rust-clippy/tests/ui/crashes/ice-8821.rs

#![warn(clippy::let_unit_value)]

fn f() {}
static FN: fn() = f;

fn main() {
    let _: () = FN();
    //~^ ERROR: this let-binding has unit value
    //~| NOTE: `-D clippy::let-unit-value` implied by `-D warnings`
}