mirror of https://github.com/rust-lang/rust
21 lines
593 B
Rust
21 lines
593 B
Rust
// Simplified regression test for #30438, inspired by arielb1.
|
|
|
|
trait Trait { type Out; }
|
|
|
|
struct Test<'a> { s: &'a str }
|
|
|
|
fn silly<'y, 'z>(_s: &'y Test<'z>) -> &'y <Test<'z> as Trait>::Out where 'z: 'static {
|
|
let x = Test { s: "this cannot last" };
|
|
&x
|
|
//~^ ERROR: cannot return reference to local variable `x`
|
|
}
|
|
|
|
impl<'b> Trait for Test<'b> { type Out = Test<'b>; }
|
|
|
|
fn main() {
|
|
let orig = Test { s: "Hello World" };
|
|
let r = silly(&orig);
|
|
println!("{}", orig.s); // OK since `orig` is valid
|
|
println!("{}", r.s); // Segfault (method does not return a sane value)
|
|
}
|