| // Copyright 2012 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. |
| |
| struct Rec { |
| f: isize |
| } |
| |
| fn f(p: *const Rec) -> isize { |
| |
| // Test that * ptrs do not autoderef. There is a deeper reason for |
| // prohibiting this, beyond making unsafe things annoying (which doesn't |
| // actually seem desirable to me). The deeper reason is that if you |
| // have a type like: |
| // |
| // enum foo = *foo; |
| // |
| // you end up with an infinite auto-deref chain, which is |
| // currently impossible (in all other cases, infinite auto-derefs |
| // are prohibited by various checks, such as that the enum is |
| // instantiable and so forth). |
| |
| return p.f; //~ ERROR attempted access of field `f` on type `*const Rec` |
| } |
| |
| fn main() { |
| } |