1 // Test that we are imposing the requirement that every associated
2 // type of a bound that appears in the where clause on a struct must
3 // outlive the location in which the type appears, even when the
4 // associted type is in a supertype. Issue #22246.
8 ///////////////////////////////////////////////////////////////////////////
14 pub trait TheSubTrait : TheTrait {
17 pub struct TheType<'b> {
21 impl<'b> TheTrait for TheType<'b> {
22 type TheAssocType = &'b ();
25 impl<'b> TheSubTrait for TheType<'b> {
28 ///////////////////////////////////////////////////////////////////////////
30 pub struct WithAssoc<T:TheSubTrait> {
34 fn with_assoc<'a,'b>() {
35 // For this type to be valid, the rules require that all
36 // associated types of traits that appear in `WithAssoc` must
37 // outlive 'a. In this case, that means TheType<'b>::TheAssocType,
38 // which is &'b (), must outlive 'a.
40 // FIXME (#54943) NLL doesn't enforce WF condition in unreachable code if
41 // `_x` is changed to `_`
42 let _x: &'a WithAssoc<TheType<'b>> = loop { };
43 //~^ ERROR reference has a longer lifetime