f0b8e13b59
For macros that are implemented on the compiler, we do *not* mention the `-Zmacro-backtrace` flag. This includes `derive`s and standard macros.
58 lines
2.2 KiB
Plaintext
58 lines
2.2 KiB
Plaintext
error[E0507]: cannot move out of `self` which is behind a shared reference
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--> $DIR/deriving-with-repr-packed.rs:22:10
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LL | #[derive(Debug, Default)]
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| ----- in this derive macro expansion
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LL | #[repr(packed)]
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LL | struct X(Y);
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| ^ move occurs because `self.0` has type `Y`, which does not implement the `Copy` trait
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note: if `Y` implemented `Clone`, you could clone the value
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--> $DIR/deriving-with-repr-packed.rs:16:1
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LL | struct Y(usize);
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| ^^^^^^^^ consider implementing `Clone` for this type
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...
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LL | struct X(Y);
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| - you could clone this value
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= note: `#[derive(Debug)]` triggers a move because taking references to the fields of a packed struct is undefined behaviour
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error[E0161]: cannot move a value of type `[u8]`
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--> $DIR/deriving-with-repr-packed.rs:29:5
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LL | data: [u8],
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| ^^^^^^^^^^ the size of `[u8]` cannot be statically determined
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error[E0507]: cannot move out of `self.data` which is behind a shared reference
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--> $DIR/deriving-with-repr-packed.rs:29:5
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LL | #[derive(Debug)]
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| ----- in this derive macro expansion
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...
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LL | data: [u8],
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| ^^^^^^^^^^ move occurs because `self.data` has type `[u8]`, which does not implement the `Copy` trait
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= note: `#[derive(Debug)]` triggers a move because taking references to the fields of a packed struct is undefined behaviour
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error[E0161]: cannot move a value of type `str`
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--> $DIR/deriving-with-repr-packed.rs:38:5
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LL | data: str,
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| ^^^^^^^^^ the size of `str` cannot be statically determined
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error[E0507]: cannot move out of `self.data` which is behind a shared reference
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--> $DIR/deriving-with-repr-packed.rs:38:5
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LL | #[derive(Debug)]
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| ----- in this derive macro expansion
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...
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LL | data: str,
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| ^^^^^^^^^ move occurs because `self.data` has type `str`, which does not implement the `Copy` trait
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= note: `#[derive(Debug)]` triggers a move because taking references to the fields of a packed struct is undefined behaviour
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error: aborting due to 5 previous errors
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Some errors have detailed explanations: E0161, E0507.
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For more information about an error, try `rustc --explain E0161`.
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