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|
// 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() {}
|
