https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64826
--- Comment #1 from Ben Longbons <b.r.longbons at gmail dot com> --- Created attachment 34597 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34597&action=edit test set 2, regressions on namespace merging (I don't understand this)