diff options
Diffstat (limited to 'src/test/ui/test-attrs/test-panic-while-printing.rs')
-rw-r--r-- | src/test/ui/test-attrs/test-panic-while-printing.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/test/ui/test-attrs/test-panic-while-printing.rs b/src/test/ui/test-attrs/test-panic-while-printing.rs new file mode 100644 index 000000000..01e460da5 --- /dev/null +++ b/src/test/ui/test-attrs/test-panic-while-printing.rs @@ -0,0 +1,25 @@ +// compile-flags:--test +// run-pass +// needs-unwind +// ignore-emscripten no subprocess support + +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()); +} |