VTM_ISDST_INITVAL 1407 time.c             tm.tm_isdst = vtm->isdst == VTM_ISDST_INITVAL ? -1 : vtm->isdst;
VTM_ISDST_INITVAL 1995 time.c             vtm.isdst = VTM_ISDST_INITVAL;
VTM_ISDST_INITVAL 2561 time.c         	vtm->isdst = VTM_ISDST_INITVAL;