https://git.ruby-lang.org/ruby.git/commit/?id=74ac12830b

From 74ac12830b2a623aeadd0bd5036e651114d0da7f Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Wed, 3 Jun 2020 08:21:22 +0900
Subject: Evaluate macros argument just once


diff --git a/method.h b/method.h
index 3aa4deb..cd59963 100644
--- a/method.h
+++ b/method.h
@@ -70,11 +70,11 @@ typedef struct rb_callable_method_entry_struct { /* same fields with rb_method_e https://github.com/ruby/ruby/blob/trunk/method.h#L70
 #define METHOD_ENTRY_VISI(me)  (rb_method_visibility_t)(((me)->flags & (IMEMO_FL_USER0 | IMEMO_FL_USER1)) >> (IMEMO_FL_USHIFT+0))
 #define METHOD_ENTRY_BASIC(me) (int)                   (((me)->flags & (IMEMO_FL_USER2                 )) >> (IMEMO_FL_USHIFT+2))
 #define METHOD_ENTRY_COMPLEMENTED(me)        ((me)->flags & IMEMO_FL_USER3)
-#define METHOD_ENTRY_COMPLEMENTED_SET(me)    ((me)->flags = (me)->flags | IMEMO_FL_USER3)
+#define METHOD_ENTRY_COMPLEMENTED_SET(me)    ((me)->flags |= IMEMO_FL_USER3)
 #define METHOD_ENTRY_CACHED(me)              ((me)->flags & IMEMO_FL_USER4)
-#define METHOD_ENTRY_CACHED_SET(me)          ((me)->flags = (me)->flags | IMEMO_FL_USER4)
+#define METHOD_ENTRY_CACHED_SET(me)          ((me)->flags |= IMEMO_FL_USER4)
 #define METHOD_ENTRY_INVALIDATED(me)         ((me)->flags & IMEMO_FL_USER5)
-#define METHOD_ENTRY_INVALIDATED_SET(me)     ((me)->flags = (me)->flags | IMEMO_FL_USER5)
+#define METHOD_ENTRY_INVALIDATED_SET(me)     ((me)->flags |= IMEMO_FL_USER5)
 
 static inline void
 METHOD_ENTRY_VISI_SET(rb_method_entry_t *me, rb_method_visibility_t visi)
-- 
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