src/librustc_error_codes/error_codes/E0565.md

   1 A literal was used in a built-in attribute that doesn't support literals.
   2
   3 Erroneous code example:
   4
   5 ```compile_fail,E0565
   6 #[repr("C")] // error: meta item in `repr` must be an identifier
   7 struct Repr {}
   8
   9 fn main() {}
  10 ```
  11
  12 Literals in attributes are new and largely unsupported in built-in attributes.
  13 Work to support literals where appropriate is ongoing. Try using an unquoted
  14 name instead:
  15
  16 ```
  17 #[repr(C)] // ok!
  18 struct Repr {}
  19
  20 fn main() {}
  21 ```