error[E0044]: foreign items may not have type parameters
  --> $DIR/E0044.rs:11:10
   |
LL | extern { fn some_func<T>(x: T); } //~ ERROR E0044
   |          ^^^^^^^^^^^^^^^^^^^^^^
   |
help: consider using specialization instead of type parameters
  --> $DIR/E0044.rs:11:10
   |
LL | extern { fn some_func<T>(x: T); } //~ ERROR E0044
   |          ^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to previous error

If you want more information on this error, try using "rustc --explain E0044"