[rustc.git] / src / test / ui / compare-method / region-extra-2.rs

// Regression test for issue #22779. An extra where clause was
// permitted on the impl that is not present on the trait.

trait Tr<'a, T> {
    fn renew<'b: 'a>(self) -> &'b mut [T];
}

impl<'a, T> Tr<'a, T> for &'a mut [T] {
    fn renew<'b: 'a>(self) -> &'b mut [T] where 'a: 'b {
        //~^ ERROR E0276
        &mut self[..]
    }
}

fn main() { }
Commit	Line	Data
bd371182 AL	1	// Regression test for issue #22779. An extra where clause was
	2	// permitted on the impl that is not present on the trait.
	3
	4	trait Tr<'a, T> {
	5	fn renew<'b: 'a>(self) -> &'b mut [T];
	6	}
	7
	8	impl<'a, T> Tr<'a, T> for &'a mut [T] {
	9	fn renew<'b: 'a>(self) -> &'b mut [T] where 'a: 'b {
c30ab7b3	10	//~^ ERROR E0276
bd371182 AL	11	&mut self[..]
	12	}
	13	}
	14
	15	fn main() { }