error[E0690]: transparent struct needs exactly one non-zero-sized field, but has 0
  --> $DIR/repr-transparent.rs:11:1
   |
LL | struct NoFields;
   | ^^^^^^^^^^^^^^^^

error[E0690]: transparent struct needs exactly one non-zero-sized field, but has 0
  --> $DIR/repr-transparent.rs:14:1
   |
LL | struct ContainsOnlyZst(());
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0690]: transparent struct needs exactly one non-zero-sized field, but has 0
  --> $DIR/repr-transparent.rs:17:1
   |
LL | struct ContainsOnlyZstArray([bool; 0]);
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0690]: transparent struct needs exactly one non-zero-sized field, but has 0
  --> $DIR/repr-transparent.rs:20:1
   |
LL | struct ContainsMultipleZst(PhantomData<*const i32>, NoFields);
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0690]: transparent struct needs exactly one non-zero-sized field, but has 2
  --> $DIR/repr-transparent.rs:24:1
   |
LL | struct MultipleNonZst(u8, u8);
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: the following non-zero-sized fields exist on `MultipleNonZst`:
  --> $DIR/repr-transparent.rs:24:23
   |
LL | struct MultipleNonZst(u8, u8);
   |                       ^^  ^^

error[E0690]: transparent struct needs exactly one non-zero-sized field, but has 2
  --> $DIR/repr-transparent.rs:30:1
   |
LL | pub struct StructWithProjection(f32, <f32 as Mirror>::It);
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: the following non-zero-sized fields exist on `StructWithProjection`:
  --> $DIR/repr-transparent.rs:30:33
   |
LL | pub struct StructWithProjection(f32, <f32 as Mirror>::It);
   |                                 ^^^  ^^^^^^^^^^^^^^^^^^^

error[E0691]: zero-sized field in transparent struct has alignment larger than 1
  --> $DIR/repr-transparent.rs:34:32
   |
LL | struct NontrivialAlignZst(u32, [u16; 0]);
   |                                ^^^^^^^^

error[E0691]: zero-sized field in transparent struct has alignment larger than 1
  --> $DIR/repr-transparent.rs:40:24
   |
LL | struct GenericAlign<T>(ZstAlign32<T>, u32);
   |                        ^^^^^^^^^^^^^

error[E0084]: unsupported representation for zero-variant enum
  --> $DIR/repr-transparent.rs:42:1
   |
LL | #[repr(transparent)]
   | ^^^^^^^^^^^^^^^^^^^^
LL | enum Void {}
   | ------------ zero-variant enum

error[E0731]: transparent enum needs exactly one variant, but has 0
  --> $DIR/repr-transparent.rs:43:1
   |
LL | enum Void {}
   | ^^^^^^^^^^^^

error[E0690]: the variant of a transparent enum needs exactly one non-zero-sized field, but has 0
  --> $DIR/repr-transparent.rs:47:1
   |
LL | / enum FieldlessEnum {
LL | |     Foo,
LL | | }
   | |_^

error[E0690]: the variant of a transparent enum needs exactly one non-zero-sized field, but has 2
  --> $DIR/repr-transparent.rs:52:1
   |
LL | / enum TooManyFieldsEnum {
LL | |     Foo(u32, String),
LL | | }
   | |_^
   |
note: the following non-zero-sized fields exist on `TooManyFieldsEnum`:
  --> $DIR/repr-transparent.rs:53:9
   |
LL |     Foo(u32, String),
   |         ^^^  ^^^^^^

error[E0731]: transparent enum needs exactly one variant, but has 2
  --> $DIR/repr-transparent.rs:58:1
   |
LL | / enum TooManyVariants {
LL | |     Foo(String),
LL | |     Bar,
LL | | }
   | |_^
   |
note: the following variants exist on `TooManyVariants`
  --> $DIR/repr-transparent.rs:59:5
   |
LL |     Foo(String),
   |     ^^^^^^^^^^^
LL |     Bar,
   |     ^^^

error[E0690]: transparent union needs exactly one non-zero-sized field, but has 0
  --> $DIR/repr-transparent.rs:64:1
   |
LL | / union UnitUnion {
LL | |     u: (),
LL | | }
   | |_^

error[E0690]: transparent union needs exactly one non-zero-sized field, but has 2
  --> $DIR/repr-transparent.rs:69:1
   |
LL | / union TooManyFields {
LL | |     u: u32,
LL | |     s: i32
LL | | }
   | |_^
   |
note: the following non-zero-sized fields exist on `TooManyFields`:
  --> $DIR/repr-transparent.rs:70:5
   |
LL |     u: u32,
   |     ^^^^^^
LL |     s: i32
   |     ^^^^^^

error: aborting due to 15 previous errors

Some errors have detailed explanations: E0084, E0690, E0691, E0731.
For more information about an error, try `rustc --explain E0084`.