mirror of https://github.com/rust-lang/rust
40 lines
1.4 KiB
Plaintext
40 lines
1.4 KiB
Plaintext
error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union
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--> $DIR/union-with-drop-fields.rs:8:5
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LL | a: String,
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| ^^^^^^^^^
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= note: union fields must not have drop side-effects, which is currently enforced via either `Copy` or `ManuallyDrop<...>`
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help: wrap the field type in `ManuallyDrop<...>`
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LL | a: std::mem::ManuallyDrop<String>,
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| +++++++++++++++++++++++ +
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error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union
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--> $DIR/union-with-drop-fields.rs:16:5
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LL | a: S,
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| ^^^^
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= note: union fields must not have drop side-effects, which is currently enforced via either `Copy` or `ManuallyDrop<...>`
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help: wrap the field type in `ManuallyDrop<...>`
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LL | a: std::mem::ManuallyDrop<S>,
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| +++++++++++++++++++++++ +
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error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union
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--> $DIR/union-with-drop-fields.rs:21:5
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LL | a: T,
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| ^^^^
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= note: union fields must not have drop side-effects, which is currently enforced via either `Copy` or `ManuallyDrop<...>`
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help: wrap the field type in `ManuallyDrop<...>`
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LL | a: std::mem::ManuallyDrop<T>,
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| +++++++++++++++++++++++ +
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error: aborting due to 3 previous errors
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For more information about this error, try `rustc --explain E0740`.
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