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// Checks what happens when formatting the panic message panics.
//@ run-fail
//@ exec-env:RUST_BACKTRACE=0
//@ check-run-results
//@ error-pattern: panicked while processing panic
//@ normalize-stderr: "\n +[0-9]+:[^\n]+" -> ""
//@ normalize-stderr: "\n +at [^\n]+" -> ""
//@ normalize-stderr: "(core/src/panicking\.rs):[0-9]+:[0-9]+" -> "$1:$$LINE:$$COL"
//@ ignore-emscripten "RuntimeError" junk in output
use std::fmt::{Display, self};
struct MyStruct;
impl Display for MyStruct {
fn fmt(&self, _: &mut fmt::Formatter<'_>) -> fmt::Result {
todo!()
}
}
fn main() {
let instance = MyStruct;
panic!("this is wrong: {}", instance);
}
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