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78d29ad8d6
Sometimes move errors are because of a misplaced `continue`, but we didn't
surface that anywhere. Now when there are more than one set of nested loops
we show them out and point at the `continue` and `break` expressions within
that might need to go elsewhere.
```
error[E0382]: use of moved value: `foo`
--> $DIR/nested-loop-moved-value-wrong-continue.rs:46:18
|
LL | for foo in foos {
| ---
| |
| this reinitialization might get skipped
| move occurs because `foo` has type `String`, which does not implement the `Copy` trait
...
LL | for bar in &bars {
| ---------------- inside of this loop
...
LL | baz.push(foo);
| --- value moved here, in previous iteration of loop
...
LL | qux.push(foo);
| ^^^ value used here after move
|
note: verify that your loop breaking logic is correct
--> $DIR/nested-loop-moved-value-wrong-continue.rs:41:17
|
LL | for foo in foos {
| ---------------
...
LL | for bar in &bars {
| ----------------
...
LL | continue;
| ^^^^^^^^ this `continue` advances the loop at line 33
help: consider moving the expression out of the loop so it is only moved once
|
LL ~ let mut value = baz.push(foo);
LL ~ for bar in &bars {
LL |
...
LL | if foo == *bar {
LL ~ value;
|
help: consider cloning the value if the performance cost is acceptable
|
LL | baz.push(foo.clone());
| ++++++++
```
Fix #92531.
84 lines
2.7 KiB
Plaintext
84 lines
2.7 KiB
Plaintext
error[E0382]: use of moved value: `foo`
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--> $DIR/nested-loop-moved-value-wrong-continue.rs:19:14
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LL | for foo in foos { for bar in &bars { if foo == *bar {
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| --- ---------------- inside of this loop
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| |
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| this reinitialization might get skipped
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| move occurs because `foo` has type `String`, which does not implement the `Copy` trait
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...
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LL | baz.push(foo);
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| --- value moved here, in previous iteration of loop
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...
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LL | qux.push(foo);
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| ^^^ value used here after move
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note: verify that your loop breaking logic is correct
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--> $DIR/nested-loop-moved-value-wrong-continue.rs:15:9
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LL | for foo in foos { for bar in &bars { if foo == *bar {
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| --------------- ----------------
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...
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LL | continue;
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| ^^^^^^^^ this `continue` advances the loop at $DIR/nested-loop-moved-value-wrong-continue.rs:6:23: 18:8
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help: consider moving the expression out of the loop so it is only moved once
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LL ~ for foo in foos { let mut value = baz.push(foo);
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LL ~ for bar in &bars { if foo == *bar {
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LL |
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...
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LL |
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LL ~ value;
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help: consider cloning the value if the performance cost is acceptable
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LL | baz.push(foo.clone());
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| ++++++++
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error[E0382]: use of moved value: `foo`
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--> $DIR/nested-loop-moved-value-wrong-continue.rs:46:18
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LL | for foo in foos {
|
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| ---
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| |
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| this reinitialization might get skipped
|
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| move occurs because `foo` has type `String`, which does not implement the `Copy` trait
|
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...
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LL | for bar in &bars {
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| ---------------- inside of this loop
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...
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LL | baz.push(foo);
|
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| --- value moved here, in previous iteration of loop
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|
...
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LL | qux.push(foo);
|
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| ^^^ value used here after move
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note: verify that your loop breaking logic is correct
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--> $DIR/nested-loop-moved-value-wrong-continue.rs:41:17
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LL | for foo in foos {
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| ---------------
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...
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LL | for bar in &bars {
|
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| ----------------
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...
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LL | continue;
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| ^^^^^^^^ this `continue` advances the loop at line 33
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help: consider moving the expression out of the loop so it is only moved once
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LL ~ let mut value = baz.push(foo);
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LL ~ for bar in &bars {
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LL |
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...
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LL | if foo == *bar {
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LL ~ value;
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help: consider cloning the value if the performance cost is acceptable
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LL | baz.push(foo.clone());
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| ++++++++
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error: aborting due to 2 previous errors
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For more information about this error, try `rustc --explain E0382`.
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