On Tue, Mar 25, 2025 at 08:34:51PM +0800, Gwen Fu wrote: > I found out that "-fcheck=*" is an option for runtime checking, but the > relevant options are commented out. > OPT_fcheck_ = 1070, /* -fcheck= */ > /* OPT_fcheck_assert = 1071, */ /* -fcheck=assert */ > /* OPT_fcheck_bounds = 1072, */ /* -fcheck=bounds */ > /* OPT_fcheck_in = 1073, */ /* -fcheck=in */ > /* OPT_fcheck_invariant = 1074, */ /* -fcheck=invariant */ > /* OPT_fcheck_out = 1075, */ /* -fcheck=out */ > /* OPT_fcheck_switch = 1076, */ /* -fcheck=switch */ > OPT_fcheckaction_ = 1077, /* -fcheckaction= */ > OPT_fchecking = 1078, /* -fchecking */ > > And I tried : > $ gfortran -o fibonacci fabonaqi.f90 -fcheck=in > f951: Warning: command-line option ‘-fpreconditions’ is valid for D but not > for Fortran > $ gfortran --help=check > cc1: warning: unrecognized argument to ‘--help=’ option: ‘check’ > So what's wrong with these ?
Those options do not apply to gfortran, e.g., % find gcc/fortran -type f | xargs grep -i fcheck_invariant % find libgfortran -type f | xargs grep -i fcheck_invariant The gfortran manual tells you which keywords are supported: -fcheck=<all|array-temps|bits|bounds|do|mem|pointer|recursion> -- Steve
