https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65780
--- Comment #29 from Jeffrey A. Law <law at redhat dot com> --- Oh how I wish all this stuff was better documented, both in the GCC sources and at a higher level in some linkers/loaders documentation. ix86_binds_local_p needs a function comment. I think with a function comment, no comments would be needed in the function body. I think it's also advisable to get a function comment for the default_binds_local* that don't currently have one. What I'm trying to wrap my head around is what "defined_locally" really means. Is it a "must" or "maybe" property when it gets set in default_binds_local_p_3? If it's a must property, then "common_maybe_local" seems mis-named and/or mis-used (the former seems most likely to me). If it's a maybe property, then why is a common uninit local filtered out? At this point we don't know if a common uninit local will be defined locally or not, so it's a maybe. I can probably go forward with an approval or specific change recommendations that would lead to approval once someone can tell me if defined_locally is a maybe or must property.