https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103629
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Mathieu Malaterre from comment #5) > (In reply to Andrew Pinski from comment #4) > > (In reply to Mathieu Malaterre from comment #3) > > > $ export CXXFLAGS=-fvisibility=hidden > > > > Yes you can't just use -fvisibility=hidden without the source being ready > > for it. > > Andrew, could you please be a bit more specific. I do not see any changes > related to duplicate `typeinfo` or `visibility=hidden` in the changelog: > > * https://gcc.gnu.org/gcc-11/changes.html right there has been no major changes in this area as far as I Know. > > `-fvisibility=hidden` was added in 2015 in the Debian/OpenVDB package and > has worked quite well for all users so far. It would be nice if gcc/ld would > help track any `type_info` issue, in large portable c++ codebase. It was working by accident before. Do you know why it was added? Has the code upstream in OpenVDB been fixed for adding the visibility attribute where needed?
