Skip to content

clean up and properly test temporary lifetime extension in doctests #1979

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

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open

clean up and properly test temporary lifetime extension in doctests #1979

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: 6 additions & 2 deletions src/destructors.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -448,15 +448,18 @@ Here are some examples where expressions have extended temporary scopes:

```rust
# fn temp() {}
# trait Use { fn use_temp(&self) -> &Self { self } }
# impl Use for () {}
// The temporary that stores the result of `temp()` lives in the same scope
// as x in these cases.
let x = &temp();
# x;
let x = &temp() as &dyn Send;
# x;
let x = (&*&temp(),);
# x;
let x = { [Some(&temp()) ] };
# x;
let ref x = temp();
# x;
let ref x = *&temp();
# x;
```
Expand All @@ -471,6 +474,7 @@ Here are some examples where expressions don't have extended temporary scopes:
// end of the let statement in these cases.

let x = std::convert::identity(&temp()); // ERROR
# x;
let x = (&temp()).use_temp(); // ERROR
# x;
```
Expand Down