Crash when modifying DLL function pointers conconcurrently #127946

import ctypes
from threading import Thread

dll = ctypes.CDLL("libc.so.6")

def main():
    for _ in range(100):
        dll.puts.argtypes = ctypes.c_char_p,
        dll.puts.restype = ctypes.c_int

threads = [Thread(target=main) for _ in range(100)]
for thread in threads:
    thread.start()