winapi.co.kr가서 전처리기 확인해도

#if 다음에는 조건이 온다는데
(예 : #if (LEVEL == 0))

그냥 #if 0이 오면 어떻다는 뜻이야?;;


소스 코드는 glibc malloc.c에서 malloc_consolidate(av) 정의부분의 일부야

  if (get_max_fast () != 0) {
    clear_fastchunks(av);

    unsorted_bin = unsorted_chunks(av);

    /*
      Remove each chunk from fast bin and consolidate it, placing it
      then in unsorted bin. Among other reasons for doing this,
      placing in unsorted bin avoids needing to calculate actual bins
      until malloc is sure that chunks aren\'t immediately going to be
      reused anyway.
    */

#if 0
    /* It is wrong to limit the fast bins to search using get_max_fast
       because, except for the main arena, all the others might have
       blocks in the high fast bins.  It\'s not worth it anyway, just
       search all bins all the time.  */
    maxfb = &fastbin (av, fastbin_index(get_max_fast ()));
#else
    maxfb = &fastbin (av, NFASTBINS - 1);
#endif