New issue 1982: ctypes.Structure subclasses munge `_names` attribute
https://bitbucket.org/pypy/pypy/issue/1982/ctypesstructure-subclasses-munge-_names
Ben Longbons:
The below code will print `{}` in python 2.7, 3.2, and 3.4, but `['foo',
'bar']` in pypy 2.4.0 (in python2 or python3 mode).
If there is a reason to introduce new names, they should follow the ctypes
`_sunder_` method.
(yeah, yeah, I should use `cffi`)
```
#!python
import ctypes
class Stuff(ctypes.Structure):
__slots__ = ()
_fields_ = [('foo', ctypes.c_int), ('bar', ctypes.c_int)]
_names = {}
print(Stuff._names)
```
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