[Bug c++/68284] -Wlong-long causes dialect options to be ignored

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68284

--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
Er, that's the point of -Wlong-long, isn't it? -Wpedantic does adapt to the
dialect.