Found the following significant warnings:
  ./TD_SD.h:26:15: warning: 'set_start_conditions' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:27:16: warning: 'is_still_gathering' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:40:23: warning: 'update_to_next_survival_measurement' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:45:15: warning: 'gather_effect' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:52:17: warning: 'calculate_current_survival' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TK_single_concentration.h:42:15: warning: 'update_to_next_concentration_measurement' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_IT.h:128:17: warning: 'calculate_current_survival' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
See '/home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/GUTS.Rcheck/00install.out' for details.
Found the following significant warnings:
  ./TD_SD.h:26:15: warning: 'set_start_conditions' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:27:16: warning: 'is_still_gathering' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:40:23: warning: 'update_to_next_survival_measurement' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:45:15: warning: 'gather_effect' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:52:17: warning: 'calculate_current_survival' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TK_single_concentration.h:42:15: warning: 'update_to_next_concentration_measurement' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_IT.h:128:17: warning: 'calculate_current_survival' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
See ‘/data/gannet/ripley/R/packages/tests-clang/GUTS.Rcheck/00install.out’ for details.
installed size is  5.9Mb
  sub-directories of 1Mb or more:
    extdata   2.5Mb
    libs      2.3Mb
Found the following significant warnings:
  ./TD_SD.h:26:15: warning: 'set_start_conditions' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:27:16: warning: 'is_still_gathering' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:40:23: warning: 'update_to_next_survival_measurement' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:45:15: warning: 'gather_effect' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:52:17: warning: 'calculate_current_survival' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TK_single_concentration.h:42:15: warning: 'update_to_next_concentration_measurement' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_IT.h:128:17: warning: 'calculate_current_survival' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
See ‘/Volumes/Builds/packages/big-sur-arm64/results/4.1/GUTS.Rcheck/00install.out’ for details.
installed size is  6.6Mb
  sub-directories of 1Mb or more:
    extdata   2.5Mb
    libs      3.1Mb
Found the following significant warnings:
  ./TD_SD.h:26:15: warning: 'set_start_conditions' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:27:16: warning: 'is_still_gathering' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:40:23: warning: 'update_to_next_survival_measurement' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:45:15: warning: 'gather_effect' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:52:17: warning: 'calculate_current_survival' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TK_single_concentration.h:42:15: warning: 'update_to_next_concentration_measurement' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_IT.h:128:17: warning: 'calculate_current_survival' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
See ‘/Volumes/Builds/packages/high-sierra-x86_64/results/4.1/GUTS.Rcheck/00install.out’ for details.
installed size is  6.2Mb
  sub-directories of 1Mb or more:
    extdata   2.5Mb
    libs      2.7Mb
installed size is  6.0Mb
  sub-directories of 1Mb or more:
    extdata   2.5Mb
    libs      2.4Mb
Found the following significant warnings:
  ./TD_SD.h:26:15: warning: 'set_start_conditions' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:27:16: warning: 'is_still_gathering' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:40:23: warning: 'update_to_next_survival_measurement' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:45:15: warning: 'gather_effect' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_SD.h:52:17: warning: 'calculate_current_survival' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TK_single_concentration.h:42:15: warning: 'update_to_next_concentration_measurement' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
  ./TD_IT.h:128:17: warning: 'calculate_current_survival' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
See ‘/Volumes/Builds/packages/high-sierra-x86_64/results/4.0/GUTS.Rcheck/00install.out’ for details.
installed size is  6.2Mb
  sub-directories of 1Mb or more:
    extdata   2.5Mb
    libs      2.7Mb
installed size is  6.0Mb
  sub-directories of 1Mb or more:
    extdata   2.5Mb
    libs      2.4Mb