On 23/05/2020 07:38, Simon Urbanek wrote:
Adrian,
newer compilers are better at finding bugs - you may want to read the full
trace of the error, it tells you that you likely have a memory overflow when
using strncpy() in your package. You should check whether it is right.
Unfortunately we can’t help you more specifically, because I don't see any link
to what you submitted so can’t look at the code involved.
NB: debian-gcc on CRAN does have the latest version of gcc (10.1) and
the link would likely have given fuller details (such links are provided
on CRAN report pages but I do not know for submissions).
gcc does sometimes give false alarms here (there is one for R with gcc
>= 9 and another for gcc >= 10) but see
https://developers.redhat.com/blog/2018/05/24/detecting-string-truncation-with-gcc-8/
. Most can easily be workaround by cleaner code.
Cheers,
Simon
On May 22, 2020, at 7:25 PM, Adrian Dușa <dusa.adr...@gmail.com> wrote:
I am trying to submit a package on CRAN, and everything passes ok on all platforms but
Debian, where CRAN responds with an automatic "significant" warning:
* checking whether package ‘QCA’ can be installed ... [35s/35s] WARNING
Found the following significant warnings:
/usr/include/x86_64-linux-gnu/bits/string_fortified.h:106:10: warning:
‘__builtin_strncpy’ output may be truncated copying 12 bytes from a string of
length 79 [-Wstringop-truncation]
See ‘/srv/hornik/tmp/CRAN/QCA.Rcheck/00install.out’ for details.
I know the cause of this: using a cursomized version of some external C library,
coupled with <SystemRequirements: GNU make> in the Description.
But I do not know hot to get past this warning, since it refers to a builtin
GCC function strncpy. As far as I read, this should be solved by a simple GCC
upgrade to the newest version, but that is something outside my code base,
since GCC resides on the CRAN servers.
In the meantime, to get the package published, did anyone encountered a similar
problem? If so, is there a workaround?
—
Adrian Dusa
University of Bucharest
Romanian Social Data Archive
Soseaua Panduri nr. 90-92
050663 Bucharest sector 5
Romania
https://adriandusa.eu
--
Brian D. Ripley, rip...@stats.ox.ac.uk
Emeritus Professor of Applied Statistics, University of Oxford
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