1#include "time_impl.h"
2#include <errno.h>
3#include <limits.h>
4
5struct tm *__localtime_r(const time_t *restrict t, struct tm *restrict tm)
6{
7 /* Reject time_t values whose year would overflow int because
8 * __secs_to_zone cannot safely handle them. */
9 if (*t < INT_MIN * 31622400LL || *t > INT_MAX * 31622400LL) {
10 errno = EOVERFLOW;
11 return 0;
12 }
13 __secs_to_zone(*t, 0, &tm->tm_isdst, &tm->__tm_gmtoff, 0, &tm->__tm_zone);
14 if (__secs_to_tm((long long)*t + tm->__tm_gmtoff, tm) < 0) {
15 errno = EOVERFLOW;
16 return 0;
17 }
18 return tm;
19}
20
21weak_alias(__localtime_r, localtime_r);