// Copyright 2015 The Rust Project Developers. See the COPYRIGHT // file at the top-level directory of this distribution and at // http://rust-lang.org/COPYRIGHT. // // Licensed under the Apache License, Version 2.0 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. // A quick test of 'unsafe const fn' functionality #![feature(const_fn)] const unsafe fn dummy(v: u32) -> u32 { !v } const VAL: u32 = dummy(0xFFFF); //~^ ERROR E0133 //~| NOTE call to unsafe function fn main() { assert_eq!(VAL, 0xFFFF0000); }