#include <errno.h>
#include <signal.h>
#include <spawn.h>
#include <unistd.h>

static int p[2];

int execve(const char *path, char *const argv[], char *const envp[]) {
  close(p[1]);
  kill(getppid(), SIGKILL);
  read(p[0], &(char){0}, 1);
  errno = ENOENT;
  return -1;
}

int main(int argc, char *argv[], char *envp[]) {
    signal(SIGPIPE, SIG_IGN);
    pipe(p);
    posix_spawn(0L, "/non-existing", 0L, 0L, argv, envp);
    return 0;
}