[Rcpp-devel] UBSAN warning

[Timothy]

Hi,

I maintain a package on CRAN. Recently I posted an update and was asked
about UBSAN warning produced during checks of the previous version:
https://www.stats.ox.ac.uk/pub/bdr/memtests/clang-UBSAN/kernelboot/tests/testthat.Rout
It is not clear for me where does the warning come from, could you give me
some hints what could it be? The warning message seems to relate to Rcpp
itself, isn't it? If not, what is the best way of diagnosing causes of such
warnings?

Thanks in advance,
Timothy
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