Index: uspace/lib/libc/include/async.h
===================================================================
--- uspace/lib/libc/include/async.h	(revision 057d21af95b6d9e801a14c4a6e6e4a784ad3dfd7)
+++ uspace/lib/libc/include/async.h	(revision e5792d16c0e117f023535f0c311c1c3f35c80b0e)
@@ -47,4 +47,6 @@
 extern atomic_t async_futex;
 
+extern atomic_t threads_in_ipc_wait;
+
 extern int __async_init(void);
 extern ipc_callid_t async_get_call_timeout(ipc_call_t *call, suseconds_t usecs);