Found the following significant warnings:
  /data/gannet/ripley/R/test-dev/RcppCGAL/include/CGAL/Polynomial_traits_d.h:1059:58: warning: 'SR.54329' is used uninitialized [-Wuninitialized]
See ‘/data/gannet/ripley/R/packages/tests-devel/resultant.Rcheck/00install.out’ for details.
* used C++ compiler: ‘g++-15 (GCC) 15.1.0’
installed size is 42.1Mb
  sub-directories of 1Mb or more:
    libs  42.0Mb
installed size is 33.5Mb
  sub-directories of 1Mb or more:
    libs  33.3Mb