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Author SHA1 Message Date
Matthias Krüger
b0b54f2f8b
Rollup merge of #135055 - compiler-errors:rpitit-infer-in-stricter-impl, r=estebank 
Report impl method has stricter requirements even when RPITIT inference gets in the way

See the comment I added in the code. Fixes #122506.
 2025-01-04 09:54:38 +01:00
Michael Goulet
2d602ea793 Do not project when there are unconstrained impl params 2025-01-03 05:01:14 +00:00
Michael Goulet
c29838843b Report impl has stricter requirements even when RPITIT inference gets in the way 2025-01-03 02:45:29 +00:00
Matthias Krüger
2846699366
Rollup merge of #134181 - estebank:trim-render, r=oli-obk 
Tweak multispan rendering to reduce output length

Consider comments and bare delimiters the same as an "empty line" for purposes of hiding rendered code output of long multispans. This results in more aggressive shortening of rendered output without losing too much context, specially in `*.stderr` tests that have "hidden" comments. We do that check not only on the first 4 lines of the multispan, but now also on the previous to last line as well.
 2024-12-14 03:54:31 +01:00
Esteban Küber
65a54a7f27 Tweak multispan rendering 
Consider comments and bare delimiters the same as an "empty line" for purposes of hiding rendered code output of long multispans. This results in more aggressive shortening of rendered output without losing too much context, specially in `*.stderr` tests that have "hidden" comments.
 2024-12-12 23:36:27 +00:00
Michael Goulet
57e8a1c9c3 Don't check RPITITs that are Self:Sized for PointerLike 2024-12-10 17:23:02 +00:00
Esteban Küber
d860e5b088 Mention type parameter in more cases and don't suggest ~const bound already there 2024-12-07 21:37:13 +00:00
Esteban Küber
3f2a63a68b Use trait name instead of full constraint in suggestion message 
```
help: consider restricting type parameter `T` with traits `Copy` and `Trait`
   |
LL | fn duplicate_custom<T: Copy + Trait>(t: S<T>) -> (S<T>, S<T>) {
   |                      ++++++++++++++
```

```
help: consider restricting type parameter `V` with trait `Copy`
   |
LL | fn index<'a, K, V: std::marker::Copy>(map: &'a HashMap<K, V>, k: K) -> &'a V {
   |                  +++++++++++++++++++
```
 2024-12-07 21:29:58 +00:00
Esteban Küber
d13c34828e reword trait bound suggestion message to include the bounds 2024-12-07 21:26:20 +00:00
Michael Goulet
398fd901d5 Assert that obligations are empty before deeply normalizing 2024-12-02 22:51:18 +00:00
Michael Goulet
1e655ef213 Move refinement check out of compare_impl_item 2024-11-30 16:45:01 +00:00
Michael Goulet
15dff274d0 Actually use placeholder regions for trait method late bound regions in collect_return_position_impl_trait_in_trait_tys 2024-11-24 23:11:49 +00:00
Eric Huss
31c9222639 Stabilize the 2024 edition 2024-11-22 11:12:15 -08:00
Michael Goulet
32d2340dbd Check use<..> in RPITIT for refinement 2024-11-18 00:27:44 +00:00
bors
b3f75cc872 Auto merge of #132147 - estebank:long-types-2, r=davidtwco 
Tweak E0277 output when a candidate is available

