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|
error[E0382]: use of moved value: `x`
--> $DIR/binop-move-semantics.rs:8:5
|
LL | fn double_move<T: Add<Output=()>>(x: T) {
| - move occurs because `x` has type `T`, which does not implement the `Copy` trait
LL | / x
LL | | +
LL | | x;
| | ^
| | |
| |_____value used here after move
| `x` moved due to usage in operator
|
help: if `T` implemented `Clone`, you could clone the value
--> $DIR/binop-move-semantics.rs:5:16
|
LL | fn double_move<T: Add<Output=()>>(x: T) {
| ^ consider constraining this type parameter with `Clone`
LL | x
| - you could clone this value
note: calling this operator moves the left-hand side
--> $SRC_DIR/core/src/ops/arith.rs:LL:COL
help: consider further restricting type parameter `T` with trait `Copy`
|
LL | fn double_move<T: Add<Output=()> + Copy>(x: T) {
| ++++++
error[E0382]: borrow of moved value: `x`
--> $DIR/binop-move-semantics.rs:14:5
|
LL | fn move_then_borrow<T: Add<Output=()> + Clone>(x: T) {
| - move occurs because `x` has type `T`, which does not implement the `Copy` trait
LL | x
| - value moved here
LL | +
LL | x.clone();
| ^ value borrowed here after move
|
help: consider cloning the value if the performance cost is acceptable
|
LL | x.clone()
| ++++++++
help: consider further restricting type parameter `T` with trait `Copy`
|
LL | fn move_then_borrow<T: Add<Output=()> + Clone + Copy>(x: T) {
| ++++++
error[E0505]: cannot move out of `x` because it is borrowed
--> $DIR/binop-move-semantics.rs:21:5
|
LL | fn move_borrowed<T: Add<Output=()>>(x: T, mut y: T) {
| - binding `x` declared here
LL | let m = &x;
| -- borrow of `x` occurs here
...
LL | x
| ^ move out of `x` occurs here
...
LL | use_mut(n); use_imm(m);
| - borrow later used here
|
help: if `T` implemented `Clone`, you could clone the value
--> $DIR/binop-move-semantics.rs:17:18
|
LL | fn move_borrowed<T: Add<Output=()>>(x: T, mut y: T) {
| ^ consider constraining this type parameter with `Clone`
LL | let m = &x;
| - you could clone this value
error[E0505]: cannot move out of `y` because it is borrowed
--> $DIR/binop-move-semantics.rs:23:5
|
LL | fn move_borrowed<T: Add<Output=()>>(x: T, mut y: T) {
| ----- binding `y` declared here
LL | let m = &x;
LL | let n = &mut y;
| ------ borrow of `y` occurs here
...
LL | y;
| ^ move out of `y` occurs here
LL | use_mut(n); use_imm(m);
| - borrow later used here
|
help: if `T` implemented `Clone`, you could clone the value
--> $DIR/binop-move-semantics.rs:17:18
|
LL | fn move_borrowed<T: Add<Output=()>>(x: T, mut y: T) {
| ^ consider constraining this type parameter with `Clone`
LL | let m = &x;
LL | let n = &mut y;
| - you could clone this value
error[E0507]: cannot move out of `*m` which is behind a mutable reference
--> $DIR/binop-move-semantics.rs:30:5
|
LL | *m
| -^
| |
| _____move occurs because `*m` has type `T`, which does not implement the `Copy` trait
| |
LL | | +
LL | | *n;
| |______- `*m` moved due to usage in operator
|
note: calling this operator moves the left-hand side
--> $SRC_DIR/core/src/ops/arith.rs:LL:COL
help: if `T` implemented `Clone`, you could clone the value
--> $DIR/binop-move-semantics.rs:26:24
|
LL | fn illegal_dereference<T: Add<Output=()>>(mut x: T, y: T) {
| ^ consider constraining this type parameter with `Clone`
...
LL | *m
| -- you could clone this value
error[E0507]: cannot move out of `*n` which is behind a shared reference
--> $DIR/binop-move-semantics.rs:32:5
|
LL | *n;
| ^^ move occurs because `*n` has type `T`, which does not implement the `Copy` trait
|
help: if `T` implemented `Clone`, you could clone the value
--> $DIR/binop-move-semantics.rs:26:24
|
LL | fn illegal_dereference<T: Add<Output=()>>(mut x: T, y: T) {
| ^ consider constraining this type parameter with `Clone`
...
LL | *n;
| -- you could clone this value
error[E0502]: cannot borrow `f` as immutable because it is also borrowed as mutable
--> $DIR/binop-move-semantics.rs:54:5
|
LL | &mut f
| ------
| |
| _____mutable borrow occurs here
| |
LL | | +
LL | | &f;
| | ^-
| |_____||
| |mutable borrow later used here
| immutable borrow occurs here
error[E0502]: cannot borrow `f` as mutable because it is also borrowed as immutable
--> $DIR/binop-move-semantics.rs:62:5
|
LL | &f
| --
| |
| _____immutable borrow occurs here
| |
LL | | +
LL | | &mut f;
| | ^^^^^-
| |_____|____|
| | immutable borrow later used here
| mutable borrow occurs here
error: aborting due to 8 previous errors
Some errors have detailed explanations: E0382, E0502, E0505, E0507.
For more information about an error, try `rustc --explain E0382`.
|
