testlist <- list(idcskeep = c(-914727864L, 2079386245L, 153660219L, 1472010307L,  -1093196013L, 706519645L, 1527792595L, -1273424515L, -1821194737L,  1655739500L, -666917073L, -37784901L, -1768304960L, -1234166511L,  -2141133515L, 2046472717L, 1819811023L, 682638080L, -253612051L,  -1583175625L, 997718001L, -418118808L, 1978179054L, -498074801L,  -938008848L, -933629512L, 991995356L, -1035136002L, -1005916244L,  519181459L, -625900867L, 8195272L, -1792362147L, -2086005314L,  -893740403L, 128814028L, -1216710443L, 1837918535L, 1038812221L,  1745880829L, 985619133L, 1768913715L, 689291313L, -1035207303L,  -965390541L, 28867134L, -1551926517L, -1887368758L, 1080264617L,  -754721284L, 412954075L, -383101777L, -1616649568L, 1532813054L,  -614856085L, -619498212L, 1992082761L, -1079884072L, 1081324329L,  -1643653059L, -1413816826L, 381421042L, 370105842L, 579997336L,  1322508814L, 1982391990L, -1684414663L, -1598589109L, 1901417095L,  290945320L, 1725307528L, 1747460279L, -83704463L, 715859910L,  1141309412L, -1116327890L, -880625955L, -651229889L, 102745966L,  1206330690L, -353717228L, -1780753703L, -488980833L, 1357827612L,  1887762761L, -1275164487L, 491726948L, 911058464L, 945436109L ), nodect = c(156175549L, 1301575274L, -476131815L, -327927260L,  -814747387L, 2123898216L, -36396464L, 1526207331L, 1193222292L,  -1281884522L, 902606881L, 1089094927L, 1496782039L, NA, 115416416L,  -651050208L, 1357165572L, 2075302576L, 2118832831L, 873975437L,  1323525406L, 346352410L, -2046264737L, 960397450L, 573869725L,  -379209926L, 1931420839L), nodevars = c(1012966930L, -95814343L,  -670892689L, -2128527553L, -979755362L, -2103747181L, 1703024462L,  -867995896L, -1558897762L, 1578686262L, 450143643L, -152708421L,  2147047681L, -1799907847L, 967591685L, -273281389L, -886492886L,  1091067995L, -603523374L, -338588054L, -890803362L, -1644144680L,  -1382097508L, 1441476384L, 341854805L, 1756082245L, -1314449508L,  2024080962L, -1921933269L, 1928790815L, -1780368406L, -857011231L,  1263875764L, 15202737L, -1911534330L, -1236055997L, -974623177L,  -546154892L, 1393647391L, -60161976L, -1086849856L, 519401900L,  96449211L, 318439127L, -496169279L, -547080910L, 1989431666L,  -28132674L, -1984528729L, -1410378831L, -1375376191L, -9725727L,  -660102473L, 198699393L, 1815802986L, -1934743531L, 1705425936L,  -1777352380L, 338560275L, -1717635983L, 1167468624L, 1846661850L,  1271284952L, 1953361369L, 329968297L, -1179914546L), nrnodes = 1975479720L,      p = 700951563L, parents = c(468143159L, -1529745577L, 1049751220L,      1348164729L, 571049372L, 454619629L, -1413615902L, -145517550L,      987777503L, -1304873232L, -903568358L, 2130810017L, 169426469L,      825168605L, -335429661L), rowoffset = -1113302305L, varnodes = c(77470436L,      484058222L, -835858507L, 1668042617L, 338649647L, 214710137L,      -1134095747L, -1787462247L, 328695087L, 1906416959L, -831654863L,      -649876499L, 1913461887L, -648742763L, -1156967856L, 2140137874L,      644268439L, 123721430L, -859175003L, 246583936L, -1079050344L,      49753534L, 37686913L, -822602508L, 1591053158L, 878787584L,      742630714L, -164119883L, -423997720L, -1317296461L, -1145752183L,      -1387692533L, 503935315L, 1806521239L, -235286041L, 814455830L,      1173028855L, 1722133025L, 1524607495L, 673715015L, 847551133L,      854406179L, -435877353L, -1868157482L, -1859334665L, -763946964L,      1472345215L, -347617763L, -882853123L, 1324228660L, -215331965L,      -780576414L, -1524213385L, -1636719371L, 869823518L, 523975658L,      -1678382871L, -486007082L, 862542340L, -491559288L, -624951432L,      816016739L, 2078376602L, 482182584L, -1284660842L))
result <- do.call(iRF:::nodeVars,testlist)
str(result)