| // run-pass |
| |
| #![feature(asm)] |
| #![allow(dead_code)] |
| |
| use std::cell::Cell; |
| |
| #[repr(C)] |
| struct NoisyDrop<'a>(&'a Cell<&'static str>); |
| impl<'a> Drop for NoisyDrop<'a> { |
| fn drop(&mut self) { |
| self.0.set("destroyed"); |
| } |
| } |
| |
| #[cfg(any(target_arch = "x86", target_arch = "x86_64"))] |
| fn main() { |
| let status = Cell::new("alive"); |
| { |
| let _y: Box<NoisyDrop>; |
| let x = Box::new(NoisyDrop(&status)); |
| unsafe { |
| asm!("mov $1, $0" : "=r"(_y) : "r"(x)); |
| } |
| assert_eq!(status.get(), "alive"); |
| } |
| assert_eq!(status.get(), "destroyed"); |
| } |
| |
| #[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))] |
| fn main() {} |