Added issue: iterable unpacking cannot be used in comprehension

parso/python/normalizer.py

@@ -136,6 +136,10 @@ class ErrorFinder(Normalizer):
             if node.parent.type not in _STAR_EXPR_PARENTS:
                 message = "starred assignment target must be in a list or tuple"
                 self._add_syntax_error(message, node)
+            if node.parent.type == 'testlist_comp':
+                # [*[] for a in [1]]
+                message = "iterable unpacking cannot be used in comprehension"
+                self._add_syntax_error(message, node)
         elif node.type == 'comp_for':
             if node.children[0] == 'async' \
                     and not self._context.is_async_funcdef():

test/test_python_errors.py

@@ -109,6 +109,7 @@ def test_python_exception_matches(code):
         ('del *a, b', '3.5'),
         ('def x(*): pass', '3.5'),
         ('async def foo():\n def nofoo():[x async for x in []]', '3.6'),
+        ('[*[] for a in [1]]', '3.5'),
     ]
 )
 def test_python_exception_matches_version(code, version):