forked from rust-lang/rust
-
Notifications
You must be signed in to change notification settings - Fork 1
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Rollup merge of rust-lang#124532 - lcnr:elaborate-coherence, r=compil…
…er-errors elaborate obligations in coherence The following test currently does not pass coherence: ```rust trait Super {} trait Sub<T>: Super {} trait Overlap<T> {} impl<T, U: Sub<T>> Overlap<T> for U {} impl<T> Overlap<T> for () {} fn main() {} ``` We check whether `(): Sub<?t>` holds. This stalls with ambiguity as downstream crates may add an impl for `(): Sub<Local>`. However, its super trait bound `(): Super` cannot be implemented downstream, so this one is known not to hold. By elaborating the bounds in the implicit negative overlap check, this now compiles. This is necessary to prevent breakage from enabling `-Znext-solver=coherence` (rust-lang#121848), see tests/ui/coherence/super-traits/super-trait-knowable-2.rs for more details. r? ``@compiler-errors``
- Loading branch information
Showing
24 changed files
with
230 additions
and
390 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,15 @@ | ||
error[E0277]: the trait bound `Point: From<(Ure, R1, MStorage)>` is not satisfied | ||
--> $DIR/issue-105449.rs:10:33 | ||
| | ||
LL | let _ = Into::<Point>::into(e.map_reference_coords()); | ||
| ------------------- ^^^^^^^^^^^^^^^^^^^^^^^^ the trait `From<(Ure, R1, MStorage)>` is not implemented for `Point`, which is required by `(Ure, R1, MStorage): Into<Point>` | ||
| | | ||
| required by a bound introduced by this call | ||
| | ||
= help: the trait `From<(Ure, Space, <DefaultAlloc as Allocator<Ure, Space>>::Buffer)>` is implemented for `Point` | ||
= help: for that trait implementation, expected `Space`, found `R1` | ||
= note: required for `(Ure, R1, MStorage)` to implement `Into<Point>` | ||
|
||
error: aborting due to 1 previous error | ||
|
||
For more information about this error, try `rustc --explain E0277`. |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.