https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120845
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The more important is the
The last preprocessing token in the sequence is the first preprocessing token
within the sequence that is immediately followed by whitespace containing a
new-line character.
line before that.
So, for
export module my_module
[[this_is_a_useless_attribute]];
the last preprocessing token in the sequence is my_module and so it isn't a
valid preprocessing directive because export module must have ; as the last
preprocessing token.
