Skip to content

Clarify "owned data" in E0515.md #138508

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 18, 2025
Merged

Clarify "owned data" in E0515.md #138508

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
9 changes: 6 additions & 3 deletions compiler/rustc_error_codes/src/error_codes/E0515.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -17,10 +17,13 @@ fn get_dangling_iterator<'a>() -> Iter<'a, i32> {
}
```

Local variables, function parameters and temporaries are all dropped before the
end of the function body. So a reference to them cannot be returned.
Local variables, function parameters and temporaries are all dropped before
the end of the function body. A returned reference (or struct containing a
reference) to such a dropped value would immediately be invalid. Therefore
it is not allowed to return such a reference.

Consider returning an owned value instead:
Consider returning a value that takes ownership of local data instead of
referencing it:

```
use std::vec::IntoIter;
Expand Down
Loading