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b41b0fd62b
if input year for date_add() / date_sub() with INTERVAL is low enough for
calc_daynr() to possibly return incorrect results (calc_daynr() has no information
on whether the year is low because it was a two-digit year ('77) or because it
was a really low four-digit year (0077) and will indiscriminately try to turn the
value into a four-digit year by adding 1900 or 2000 respectively), the functions
will now throw NULL.
include/my_time.h:
new define YY_MAGIC_BELOW: if year is below this threshold, magic kicks in in
calc_daynr(). the idea is to convert two-digit years to four-digit ones, adding
1900 to values >= YY_PART_YEAR or adding 2000 otherwise.
current value of YY_MAGIC_BELOW derived from original code in calc_daynr()
mysql-test/r/func_time.result:
test where 2 digit -> 4 digit year magic kicks in, and whether we throw NULL when
it happens
mysql-test/t/func_time.test:
test where 2 digit -> 4 digit year magic kicks in, and whether we throw NULL when
it happens
sql-common/my_time.c:
use new const YY_MAGIC_BELOW, apply 2-digit -> 4-digit magic only to years
below this threshold.
sql/item_timefunc.cc:
throw NULL when year in date_add() / date_sub() would be affected by
2 digit -> 4 digit magic.
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| .. | ||
| mysql | ||
| .cvsignore | ||
| base64.h | ||
| config-netware.h | ||
| config-win.h | ||
| decimal.h | ||
| errmsg.h | ||
| ft_global.h | ||
| hash.h | ||
| heap.h | ||
| help_end.h | ||
| help_start.h | ||
| keycache.h | ||
| m_ctype.h | ||
| m_string.h | ||
| Makefile.am | ||
| md5.h | ||
| my_aes.h | ||
| my_alarm.h | ||
| my_alloc.h | ||
| my_base.h | ||
| my_bitmap.h | ||
| my_dbug.h | ||
| my_dir.h | ||
| my_getopt.h | ||
| my_global.h | ||
| my_handler.h | ||
| my_list.h | ||
| my_net.h | ||
| my_no_pthread.h | ||
| my_nosys.h | ||
| my_pthread.h | ||
| my_semaphore.h | ||
| my_sys.h | ||
| my_time.h | ||
| my_tree.h | ||
| my_trie.h | ||
| my_uctype.h | ||
| my_user.h | ||
| my_vle.h | ||
| my_xml.h | ||
| myisam.h | ||
| myisammrg.h | ||
| myisampack.h | ||
| mysql.h | ||
| mysql_com.h | ||
| mysql_embed.h | ||
| mysql_time.h | ||
| mysql_version.h.in | ||
| mysys_err.h | ||
| queues.h | ||
| rijndael.h | ||
| sha1.h | ||
| sql_common.h | ||
| sslopt-case.h | ||
| sslopt-longopts.h | ||
| sslopt-vars.h | ||
| t_ctype.h | ||
| thr_alarm.h | ||
| thr_lock.h | ||
| typelib.h | ||
| violite.h | ||