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// Test that we can derive lifetime bounds on `Self` from trait
// inheritance.
trait Static : 'static { }
trait Is<'a> : 'a { }
struct Inv<'a> {
x: Option<&'a mut &'a isize>
}
fn check_bound<'a,A:'a>(x: Inv<'a>, a: A) { }
// In these case, `Self` inherits `'static`.
trait InheritsFromStatic : Sized + 'static {
fn foo1<'a>(self, x: Inv<'a>) {
check_bound(x, self)
}
}
trait InheritsFromStaticIndirectly : Sized + Static {
fn foo1<'a>(self, x: Inv<'a>) {
check_bound(x, self)
}
}
// In these case, `Self` inherits `'a`.
trait InheritsFromIs<'a> : Sized + 'a {
fn foo(self, x: Inv<'a>) {
check_bound(x, self)
}
}
trait InheritsFromIsIndirectly<'a> : Sized + Is<'a> {
fn foo(self, x: Inv<'a>) {
check_bound(x, self)
}
}
// In this case, `Self` inherits nothing.
trait InheritsFromNothing<'a> : Sized {
fn foo(self, x: Inv<'a>) {
check_bound(x, self)
//~^ ERROR parameter type `Self` may not live long enough
}
}
fn main() { }
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