From ba11a74745e10fac88a74c2da2e0032ccf254265 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8D=9C=E9=83=A8=E6=98=8C=E5=B9=B3?=
 <shyouhei@ruby-lang.org>
Date: Mon, 16 Dec 2019 17:38:41 +0900
Subject: ensure cc->def == cc->me->def

The equation shall hold for every call cache.  However prior to this
changeset cc->me could be updated without also updating cc->def.  Let's
make it sure by introducing new macro named CC_SET_ME which sets cc->me
and cc->def at once.
---
 vm_insnhelper.h | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'vm_insnhelper.h')

diff --git a/vm_insnhelper.h b/vm_insnhelper.h
index 99555fd4ed..c96522fc98 100644
--- a/vm_insnhelper.h
+++ b/vm_insnhelper.h
@@ -124,6 +124,14 @@ enum vm_regan_acttype {
     if (LIKELY(enabled)) ((cc)->call = (func)); \
 } while (0)
 
+#define CC_SET_ME(cc, newme) do { \
+    CALL_CACHE ccx = (cc); \
+    const rb_callable_method_entry_t *mex = (newme); \
+    const rb_method_definition_t *defx = mex ? mex->def : NULL; \
+    ccx->me = mex; \
+    ccx->def = defx; \
+} while (0)
+
 #define GET_BLOCK_HANDLER() (GET_LEP()[VM_ENV_DATA_INDEX_SPECVAL])
 
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