New submission from STINNER Victor <vstin...@python.org>:
The Python C API provides "AS" functions to convert an object to another type, like PyFloat_AS_DOUBLE(). These macros can be abused to be used as l-value: "PyFloat_AS_DOUBLE(obj) = new_value;". It prevents to change the PyFloat implementation and makes life harder for Python implementations other than CPython. I propose to convert these macros to static inline functions to disallow using them as l-value. I made a similar change for Py_REFCNT(), Py_TYPE() and Py_SIZE(). For these functions, I added "SET" variants: Py_SET_REFCNT(), Py_SET_TYPE(), Py_SET_SIZE(). Here, I don't think that the l-value case is legit, and so I don't see the need to add a way to *set* a value. For example, I don't think that PyFloat_SET_DOUBLE(obj, value) would make sense. A Python float object is supposed to be immutable. ---------- components: C API messages: 403950 nosy: vstinner priority: normal severity: normal status: open title: [C API] Convert "AS" functions, like PyFloat_AS_DOUBLE(), to static inline functions versions: Python 3.11 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue45476> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
