mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-01 06:51:58 +00:00
03c88aaf21
When going through auto-deref, the `<T as Clone>` impl sometimes needs
to be specified for rustc to actually clone the value and not the
reference.
```
error[E0507]: cannot move out of dereference of `S`
--> $DIR/needs-clone-through-deref.rs:15:18
|
LL | for _ in self.clone().into_iter() {}
| ^^^^^^^^^^^^ ----------- value moved due to this method call
| |
| move occurs because value has type `Vec<usize>`, which does not implement the `Copy` trait
|
note: `into_iter` takes ownership of the receiver `self`, which moves value
--> $SRC_DIR/core/src/iter/traits/collect.rs:LL:COL
help: you can `clone` the value and consume it, but this might not be your desired behavior
|
LL | for _ in <Vec<usize> as Clone>::clone(&self.clone()).into_iter() {}
| ++++++++++++++++++++++++++++++ +
```
CC #109429.
16 lines
360 B
Rust
16 lines
360 B
Rust
// run-rustfix
|
|
// Test that a by-ref `FnMut` closure gets an error when it tries to
|
|
// consume a value.
|
|
|
|
fn call<F>(f: F) where F : Fn() {
|
|
f();
|
|
}
|
|
|
|
fn main() {
|
|
let y = vec![format!("World")];
|
|
call(|| {
|
|
<Vec<String> as Clone>::clone(&y).into_iter();
|
|
//~^ ERROR cannot move out of `y`, a captured variable in an `Fn` closure
|
|
});
|
|
}
|