t / helper / test-online-cpus.con commit difftool --no-index: error out on --dir-diff (and don't crash) (f3a3a02)
   1#include "test-tool.h"
   2#include "git-compat-util.h"
   3#include "thread-utils.h"
   4
   5int cmd__online_cpus(int argc, const char **argv)
   6{
   7        printf("%d\n", online_cpus());
   8        return 0;
   9}