*Follow up to #132086.*

Go from

```
error[E0277]: the trait bound `Then<Ignored<chumsky::combinator::Filter<chumsky::primitive::Any<&str, chumsky::extra::Full<EmptyErr, (), ()>>, {closure@src/main.rs:9:17: 9:27}>, char>, chumsky::combinator::Map<impl CSTParser<'a, O>, O, {closure@src/main.rs:11:24: 11:27}>, (), (), chumsky::extra::Full<EmptyErr, (), ()>>: CSTParser<'a>` is not satisfied
 --> src/main.rs:7:50
  |
7 | fn leaf<'a, O>(parser: impl CSTParser<'a, O>) -> impl CSTParser<'a, ()> {
  |                                                  ^^^^^^^^^^^^^^^^^^^^^^ the trait `chumsky::private::ParserSealed<'_, &str, (), chumsky::extra::Full<EmptyErr, (), ()>>` is not implemented for `Then<Ignored<Filter<Any<&str, ...>, ...>, ...>, ..., ..., ..., ...>`, which is required by `Then<Ignored<chumsky::combinator::Filter<chumsky::primitive::Any<&str, chumsky::extra::Full<EmptyErr, (), ()>>, {closure@src/main.rs:9:17: 9:27}>, char>, chumsky::combinator::Map<impl CSTParser<'a, O>, O, {closure@src/main.rs:11:24: 11:27}>, (), (), chumsky::extra::Full<EmptyErr, (), ()>>: CSTParser<'a>`
  |
  = help: the trait `chumsky::private::ParserSealed<'_, &'a str, ((), ()), chumsky::extra::Full<EmptyErr, (), ()>>` is implemented for `Then<Ignored<chumsky::combinator::Filter<chumsky::primitive::Any<&str, chumsky::extra::Full<EmptyErr, (), ()>>, {closure@src/main.rs:9:17: 9:27}>, char>, chumsky::combinator::Map<impl CSTParser<'a, O>, O, {closure@src/main.rs:11:24: 11:27}>, (), (), chumsky::extra::Full<EmptyErr, (), ()>>`
  = help: for that trait implementation, expected `((), ())`, found `()`
  = note: required for `Then<Ignored<Filter<Any<&str, ...>, ...>, ...>, ..., ..., ..., ...>` to implement `Parser<'_, &str, ()>`
note: required for `Then<Ignored<Filter<Any<&str, ...>, ...>, ...>, ..., ..., ..., ...>` to implement `CSTParser<'a>`
 --> src/main.rs:5:16
  |
5 | impl<'a, O, T> CSTParser<'a, O> for T where T: Parser<'a, &'a str, O> {}
  |                ^^^^^^^^^^^^^^^^     ^          ---------------------- unsatisfied trait bound introduced here
  = note: the full name for the type has been written to '/home/gh-estebank/longlong/target/debug/deps/longlong-0008f9a4f2023b08.long-type-13239977239800463552.txt'
  = note: consider using `--verbose` to print the full type name to the console
  = note: the full name for the type has been written to '/home/gh-estebank/longlong/target/debug/deps/longlong-0008f9a4f2023b08.long-type-13239977239800463552.txt'
  = note: consider using `--verbose` to print the full type name to the console
```

to

```
error[E0277]: the trait bound `Then<Ignored<chumsky::combinator::Filter<chumsky::primitive::Any<&str, chumsky::extra::Full<EmptyErr, (), ()>>, {closure@src/main.rs:9:17: 9:27}>, char>, chumsky::combinator::Map<impl CSTParser<'a, O>, O, {closure@src/main.rs:11:24: 11:27}>, (), (), chumsky::extra::Full<EmptyErr, (), ()>>: CSTParser<'a>` is not satisfied
  --> src/main.rs:7:50
   |
7  | fn leaf<'a, O>(parser: impl CSTParser<'a, O>) -> impl CSTParser<'a, ()> {
   |                                                  ^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
...
11 |     ws.then(parser.map(|_| ()))
   |     --------------------------- return type was inferred to be `Then<Ignored<..., ...>, ..., ..., ..., ...>` here
   |
   = help: the trait `ParserSealed<'_, &_, (), Full<_, _, _>>` is not implemented for `Then<Ignored<..., ...>, ..., ..., ..., ...>`
           but trait `ParserSealed<'_, &'a _, ((), ()), Full<_, _, _>>` is implemented for it
   = help: for that trait implementation, expected `((), ())`, found `()`
   = note: required for `Then<Ignored<..., ...>, ..., ..., ..., ...>` to implement `Parser<'_, &str, ()>`
note: required for `Then<Ignored<..., ...>, ..., ..., ..., ...>` to implement `CSTParser<'a>`
  --> src/main.rs:5:16
   |
5  | impl<'a, O, T> CSTParser<'a, O> for T where T: Parser<'a, &'a str, O> {}
   |                ^^^^^^^^^^^^^^^^     ^          ---------------------- unsatisfied trait bound introduced here
   = note: the full name for the type has been written to '/home/gh-estebank/longlong/target/debug/deps/longlong-df9d52be87eada65.long-type-1337037744507305372.txt'
   = note: consider using `--verbose` to print the full type name to the console
```

* Remove redundant wording
* Introduce trait diff highlighting logic and use it
* Fix incorrect "long type written to path" logic (can be split off)
* Point at tail expression in more cases in E0277
* Avoid long primary span labels in E0277 by moving them to a `help`

Fix #132013.

There are individual commits that can be their own PR. If the review load is too big, happy to split them off.
 2024-11-02 20:22:49 +00:00
Esteban Küber
b7fc1a7431 Add trait diff highlighting logic and use it in E0277 
When a trait is not implemented for a type, but there *is* an `impl`
for another type or different trait params, we format the output to
use highlighting in the same way that E0308 does for types.

