From 793bc05be5d0d6ef7d32f4b3e45c5c74517a27df Mon Sep 17 00:00:00 2001
From: Paul Sokolovsky <pfalcon@users.sourceforge.net>
Date: Mon, 26 Dec 2016 19:11:38 +0300
Subject: [PATCH] uasyncio.core: Report unknown syscalls.

---
 uasyncio.core/uasyncio/core.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/uasyncio.core/uasyncio/core.py b/uasyncio.core/uasyncio/core.py
index e945fc7a..7ad43d5d 100644
--- a/uasyncio.core/uasyncio/core.py
+++ b/uasyncio.core/uasyncio/core.py
@@ -103,6 +103,8 @@ class EventLoop:
                             self.remove_writer(arg.fileno())
                         elif isinstance(ret, StopLoop):
                             return arg
+                        else:
+                            assert False, "Unknown syscall yielded: %r (of type %r)" % (ret, type(ret))
                     elif isinstance(ret, type_gen):
                         self.call_soon(ret)
                     elif isinstance(ret, int):