On 14/02/17 02:42, Vinson Lee wrote: > GCC 7 -Wextra now enables -Wimplicit-fallthrough. > > https://gcc.gnu.org/gcc-7/changes.html Should now be fixed: http://git.ipxe.org/ipxe.git/commitdiff/5f85cbb I added explicit fall-throughs where needed rather than inhibit a potentially useful extra warning. Thanks! Michael