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Merge mysql.com:/home/cps/mysql/trees/5.0-runtime-bug9191

Browse source 
into  mysql.com:/home/cps/mysql/trees/5.1-runtime-bug9191
This commit is contained in:
petr/cps@owlet.local 2006-11-01 18:18:01 +03:00
commit 3df8165cf9
16 changed files with 356 additions and 68 deletions
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30
include/my_time.h
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@ -43,6 +43,12 @@ typedef long my_time_t;
#define MY_TIME_T_MAX LONG_MAX
#define MY_TIME_T_MIN LONG_MIN
/* Time handling defaults */
#define TIMESTAMP_MAX_YEAR 2038
#define TIMESTAMP_MIN_YEAR (1900 + YY_PART_YEAR - 1)
#define TIMESTAMP_MAX_VALUE INT_MAX32
#define TIMESTAMP_MIN_VALUE 1
/* two-digit years < this are 20..; >= this are 19.. */
#define YY_PART_YEAR 70
/* apply above magic to years < this */
@ -76,6 +82,30 @@ uint calc_days_in_year(uint year);
void init_time(void);
/*
Function to check sanity of a TIMESTAMP value
DESCRIPTION
Check if a given MYSQL_TIME value fits in TIMESTAMP range.
This function doesn't make precise check, but rather a rough
estimate.
RETURN VALUES
FALSE The value seems sane
TRUE The MYSQL_TIME value is definitely out of range
*/
static inline bool validate_timestamp_range(const MYSQL_TIME *t)
{
if ((t->year > TIMESTAMP_MAX_YEAR || t->year < TIMESTAMP_MIN_YEAR) ||
(t->year == TIMESTAMP_MAX_YEAR && (t->month > 1 || t->day > 19)) ||
(t->year == TIMESTAMP_MIN_YEAR && (t->month < 12 || t->day < 31)))
return FALSE;
return TRUE;
}
my_time_t
my_system_gmt_sec(const MYSQL_TIME *t, long *my_timezone,
my_bool *in_dst_time_gap);