mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-01 06:51:58 +00:00
36 lines
2.0 KiB
Plaintext
36 lines
2.0 KiB
Plaintext
warning: reference to packed field is unaligned
|
|
--> $DIR/packed-struct-borrow-element-64bit.rs:15:15
|
|
|
|
|
LL | let brw = &foo.baz;
|
|
| ^^^^^^^^
|
|
|
|
|
= 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/packed-struct-borrow-element-64bit.rs:12:8
|
|
|
|
|
LL | #[warn(unaligned_references)]
|
|
| ^^^^^^^^^^^^^^^^^^^^
|
|
|
|
warning: 1 warning emitted
|
|
|
|
Future incompatibility report: Future breakage diagnostic:
|
|
warning: reference to packed field is unaligned
|
|
--> $DIR/packed-struct-borrow-element-64bit.rs:15:15
|
|
|
|
|
LL | let brw = &foo.baz;
|
|
| ^^^^^^^^
|
|
|
|
|
= 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/packed-struct-borrow-element-64bit.rs:12:8
|
|
|
|
|
LL | #[warn(unaligned_references)]
|
|
| ^^^^^^^^^^^^^^^^^^^^
|
|
|