Disable concurrency test on arm64e.

DougGregor · DougGregor · commit 12b08ae38211 · 2020-11-30T10:20:26.000-08:00
ptrauth is not yet implemented for asynchronous functions.
Fixes rdar://71809918.
diff --git a/test/Concurrency/Runtime/async_task_priority_basic.swift b/test/Concurrency/Runtime/async_task_priority_basic.swift
@@ -2,6 +2,7 @@
 // REQUIRES: executable_test
 // REQUIRES: concurrency
 // REQUIRES: libdispatch
+// XFAIL: CPU=arm64e
 
 import Dispatch
 
