Function clamp_hole_destination

src/trap.c:592–599

limit the destination of a hole or trapdoor to the furthest level you should be able to fall to */

/* limit the destination of a hole or trapdoor to the furthest level you
   should be able to fall to */
d_level *
clamp_hole_destination(d_level *dlev)
{
    int bottom = dng_bottom(dlev);

    dlev->dlevel = min(dlev->dlevel, bottom);
    return dlev;
}

void
fall_through(