https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80529
--- Comment #8 from Eric Gallager <egallager at gcc dot gnu.org> --- My previous arguments for having a flag for this have been in the positive form, i.e., so that it can be enabled separately, but I'd also like to state it in its negative form, i.e., so that one can do -std=c89 -pedantic -Wno-c++-style-comment to get the rest of the C89 pedwarns without also getting the warnings for C++ style comments.
