| //@ run-rustfix |
| use std::ops::Deref; |
| |
| trait Happy {} |
| struct LDM; |
| impl Happy for &LDM {} |
| |
| struct Foo(LDM); |
| struct Bar(Foo); |
| struct Baz(Bar); |
| impl Deref for Foo { |
| type Target = LDM; |
| fn deref(&self) -> &Self::Target { |
| &self.0 |
| } |
| } |
| impl Deref for Bar { |
| type Target = Foo; |
| fn deref(&self) -> &Self::Target { |
| &self.0 |
| } |
| } |
| impl Deref for Baz { |
| type Target = Bar; |
| fn deref(&self) -> &Self::Target { |
| &self.0 |
| } |
| } |
| |
| fn foo<T>(_: T) where T: Happy {} |
| |
| fn main() { |
| let baz = Baz(Bar(Foo(LDM))); |
| foo(&***baz); |
| //~^ ERROR the trait bound `&Baz: Happy` is not satisfied |
| } |
