22 lines
580 B
C
22 lines
580 B
C
#include "time_impl.h"
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
|
|
struct tm *__localtime_r(const time_t *restrict t, struct tm *restrict tm)
|
|
{
|
|
/* Reject time_t values whose year would overflow int because
|
|
* __secs_to_zone cannot safely handle them. */
|
|
if (*t < INT_MIN * 31622400LL || *t > INT_MAX * 31622400LL) {
|
|
errno = EOVERFLOW;
|
|
return 0;
|
|
}
|
|
__secs_to_zone(*t, 0, &tm->tm_isdst, &tm->__tm_gmtoff, 0, &tm->__tm_zone);
|
|
if (__secs_to_tm((long long)*t + tm->__tm_gmtoff, tm) < 0) {
|
|
errno = EOVERFLOW;
|
|
return 0;
|
|
}
|
|
return tm;
|
|
}
|
|
|
|
weak_alias(__localtime_r, localtime_r);
|