| // Copyright 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 <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 that we correctly compute the move fragments for a fn. |
| // |
| // Note that the code below is not actually incorrect; the |
| // `rustc_move_fragments` attribute is a hack that uses the error |
| // reporting mechanisms as a channel for communicating from the |
| // internals of the compiler. |
| |
| // Test that moving a Box<T> fragments its containing structure, for |
| // both moving out of the structure (i.e. reading `*p.x`) and writing |
| // into the container (i.e. writing `*p.x`). |
| |
| #![feature(rustc_attrs)] |
| |
| pub struct D { d: isize } |
| impl Drop for D { fn drop(&mut self) { } } |
| |
| pub struct Pair<X,Y> { x: X, y: Y } |
| |
| #[rustc_move_fragments] |
| pub fn test_deref_box_field(p: Pair<Box<D>, Box<D>>) { |
| //~^ ERROR parent_of_fragments: `$(local p)` |
| //~| ERROR parent_of_fragments: `$(local p).x` |
| //~| ERROR moved_leaf_path: `$(local p).x.*` |
| //~| ERROR unmoved_fragment: `$(local p).y` |
| //~| ERROR assigned_leaf_path: `$(local i)` |
| let i : D = *p.x; |
| } |
| |
| #[rustc_move_fragments] |
| pub fn test_overwrite_deref_box_field(mut p: Pair<Box<D>, Box<D>>) { |
| //~^ ERROR parent_of_fragments: `$(local mut p)` |
| //~| ERROR parent_of_fragments: `$(local mut p).x` |
| //~| ERROR assigned_leaf_path: `$(local mut p).x.*` |
| //~| ERROR unmoved_fragment: `$(local mut p).y` |
| *p.x = D { d: 3 }; |
| } |
| |
| pub fn main() { } |
