I must be out of date with my sources?
term% mk -k
8c -FVw render.c
render.c:289 not a member of struct/union: aux
render.c:290 not a member of struct/union: aux
render.c:291 not a member of struct/union: aux
mk: 8c -FVw render.c : exit status=rc 2491: 8c 2493: error
8c -FVw widget.c
widget.c:45 not a member of struct/union: aux
warning: widget.c:41 used and not set: t
widget.c:93 not a member of struct/union: aux
warning: widget.c:88 used and not set: t
mk: 8c -FVw widget.c : exit status=rc 2494: 8c 2496: error