src/tools/miri/tests/compile-fail/cast_fn_ptr4.rs

fn main() {
    fn f(_ : *const [i32]) {}

    let g = unsafe {
        std::mem::transmute::<fn(*const [i32]), fn(*const i32)>(f)
    };

    g(&42 as *const i32) //~ ERROR tried to call a function with argument of type *const [i32] passing data of type *const i32
}