| A `#[simd]` attribute was applied to an empty tuple struct. | |
| Erroneous code example: | |
| ```compile_fail,E0075 | |
| #![feature(repr_simd)] | |
| #[repr(simd)] | |
| struct Bad; // error! | |
| ``` | |
| The `#[simd]` attribute can only be applied to non empty tuple structs, because | |
| it doesn't make sense to try to use SIMD operations when there are no values to | |
| operate on. | |
| Fixed example: | |
| ``` | |
| #![feature(repr_simd)] | |
| #[repr(simd)] | |
| struct Good(u32); // ok! | |
| ``` |