| A tuple struct's element isn't a machine type when using the `#[simd]` | |
| attribute. | |
| Erroneous code example: | |
| ```compile_fail,E0077 | |
| #![feature(repr_simd)] | |
| #[repr(simd)] | |
| struct Bad(String); // error! | |
| ``` | |
| When using the `#[simd]` attribute on a tuple struct, the elements in the tuple | |
| must be machine types so SIMD operations can be applied to them. | |
| Fixed example: | |
| ``` | |
| #![feature(repr_simd)] | |
| #[repr(simd)] | |
| struct Good(u32, u32, u32, u32); // ok! | |
| ``` |