Full_Name: Liam Gretton
Version: 2.9.2
OS: openSUSE 11.1 (x86_64)
Submission from: (NULL) (143.210.13.77)
Reading a large number of rows of delimited data via the clipboard results in a
segfault or double free error. I've tested copying from various applications,
but gedit will do.
This problem exists in the openSUSE-supplied 2.8.1, I've just built 2.9.2 to see
if it's still there, and it is.
I can provide an example delimited file which demonstrates the problem; it
contains about 18000 rows and 7 columns of data. read.delim("clipboard") tends
to fail when only reading ~1500 rows, though I haven't been able to reproduce
the point at which it fails.
Reading exactly the same data from a file using read.csv("file.csv") is
successful.
Problem reproduced as so:
Data copied to the clipboard in Gnome.
> R
R version 2.9.2 (2009-08-24)
[snip]
> data <- read.delim("clipboard")
*** caught segfault ***
address 0x18, cause 'memory not mapped'
Traceback:
1: file(file, "r")
2: read.table(file = file, header = header, sep = sep, quote = quote, dec =
dec, fill = fill, comment.char = comment.char, ...)
3: read.delim("clipboard")
Possible actions:
1: abort (with core dump, if enabled)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace
On a different (but similar) openSUSE 11.1 system, the command still fails but
reports:
*** glibc detected *** /usr/local/R-2.9.2/lib64/R/bin/exec/R: double free of
corruption (!prev): 0x000000000097cb70 ***
Details of R build:
./configure --prefix=/usr/local/R-2.9.2 --enable-R-shlib --enable-mbcs
--enable-threads=posix --with-blas --with-lapack --with-system-zlib
--with-system-bzlib --with-system-pcre --with-gnu-ld
No additional packages installed. 'make check' passed.
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