3.5 *() arg without further args

test/simple_source/bug35/04_call_function.py

@@ -21,3 +21,10 @@ def Time2Internaldate(date_time):
     return datetime(*date_time[:6], tzinfo=timezone(delta))
 
 assert Time2Internaldate(time.localtime())
+
+# From 3.5.5 tkinter/dialog.py
+def test_varargs0_ext(self):
+    try:
+        {}.__contains__(*())
+    except TypeError:
+        pass

uncompyle6/parsers/parse35.py

@@ -210,7 +210,6 @@ class Python35Parser(Python34Parser):
             self.add_unique_rule(rule, token.kind, uniq_param, customize)
             self.add_unique_rule('expr ::= async_call', token.kind, uniq_param, customize)
 
-        uniq_param = args_kw + args_pos
         if opname.startswith('CALL_FUNCTION_VAR'):
             # Python 3.5 changes the stack position of *args. KW args come
             # after *args.
@@ -226,7 +225,10 @@ class Python35Parser(Python34Parser):
             rule = ('call ::= expr expr ' +
                     ('pos_arg ' * args_pos) +
                     ('kwarg ' * args_kw) + kw + token.kind)
-            self.add_unique_rule(rule, token.kind, uniq_param, customize)
+
+            # Note: semantic actions make use of the fact of wheter  "args_pos"
+            # zero or not in creating a template rule.
+            self.add_unique_rule(rule, token.kind, args_pos, customize)
         else:
             super(Python35Parser, self).custom_classfunc_rule(opname, token, customize,
                                                               seen_LOAD_BUILD_CLASS,

uncompyle6/semantics/customize.py

@@ -313,7 +313,10 @@ def customize_for_version(self, is_pypy, version):
                                 template = ('*%P)', (0, len(args_node)-1, ', *', 100))
                                 self.template_engine(template, args_node)
                             else:
-                                template = ('*%c, %C)', 1, (2, -1, ', '))
+                                if len(node) > 3:
+                                    template = ('*%c, %C)', 1, (2, -1, ', '))
+                                else:
+                                    template = ('*%c)', 1)
                                 self.template_engine(template, node)
                             self.prune()