334   DST* after = NULL;  in ProbeDST()  local
343       if (after == NULL || after->end_sec > dst_[i].end_sec) {  in ProbeDST()
344         after = &dst_[i];  in ProbeDST()
352     before = InvalidSegment(before_) ? before_ : LeastRecentlyUsedDST(after);  in ProbeDST()
354   if (after == NULL) {  in ProbeDST()
355     after = InvalidSegment(after_) && before != after_  in ProbeDST()
360   ASSERT(after != NULL);  in ProbeDST()
361   ASSERT(before != after);  in ProbeDST()
363   ASSERT(InvalidSegment(after) || time_sec < after->start_sec);  in ProbeDST()
364   ASSERT(InvalidSegment(before) || InvalidSegment(after) ||  in ProbeDST()
365          before->end_sec < after->start_sec);  in ProbeDST()
368   after_ = after;  in ProbeDST()