Found the following significant warnings:
  svm/svm_basic.cpp:7:49: warning: field 'nSV' will be initialized after field 'libsvm_class_weights' [-Wreorder]
  ../inst/include/gng/gng_lazy_error_heap.h:67:4: warning: field 'm_buffer_size' will be initialized after base 'gmum::GNGLazyErrorHeap::super' (aka 'Heap<gmum::ErrorNode>') [-Wreorder]
  gng/gng_algorithm.cpp:85:12: warning: field 'g_db' will be initialized after field 'c' [-Wreorder]
  gng/gng_algorithm.cpp:85:22: warning: field 'c' will be initialized after field 's' [-Wreorder]
  gng/gng_algorithm.cpp:85:28: warning: field 's' will be initialized after field 'm_max_nodes' [-Wreorder]
  gng/gng_algorithm.cpp:85:34: warning: field 'm_max_nodes' will be initialized after field 'm_max_age' [-Wreorder]
  gng/gng_algorithm.cpp:86:31: warning: field 'm_betha' will be initialized after field 'm_lambda' [-Wreorder]
  gng/gng_algorithm.cpp:88:11: warning: field 'errorHeap' will be initialized after field 'dim' [-Wreorder]
  gng/gng_algorithm.cpp:88:24: warning: field 'dim' will be initialized after field 'm_toggle_uniformgrid' [-Wreorder]
  gng/gng_algorithm.cpp:90:30: warning: field 'm_utility_option' will be initialized after field 'm_mean_error' [-Wreorder]
  gng/gng_algorithm.cpp:91:42: warning: field 'm_utility_k' will be initialized after field 'max_iter' [-Wreorder]
  gng/gng_algorithm.cpp:92:37: warning: field 'm_logger' will be initialized after field 'm_iteration' [-Wreorder]
  ../inst/include/gng/uniform_grid.hpp:350:18: warning: field 'gng_dim' will be initialized after field 'm_density_threshold' [-Wreorder]
  ../inst/include/gng/gng_dataset.h:94:19: warning: field 'store_extra_' will be initialized after field 'dim_' [-Wreorder]
  ../inst/include/gng/gng_dataset.h:94:57: warning: field 'access_method_' will be initialized after field 'current_example_' [-Wreorder]
  ../inst/include/gng/gng_graph.hpp:24:9: warning: field 'maximum_index' will be initialized after field 'mutex' [-Wreorder]
  ../inst/include/gng/gng_graph.hpp:24:42: warning: field 'gng_dim' will be initialized after field 'first_free' [-Wreorder]
  ../inst/include/gng/gng_graph.hpp:24:72: warning: field 'nodes' will be initialized after field 'dist_fnc' [-Wreorder]
See ‘/home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/gmum.r.Rcheck/00install.out’ for details.