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Add tests of move-into-dead-array restriction.

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This commit is contained in:
Felix S. Klock II 2015-02-03 18:10:56 +01:00
parent ce341f79b4
commit 128ac9dfcb
2 changed files with 50 additions and 0 deletions
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src/test/compile-fail/move-into-dead-array-1.rs Normal file
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// Copyright 2015 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.
// Ensure that we cannot move into an uninitialized fixed-size array.
struct D { _x: u8 }
fn d() -> D { D { _x: 0 } }
fn main() {
foo(1);
foo(3);
}
fn foo(i: usize) {
let mut a: [D; 4];
a[i] = d(); //~ ERROR use of possibly uninitialized variable: `a`
}

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src/test/compile-fail/move-into-dead-array-2.rs Normal file
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// Copyright 2015 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.
// Ensure that we cannot move into an uninitialized fixed-size array.
struct D { _x: u8 }
fn d() -> D { D { _x: 0 } }
fn main() {
foo([d(), d(), d(), d()], 1);
foo([d(), d(), d(), d()], 3);
}
fn foo(mut a: [D; 4], i: usize) {
drop(a);
a[i] = d(); //~ ERROR use of moved value: `a`
}