Describe the bug

1. Create setup.py

   from Cython.Build import cythonize
   import Cython.Compiler.Options
   Cython.Compiler.Options.embed_pos_in_docstring = True
   from setuptools import setup
   setup(
   	ext_modules=cythonize(
   		"a.pyx",
   		compiler_directives={'fast_getattr': True},
   		)
   	)

2. Create a.pyx

   def f():
   	cdef int[:] b
   f()

3. Run in shell

   rm a.c
   python setup.py build_ext --inplace
   python -c "import a"

4. See

   Traceback (most recent call last):
     File "<string>", line 1, in <module>
     File "a.pyx", line 1, in init a
   	def f():
   AttributeError: type object 'a.array' has no attribute '__getattr__'. Did you mean: '__setattr__'?

Expected behaviour

It runs without error

OS

Linux

Python version

3.12.6

Cython version

3.0.11

Additional context

Context: trying to use memoryview in SageMath sagemath/sage#38834

Actually fast_getattr is undocumented… but SageMath uses it.