1#include "libc.h"
2#include "time_impl.h"
3#include <errno.h>
4
5struct tm* __gmtime_r(const time_t* restrict, struct tm* restrict);
6
7struct tm* __localtime_r(const time_t* restrict t, struct tm* restrict tm) {
8    //TODO(kulakowski): remove when timezone lookup works
9    return __gmtime_r(t, tm);
10
11    /* Reject time_t values whose year would overflow int because
12     * __secs_to_zone cannot safely handle them. */
13    if (*t < INT_MIN * 31622400LL || *t > INT_MAX * 31622400LL) {
14        errno = EOVERFLOW;
15        return 0;
16    }
17    __secs_to_zone(*t, 0, &tm->tm_isdst, &tm->__tm_gmtoff, 0, &tm->__tm_zone);
18    if (__secs_to_tm((long long)*t + tm->__tm_gmtoff, tm) < 0) {
19        errno = EOVERFLOW;
20        return 0;
21    }
22    return tm;
23}
24
25weak_alias(__localtime_r, localtime_r);
26