| //! Test casts for alignment issues |
| |
| #![feature(rustc_private)] |
| extern crate libc; |
| |
| #[warn(clippy::cast_ptr_alignment)] |
| #[allow(clippy::no_effect, clippy::unnecessary_operation, clippy::cast_lossless)] |
| fn main() { |
| /* These should be warned against */ |
| |
| // cast to more-strictly-aligned type |
| (&1u8 as *const u8) as *const u16; |
| (&mut 1u8 as *mut u8) as *mut u16; |
| |
| /* These should be ok */ |
| |
| // not a pointer type |
| 1u8 as u16; |
| // cast to less-strictly-aligned type |
| (&1u16 as *const u16) as *const u8; |
| (&mut 1u16 as *mut u16) as *mut u8; |
| // For c_void, we should trust the user. See #2677 |
| (&1u32 as *const u32 as *const std::os::raw::c_void) as *const u32; |
| (&1u32 as *const u32 as *const libc::c_void) as *const u32; |
| } |