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#define _GNU_SOURCE
#include "time_impl.h"
#include <errno.h>
extern const char __gmt[];
time_t timegm(struct tm *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;
}
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