mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-30 18:53:39 +00:00
22 lines
667 B
Rust
22 lines
667 B
Rust
// This test checks that the error messages you get for this example
|
|
// at least mention `'a` and `'static`. The precise messages can drift
|
|
// over time, but this test used to exhibit some pretty bogus messages
|
|
// that were not remotely helpful.
|
|
|
|
//@ error-pattern:argument requires that `'a` must outlive `'static`
|
|
|
|
struct Invariant<'a>(Option<&'a mut &'a mut ()>);
|
|
|
|
fn mk_static() -> Invariant<'static> { Invariant(None) }
|
|
|
|
fn unify<'a>(x: Option<Invariant<'a>>, f: fn(Invariant<'a>)) {
|
|
let bad = if x.is_some() {
|
|
x.unwrap() //~ ERROR borrowed data escapes outside of function [E0521]
|
|
} else {
|
|
mk_static()
|
|
};
|
|
f(bad);
|
|
}
|
|
|
|
fn main() {}
|