Coroutine objects are now rejected with a TypeError by the following functions:

* add_signal_handler()
* call_at()
* call_later()
* call_soon()
* call_soon_threadsafe()
* run_in_executor()

Fix also the error message of add_signal_handler() (fix the name of the
function).

1 files changed, 3 insertions, 2 deletions

diff --git a/asyncio/unix_events.py b/asyncio/unix_events.py
index e49212e..efe06d4 100644
--- a/asyncio/unix_events.py
+++ b/asyncio/unix_events.py
@@ -67,8 +67,9 @@ class _UnixSelectorEventLoop(selector_events.BaseSelectorEventLoop):
         Raise ValueError if the signal number is invalid or uncatchable.
         Raise RuntimeError if there is a problem setting up the handler.
         """
-        if coroutines.iscoroutinefunction(callback):
-            raise TypeError("coroutines cannot be used with call_soon()")
+        if (coroutines.iscoroutine(callback)
+        or coroutines.iscoroutinefunction(callback)):
+            raise TypeError("coroutines cannot be used with add_signal_handler()")
         self._check_signal(sig)
         try:
             # set_wakeup_fd() raises ValueError if this is not the