src/test/ui/lint/lint-invalid-atomic-ordering-fence.rs

   1 // only-x86_64
   2 use std::sync::atomic::{compiler_fence, fence, Ordering};
   3
   4 fn main() {
   5     // Allowed ordering modes
   6     fence(Ordering::Acquire);
   7     fence(Ordering::Release);
   8     fence(Ordering::AcqRel);
   9     fence(Ordering::SeqCst);
  10
  11     compiler_fence(Ordering::Acquire);
  12     compiler_fence(Ordering::Release);
  13     compiler_fence(Ordering::AcqRel);
  14     compiler_fence(Ordering::SeqCst);
  15
  16     // Disallowed ordering modes
  17     fence(Ordering::Relaxed);
  18     //~^ ERROR memory fences cannot have `Relaxed` ordering
  19     compiler_fence(Ordering::Relaxed);
  20     //~^ ERROR memory fences cannot have `Relaxed` ordering
  21 }