error[E0312]: lifetime of reference outlives lifetime of borrowed content...
  --> $DIR/ex1-return-one-existing-name-if-else-using-impl.rs:21:20
   |
21 |         if x > y { x } else { y }
   |                    ^
   |
note: ...the reference is valid for the lifetime 'a as defined on the method body at 19:5...
  --> $DIR/ex1-return-one-existing-name-if-else-using-impl.rs:19:5
   |
19 | /     fn foo<'a>(x: &i32, y: &'a i32) -> &'a i32 {
20 | |
21 | |         if x > y { x } else { y }
22 | |
23 | |     }
   | |_____^
note: ...but the borrowed content is only valid for the anonymous lifetime #1 defined on the method body at 19:5
  --> $DIR/ex1-return-one-existing-name-if-else-using-impl.rs:19:5
   |
19 | /     fn foo<'a>(x: &i32, y: &'a i32) -> &'a i32 {
20 | |
21 | |         if x > y { x } else { y }
22 | |
23 | |     }
   | |_____^

error: aborting due to previous error