[Bug c/86453] [8/9 Regression] error: type variant differs by TYPE_PACKED in free_lang_data since r255469

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86453

--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
Right.  The exclusion logic doesn't depend on no_add_attr; it uses it for the
same purpose as attribute handlers do: to prevent the rest of the framework
from applying them.  Maybe the exclusion should be done first, before calling
the handler, and the call to the handler avoided if the exclusion finds a
conflict.