| // Regression test for Issue #20971. | |
| //@ run-fail | |
| //@ error-pattern:Hello, world! | |
| //@ ignore-emscripten no processes | |
| pub trait Parser { | |
| type Input; | |
| fn parse(&mut self, input: <Self as Parser>::Input); | |
| } | |
| impl Parser for () { | |
| type Input = (); | |
| fn parse(&mut self, input: ()) {} | |
| } | |
| pub fn many() -> Box<dyn Parser<Input = <() as Parser>::Input> + 'static> { | |
| panic!("Hello, world!") | |
| } | |
| fn main() { | |
| many().parse(()); | |
| } |