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// Test that we are imposing the requirement that every associated
// type of a bound that appears in the where clause on a struct must
// outlive the location in which the type appears, even when the
// associted type is in a supertype. Issue #22246.
#![allow(dead_code)]
pub trait TheTrait {
type TheAssocType;
}
pub trait TheSubTrait : TheTrait {
}
pub struct TheType<'b> {
m: [fn(&'b()); 0]
}
impl<'b> TheTrait for TheType<'b> {
type TheAssocType = &'b ();
}
impl<'b> TheSubTrait for TheType<'b> {
}
pub struct WithAssoc<T:TheSubTrait> {
m: [T; 0]
}
fn with_assoc<'a,'b>() {
// For this type to be valid, the rules require that all
// associated types of traits that appear in `WithAssoc` must
// outlive 'a. In this case, that means TheType<'b>::TheAssocType,
// which is &'b (), must outlive 'a.
let _: &'a WithAssoc<TheType<'b>> = loop { };
//~^ ERROR lifetime may not live long enough
}
fn main() {
}
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