pthread_t self;
if (m->_m_type != PTHREAD_MUTEX_NORMAL) {
+ if (!m->_m_lock)
+ return EPERM;
self = __pthread_self();
if ((m->_m_lock&0x1fffffff) != self->tid)
- return EPERM;
+ return EPERM;
if ((m->_m_type&3) == PTHREAD_MUTEX_RECURSIVE && --m->_m_count)
return 0;
if (m->_m_type >= 4) {