28 lines
579 B
Rust
28 lines
579 B
Rust
trait X { fn foo(&self) {} }
|
|
|
|
fn p1<T>(v: T) -> Box<dyn X + 'static>
|
|
where T : X
|
|
{
|
|
Box::new(v) //~ ERROR parameter type `T` may not live long enough
|
|
}
|
|
|
|
fn p2<T>(v: Box<T>) -> Box<dyn X + 'static>
|
|
where Box<T> : X
|
|
{
|
|
Box::new(v) //~ ERROR parameter type `T` may not live long enough
|
|
}
|
|
|
|
fn p3<'a,T>(v: T) -> Box<dyn X + 'a>
|
|
where T : X
|
|
{
|
|
Box::new(v) //~ ERROR parameter type `T` may not live long enough
|
|
}
|
|
|
|
fn p4<'a,T>(v: Box<T>) -> Box<dyn X + 'a>
|
|
where Box<T> : X
|
|
{
|
|
Box::new(v) //~ ERROR parameter type `T` may not live long enough
|
|
}
|
|
|
|
fn main() {}
|