mirror of https://github.com/rust-lang/rust
117 lines
2.7 KiB
Rust
117 lines
2.7 KiB
Rust
struct A { a: isize, b: Box<isize> }
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fn deref_after_move() {
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let x = A { a: 1, b: Box::new(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 deref_after_fu_move() {
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let x = A { a: 1, b: Box::new(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 borrow_after_move() {
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let x = A { a: 1, b: Box::new(2) };
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drop(x.b);
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let p = &x.b; //~ ERROR borrow 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::new(2) };
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let _y = A { a: 3, .. x };
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let p = &x.b; //~ ERROR borrow 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::new(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::new(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::new(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::new(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::new(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::new(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::new(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; //~ ERROR E0381
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drop(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; //~ ERROR E0381
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let p = &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::new(1); //~ ERROR E0381
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drop(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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