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-rw-r--r--Zend/zend_compile.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/Zend/zend_compile.h b/Zend/zend_compile.h
index 0ca688c5ff..cfefe9ce31 100644
--- a/Zend/zend_compile.h
+++ b/Zend/zend_compile.h
@@ -919,9 +919,9 @@ void zend_assert_valid_class_name(const zend_string *const_name);
#define ZEND_FREE_ON_RETURN (1<<0)
#define ZEND_FREE_SWITCH (1<<1)
-#define ZEND_SEND_BY_VAL 0
-#define ZEND_SEND_BY_REF 1
-#define ZEND_SEND_PREFER_REF 2
+#define ZEND_SEND_BY_VAL 0u
+#define ZEND_SEND_BY_REF 1u
+#define ZEND_SEND_PREFER_REF 2u
#define ZEND_DIM_IS 1