| #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); |