Skip to content

Cleanup E0391 explanation #69807

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.

Sign up for GitHub

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
merged 1 commit into from
Mar 9, 2020
Merged

Cleanup E0391 explanation #69807

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
8 changes: 5 additions & 3 deletions src/librustc_error_codes/error_codes/E0391.md
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,7 +1,6 @@
This error indicates that some types or traits depend on each other
and therefore cannot be constructed.
A type dependency cycle has been encountered.

The following example contains a circular dependency between two traits:
Erroneous code example:

```compile_fail,E0391
trait FirstTrait : SecondTrait {
Expand All @@ -12,3 +11,6 @@ trait SecondTrait : FirstTrait {

}
```

The previous example contains a circular dependency between two traits:
`FirstTrait` depends on `SecondTrait` which itself depends on `FirstTrait`.