1 // Test that if a struct declares multiple region bounds for a given
2 // type parameter, an explicit lifetime bound is required on object
11 struct Ref0<T:?Sized> {
15 struct Ref1<'a,T:'a+?Sized> {
19 struct Ref2<'a,'b:'a,T:'a+'b+?Sized> {
23 fn a<'a,'b>(t: Ref2<'a,'b, dyn Test>) {
24 //~^ ERROR lifetime bound for this object type cannot be deduced from context
27 fn b(t: Ref2<dyn Test>) {
28 //~^ ERROR lifetime bound for this object type cannot be deduced from context
31 fn c(t: Ref2<&dyn Test>) {
32 // In this case, the &'a overrides.
35 fn d(t: Ref2<Ref1<dyn Test>>) {
36 // In this case, the lifetime parameter from the Ref1 overrides.
39 fn e(t: Ref2<Ref0<dyn Test>>) {
40 // In this case, Ref2 is ambiguous, but Ref0 overrides with 'static.
43 fn f(t: &Ref2<dyn Test>) {
44 //~^ ERROR lifetime bound for this object type cannot be deduced from context