Pre-PEP: Unified slot system for the C API

pitrou · June 12, 2025, 7:58am

I got the following version to work on both C11 and C++89 to C++20:

gist.github.com

https://gist.github.com/pitrou/cbf866afc5092a6be86ee67473ee399b

pyslots.c

// Works with all of:
//   gcc -x c -std=c11 -Wall -pedantic
//   gcc -x c++ -std=c++98 -Wall -pedantic
//   gcc -x c++ -std=c++11 -Wall -pedantic
//   gcc -x c++ -std=c++17 -Wall -pedantic
//   gcc -x c++ -std=c++20 -Wall -pedantic

#include <Python.h>

typedef void *(*Py_genericfunc)(void*);

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(I think C++11 is a reasonable minimal requirement, though)