45a1b97764
Currently analyze_move_out_from checks all restrictions on all base paths of the move path, but it only needs to check restrictions from loans of the base paths, and can disregard restrictions from loans of extensions of those base paths.
126 lines
3.2 KiB
Rust
126 lines
3.2 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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struct A { a: int, b: Box<int> }
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fn deref_after_move() {
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let x = A { a: 1, b: box 2 };
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drop(x.b);
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drop(*x.b); //~ ERROR use of partially moved value: `*x.b`
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}
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fn deref_after_fu_move() {
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let x = A { a: 1, b: box 2 };
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let y = A { a: 3, .. x };
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drop(*x.b); //~ ERROR use of partially moved value: `*x.b`
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}
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fn borrow_after_move() {
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let x = A { a: 1, b: box 2 };
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drop(x.b);
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let p = &x.b; //~ ERROR use of moved value: `x.b`
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drop(**p);
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}
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fn borrow_after_fu_move() {
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let x = A { a: 1, b: box 2 };
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let _y = A { a: 3, .. x };
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let p = &x.b; //~ ERROR use of moved value: `x.b`
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drop(**p);
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}
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fn move_after_borrow() {
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let x = A { a: 1, b: box 2 };
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let p = &x.b;
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drop(x.b); //~ ERROR cannot move out of `x.b` because it is borrowed
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drop(**p);
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}
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fn fu_move_after_borrow() {
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let x = A { a: 1, b: box 2 };
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let p = &x.b;
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let _y = A { a: 3, .. x }; //~ ERROR cannot move out of `x.b` because it is borrowed
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drop(**p);
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}
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fn mut_borrow_after_mut_borrow() {
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let mut x = A { a: 1, b: box 2 };
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let p = &mut x.a;
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let q = &mut x.a; //~ ERROR cannot borrow `x.a` as mutable more than once at a time
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drop(*p);
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drop(*q);
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}
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fn move_after_move() {
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let x = A { a: 1, b: box 2 };
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drop(x.b);
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drop(x.b); //~ ERROR use of moved value: `x.b`
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}
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fn move_after_fu_move() {
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let x = A { a: 1, b: box 2 };
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let _y = A { a: 3, .. x };
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drop(x.b); //~ ERROR use of moved value: `x.b`
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}
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fn fu_move_after_move() {
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let x = A { a: 1, b: box 2 };
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drop(x.b);
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let _z = A { a: 3, .. x }; //~ ERROR use of moved value: `x.b`
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}
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fn fu_move_after_fu_move() {
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let x = A { a: 1, b: box 2 };
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let _y = A { a: 3, .. x };
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let _z = A { a: 4, .. x }; //~ ERROR use of moved value: `x.b`
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}
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// The following functions aren't yet accepted, but they should be.
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fn copy_after_field_assign_after_uninit() {
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let mut x: A;
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x.a = 1;
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drop(x.a); //~ ERROR use of possibly uninitialized variable: `x.a`
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}
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fn borrow_after_field_assign_after_uninit() {
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let mut x: A;
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x.a = 1;
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let p = &x.a; //~ ERROR use of possibly uninitialized variable: `x.a`
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drop(*p);
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}
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fn move_after_field_assign_after_uninit() {
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let mut x: A;
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x.b = box 1;
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drop(x.b); //~ ERROR use of possibly uninitialized variable: `x.b`
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}
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fn main() {
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deref_after_move();
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deref_after_fu_move();
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borrow_after_move();
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borrow_after_fu_move();
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move_after_borrow();
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fu_move_after_borrow();
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mut_borrow_after_mut_borrow();
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move_after_move();
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move_after_fu_move();
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fu_move_after_move();
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fu_move_after_fu_move();
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copy_after_field_assign_after_uninit();
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borrow_after_field_assign_after_uninit();
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move_after_field_assign_after_uninit();
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}
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