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---1903393524-2062424977-1127399140=:32170 Content-Type: TEXT/PLAIN; charset=X-UNKNOWN; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE The problem is a deep recursion in substituteList, presumably from=20 substitute(list(...)) in data.frame(). This overflows the stack for large= =20 enough lists. Presumably the only solution is to rewrite substituteList=20 iteratively. =09-thomas On Tue, 20 Sep 2005, Thomas Lumley wrote: > > Under Valgrind on x86_64 I get > =3D=3D27405=3D=3D Access not within mapped region at address 0x33FFEFD8 > =3D=3D27405=3D=3D at 0x447045: Rf_substituteList (coerce.c:2003) > =3D=3D27405=3D=3D Stack overflow in thread 1: can't grow stack to 0x33FFE= F98 > > > =09-thomas > > On Sun, 18 Sep 2005, Peter Dalgaard wrote: > >> [EMAIL PROTECTED] writes: >>=20 >>> Full_Name: Ulrich Poetter >>> Version: 2.1.1 >>> OS: i686-pc-linux-gnu FC2 >>> Submission from: (NULL) (134.147.95.187) >>>=20 >>>=20 >>> as.data.frame() segfaults on lists with very many elements: >>>=20 >>>> dfn <- rep(list(rep(0,2)),198000) >>>> test <- as.data.frame.list(dfn) >>>=20 >>> Process R segmentation fault at Sun Sep 18 17:06:02 2005 >>=20 >> Not for me on FC4. The process size grows to about 180M and the system >> thrashes badly, but the calculation runs to completion. >>=20 >> It's not unlikely that we are ignoring a failed allocation somewhere, >> but there's not much hope of finding it from the available >> information. You could try running under gdb and see where things go >> wrong for you. >>=20 >> -- >> O__ ---- Peter Dalgaard =D8ster Farimagsgade 5, Entr.B >> c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K >> (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327= 918 >> ~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45)=20 >> 35327907 >>=20 >> ______________________________________________ >> R-devel@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-devel >>=20 > > Thomas Lumley=09=09=09Assoc. Professor, Biostatistics > [EMAIL PROTECTED] of Washington, Seattle Thomas Lumley=09=09=09Assoc. Professor, Biostatistics [EMAIL PROTECTED] of Washington, Seattle ---1903393524-2062424977-1127399140=:32170-- ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
