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-rw-r--r--src/core/ngx_rwlock.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/core/ngx_rwlock.c b/src/core/ngx_rwlock.c
index 905de780a..0aed29af5 100644
--- a/src/core/ngx_rwlock.c
+++ b/src/core/ngx_rwlock.c
@@ -94,7 +94,7 @@ ngx_rwlock_unlock(ngx_atomic_t *lock)
readers = *lock;
if (readers == NGX_RWLOCK_WLOCK) {
- *lock = 0;
+ (void) ngx_atomic_cmp_set(lock, NGX_RWLOCK_WLOCK, 0);
return;
}