Peter Dalgaard writes:
> [EMAIL PROTECTED] writes:
>
> > Full_Name: Ulrich Poetter
> > Version: 2.1.1
> > OS: i686-pc-linux-gnu FC2
> > Submission from: (NULL) (134.147.95.187)
> >
> >
> > as.data.frame() segfaults on lists with very many elements:
> >
> > > dfn <- rep(list(rep(0,2)),198000)
> > > test <- as.data.frame.list(dfn)
> >
> > Process R segmentation fault at Sun Sep 18 17:06:02 2005
>
> Not for me on FC4. The process size grows to about 180M and the system
> thrashes badly, but the calculation runs to completion.
>
> 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.
gdb says:
dfn <- rep(list(rep(0,2)),198000)
test <- as.data.frame.list(dfn)
Program received signal SIGSEGV, Segmentation fault.
0x08082416 in Rf_substituteList (el=0xa1c5634, rho=0x83ea668)
at coerce.c:1973
1973 coerce.c: No such file or directory.
in coerce.c
(gdb) bt
#0 0x08082416 in Rf_substituteList (el=0xa1c5634, rho=0x83ea668)
at coerce.c:1973
[snip]
(I don't have the source handy). I have forgotten to say that R was
compiled with gcc 3.3.3.
All the best,
Ulrich Poetter
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