[rustc.git] / src / test / ui / issues / issue-52057.rs

// Regression test for #52057. There is an implied bound
// that `I: 'a` where `'a` is the lifetime of `self` in `parse_first`;
// but to observe that, one must normalize first.
//
// run-pass

pub trait Parser {
    type Input;

    fn parse_first(input: &mut Self::Input);
}

impl<'a, I, P: ?Sized> Parser for &'a mut P
where
    P: Parser<Input = I>,
{
    type Input = I;

    fn parse_first(_: &mut Self::Input) {}
}

fn main() {}
Commit	Line	Data
8faf50e0 XL	1	// Regression test for #52057. There is an implied bound
	2	// that `I: 'a` where `'a` is the lifetime of `self` in `parse_first`;
	3	// but to observe that, one must normalize first.
	4	//
	5	// run-pass
1a4d82fc	6
8faf50e0 XL	7	pub trait Parser {
8faf50e0 XL	8	type Input;
9e0c209e	9
8faf50e0	10	fn parse_first(input: &mut Self::Input);
223e47cc LB	11	}
223e47cc LB	12
8faf50e0 XL	13	impl<'a, I, P: ?Sized> Parser for &'a mut P
	14	where
	15	P: Parser<Input = I>,
	16	{
	17	type Input = I;
	18
	19	fn parse_first(_: &mut Self::Input) {}
	20	}
a7813a04	21
9e0c209e	22	fn main() {}