Message 413086 - Python tracker

On Fri, Feb 11, 2022 at 1:36 AM Christoph Reiter <report@bugs.python.org> wrote:
> Sorry if off topic, but I noticed that CPython doesn't deprecate macros in code, while with gcc/clang it's possible to show compiler warnings for them using some pragma magic:
> [snip]
> Maybe that makes getting rid of them easier in the long run?

That's a good question.  We do have Py_DEPRECATED() (in
Include/pyport.h), which is used for symbols.  I'm not sure anyone has
given much thought to deprecating macros, but it's probably worth
considering.  I recommend that you post something about this to
python-dev@python.org.

FWIW, here are other explanations of how to deprecate macros:

* https://stackoverflow.com/questions/57478368/what-is-the-best-way-to-mark-macro-as-deprecated/57479189#57479189
* https://stackoverflow.com/questions/2681259/how-to-deprecate-a-c-pre-processor-macro-in-gcc/29297970#29297970