https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65120
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> --- Btw, just saw > [ 2808s] ../drivers/xen/sfc_netfront/falcon_event.c:113:43: error: logical > not is only applied to the left hand side of comparison > [-Werror=logical-not-parentheses] > [ 2808s] BUG_ON(!QWORD_GET_U(RX_EV_BYTE_CNT, *ev) == 0); > [ 2808s] ^ which I think we should preserve - so make sure that the !! special-casing doesn't cover this case from macro expansion.