src/librustc_error_codes/error_codes/E0077.md

   1 A tuple struct's element isn't a machine type when using the `#[simd]`
   2 attribute.
   3
   4 Erroneous code example:
   5
   6 ```compile_fail,E0077
   7 #![feature(repr_simd)]
   8
   9 #[repr(simd)]
  10 struct Bad(String); // error!
  11 ```
  12
  13 When using the `#[simd]` attribute on a tuple struct, the elements in the tuple
  14 must be machine types so SIMD operations can be applied to them.
  15
  16 Fixed example:
  17
  18 ```
  19 #![feature(repr_simd)]
  20
  21 #[repr(simd)]
  22 struct Good(u32, u32, u32); // ok!
  23 ```