[Rcpp-devel] Possible regression in R-3.2.3 or Rcpp 0.12.3

[Paul Johnson]

Thanks.

On Thu, Jan 28, 2016 at 2:42 PM, Dirk Eddelbuettel <edd at debian.org> wrote:
>
> Paul,
>
> I can reproduce the segfault on Ubuntu 15.10, "everything current".
> Definitely a valid bug report, though a 30mb xlsx may not qualify as
> minimal.
>
I'm glad I did not attach it to an email, then :)

The data xlsx provided by the client is about 2 times as big, I had a
GRA whittled it down for your entertainment.

If we whittle xlsx file down to a few lines, it does not seg fault, apparently.

I'm going crazy trying to downgrade R in Ubuntu see where that leads.
I was using 3.2.2 until a couple of days ago and I never saw a hint of
trouble from Rcpp or openxlsx.

> I won't have time to look at this for a while though so if you find that
> downgrading helps that may be your best bet.
>
> Thanks for the report.  I am so used to simple segfaults from ABI mixings
> (g++-5.* will do that for you...) that I called this wrongly at first.
>
> Dirk
>
> /tmp/pj/openxlsx_failure$ Rscript
> Reproducible_openxlsx_failure.R
> R version 3.2.3 (2015-12-10)
> Platform: x86_64-pc-linux-gnu (64-bit)
> Running under: Ubuntu 15.10
>
> locale:
>  [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
>  LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
>  LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8    LC_PAPER=en_US.UTF-8
>   [8] LC_NAME=C                  LC_ADDRESS=C               LC_TELEPHONE=C
>  LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  base
>
> other attached packages:
> [1] openxlsx_3.0.0
>
> loaded via a namespace (and not attached):
> [1] Rcpp_0.12.3.1 methods_3.2.3
>
>  *** caught segfault ***
>  address 0x7fd5b83d8038, cause 'memory not mapped'
>
> Traceback:
>  1: .Call("openxlsx_readWorkbook", v, r, string_refs, isDate, nRows,
>  colNames, skipEmptyRows, origin, clean_names, PACKAGE = "openxlsx")
>  2: read.xlsx.default("Failure_to_Import.xlsx", colNames = TRUE)
>  3: read.xlsx("Failure_to_Import.xlsx", colNames = TRUE)
> aborting ...
>
>
> --
> http://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org



-- 
Paul E. Johnson
Professor, Political Science        Director
1541 Lilac Lane, Room 504      Center for Research Methods
University of Kansas                 University of Kansas
http://pj.freefaculty.org              http://crmda.ku.edu