| //@ run-pass |
| //@ ignore-emscripten FIXME(#45351) |
| |
| #![feature(repr_simd, test)] |
| |
| extern crate test; |
| |
| #[repr(simd)] |
| pub struct Mu64(pub [u64; 4]); |
| |
| fn main() { |
| // This ensures an unaligned pointer even in optimized builds, though LLVM |
| // gets enough type information to actually not mess things up in that case, |
| // but at the time of writing this, it's enough to trigger the bug in |
| // non-optimized builds |
| unsafe { |
| let memory = &mut [0u64; 8] as *mut _ as *mut u8; |
| let misaligned_ptr: &mut [u8; 32] = { |
| std::mem::transmute(memory.offset(1)) |
| }; |
| *misaligned_ptr = std::mem::transmute(Mu64([1, 1, 1, 1])); |
| test::black_box(memory); |
| } |
| } |
