patch 9.1.0724: if_python: link error with python 3.13 and stable ABI Commit: https://github.com/vim/vim/commit/c2285a8cf397d1d694a350415fb37f7d51202ec4 Author: Yee Cheng Chin <ychin.git@gmail.com> Date: Mon Sep 9 19:55:24 2024 +0200 patch 9.1.0724: if_python: link error with python 3.13 and stable ABI Problem: if_python: link error with python 3.13 and stable ABI (zdohnal) Solution: Use the correct stable APIs Py_IncRef and Py_DecRef instead (Yee Cheng Chin) This fixes #15460 properly. There was an attempt to fix it in v9.1.0668, but it did it by manually copy and pasting definitions from Python 3.13 headers, which is problematic as it makes Vim dependent on low-level implementation details which are subject to change. That change also pulls in dependencies to private APIs (`_Py_IncRef`) which is a very bad idea as the next version of Python could very well remove that. The core issue was simply that `Py_INCREF` and similar functions are not part of the stable API. We are supposed to be using `Py_IncRef` instead which performs null-check (similar to `Py_XINCREF`) and is available as a linkable function. We simply need to call it instead of the macro. We simply remap `Py_INCREF` (and friends) to the function version in stable API similar to how we mapped other functions. related #15460 closes: #15648 Signed-off-by: Yee Cheng Chin <ychin.git@gmail.com> Signed-off-by: Christian Brabandt <cb@256bit.org>

src/testdir/test42.in diff