diff options
Diffstat (limited to 'src/thread/pthread_mutex_unlock.c')
| -rw-r--r-- | src/thread/pthread_mutex_unlock.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/thread/pthread_mutex_unlock.c b/src/thread/pthread_mutex_unlock.c index 42837516..46761d9a 100644 --- a/src/thread/pthread_mutex_unlock.c +++ b/src/thread/pthread_mutex_unlock.c @@ -21,8 +21,11 @@ int pthread_mutex_unlock(pthread_mutex_t *m) self->robust_list.pending = &m->_m_next; __vm_lock_impl(+1); } - *(void **)m->_m_prev = m->_m_next; - if (m->_m_next) ((void **)m->_m_next)[-1] = m->_m_prev; + volatile void *prev = m->_m_prev; + volatile void *next = m->_m_next; + *(volatile void *volatile *)prev = next; + if (next != &self->robust_list.head) *(volatile void *volatile *) + ((char *)next - sizeof(void *)) = prev; } cont = a_swap(&m->_m_lock, (type & 8) ? 0x40000000 : 0); if (type != PTHREAD_MUTEX_NORMAL && !priv) { |