File: issue-118048.stderr

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error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
  --> $DIR/issue-118048.rs:7:6
   |
LL | foo!(_);
   |      ^
   |      |
   |      not allowed in type signatures
   |      not allowed in type signatures
   |
help: use type parameters instead
   |
LL ~         fn foo<T>(_: $ty, _: $ty) {}
LL |     }
LL | }
LL | 
LL ~ foo!(T);
   |

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0121`.