#define _GNU_SOURCE
-#include <time.h>
+#include "time_impl.h"
+#include <errno.h>
-#include "__time.h"
+extern const char __gmt[];
time_t timegm(struct tm *tm)
{
- return __tm_to_time(tm);
+ struct tm new;
+ long long t = __tm_to_secs(tm);
+ if (__secs_to_tm(t, &new) < 0) {
+ errno = EOVERFLOW;
+ return -1;
+ }
+ *tm = new;
+ tm->tm_isdst = 0;
+ tm->__tm_gmtoff = 0;
+ tm->__tm_zone = __gmt;
+ return t;
}