The logic accounts for 3 cases:
- When both the type and trait in the expected predicate and the candidate are different
- When only the types are different
- When only the trait generic params are different

For each case, we use slightly different formatting and wording.
 2024-11-02 03:08:04 +00:00
Camille GILLOT
e2a50de5f4 Use more minimized test. 2024-11-01 18:13:26 +00:00
Camille GILLOT
45d4465028 Account for late-bound depth when capturing all opaque lifetimes. 2024-11-01 17:03:17 +00:00
bors
75eff9a574 Auto merge of #132377 - matthiaskrgr:rollup-3p1c6hs, r=matthiaskrgr 
Rollup of 3 pull requests

Successful merges:

 - #132368 (Remove `do_not_const_check` from `Iterator` methods)
 - #132373 (Make sure `type_param_predicates` resolves correctly for RPITIT)
 - #132374 (Remove dead code stemming from the old effects desugaring)

r? `@ghost`
`@rustbot` modify labels: rollup
 2024-10-31 00:46:22 +00:00
Michael Goulet
d53ca63453 Make sure type_param_predicates resolves correctly for RPITIT 2024-10-30 22:30:28 +00:00
Camille GILLOT
d693e19268 Promote crashes tests to ui. 2024-10-30 16:19:53 +00:00
Camille GILLOT
b6e1214ac0 Remap impl-trait lifetimes on HIR instead of AST lowering. 2024-10-30 16:18:50 +00:00
Esteban Küber
5b54286640 Remove detail from label/note that is already available in other note 
Remove the "which is required by `{root_obligation}`" post-script in
"the trait `X` is not implemented for `Y`" explanation in E0277. This
information is already conveyed in the notes explaining requirements,
making it redundant while making the text (particularly in labels)
harder to read.

```
error[E0277]: the trait bound `NotCopy: Copy` is not satisfied
  --> $DIR/wf-static-type.rs:10:13
   |
LL | static FOO: IsCopy<Option<NotCopy>> = IsCopy { t: None };
   |             ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `NotCopy`
   |
   = note: required for `Option<NotCopy>` to implement `Copy`
note: required by a bound in `IsCopy`
  --> $DIR/wf-static-type.rs:7:17
   |
LL | struct IsCopy<T:Copy> { t: T }
   |                 ^^^^ required by this bound in `IsCopy`
```
vs the prior

```
error[E0277]: the trait bound `NotCopy: Copy` is not satisfied
  --> $DIR/wf-static-type.rs:10:13
   |
LL | static FOO: IsCopy<Option<NotCopy>> = IsCopy { t: None };
   |             ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `NotCopy`, which is required by `Option<NotCopy>: Copy`
   |
   = note: required for `Option<NotCopy>` to implement `Copy`
note: required by a bound in `IsCopy`
  --> $DIR/wf-static-type.rs:7:17
   |
LL | struct IsCopy<T:Copy> { t: T }
   |                 ^^^^ required by this bound in `IsCopy`
```
 2024-10-29 16:26:57 +00:00
León Orell Valerian Liehr
442f39582d
Move an impl-Trait check from AST validation to AST lowering 2024-10-27 07:41:52 +01:00
Matthias Krüger
559f8ce726
Rollup merge of #131795 - compiler-errors:expectation, r=Nadrieril 
Stop inverting expectation in normalization errors

We have some funky special case logic to invert the expectation and actual type for normalization errors depending on their cause code. IMO most of the error messages get better, except for `try {}` blocks' type expectations. I think that these need to be special cased in some other way, rather than via this hack.

Fixes #131763
 2024-10-19 22:00:57 +02:00
Michael Goulet
99d5f3b280 Stop inverting expectation in normalization errors 2024-10-16 13:44:56 -04:00
Michael Goulet
8528387743 Be better at reporting alias errors 2024-10-15 20:42:17 -04:00
Michael Goulet
fd2038d344 Make sure the alias is actually rigid 2024-10-15 20:42:17 -04:00
Matthias Krüger
fa3dff3e24
Rollup merge of #131475 - fmease:compiler-mv-obj-safe-dyn-compat-2, r=jieyouxu 
Compiler & its UI tests: Rename remaining occurrences of "object safe" to "dyn compatible"

Follow-up to #130826.
Part of #130852.

