fusl/src/stdio/__stdio_exit.c

#include "stdio_impl.h"

static FILE* volatile dummy_file = 0;
weak_alias(dummy_file, __stdin_used);
weak_alias(dummy_file, __stdout_used);
weak_alias(dummy_file, __stderr_used);

static void close_file(FILE* f) {
  if (!f)
    return;
  FFINALLOCK(f);
  if (f->wpos > f->wbase)
    f->write(f, 0, 0);
  if (f->rpos < f->rend)
    f->seek(f, f->rpos - f->rend, SEEK_CUR);
}

void __stdio_exit(void) {
  FILE* f;
  for (f = *__ofl_lock(); f; f = f->next)
    close_file(f);
  close_file(__stdin_used);
  close_file(__stdout_used);
}

weak_alias(__stdio_exit, __stdio_exit_needed);