mirror of https://github.com/rust-lang/rust
64 lines
2.4 KiB
Plaintext
64 lines
2.4 KiB
Plaintext
error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union
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--> $DIR/field_checks.rs:24:5
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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/field_checks.rs:28:5
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LL | a: std::cell::RefCell<i32>,
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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<std::cell::RefCell<i32>>,
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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/field_checks.rs:32:5
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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[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union
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--> $DIR/field_checks.rs:44:5
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LL | nest: U5,
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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 | nest: std::mem::ManuallyDrop<U5>,
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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/field_checks.rs:48:5
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LL | nest: [U5; 0],
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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 | nest: std::mem::ManuallyDrop<[U5; 0]>,
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| +++++++++++++++++++++++ +
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error: aborting due to 5 previous errors
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For more information about this error, try `rustc --explain E0740`.
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