http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11393
--- Comment #26 from Manuel López-Ibáñez <manu at gcc dot gnu.org> 2012-10-26 01:53:59 UTC --- > (In reply to comment #24) > > So, in g++ parlance, "b" and "d" is a pedwarn enabled by default, while "c" > > is > > a pedwarn in c++98 mode enabled by -Wpedantic and nothing in c++11 mode. > > Which makes sense, because "c" is not valid C++98 but is valid C++11 > > I think referring to what's actually valid according to the standard is > useful, > rather than inferring it from what other compilers do. > > My suggestion would be do nothing and lose the PR. If you want a warning in > C++98 use -pedantic, which is consistent with other GNU extensions. In C++11 > use constexpr. But -pedantic is creating an error, which is not what one would expect. Moreover, it is creating an error for something that is accepted without -pedantic and accepted by C++11, and has well-defined semantics, so it could be perfectly accepted as a GNU extension (which is what clang does). Anyway, I am not going to work on this, and I guess we scared Paolo, so someone else would have to fix the above, if they care. But it is definitely a bug.
