mirror of https://github.com/rust-lang/rust
65 lines
2.2 KiB
Plaintext
65 lines
2.2 KiB
Plaintext
error[E0277]: the size for values of type `str` cannot be known at compilation time
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--> $DIR/union-unsized.rs:2:8
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LL | a: str,
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| ^^^ doesn't have a size known at compile-time
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= help: the trait `Sized` is not implemented for `str`
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= note: no field of a union may have a dynamically sized type
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= help: change the field's type to have a statically known size
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help: borrowed types always have a statically known size
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LL | a: &str,
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| +
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help: the `Box` type always has a statically known size and allocates its contents in the heap
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LL | a: Box<str>,
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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-unsized.rs:2:5
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LL | a: str,
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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<str>,
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| +++++++++++++++++++++++ +
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error[E0277]: the size for values of type `str` cannot be known at compilation time
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--> $DIR/union-unsized.rs:11:8
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LL | b: str,
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| ^^^ doesn't have a size known at compile-time
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= help: the trait `Sized` is not implemented for `str`
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= note: no field of a union may have a dynamically sized type
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= help: change the field's type to have a statically known size
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help: borrowed types always have a statically known size
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LL | b: &str,
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| +
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help: the `Box` type always has a statically known size and allocates its contents in the heap
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LL | b: Box<str>,
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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-unsized.rs:11:5
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LL | b: str,
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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 | b: std::mem::ManuallyDrop<str>,
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| +++++++++++++++++++++++ +
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error: aborting due to 4 previous errors
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Some errors have detailed explanations: E0277, E0740.
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For more information about an error, try `rustc --explain E0277`.
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