Found the following significant warnings:
  /usr/include/bits/stdio2.h:54:35: warning: null destination pointer [-Wformat-truncation=]
See ‘/data/gannet/ripley/R/packages/tests-devel/phreeqc.Rcheck/00install.out’ for details.
* used C compiler: ‘gcc-15 (GCC) 15.1.0’
* used C++ compiler: ‘g++-15 (GCC) 15.1.0’
installed size is 48.2Mb
  sub-directories of 1Mb or more:
    libs  47.1Mb
installed size is 49.1Mb
  sub-directories of 1Mb or more:
    libs  47.9Mb