1. 1st commit: Fix stupid oversights. Should've been part of #130826.
2. 2nd commit: Rename the unstable feature `object_safe_for_dispatch` to `dyn_compatible_for_dispatch`. Might not be worth the churn, you decide.
3. 3rd commit: Apply the renaming to all UI tests (contents and paths).
 2024-10-10 22:00:50 +02:00
Michael Goulet
a7dc98733d Add variances to RPITITs 2024-10-10 11:46:48 -07:00
Michael Goulet
09da2ebd63 Move ty::Error branch into super_combine_tys 2024-10-10 06:07:51 -04:00
León Orell Valerian Liehr
20cebae312
UI tests: Rename "object safe" to "dyn compatible" 2024-10-10 01:13:29 +02:00
León Orell Valerian Liehr
01a063f9df
Compiler: Rename "object safe" to "dyn compatible" 2024-09-25 13:26:48 +02:00
Trevor Gross
2269381e0a
Rollup merge of #129429 - cjgillot:named-variance, r=compiler-errors 
Print the generic parameter along with the variance in dumps.

This allows to make sure we are testing what we think we are testing.

While the tests are correct, I discovered that opaque duplicated args are in the reverse declaration order.
 2024-08-24 21:03:32 -05:00
Camille GILLOT
5cef88c1f4 Print the generic parameter along with the variance in dumps. 2024-08-23 23:00:45 +00:00
Michael Goulet
8eb15586c6 Don't trigger refinement lint if predicates reference errors 2024-08-22 12:34:12 -04:00
Michael Goulet
84044cd50f Bless test fallout 2024-08-17 12:43:25 -04:00
Esteban Küber
860c8cdeaf Differentiate between methods and associated functions 
Accurately refer to assoc fn without receiver as assoc fn instead of methods.
Add `AssocItem::descr` method to centralize where we call methods and associated functions.
 2024-08-10 00:54:16 +00:00
Michael Goulet
c656ce7aeb Don't arbitrarily choose one upper bound for hidden captured region 2024-08-06 15:43:41 -04:00
Esteban Küber
921de9d8ea Revert suggestion verbosity change 2024-07-22 22:51:53 +00:00
Esteban Küber
5c2b36a21c Change suggestion message wording 2024-07-22 22:04:49 +00:00
Esteban Küber
c807ac0340 Use verbose suggestion for "wrong # of generics" 2024-07-22 22:04:49 +00:00
yukang
40e07a3ab1 Remove invalid further restricting for type bound 2024-07-17 19:08:37 +08:00
Michael Goulet
d6276b37ea Don't try to label ObligationCauseCode::CompareImplItem for an RPITIT, since it has no name 2024-07-06 15:20:37 -04:00
Esteban Küber
75692056e1 Use verbose suggestion for changing arg type 2024-07-05 20:58:33 +00:00
bors
4bc39f028d Auto merge of #120924 - xFrednet:rfc-2383-stabilization-party, r=Urgau,blyxyas 
Let's `#[expect]` some lints: Stabilize `lint_reasons` (RFC 2383)

Let's give this another try! The [previous stabilization attempt](https://github.com/rust-lang/rust/pull/99063) was stalled by some unresolved questions. These have been discussed in a [lang team](https://github.com/rust-lang/lang-team/issues/191) meeting. The last open question, regarding the semantics of the `#[expect]` attribute was decided on in https://github.com/rust-lang/rust/issues/115980

I've just updated the [stabilization report](https://github.com/rust-lang/rust/issues/54503#issuecomment-1179563964) with the discussed questions and decisions. Luckily, the decision is inline with the current implementation.

This hopefully covers everything. Let's hope that the CI will be green like the spring.

fixes #115980
fixes #54503

---

r? `@wesleywiser`

Tacking Issue: https://github.com/rust-lang/rust/issues/54503
Stabilization Report: https://github.com/rust-lang/rust/issues/54503#issuecomment-1179563964
Documentation Update: https://github.com/rust-lang/reference/pull/1237

<!--
For Clippy:

changelog: [`allow_attributes`]: Is now available on stable, since the `lint_reasons` feature was stabilized
changelog: [`allow_attributes_without_reason`]: Is now available on stable, since the `lint_reasons` feature was stabilized
-->

---

Roses are red,
Violets are blue,
Let's expect lints,
With reason clues
 2024-06-26 16:38:30 +00:00
Rémy Rakic
6402909f42 delay bug in RPITIT refinement checking with resolution errors 2024-06-25 21:05:54 +00:00
xFrednet
8b14e23dce
RFC 2383: Stabilize lint_reasons 🎉 2024-06-25 17:22:22 +02:00
Oli Scherer
39b39da40b Stop proving outlives constraints on regions we already reported errors on 2024-05-29 09:27:07 +00:00
Michael Goulet
119c7bbef7 Report better WF obligation leaf obligations in new solver 2024-05-16 21:08:42 -04:00