https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98531
--- Comment #4 from Iain Sandoe <iains at gcc dot gnu.org> --- (In reply to Nathan Sidwell from comment #3) > Oh, I see what you mean. > > FWIW this is the tip of a deceptively simple, but actually complex, iceberg. [for Darwin] These tests were working on the modules branch (although that might not be any help of course). IIRC - I did a small amount of debugging and found that (on Darwin) the underlying complaint was that it was not expecting a __cxa_xxxxxx function decl in the position that one appeared).