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Diffstat (limited to 'tests/ui/test-attrs/test-panic-while-printing.rs')
-rw-r--r-- | tests/ui/test-attrs/test-panic-while-printing.rs | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/tests/ui/test-attrs/test-panic-while-printing.rs b/tests/ui/test-attrs/test-panic-while-printing.rs new file mode 100644 index 000000000..033c8beb4 --- /dev/null +++ b/tests/ui/test-attrs/test-panic-while-printing.rs @@ -0,0 +1,24 @@ +// 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()); +} |