---
title: task_test_async_upcall_propagation
framework: Kernel
role: symbol
role_heading: Function
platforms: [macOS 12.3+]
path: kernel/3917694-task_test_async_upcall_propagati
---

# task_test_async_upcall_propagation

## Declaration

```occ
kern_return_t task_test_async_upcall_propagation(task_t task, mach_port_t port, int qos, int iotier);
```