https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78989
--- Comment #4 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
...or to use a rich location to send two locations for the warning, giving:
return (asan_poison_variables &&
^~
# 6 "gimplify.cpp" 3 4
__null
~~~~~~
);
and for the logic that uses diagnostic_report_warnings_p to check all locations
in the rich location, requiring all to be within a system header for the
warning to be rejected.
