void
mhash2(key1, h1, key2)
  char* key1
  char* key2
  HV* h1
  CODE:
    I32 klen1 = strlen(key1);
    I32 klen2 = strlen(key2);
    if ( hv_exists(h1, key1, klen1) ) {
      SV** h2r = hv_fetch(h1, key1, klen1, 0);
      HV* h2 = (HV*)*h2r;
      if ( hv_exists(h2, key2, klen2) ) {
        printf("%s\n", "found it!");
      }
    }