50 lines
1.8 KiB
Rust
50 lines
1.8 KiB
Rust
// Copyright 2014-2015 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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// This checks the handling of `_` within variants, especially when mixed
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// with bindings.
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#![feature(rustc_attrs)]
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use self::Lonely::{Zero, One, Two};
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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 enum Lonely<X,Y> { Zero, One(X), Two(X, Y) }
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#[rustc_move_fragments]
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pub fn test_match_bind_and_underscore(p: Lonely<D, D>) {
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//~^ ERROR parent_of_fragments: `$(local p)`
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//~| ERROR assigned_leaf_path: `($(local p) as Lonely::Zero)`
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//~| ERROR assigned_leaf_path: `($(local p) as Lonely::One)`
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//~| ERROR parent_of_fragments: `($(local p) as Lonely::Two)`
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//~| ERROR moved_leaf_path: `($(local p) as Lonely::Two).#0`
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//~| ERROR unmoved_fragment: `($(local p) as Lonely::Two).#1`
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//~| ERROR assigned_leaf_path: `$(local left)`
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match p {
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Zero => {}
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One(_) => {} // <-- does not fragment `($(local p) as One)` ...
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Two(left, _) => {} // <-- ... *does* fragment `($(local p) as Two)`.
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}
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}
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pub fn main() { }
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