error: this union has the default representation --> $DIR/default_union_representation.rs:4:1 | LL | / union NoAttribute { LL | | a: i32, LL | | b: u32, LL | | } | |_^ | = help: consider annotating `NoAttribute` with `#[repr(C)]` to explicitly specify memory layout = note: `-D clippy::default-union-representation` implied by `-D warnings` error: this union has the default representation --> $DIR/default_union_representation.rs:16:1 | LL | / union ReprPacked { LL | | a: i32, LL | | b: u32, LL | | } | |_^ | = help: consider annotating `ReprPacked` with `#[repr(C)]` to explicitly specify memory layout error: this union has the default representation --> $DIR/default_union_representation.rs:34:1 | LL | / union ReprAlign { LL | | a: i32, LL | | b: u32, LL | | } | |_^ | = help: consider annotating `ReprAlign` with `#[repr(C)]` to explicitly specify memory layout error: this union has the default representation --> $DIR/default_union_representation.rs:54:1 | LL | / union ZSTAndTwoFields { LL | | f0: u32, LL | | f1: u64, LL | | f2: (), LL | | } | |_^ | = help: consider annotating `ZSTAndTwoFields` with `#[repr(C)]` to explicitly specify memory layout error: aborting due to 4 previous errors