mirror of https://github.com/rust-lang/rust
25 lines
746 B
Rust
25 lines
746 B
Rust
#![warn(unused_lifetimes, redundant_lifetimes)]
|
|
|
|
fn static_id<'a,'b>(t: &'a ()) -> &'static () where 'a: 'static { t }
|
|
//~^ WARN unnecessary lifetime parameter `'a`
|
|
//~| WARN lifetime parameter `'b` never used
|
|
|
|
fn static_id_indirect<'a,'b>(t: &'a ()) -> &'static ()
|
|
//~^ WARN unnecessary lifetime parameter `'a`
|
|
//~| WARN unnecessary lifetime parameter `'b`
|
|
where 'a: 'b, 'b: 'static { t }
|
|
|
|
fn static_id_wrong_way<'a>(t: &'a ()) -> &'static () where 'static: 'a {
|
|
t
|
|
//~^ ERROR lifetime may not live long enough
|
|
}
|
|
|
|
fn error(u: &(), v: &()) {
|
|
static_id(&u);
|
|
//~^ ERROR borrowed data escapes outside of function [E0521]
|
|
static_id_indirect(&v);
|
|
//~^ ERROR borrowed data escapes outside of function [E0521]
|
|
}
|
|
|
|
fn main() {}
|