// 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. // 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 } fn main() { }