Stackless issue python#79: fix the exception raised on missing arguments

Fixed tasklet.raise_exception and channel.send_exception to raise a correct TypeError,
if called without arguments.
(grafted from d8e8ff8b72508dd3c642d8aa3ff82065daf01abf)

Author: Anselm Kruis

Stackless/changelog.txt

@@ -10,6 +10,13 @@ What's New in Stackless 3.X.X?
 
 *Release date: 20XX-XX-XX*
 
+- https://bitbucket.org/stackless-dev/stackless/issue/79
+  Add __all__ to module stackless. Add entries to the module's __dict__
+  for the computed properties (i.e. current, main, ...). This helps IDEs
+  (PyDev) to recognise the expression "stackless.current" as a defined name.
+  Fixed tasklet.raise_exception and channel.send_exception to raise a correct
+  TypeError, if called without arguments.
+
 - https://bitbucket.org/stackless-dev/stackless/issue/77
   Fix a NULL pointer exception, if a call to stackless.tasklet() fails
   (i.e. called with invalid arguments).

Stackless/module/channelobject.c

@@ -651,7 +651,7 @@ channel_send_exception(PyObject *myself, PyObject *args)
     PyObject *klass = PySequence_GetItem(args, 0);
 
     if (klass == NULL)
-        VALUE_ERROR("channel.send_exception(e, v...)", NULL);
+        TYPE_ERROR("send_exception() takes at least 1 argument", NULL);
     args = PySequence_GetSlice(args, 1, PySequence_Size(args));
     if (!args) {
         goto err_exit;
@@ -780,7 +780,7 @@ PyChannel_Receive(PyChannelObject *self)
 {
     PyObject *ret = impl_channel_receive(self);
     STACKLESS_ASSERT();
-    assert(!STACKLESS_UNWINDING(self));
+    assert(!STACKLESS_UNWINDING(ret));
     return ret;
 }
 

Stackless/module/taskletobject.c

@@ -1191,7 +1191,7 @@ tasklet_raise_exception(PyObject *myself, PyObject *args)
     PyObject *klass = PySequence_GetItem(args, 0);
 
     if (klass == NULL)
-        VALUE_ERROR("tasklet.raise_exception(e, v...)", NULL);
+        TYPE_ERROR("raise_exception() takes at least 1 argument", NULL);
     args = PySequence_GetSlice(args, 1, PySequence_Size(args));
     if (!args) goto err_exit;
     STACKLESS_PROMOTE_ALL();