[R-pkg-devel] gcc-san check warns for non-portable flags

Dear fellow package developers,

There were multiple issues with a package I maintain: @CRAN: <https://cran.r-project.org/package=adfExplorer> @source: <https://github.com/pepijn-devries/adfExplorer/>. As far as I can tell all issues listed @CRAN were fixed in the latest version (available from GitHub and R-Universe). However, when submitting to CRAN, the special gcc san check complains about non-portable flags (see below).

I cannot reproduce this warning myself. As far as I can tell, I don't set these flags myself (neither in the configure script nor in makevars.in). I suspect that these flags are set by the machine that performs the checks. How do I pass this check? Or should I report it to CRAN as a false negative result?

Many thanks for your help.

Kind regards,

Pepijn

Flavor: r-devel-windows-x86_64, r-devel-linux-x86_64-debian-special-clang-san
Check: *, Result: OK
 ?
Flavor: r-devel-linux-x86_64-debian-special-gcc-san
Check: compilation flags used, Result: WARNING
?Compilation used the following non-portable flag(s):
 ? ?'-Wno-deprecated-declarations' '-Wno-ignored-attributes'
 ? ?'-Wno-stringop-truncation'
 ?including flag(s) suppressing warnings