| // Copyright 2018 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. |
| |
| #![unstable(feature = "humans", |
| reason = "who ever let humans program computers, |
| we're apparently really bad at it", |
| issue = "0")] |
| |
| #![feature(rustc_const_unstable, const_fn)] |
| #![feature(staged_api)] |
| |
| #[stable(feature = "rust1", since = "1.0.0")] |
| #[rustc_const_unstable(feature="foo")] |
| const fn foo() -> u32 { 42 } |
| |
| fn meh() -> u32 { 42 } |
| |
| const fn bar() -> u32 { foo() } //~ ERROR `foo` is not yet stable as a const fn |
| |
| fn a() { |
| let _: &'static u32 = &foo(); //~ ERROR does not live long enough |
| } |
| |
| fn main() { |
| let _: &'static u32 = &meh(); //~ ERROR does not live long enough |
| let x: &'static _ = &std::time::Duration::from_millis(42).subsec_millis(); |
| } |