rust/tests/ui/derives/deriving-with-repr-packed.stderr
2023-01-31 20:28:11 +01:00

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warning: byte slice in a packed struct that derives a built-in trait
--> $DIR/deriving-with-repr-packed.rs:31:5
|
LL | #[derive(Debug)]
| ----- in this derive macro expansion
...
LL | data: [u8],
| ^^^^^^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #107457 <https://github.com/rust-lang/rust/issues/107457>
= help: consider implementing the trait by hand, or remove the `packed` attribute
= note: `#[warn(byte_slice_in_packed_struct_with_derive)]` on by default
= note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0507]: cannot move out of `self` which is behind a shared reference
--> $DIR/deriving-with-repr-packed.rs:22:10
|
LL | #[derive(Debug, Default)]
| ----- in this derive macro expansion
LL | #[repr(packed)]
LL | struct X(Y);
| ^ move occurs because `self.0` has type `Y`, which does not implement the `Copy` trait
|
= note: this error originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to previous error; 1 warning emitted
For more information about this error, try `rustc --explain E0507`.
Future incompatibility report: Future breakage diagnostic:
warning: byte slice in a packed struct that derives a built-in trait
--> $DIR/deriving-with-repr-packed.rs:31:5
|
LL | #[derive(Debug)]
| ----- in this derive macro expansion
...
LL | data: [u8],
| ^^^^^^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #107457 <https://github.com/rust-lang/rust/issues/107457>
= help: consider implementing the trait by hand, or remove the `packed` attribute
= note: `#[warn(byte_slice_in_packed_struct_with_derive)]` on by default
= note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)