src/test/ui/issue-22370.stderr


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error[E0393]: the type parameter `T` must be explicitly specified
  --> $DIR/issue-22370.rs:15:10
   |
15 | fn f(a: &A) {}
   |          ^ missing reference to `T`
   |
   = note: because of the default `Self` reference, type parameters must be specified on object types

error: aborting due to previous error