[Rd] capture.output() is trying to allocate 17179869182.6 Gb on my not so big data.frame

[Martin Maechler]

>>>>> Martin Morgan <mtmorgan at fhcrc.org>
>>>>>     on Tue, 7 Feb 2012 19:31:41 -0800 writes:

    > On 02/07/2012 04:08 PM, Hervé Pagès wrote:
    >> Hi,
    >> 
    >> This is what I get with recent R devel on a 64-bit Ubuntu laptop:
    >> 
    >> > mydf <- data.frame(a=1:2080, b=1001:2040, c=letters, d=LETTERS,
    >> e=1:1040)
    >> > mydf_in_a_character_vector <- capture.output(mydf)
    >> Error in print.default(m, ..., quote = quote, right = right) :
    >> cannot allocate memory block of size 17179869182.6 Gb

    > The error is thrown inside src/main/printarray.c:425

    > Rprintf("%*s%s", R_print.gap, "",
    >         EncodeString(x[i + j * r], w[j], quote, right));

    > where the array w is the result of an unPROTECTed allocation earlier in
    > the function, and a garbage collection triggered in MatrixRowLabel (in
    > this case; allocation also occurs in MatrixColLabel, Rprintf).
    > PROTECTion seems to have been implemented in the file assuming that the
    > only allocations are at the head of the function; the return in the
    > _PRINT_DEAL_c_eq_0 macro makes it difficult to balance the protection
    > stack, and R_alloc seems to be a better solution anyway. 

yes, I think so too.

    > diff attached.

I'm testing that and will commit.. if things seem fine.
Martin Maechler

    > Martin Morgan

    >> 
    >> I get something similar with R 2.14.1.
    >> 
    >> Cheers,
    >> H.
    >> 
    >> > sessionInfo()
    >> R Under development (unstable) (2012-01-16 r58124)
    >> Platform: x86_64-unknown-linux-gnu (64-bit)
    >> 
    >> locale:
    >> [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
    >> [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
    >> [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
    >> [7] LC_PAPER=C LC_NAME=C
    >> [9] LC_ADDRESS=C LC_TELEPHONE=C
    >> [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
    >> 
    >> attached base packages:
    >> [1] stats graphics grDevices utils datasets methods base
    >> 


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    > Fred Hutchinson Cancer Research Center
    > 1100 Fairview Ave. N. PO Box 19024 Seattle, WA 98109

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