An example of a superordinate goal is:

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An exаmple оf а superоrdinаte gоal is:

Cоnsider the fоllоwing multi-threаded C code: 1. enum chаnnel_stаtus channel_close(channel_t* channel) 2. { 3. pthread_mutex_lock(&channel->mutex); 4. if (channel->closed) { 5. pthread_mutex_unlock(&channel->mutex); 6. return CLOSED_ERROR; 7. } 8. channel->closed = true; 9. pthread_cond_broadcast(&channel->recv_cond); 10.   pthread_cond_broadcast(&channel->send_cond);11. pthread_mutex_unlock(&channel->mutex); 12. return SUCCESS; 13. } 14. enum channel_status channel_receive(channel_t* channel, void** data) 15. { 16. pthread_mutex_lock(&channel->mutex); 17. if (channel->closed) {18. pthread_mutex_unlock(&channel->mutex); 19. return CLOSED_ERROR; 20. } 21. while (buffer_current_size(channel->buffer) == 0) { 22. pthread_cond_wait(&channel->recv_cond, &channel->mutex); 23. }24. if (channel->closed){25.   pthread_mutex_unlock(&channel->mutex);26.  return CLOSED_ERROR;27. } 28.   pthread_cond_signal(&channel->send_cond);29. buffer_remove(channel->buffer, data); 30. pthread_mutex_unlock(&channel->mutex); 31. return SUCCESS; 32. } Select the best steps for exposing the bug in this code. Assume line ranges are inclusive. Step 1: [step1] Step 2: [step2] Step 3: [step3]