Fix POINTER and test_creating_pointer_in_dunder_new_1

Author: sergey-miryanov

Lib/ctypes/__init__.py

@@ -279,7 +279,7 @@ def POINTER(cls):
         pass
     if isinstance(cls, str):
         return type(f'LP_{cls}', (_Pointer,), {})
-    if issubclass(cls, CType_Type):
+    if isinstance(cls, _CType_Type):
         return type(f'LP_{cls.__name__}', (_Pointer,), {'_type_': cls})
 
     raise TypeError(f'must be a ctypes-like type: {cls}')

Lib/test/test_ctypes/test_c_simple_type_meta.py

@@ -36,7 +36,7 @@ def __new__(cls, name, bases, namespace):
                 else:
                     ptr_bases = (self, POINTER(bases[0]))
                 p = p_meta(f"POINTER({self.__name__})", ptr_bases, {})
-                cls.__pointer_type__ = p
+                self.__pointer_type__ = p
                 return self
 
         class p_meta(PyCSimpleType, ct_meta):