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|
error: reference to packed field is unaligned
--> $DIR/unaligned_references_external_macro.rs:5:1
|
LL | / unaligned_references_external_crate::mac! {
LL | |
LL | | #[repr(packed)]
LL | | pub struct X {
LL | | pub field: u16
LL | | }
LL | | }
| |_^
|
= 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 #82523 <https://github.com/rust-lang/rust/issues/82523>
= note: fields of packed structs are not properly aligned, and creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
= help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)
note: the lint level is defined here
--> $DIR/unaligned_references_external_macro.rs:5:1
|
LL | / unaligned_references_external_crate::mac! {
LL | |
LL | | #[repr(packed)]
LL | | pub struct X {
LL | | pub field: u16
LL | | }
LL | | }
| |_^
= note: this error originates in the macro `unaligned_references_external_crate::mac` (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to previous error
Future incompatibility report: Future breakage diagnostic:
error: reference to packed field is unaligned
--> $DIR/unaligned_references_external_macro.rs:5:1
|
LL | / unaligned_references_external_crate::mac! {
LL | |
LL | | #[repr(packed)]
LL | | pub struct X {
LL | | pub field: u16
LL | | }
LL | | }
| |_^
|
= 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 #82523 <https://github.com/rust-lang/rust/issues/82523>
= note: fields of packed structs are not properly aligned, and creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
= help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)
note: the lint level is defined here
--> $DIR/unaligned_references_external_macro.rs:5:1
|
LL | / unaligned_references_external_crate::mac! {
LL | |
LL | | #[repr(packed)]
LL | | pub struct X {
LL | | pub field: u16
LL | | }
LL | | }
| |_^
= note: this error originates in the macro `unaligned_references_external_crate::mac` (in Nightly builds, run with -Z macro-backtrace for more info)
|
