| // 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 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // test that certain things are disallowed in constant functions |
| |
| #![feature(const_fn)] |
| |
| // no destructuring |
| const fn i(( |
| a, |
| //~^ ERROR arguments of constant functions can only be immutable by-value bindings |
| b |
| //~^ ERROR arguments of constant functions can only be immutable by-value bindings |
| ): (u32, u32)) -> u32 { |
| a + b |
| //~^ ERROR let bindings in constant functions are unstable |
| //~| ERROR let bindings in constant functions are unstable |
| } |
| |
| fn main() {} |
