diff options
Diffstat (limited to 'tests/ui/panic-while-printing.rs')
-rw-r--r-- | tests/ui/panic-while-printing.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/tests/ui/panic-while-printing.rs b/tests/ui/panic-while-printing.rs new file mode 100644 index 000000000..3abedf2a7 --- /dev/null +++ b/tests/ui/panic-while-printing.rs @@ -0,0 +1,25 @@ +// run-pass +// needs-unwind + +#![feature(internal_output_capture)] + +use std::fmt; +use std::fmt::{Display, Formatter}; +use std::io::set_output_capture; +use std::sync::{Arc, Mutex}; + +pub struct A; + +impl Display for A { + fn fmt(&self, _f: &mut Formatter<'_>) -> fmt::Result { + panic!(); + } +} + +fn main() { + set_output_capture(Some(Arc::new(Mutex::new(Vec::new())))); + assert!(std::panic::catch_unwind(|| { + eprintln!("{}", A); + }) + .is_err()); +} |