^
note: required for `i32` to implement `Foo`
--> f100.rs:3:14
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3 | impl<T: Bar> Foo for T {}
| --- ^^^ ^
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| unsatisfied trait bound introduced here
```
Fix #40120.
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Deduplicate more sized errors on call exprs
Change the implicit `Sized` `Obligation` `Span` for call expressions to include the whole expression. This aids the existing deduplication machinery to reduce the number of errors caused by a single unsized expression.
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Issue tests numbered 1920, 3668, 5997, 23302, 32122, 40510, 57741, 71676, and 76077 were moved to relevant better-named subdirectories. ISSUES_ENTRY_LIMIT was adjusted to match new number of files and FIXME note was expanded.
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Change the implicit `Sized` `Obligation` `Span` for call expressions to
include the whole expression. This aids the existing deduplication
machinery to reduce the number of errors caused by a single unsized
expression.
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Always use RevealAll for const eval queries
implements what is described in https://github.com/rust-lang/rust/pull/116803#discussion_r1364089471
Using `UserFacing` for const eval does not make sense anymore, unless we significantly change things like avoiding revealing opaque types.
New tests are copied from https://github.com/rust-lang/rust/pull/101478
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Update tests
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Avoid silencing relevant follow-up errors
r? `@matthewjasper`
This PR only adds new errors to tests that are already failing and fixes one ICE.
Several tests were changed to not emit new errors. I believe all of them were faulty tests, and not explicitly testing for the code that had new errors.
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Disallow reference to `static mut` and adding `static_mut_ref` lint
Closes #114447
r? `@scottmcm`
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This is to make the diff when stabilizing it easier to review.
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Merge `unused_tuple_struct_fields` into `dead_code`
This implicitly upgrades the lint from `allow` to `warn` and places it into the `unused` lint group.
[Discussion on Zulip](https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/Moving.20.60unused_tuple_struct_fields.60.20from.20allow.20to.20warn)
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Reorder check_item_type diagnostics so they occur next to the corresponding `check_well_formed` diagnostics
The first commit is just a cleanup.
The second commit moves most checks from `check_mod_item_types` into `check_well_formed`, invoking the checks in lockstep per-item instead of iterating over all items twice.
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Only suggest `derive(PartialEq)` when both LHS and RHS types
are the same, otherwise the suggestion is not useful.
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corresponding `check_well_formed` diagnostics
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fix: diagnostic for casting reference to slice
fixes: #118790
Removes `if self.cast_ty.is_trait()` to produce the same diagnostic for cast to slice and trait.
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When shortening types and writing them to disk, make `short_ty_string`
capable of reusing the same file, instead of writing a file per
shortened type.
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Support bare unit structs in destructuring assignments
We should be allowed to use destructuring assignments on *bare* unit structs, not just unit structs that are located within other pattern constructors.
Fixes #118753
r? petrochenkov since you reviewed #95380, reassign if you're busy or don't want to review this.
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On borrow return type, suggest borrowing from arg or owned return type
When we encounter a function with a return type that has an anonymous lifetime with no argument to borrow from, besides suggesting the `'static` lifetime we now also suggest changing the arguments to be borrows or changing the return type to be an owned type.
```
error[E0106]: missing lifetime specifier
--> $DIR/variadic-ffi-6.rs:7:6
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LL | ) -> &usize {
| ^ expected named lifetime parameter
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= help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`
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LL | ) -> &'static usize {
| +++++++
help: instead, you are more likely to want to change one of the arguments to be borrowed...
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LL | x: &usize,
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help: ...or alternatively, to want to return an owned value
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LL - ) -> &usize {
LL + ) -> usize {
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```
Fix #85843.
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Add lint against ambiguous wide pointer comparisons
This PR is the resolution of https://github.com/rust-lang/rust/issues/106447 decided in https://github.com/rust-lang/rust/issues/117717 by T-lang.
## `ambiguous_wide_pointer_comparisons`
*warn-by-default*
The `ambiguous_wide_pointer_comparisons` lint checks comparison of `*const/*mut ?Sized` as the operands.
### Example
```rust
let ab = (A, B);
let a = &ab.0 as *const dyn T;
let b = &ab.1 as *const dyn T;
let _ = a == b;
```
### Explanation
The comparison includes metadata which may not be expected.
-------
This PR also drops `clippy::vtable_address_comparisons` which is superseded by this one.
~~One thing: is the current naming right? `invalid` seems a bit too much.~~
Fixes https://github.com/rust-lang/rust/issues/117717
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detects redundant imports that can be eliminated.
for #117772 :
In order to facilitate review and modification, split the checking code and
removing redundant imports code into two PR.
