SCX_TASK_NONE
case SCX_TASK_NONE:
warn = prev_state != SCX_TASK_NONE;
warn = prev_state == SCX_TASK_NONE;
case SCX_TASK_NONE:
scx_set_task_state(p, SCX_TASK_NONE);
if (scx_get_task_state(p) != SCX_TASK_NONE) {
SCX_ENUM_SET(skel, scx_task_state, SCX_TASK_NONE); \