// Copyright 2013-2014 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. // Check that safe fns are not a subtype of unsafe fns. trait Foo { unsafe fn len(&self) -> u32; } impl Foo for u32 { fn len(&self) -> u32 { *self } //~^ ERROR method `len` has an incompatible type for trait //~| expected type `unsafe fn(&u32) -> u32` //~| found type `fn(&u32) -> u32` } fn main() { }