[rustc.git] / src / test / ui / generic-associated-types / bugs / issue-87803.rs

// check-fail
// known-bug: #87803

// This should pass, but using a type alias vs a reference directly
// changes late-bound -> early-bound.

trait Scanner {
    type Input<'a>;
    type Token<'a>;

    fn scan<'a>(&mut self, i : Self::Input<'a>) -> Self::Token<'a>;
}

struct IdScanner();

impl Scanner for IdScanner {
    type Input<'a> = &'a str;
    type Token<'a> = &'a str;

    fn scan<'a>(&mut self, s : &'a str) -> &'a str {
        s
    }
}

fn main() {}
Commit	Line	Data
5099ac24	1	// check-fail
064997fb	2	// known-bug: #87803
5099ac24 FG	3
	4	// This should pass, but using a type alias vs a reference directly
	5	// changes late-bound -> early-bound.
	6
5099ac24 FG	7	trait Scanner {
	8	type Input<'a>;
	9	type Token<'a>;
	10
	11	fn scan<'a>(&mut self, i : Self::Input<'a>) -> Self::Token<'a>;
	12	}
	13
	14	struct IdScanner();
	15
	16	impl Scanner for IdScanner {
	17	type Input<'a> = &'a str;
	18	type Token<'a> = &'a str;
	19
	20	fn scan<'a>(&mut self, s : &'a str) -> &'a str {
	21	s
	22	}
	23	}
	24
	25	fn main() {}