49 lines
1.9 KiB
Rust
49 lines
1.9 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Test that we correctly compute the move fragments for a fn.
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//
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// Note that the code below is not actually incorrect; the
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// `rustc_move_fragments` attribute is a hack that uses the error
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// reporting mechanisms as a channel for communicating from the
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// internals of the compiler.
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// Test that moving a Box<T> fragments its containing structure, for
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// both moving out of the structure (i.e. reading `*p.x`) and writing
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// into the container (i.e. writing `*p.x`).
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#![feature(rustc_attrs)]
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pub struct D { d: isize }
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impl Drop for D { fn drop(&mut self) { } }
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pub struct Pair<X,Y> { x: X, y: Y }
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#[rustc_move_fragments]
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pub fn test_deref_box_field(p: Pair<Box<D>, Box<D>>) {
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//~^ ERROR parent_of_fragments: `$(local p)`
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//~| ERROR parent_of_fragments: `$(local p).x`
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//~| ERROR moved_leaf_path: `$(local p).x.*`
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//~| ERROR unmoved_fragment: `$(local p).y`
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//~| ERROR assigned_leaf_path: `$(local i)`
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let i : D = *p.x;
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}
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#[rustc_move_fragments]
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pub fn test_overwrite_deref_box_field(mut p: Pair<Box<D>, Box<D>>) {
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//~^ ERROR parent_of_fragments: `$(local mut p)`
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//~| ERROR parent_of_fragments: `$(local mut p).x`
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//~| ERROR assigned_leaf_path: `$(local mut p).x.*`
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//~| ERROR unmoved_fragment: `$(local mut p).y`
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*p.x = D { d: 3 };
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}
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pub fn main() { }
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