rust/tests/ui/test-attrs/test-panic-while-printing.rs
2024-02-16 20:02:50 +00:00

25 lines
417 B
Rust

//@ compile-flags:--test
//@ run-pass
//@ needs-unwind
use std::fmt;
use std::fmt::{Display, Formatter};
pub struct A(Vec<u32>);
impl Display for A {
fn fmt(&self, _f: &mut Formatter<'_>) -> fmt::Result {
self.0[0];
Ok(())
}
}
#[test]
fn main() {
let result = std::panic::catch_unwind(|| {
let a = A(vec![]);
eprintln!("{}", a);
});
assert!(result.is_err());
}