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// 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 use of const fn without feature gate.
const fn foo() -> usize { 0 } //~ ERROR const fn is unstable
trait Foo {
const fn foo() -> u32; //~ ERROR const fn is unstable
const fn bar() -> u32 { 0 } //~ ERROR const fn is unstable
}
impl Foo {
const fn baz() -> u32 { 0 } //~ ERROR const fn is unstable
}
impl Foo for u32 {
const fn foo() -> u32 { 0 } //~ ERROR const fn is unstable
}
static FOO: usize = foo();
const BAR: usize = foo();
macro_rules! constant {
($n:ident: $t:ty = $v:expr) => {
const $n: $t = $v;
}
}
constant! {
BAZ: usize = foo()
}
fn main() {
let x: [usize; foo()] = [];
}
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