| // 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. |
| |
| // This is the first test that checks moving into local variables. |
| |
| #![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_move_field_to_local(p: Pair<D, D>) { |
| //~^ ERROR parent_of_fragments: `$(local p)` |
| //~| ERROR moved_leaf_path: `$(local p).x` |
| //~| ERROR unmoved_fragment: `$(local p).y` |
| //~| ERROR assigned_leaf_path: `$(local _x)` |
| let _x = p.x; |
| } |
| |
| #[rustc_move_fragments] |
| pub fn test_move_field_to_local_to_local(p: Pair<D, D>) { |
| //~^ ERROR parent_of_fragments: `$(local p)` |
| //~| ERROR moved_leaf_path: `$(local p).x` |
| //~| ERROR unmoved_fragment: `$(local p).y` |
| //~| ERROR assigned_leaf_path: `$(local _x)` |
| //~| ERROR moved_leaf_path: `$(local _x)` |
| //~| ERROR assigned_leaf_path: `$(local _y)` |
| let _x = p.x; |
| let _y = _x; |
| } |
| |
| // In the following fn's `test_move_field_to_local_delayed` and |
| // `test_uninitialized_local` , the instrumentation reports that `_x` |
| // is moved. This is unlike `test_move_field_to_local`, where `_x` is |
| // just reported as an assigned_leaf_path. Presumably because this is |
| // how we represent that it did not have an initializing expression at |
| // the binding site. |
| |
| #[rustc_move_fragments] |
| pub fn test_uninitialized_local(_p: Pair<D, D>) { |
| //~^ ERROR assigned_leaf_path: `$(local _p)` |
| //~| ERROR moved_leaf_path: `$(local _x)` |
| let _x: D; |
| } |
| |
| #[rustc_move_fragments] |
| pub fn test_move_field_to_local_delayed(p: Pair<D, D>) { |
| //~^ ERROR parent_of_fragments: `$(local p)` |
| //~| ERROR moved_leaf_path: `$(local p).x` |
| //~| ERROR unmoved_fragment: `$(local p).y` |
| //~| ERROR assigned_leaf_path: `$(local _x)` |
| //~| ERROR moved_leaf_path: `$(local _x)` |
| let _x; |
| _x = p.x; |
| } |
| |
| #[rustc_move_fragments] |
| pub fn test_move_field_mut_to_local(mut p: Pair<D, D>) { |
| //~^ ERROR parent_of_fragments: `$(local mut p)` |
| //~| ERROR moved_leaf_path: `$(local mut p).x` |
| //~| ERROR unmoved_fragment: `$(local mut p).y` |
| //~| ERROR assigned_leaf_path: `$(local _x)` |
| let _x = p.x; |
| } |
| |
| #[rustc_move_fragments] |
| pub fn test_move_field_to_local_to_local_mut(p: Pair<D, D>) { |
| //~^ ERROR parent_of_fragments: `$(local p)` |
| //~| ERROR moved_leaf_path: `$(local p).x` |
| //~| ERROR unmoved_fragment: `$(local p).y` |
| //~| ERROR assigned_leaf_path: `$(local mut _x)` |
| //~| ERROR moved_leaf_path: `$(local mut _x)` |
| //~| ERROR assigned_leaf_path: `$(local _y)` |
| let mut _x = p.x; |
| let _y = _x; |
| } |
| |
| pub fn main() {} |