Dear List
I'm trying to duplicate a warning CRAN is seeing on the additional checks
for gcc-UBSAN. That is using:
CRAN's gcc-UBSAN:
* using R Under development (unstable) (2024-12-04 r87420)
* using platform: x86_64-pc-linux-gnu
* R was compiled by
gcc-14 (GCC) 14.2.0
GNU Fortran (GCC) 14.2.0
* running under: Fedora Linux 36 (Workstation Edition)
And gave warnings like.
input2.c:863:5: warning: ‘__builtin_strncpy’ output may be truncated
copying 225 bytes from a string of length 255 [-Wstringop-truncation]
To try and duplicate, I added a src/Makevars with
PKG_CFLAGS = -Wstringop-truncation
And ran in two different docker images:
Docker #1 (fedora:40)
* using R version 4.4.2 (2024-10-31)
* using platform: aarch64-redhat-linux-gnu
* R was compiled by
gcc (GCC) 14.2.1 20240912 (Red Hat 14.2.1-3)
GNU Fortran (GCC) 14.2.1 20240912 (Red Hat 14.2.1-3)
* running under: Fedora Linux 40 (Container Image)
Docker #2 (thanks to Tomas Kalibera)
* using R Under development (unstable) (2024-12-02 r87417)
* using platform: aarch64-unknown-linux-gnu
* R was compiled by
gcc (Debian 14.2.0-8) 14.2.0
GNU Fortran (Debian 14.2.0-8) 14.2.0
* running under: Debian GNU/Linux trixie/sid
The flag appears in 00install.out, but the warning doesn't get raised.
Any ideas on how to duplicate?
Thanks,
Brad
PS checks for my package are here:
https://www.stats.ox.ac.uk/pub/bdr/memtests/gcc-UBSAN/epanet2toolkit/00check.log
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