https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70650
--- Comment #15 from Jason Merrill <jason at gcc dot gnu.org> --- (In reply to Jack Howarth from comment #14) > (In reply to Jason Merrill from comment #13) > Is darwin the only target using TREE_TYPE rather than DECL_ARG_TYPE? No, that should be the same for all targets; I don't know why this would affect darwin and not linux.