FALLTHROUGH
if (e == FALLTHROUGH && insn_state[t] >= (DISCOVERED | FALLTHROUGH))
ret = push_insn(t, t + insn_sz, FALLTHROUGH, env);
return push_insn(t, t + insn_sz, FALLTHROUGH, env);
ret = push_insn(t, t + off + 1, FALLTHROUGH, env);
ret = push_insn(t, t + 1, FALLTHROUGH, env);