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Diffstat (limited to 'src/thread/pthread_mutex_unlock.c')
-rw-r--r--src/thread/pthread_mutex_unlock.c7
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) {