error[E0690]: transparent struct needs at most one non-zero-sized field, but has 2 --> $DIR/repr-transparent.rs:26:1 | LL | struct MultipleNonZst(u8, u8); | ^^^^^^^^^^^^^^^^^^^^^ -- -- this field is non-zero-sized | | | | | this field is non-zero-sized | needs at most one non-zero-sized field, but has 2 error[E0690]: transparent struct needs at most one non-zero-sized field, but has 2 --> $DIR/repr-transparent.rs:32:1 | LL | pub struct StructWithProjection(f32, ::It); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ --- ------------------- this field is non-zero-sized | | | | | this field is non-zero-sized | needs at most one non-zero-sized field, but has 2 error[E0691]: zero-sized field in transparent struct has alignment larger than 1 --> $DIR/repr-transparent.rs:36:32 | LL | struct NontrivialAlignZst(u32, [u16; 0]); | ^^^^^^^^ has alignment of 2, which is larger than 1 error[E0691]: zero-sized field in transparent struct has alignment larger than 1 --> $DIR/repr-transparent.rs:42:24 | LL | struct GenericAlign(ZstAlign32, u32); | ^^^^^^^^^^^^^ has alignment of 32, which is larger than 1 error[E0084]: unsupported representation for zero-variant enum --> $DIR/repr-transparent.rs:44:1 | LL | #[repr(transparent)] | ^^^^^^^^^^^^^^^^^^^^ LL | enum Void {} | --------- zero-variant enum error[E0731]: transparent enum needs exactly one variant, but has 0 --> $DIR/repr-transparent.rs:45:1 | LL | enum Void {} | ^^^^^^^^^ needs exactly one variant, but has 0 error[E0690]: the variant of a transparent enum needs at most one non-zero-sized field, but has 2 --> $DIR/repr-transparent.rs:58:1 | LL | enum TooManyFieldsEnum { | ^^^^^^^^^^^^^^^^^^^^^^ needs at most one non-zero-sized field, but has 2 LL | Foo(u32, String), | --- ------ this field is non-zero-sized | | | this field is non-zero-sized error[E0731]: transparent enum needs exactly one variant, but has 2 --> $DIR/repr-transparent.rs:64:1 | LL | enum MultipleVariants { | ^^^^^^^^^^^^^^^^^^^^^ needs exactly one variant, but has 2 LL | Foo(String), | --- variant here LL | Bar, | --- too many variants in `MultipleVariants` error[E0691]: zero-sized field in transparent enum has alignment larger than 1 --> $DIR/repr-transparent.rs:71:14 | LL | Foo(u32, [u16; 0]), | ^^^^^^^^ has alignment of 2, which is larger than 1 error[E0691]: zero-sized field in transparent enum has alignment larger than 1 --> $DIR/repr-transparent.rs:76:11 | LL | Foo { bar: ZstAlign32, baz: u32 } | ^^^^^^^^^^^^^^^^^^ has alignment of 32, which is larger than 1 error[E0690]: transparent union needs at most one non-zero-sized field, but has 2 --> $DIR/repr-transparent.rs:85:1 | LL | union TooManyFields { | ^^^^^^^^^^^^^^^^^^^ needs at most one non-zero-sized field, but has 2 LL | u: u32, | ------ this field is non-zero-sized LL | s: i32 | ------ this field is non-zero-sized error: aborting due to 11 previous errors Some errors have detailed explanations: E0084, E0690, E0691, E0731. For more information about an error, try `rustc --explain E0084`.