-
Notifications
You must be signed in to change notification settings - Fork 13.4k
Delay a bug when failed to normalize trait ref during specialization #99795
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Merged
bors
merged 1 commit into
rust-lang:master
from
compiler-errors:delay-specialization-normalize-error
Aug 4, 2022
Merged
Changes from all commits
Commits
File filter
Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
There are no files selected for viewing
This file contains hidden or 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 hidden or 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 +1,20 @@ | ||
#![feature(specialization)] | ||
#![allow(incomplete_features)] | ||
|
||
trait X {} | ||
trait Y: X {} | ||
trait Z { | ||
type Assoc: Y; | ||
} | ||
struct A<T>(T); | ||
|
||
impl<T> Y for T where T: X {} | ||
impl<T: X> Z for A<T> { | ||
type Assoc = T; | ||
} | ||
|
||
// this impl is invalid, but causes an ICE anyway | ||
impl<T> From<<A<T> as Z>::Assoc> for T {} | ||
//~^ ERROR type parameter `T` must be used as the type parameter for some local type (e.g., `MyStruct<T>`) | ||
|
||
fn main() {} |
This file contains hidden or 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 +1,12 @@ | ||
error[E0210]: type parameter `T` must be used as the type parameter for some local type (e.g., `MyStruct<T>`) | ||
--> $DIR/issue-43037.rs:17:6 | ||
| | ||
LL | impl<T> From<<A<T> as Z>::Assoc> for T {} | ||
| ^ type parameter `T` must be used as the type parameter for some local type | ||
| | ||
= note: implementing a foreign trait is only possible if at least one of the types for which it is implemented is local | ||
= note: only traits defined in the current crate can be implemented for a type parameter | ||
|
||
error: aborting due to previous error | ||
|
||
For more information about this error, try `rustc --explain E0210`. |
This file contains hidden or 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 +1,12 @@ | ||
//~ ERROR overflow evaluating the requirement `T: Trait<_>` | ||
|
||
#![feature(specialization)] | ||
#![allow(incomplete_features)] | ||
|
||
pub trait Trait<T> {} | ||
|
||
default impl<T, U> Trait<T> for U {} | ||
|
||
impl<T> Trait<<T as Iterator>::Item> for T {} | ||
|
||
fn main() {} |
This file contains hidden or 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 +1,14 @@ | ||
error[E0275]: overflow evaluating the requirement `T: Trait<_>` | ||
| | ||
= help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`issue_45814`) | ||
note: required because of the requirements on the impl of `Trait<_>` for `T` | ||
--> $DIR/issue-45814.rs:8:20 | ||
| | ||
LL | default impl<T, U> Trait<T> for U {} | ||
| ^^^^^^^^ ^ | ||
= note: 128 redundant requirements hidden | ||
= note: required because of the requirements on the impl of `Trait<_>` for `T` | ||
|
||
error: aborting due to previous error | ||
|
||
For more information about this error, try `rustc --explain E0275`. |
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Uh oh!
There was an error while loading. Please reload this page.