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This error occurs because a value was dropped while it was still borrowed.
Erroneous code example:
```compile_fail,E0597
struct Foo<'a> {
x: Option<&'a u32>,
}
let mut x = Foo { x: None };
{
let y = 0;
x.x = Some(&y); // error: `y` does not live long enough
}
println!("{:?}", x.x);
```
Here, `y` is dropped at the end of the inner scope, but it is borrowed by
`x` until the `println`. To fix the previous example, just remove the scope
so that `y` isn't dropped until after the println
```
struct Foo<'a> {
x: Option<&'a u32>,
}
let mut x = Foo { x: None };
let y = 0;
x.x = Some(&y);
println!("{:?}", x.x);
```
|
