Found the following significant warnings:
  src/core/attributes/date.hpp:1189:13: warning: identifier '_d' preceded by whitespace in a literal operator declaration is deprecated [-Wdeprecated-literal-operator]
  src/core/attributes/date.hpp:1191:13: warning: identifier '_y' preceded by whitespace in a literal operator declaration is deprecated [-Wdeprecated-literal-operator]
  src/core/attributes/date.hpp:2195:13: warning: identifier '_d' preceded by whitespace in a literal operator declaration is deprecated [-Wdeprecated-literal-operator]
  src/core/attributes/date.hpp:2203:13: warning: identifier '_y' preceded by whitespace in a literal operator declaration is deprecated [-Wdeprecated-literal-operator]
See ‘/home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/multinet.Rcheck/00install.out’ for details.
* used C++ compiler: ‘Debian clang version 19.1.7 (1+b1)’
Found the following significant warnings:
  src/core/attributes/date.hpp:1189:13: warning: identifier '_d' preceded by whitespace in a literal operator declaration is deprecated [-Wdeprecated-literal-operator]
  src/core/attributes/date.hpp:1191:13: warning: identifier '_y' preceded by whitespace in a literal operator declaration is deprecated [-Wdeprecated-literal-operator]
  src/core/attributes/date.hpp:2195:13: warning: identifier '_d' preceded by whitespace in a literal operator declaration is deprecated [-Wdeprecated-literal-operator]
  src/core/attributes/date.hpp:2203:13: warning: identifier '_y' preceded by whitespace in a literal operator declaration is deprecated [-Wdeprecated-literal-operator]
See ‘/data/gannet/ripley/R/packages/tests-clang/multinet.Rcheck/00install.out’ for details.
* used C++ compiler: ‘clang version 20.1.0’
installed size is 98.0Mb
  sub-directories of 1Mb or more:
    libs  97.7Mb
installed size is 97.5Mb
  sub-directories of 1Mb or more:
    libs  97.3Mb
installed size is 98.0Mb
  sub-directories of 1Mb or more:
    libs  97.7Mb
installed size is 97.5Mb
  sub-directories of 1Mb or more:
    libs  97.3Mb