Found the following significant warnings:
  stsc.cpp:193:45: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  stsc.cpp:348:29: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  stsc.cpp:880:39: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  stsc_parallel.cpp:237:31: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  stsc_parallel.cpp:390:28: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  stsc_parallel.cpp:936:37: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
  tvc.cpp:185:45: warning: ‘bool arma::is_finite(eT, const typename arma_scalar_only<T>::result*) [with eT = double; typename arma_scalar_only<T>::result = double]’ is deprecated: change arma::is_finite(val) to std::isfinite(val) [-Wdeprecated-declarations]
See ‘/data/gannet/ripley/R/packages/tests-devel/hdflex.Rcheck/00install.out’ for details.
* used C compiler: ‘gcc (GCC) 15.1.1 20250521 (Red Hat 15.1.1-2)’
* used C++ compiler: ‘g++ (GCC) 15.1.1 20250521 (Red Hat 15.1.1-2)’