error: Expecting reference ident or `[`.
 --> tests/compile_fail/self_references/invalid_syntax.rs:6:17
  |
6 |     #[attr(a = #)]
  |                 ^

error: Expecting `.`.
 --> tests/compile_fail/self_references/invalid_syntax.rs:9:21
  |
9 |     #[attr(a = #self)]
  |                     ^

error: Expecting ident.
  --> tests/compile_fail/self_references/invalid_syntax.rs:12:22
   |
12 |     #[attr(a = #self.)]
   |                      ^

error: Value not set for `a`.
 --> tests/compile_fail/self_references/invalid_syntax.rs:7:5
  |
7 |     Variant1(usize, u32),
  |     ^^^^^^^^

error: Value not set for `a`.
  --> tests/compile_fail/self_references/invalid_syntax.rs:10:5
   |
10 |     Variant3(usize, u32),
   |     ^^^^^^^^

error: Value not set for `a`.
  --> tests/compile_fail/self_references/invalid_syntax.rs:13:5
   |
13 |     Variant4(usize, u32),
   |     ^^^^^^^^