60 lines
2.2 KiB
Rust
60 lines
2.2 KiB
Rust
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// 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 into a field (i.e. overwriting it) fragments the
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// receiver.
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use std::mem::drop;
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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_overwrite_uninit_field<Z>(z: Z) {
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//~^ ERROR parent_of_fragments: `$(local mut p)`
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//~| ERROR assigned_leaf_path: `$(local z)`
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//~| ERROR moved_leaf_path: `$(local z)`
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//~| ERROR assigned_leaf_path: `$(local mut p).x`
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//~| ERROR unmoved_fragment: `$(local mut p).y`
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let mut p: Pair<Z,Z>;
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p.x = z;
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}
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#[rustc_move_fragments]
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pub fn test_overwrite_moved_field<Z>(mut p: Pair<Z,Z>, z: Z) {
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//~^ ERROR parent_of_fragments: `$(local mut p)`
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//~| ERROR assigned_leaf_path: `$(local z)`
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//~| ERROR moved_leaf_path: `$(local z)`
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//~| ERROR assigned_leaf_path: `$(local mut p).y`
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//~| ERROR unmoved_fragment: `$(local mut p).x`
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drop(p);
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p.y = z;
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}
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#[rustc_move_fragments]
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pub fn test_overwrite_same_field<Z>(mut p: Pair<Z,Z>) {
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//~^ ERROR parent_of_fragments: `$(local mut p)`
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//~| ERROR moved_leaf_path: `$(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 = p.x;
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}
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pub fn main() { }
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