25 lines
473 B
Rust
25 lines
473 B
Rust
// run-pass
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// needs-unwind
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#![feature(internal_output_capture)]
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use std::fmt;
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use std::fmt::{Display, Formatter};
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use std::io::set_output_capture;
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use std::sync::{Arc, Mutex};
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pub struct A;
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impl Display for A {
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fn fmt(&self, _f: &mut Formatter<'_>) -> fmt::Result {
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panic!();
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}
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}
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fn main() {
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set_output_capture(Some(Arc::new(Mutex::new(Vec::new()))));
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assert!(std::panic::catch_unwind(|| {
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eprintln!("{}", A);
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})
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.is_err());
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}
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