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-rw-r--r--src/core/ngx_atomic.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/core/ngx_atomic.h b/src/core/ngx_atomic.h
index 5f5add9df..bf771e95c 100644
--- a/src/core/ngx_atomic.h
+++ b/src/core/ngx_atomic.h
@@ -59,7 +59,7 @@ static ngx_inline uint32_t ngx_atomic_cmp_set(ngx_atomic_t *lock,
NGX_SMP_LOCK
" cmpxchgl %3, %1; "
- " setzb %%al; "
+ " setz %%al; "
" movzbl %%al, %0; "
: "=a" (res) : "m" (*lock), "a" (old), "q" (set));