error[E0093]: unrecognized intrinsic function: `foo`
  --> $DIR/E0093.rs:3:5
   |
LL |     fn foo();
   |     ^^^^^^^^^ unrecognized intrinsic
   |
   = help: if you're adding an intrinsic, be sure to update `check_intrinsic_type`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0093`.