error[E0793]: reference to packed field is unaligned --> $DIR/issue-53114-safety-checks.rs:23:13 | LL | let _ = &p.b; | ^^^^ | = note: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses = note: 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[E0793]: reference to packed field is unaligned --> $DIR/issue-53114-safety-checks.rs:28:17 | LL | let (_,) = (&p.b,); | ^^^^ | = note: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses = note: 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[E0793]: reference to packed field is unaligned --> $DIR/issue-53114-safety-checks.rs:37:16 | LL | let _: _ = &p.b; | ^^^^ | = note: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses = note: 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[E0793]: reference to packed field is unaligned --> $DIR/issue-53114-safety-checks.rs:42:20 | LL | let (_,): _ = (&p.b,); | ^^^^ | = note: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses = note: 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[E0793]: reference to packed field is unaligned --> $DIR/issue-53114-safety-checks.rs:51:11 | LL | match &p.b { _ => { } } | ^^^^ | = note: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses = note: 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[E0793]: reference to packed field is unaligned --> $DIR/issue-53114-safety-checks.rs:56:12 | LL | match (&p.b,) { (_,) => { } } | ^^^^ | = note: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses = note: 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:24:13 | 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:25:13 | 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:29:17 | 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:30:17 | 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:38:16 | 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:39:16 | 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:43:20 | 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:44:20 | 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:52:11 | 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:53:11 | 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:57:12 | 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:58:12 | 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 18 previous errors Some errors have detailed explanations: E0133, E0793. For more information about an error, try `rustc --explain E0133`.