error: reference to packed field is unaligned --> $DIR/issue-53114-safety-checks.rs:23:13 | LL | let _ = &p.b; | ^^^^ | = 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 = 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: `#[deny(unaligned_references)]` on by default error: reference to packed field is unaligned --> $DIR/issue-53114-safety-checks.rs:29:17 | LL | let (_,) = (&p.b,); | ^^^^ | = 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 = 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) error: reference to packed field is unaligned --> $DIR/issue-53114-safety-checks.rs:39:11 | LL | match &p.b { _ => { } } | ^^^^ | = 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 = 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) error: reference to packed field is unaligned --> $DIR/issue-53114-safety-checks.rs:45:12 | LL | match (&p.b,) { (_,) => { } } | ^^^^ | = 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 = 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) error[E0133]: access to union field is unsafe and requires unsafe function or block --> $DIR/issue-53114-safety-checks.rs:26:13 | LL | let _ = &u2.a; | ^^^^^ access to union field | = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior error[E0133]: access to union field is unsafe and requires unsafe function or block --> $DIR/issue-53114-safety-checks.rs:31:17 | LL | let (_,) = (u1.a,); | ^^^^ access to union field | = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior error[E0133]: access to union field is unsafe and requires unsafe function or block --> $DIR/issue-53114-safety-checks.rs:32:17 | LL | let (_,) = (&u2.a,); | ^^^^^ access to union field | = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior error[E0133]: access to union field is unsafe and requires unsafe function or block --> $DIR/issue-53114-safety-checks.rs:41:11 | LL | match u1.a { _ => { } } | ^^^^ access to union field | = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior error[E0133]: access to union field is unsafe and requires unsafe function or block --> $DIR/issue-53114-safety-checks.rs:42:11 | LL | match &u2.a { _ => { } } | ^^^^^ access to union field | = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior error[E0133]: access to union field is unsafe and requires unsafe function or block --> $DIR/issue-53114-safety-checks.rs:47:12 | LL | match (u1.a,) { (_,) => { } } | ^^^^ access to union field | = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior error[E0133]: access to union field is unsafe and requires unsafe function or block --> $DIR/issue-53114-safety-checks.rs:48:12 | LL | match (&u2.a,) { (_,) => { } } | ^^^^^ access to union field | = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior error: aborting due to 11 previous errors For more information about this error, try `rustc --explain E0133`. Future incompatibility report: Future breakage diagnostic: error: reference to packed field is unaligned --> $DIR/issue-53114-safety-checks.rs:23:13 | LL | let _ = &p.b; | ^^^^ | = 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 = 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: `#[deny(unaligned_references)]` on by default Future breakage diagnostic: error: reference to packed field is unaligned --> $DIR/issue-53114-safety-checks.rs:29:17 | LL | let (_,) = (&p.b,); | ^^^^ | = 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 = 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: `#[deny(unaligned_references)]` on by default Future breakage diagnostic: error: reference to packed field is unaligned --> $DIR/issue-53114-safety-checks.rs:39:11 | LL | match &p.b { _ => { } } | ^^^^ | = 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 = 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: `#[deny(unaligned_references)]` on by default Future breakage diagnostic: error: reference to packed field is unaligned --> $DIR/issue-53114-safety-checks.rs:45:12 | LL | match (&p.b,) { (_,) => { } } | ^^^^ | = 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 = 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: `#[deny(unaligned_references)]` on by default