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-rw-r--r--innobase/sync/sync0sync.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/innobase/sync/sync0sync.c b/innobase/sync/sync0sync.c
index 5c42876a7bb..e711acbf84e 100644
--- a/innobase/sync/sync0sync.c
+++ b/innobase/sync/sync0sync.c
@@ -251,7 +251,9 @@ mutex_free(
/*=======*/
mutex_t* mutex) /* in: mutex */
{
+#ifdef UNIV_DEBUG
ut_a(mutex_validate(mutex));
+#endif /* UNIV_DEBUG */
ut_a(mutex_get_lock_word(mutex) == 0);
ut_a(mutex_get_waiters(mutex) == 0);