that's on nixos

(ins)[nix-shell:/tmp]$ ./a.out
poll() returned: 0

(ins)[nix-shell:/tmp]$ cat test.c
#include <stdio.h>
#include <poll.h>
#include <errno.h>
#include <string.h>

int main() {
    int result = poll(NULL, 0, 1000);

    printf("poll() returned: %d\n", result);

    if (result == -1) {
        printf("Error: %s\n", strerror(errno));
    }

    return 0;
}


(ins)[nix-shell:/tmp]$ clang ./test.c

(ins)[nix-shell:/tmp]$ ./a.out
poll() returned: 0

The test is whether it supports devices. According to POSIX:

The poll() and ppoll() functions shall support regular files, terminal and pseudo-terminal devices, FIFOs, pipes, and sockets. The behavior of poll() and ppoll() on elements of fds that refer to other types of file is unspecified.