Lines with zero coverage (99/1238):

===File sql/item_func.h:
    923 : +  virtual bool get_date_common(THD *thd, MYSQL_TIME *ltime,
    926 : +    DBUG_ASSERT(0);
    927 : +    return 0;

===File sql/item_timefunc.cc:
    668 : +      else if (format_char == *val)
    670 : +        val++;
    686 : +    case FMT_YYY:
    687 : +      tmp= (char*) val + MY_MIN(3, val_len);
    688 : +      l_time->year= ((int) my_strtoll10(val, &tmp, &error) +
    689 : +                     l_time->year/1000*1000);
    690 : +      val= tmp;
    691 : +      break;
    698 : +    case FMT_Y:
    699 : +      tmp= (char*) val + MY_MIN(1, val_len);
    700 : +      l_time->year= ((int) my_strtoll10(val, &tmp, &error) +
    701 : +                     l_time->year/10*10);
    702 : +      val= tmp;
    703 : +      break;
    713 : +    case FMT_RRRR:
    716 : +      tmp= (char*) val + MY_MIN(4, val_len);
    717 : +      year= (uint)my_strtoll10(val, &tmp, &error);
    718 : +      l_time->year= year > 100 ? year : oracle_year_2000_handling(year);
    719 : +      val= tmp;
    720 : +      break;
    730 : +        goto error;
    749 : +        goto error;
    804 : +        goto error;
    811 : +        val+= 2;
    814 : +        daypart= 12;
    815 : +        val+= 4;
    820 : +        goto error;
    826 : +        goto error;
    828 : +    case FMT_DY:
    829 : +      if ((weekday= check_word(locale->ab_day_names, val, val_end, &val)) <= 0)
    830 : +        goto error;
    831 : +      break;
    839 : +    default:
    840 : +      goto error;
    850 : +      goto error;
    859 : +      goto error;
    889 : +    } while (++val != val_end);
   2608 : +          goto error;
   2616 : +          goto error;
   2626 : +            goto error;
   2634 : +            goto error;
   2650 : +        goto error;
   2672 : +        goto error;
   2701 : +        goto error;
   2704 : +        goto error;
   2726 : +        goto error;
   2762 : +        goto error;
   2793 : +          goto error;
   2802 : +          goto error;
   2813 : +          goto error;
   2856 : +            goto error;
   2894 : +        goto error;
   2936 : +          goto error;
   2943 : +               !my_charset_latin1.strnncoll(ptr+1, 4, "YYYY", 4))
   2976 : +          goto error;
   2983 : +          goto error;
   3213 : +        goto err_exit;
   3225 : +        goto err_exit;
   3238 : +          goto err_exit;
   3245 : +          goto err_exit;
   3250 : +        goto err_exit;
   4671 : +      return true;
   4678 : +          return true;
   4682 : +      return true;
   4695 : +      return true;                  // Empty values are not allowed
   4706 : +        return 1;
   4743 : +        return;
   4797 : +void Item_func_to_date::print(String *str, enum_query_type query_type)
   4799 : +  str->append(func_name_cstring());
   4800 : +  str->append('(');
   4801 : +  args[0]->print(str, query_type);
   4802 : +  if (arg_count == 3)
   4804 : +    str->append(STRING_WITH_LEN("DEFAULT "));
   4805 : +    args[2]->print(str, query_type);
   4806 : +    str->append(STRING_WITH_LEN(" ON CONVERSION ERROR"));
   4808 : +  str->append(',');
   4809 : +  args[1]->print(str, query_type);
   4810 : +  if (nls_param.length)
   4812 : +    str->append(',');
   4813 : +    str->append(nls_param);
   4815 : +  str->append(')');
   4816 : +}
   4823 : +    return true;
   4833 : +    my_error(ER_ILLEGAL_PARAMETER_DATA_TYPES2_FOR_OPERATION, MYF(0),
   4834 : +             args[0]->type_handler()->name().ptr(),
   4835 : +             args[2]->type_handler()->name().ptr(), func_name());
   4836 : +    return TRUE;
   4839 : +    return TRUE;
   4841 : +    internal_charset= &my_charset_utf8mb4_general_ci;
   4877 : +    goto error;
   4884 : +      goto error;
   4888 : +      goto error;

===File sql/item_timefunc.h:
   1842 : +  Item *do_get_copy(THD *thd) const override
   1843 : +  { return get_item_copy<Item_func_to_date>(thd, this); }

===File sql/sql_yacc.yy:
  10421 : +            MYSQL_YYABORT;
  10428 : +            MYSQL_YYABORT;