http://gcc.gnu.org/bugzilla/show_bug.cgi?id=61126
--- Comment #6 from Tobias Burnus <burnus at gcc dot gnu.org> --- (In reply to Florian Weimer from comment #3) > (In reply to Matthias Klose from comment #2) > > -Wunused-parameter is enabled by -Wall. I'm surprised that -Wextra is used > > without -Wall, but it happens in the testsuite in more places. Actually, looking at gcc/common.opt, one finds: Wunused-parameter Common Var(warn_unused_parameter) Warning EnabledBy(Wunused && Wextra) Thus, in GCC - whether Fortran or C - it is enabled with -Wextra, but only if also -Wunused is used. The latter is implied by -Wall.
