prevent DefNode inlining for signatures with kwonly arguments

Cython/Compiler/ExprNodes.py

@@ -5069,6 +5069,8 @@ class InlinedDefNodeCallNode(CallNode):
             return False
         if len(func_type.args) != len(self.args):
             return False
+        if func_type.num_kwonly_args:
+            return False  # actually wrong number of arguments
         return True
 
     def analyse_types(self, env):

tests/run/closure_inlining.pyx

@@ -72,6 +72,27 @@ def test_defaults(a, b):
         return a, b, c
     return inner(a)
 
+@cython.test_assert_path_exists('//SimpleCallNode')
+def test_kwonly_args(a, b):
+    """
+    >>> test_kwonly_args(1, 2)
+    (1, 2, 123)
+    """
+    def inner(a, b=b, *, c=123):
+        return a, b, c
+    return inner(a)
+
+@cython.test_assert_path_exists('//SimpleCallNode')
+def test_kwonly_args_missing(a, b):
+    """
+    >>> test_kwonly_args_missing(1, 2)
+    Traceback (most recent call last):
+    TypeError: inner() needs keyword-only argument c
+    """
+    def inner(a, b=b, *, c):
+        return a, b, c
+    return inner(a)
+
 @cython.test_assert_path_exists('//SimpleCallNode')
 def test_starred(a):
     """