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Remove unnecessary span label for parse errors that already have a
suggestion.
Provide structured suggestion to close generics in more cases.
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Tweak message on ADT with private fields building
When trying to create an inaccessible ADT due to private fields, handle the case when no fields were passed.
```
error: cannot construct `Foo` with struct literal syntax due to private fields
--> $DIR/issue-76077.rs:8:5
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LL | foo::Foo {};
| ^^^^^^^^
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= note: private field `you_cant_use_this_field` that was not provided
```
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When trying to create an inaccessible ADT due to private fields, handle
the case when no fields were passed.
```
error: cannot construct `Foo` with struct literal syntax due to private fields
--> $DIR/issue-76077.rs:8:5
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LL | foo::Foo {};
| ^^^^^^^^
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= note: private field `you_cant_use_this_field` that was not provided
```
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Co-authored-by: Adrian <adrian.iosdev@gmail.com>
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When we encounter a function with a return type that has an anonymous
lifetime with no argument to borrow from, besides suggesting the
`'static` lifetime we now also suggest changing the arguments to be
borrows or changing the return type to be an owned type.
```
error[E0106]: missing lifetime specifier
--> $DIR/variadic-ffi-6.rs:7:6
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LL | ) -> &usize {
| ^ expected named lifetime parameter
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= help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`
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LL | ) -> &'static usize {
| +++++++
help: instead, you are more likely to want to change one of the arguments to be borrowed...
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LL | x: &usize,
| +
help: ...or alternatively, to want to return an owned value
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LL - ) -> &usize {
LL + ) -> usize {
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```
Fix #85843.
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Suggest field typo through derefs
Take into account implicit dereferences when suggesting fields.
```
error[E0609]: no field `longname` on type `Arc<S>`
--> $DIR/suggest-field-through-deref.rs:10:15
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LL | let _ = x.longname;
| ^^^^^^^^ help: a field with a similar name exists: `long_name`
```
CC https://github.com/rust-lang/rust/issues/78374#issuecomment-719564114
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When a local binding shadows a fn, point at fn def in call failure
When a local binding shadows a function that is then called, this local binding will cause an E0618 error. We now point not only at the binding definition, but also at the locally defined function of the same name.
```
error[E0618]: expected function, found `&str`
--> $DIR/issue-22468.rs:3:13
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LL | let foo = "bar";
| --- `foo` has type `&str`
LL | let x = foo("baz");
| ^^^-------
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| call expression requires function
...
LL | fn foo(file: &str) -> bool {
| -------------------------- this function of the same name is available here, but it shadowed by the local binding of the same name
```
Fix #53841
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When a local binding shadows a function that is then called, this local
binding will cause an E0618 error. We now point not only at the binding
definition, but also at the locally defined function of the same name.
```
error[E0618]: expected function, found `&str`
--> $DIR/issue-22468.rs:3:13
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LL | let foo = "bar";
| --- `foo` has type `&str`
LL | let x = foo("baz");
| ^^^-------
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| call expression requires function
...
LL | fn foo(file: &str) -> bool {
| -------------------------- this function of the same name is avalable here, but it shadowed by the local binding of the same name
```
Fix #53841
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Rollup of 7 pull requests
Successful merges:
- #117338 (Remove asmjs)
- #117549 (Use `copied` instead of manual `map`)
- #117745 (Emit smir)
- #117964 (When using existing fn as module, don't claim it doesn't exist)
- #118006 (clarify `fn discriminant` guarantees: only free lifetimes may get erased)
- #118016 (Add stable mir members to triagebot config)
- #118022 (Miri subtree update)
r? `@ghost`
`@rustbot` modify labels: rollup
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Remove asmjs
Fulfills [MCP 668](https://github.com/rust-lang/compiler-team/issues/668).
`asmjs-unknown-emscripten` does not work as-specified, and lacks essential upstream support for generating asm.js, so it should not exist at all.
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When encountering a `Result<T, _>` or `Option<T>` where `T` has a field
that's being accessed, suggest calling `.unwrap()` to get to the field.
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Take into account implicit dereferences when suggesting fields.
```
error[E0609]: no field `longname` on type `Arc<S>`
--> $DIR/suggest-field-through-deref.rs:10:15
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LL | let _ = x.longname;
| ^^^^^^^^ help: a field with a similar name exists: `long_name`
```
CC https://github.com/rust-lang/rust/issues/78374#issuecomment-719564114
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Partially address #71039.
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