#![feature(closure_to_fn_coercion)] // allow(const_err) to work around a bug in warnings #[allow(const_err)] static FOO: fn() = || { assert_ne!(42, 43) }; #[allow(const_err)] static BAR: fn(i32, i32) = |a, b| { assert_ne!(a, b) }; fn main() { FOO(); BAR(44, 45); let bar: unsafe fn(i32, i32) = BAR; unsafe { bar(46, 47) }; let boo: &Fn(i32, i32) = &BAR; boo(48, 49); }