| error[E0277]: the trait bound `extern "C" fn() {f}: std::ops::Fn<()>` is not satisfied | |
| --> $DIR/extern-wrong-value-type.rs:19:5 | |
| | | |
| LL | is_fn(f); | |
| | ^^^^^ the trait `std::ops::Fn<()>` is not implemented for `extern "C" fn() {f}` | |
| | | |
| note: required by `is_fn` | |
| --> $DIR/extern-wrong-value-type.rs:14:1 | |
| | | |
| LL | fn is_fn<F>(_: F) where F: Fn() {} | |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0277`. |