| error[E0277]: expected a `FnOnce(&str)` closure, found `unsafe extern "rust-intrinsic" fn(_) -> _ {std::intrinsics::transmute::<_, _>}` |
| --> $DIR/coerce-unsafe-to-closure.rs:2:44 |
| | |
| LL | let x: Option<&[u8]> = Some("foo").map(std::mem::transmute); |
| | --- ^^^^^^^^^^^^^^^^^^^ call the function in a closure: `|| unsafe { /* code */ }` |
| | | |
| | required by a bound introduced by this call |
| | |
| = help: the trait `FnOnce(&str)` is not implemented for fn item `unsafe extern "rust-intrinsic" fn(_) -> _ {std::intrinsics::transmute::<_, _>}` |
| = note: unsafe function cannot be called generically without an unsafe block |
| note: required by a bound in `Option::<T>::map` |
| --> $SRC_DIR/core/src/option.rs:LL:COL |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0277`. |
