cc -pthread  -Wall -Wextra -Werror=implicit-function-declaration sys_socket/accept4.c -o sys_socket/accept4 -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt -lintl -liconv
relibc getrlimit(3, 0x7ffffffffc80): not implemented
relibc getrlimit(3, 0x7ffffffffba0): not implemented
relibc getrlimit(9, 0x7ffffffffb60): not implemented
relibc getrlimit(9, 0x7ffffffffb90): not implemented
relibc getrlimit(5, 0x7ffffffffb90): not implemented
relibc getrlimit(9, 0x7ffffffffb60): not implemented
sys_socket/accept4.c: In function 'main':
sys_socket/accept4.c:45:25: error: implicit declaration of function 'accept4'; did you mean 'accept'? [-Werror=implicit-function-declaration]
   45 |         int server_fd = accept4(listen_fd, (struct sockaddr*) &peer, &peer_len,
      |                         ^~~~~~~
      |                         accept
cc1: some warnings being treated as errors