diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index c850001408..d1be7bf8b9 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -171,7 +171,11 @@ extern "C" {
  *       ....
  *   }
  */
+#ifdef __clang__
+#define coroutine_fn __attribute__((__annotate__("coroutine_fn")))
+#else
 #define coroutine_fn
+#endif
 
 /*
  * For mingw, as of v6.0.0, the function implementing the assert macro is