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// Check that method bounds declared on traits/impls in a cross-crate
// scenario work. This is the library portion of the test.
pub enum MaybeOwned<'a> {
Owned(isize),
Borrowed(&'a isize)
}
pub struct Inv<'a> { // invariant w/r/t 'a
x: &'a mut &'a isize
}
// I encountered a bug at some point with encoding the IntoMaybeOwned
// trait, so I'll use that as the template for this test.
pub trait IntoMaybeOwned<'a> {
fn into_maybe_owned(self) -> MaybeOwned<'a>;
// Note: without this `into_inv` method, the trait is
// contravariant w/r/t `'a`, since if you look strictly at the
// interface, it only returns `'a`. This complicates the
// downstream test since it wants invariance to force an error.
// Hence we add this method.
fn into_inv(self) -> Inv<'a>;
fn bigger_region<'b:'a>(self, b: Inv<'b>);
}
impl<'a> IntoMaybeOwned<'a> for Inv<'a> {
fn into_maybe_owned(self) -> MaybeOwned<'a> { panic!() }
fn into_inv(self) -> Inv<'a> { panic!() }
fn bigger_region<'b:'a>(self, b: Inv<'b>) { panic!() }
}
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