From 7ec1fc37f4c87c691555e76d51b6590761b3ec64 Mon Sep 17 00:00:00 2001
From: Koichi Sasada <ko1@atdot.net>
Date: Tue, 16 Nov 2021 18:14:50 +0900
Subject: add `VM_CALLCACHE_ON_STACK`

check if iseq refers to on stack CC (it shouldn't).
---
 vm_callinfo.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'vm_callinfo.h')

diff --git a/vm_callinfo.h b/vm_callinfo.h
index 91ed55bf5f..b3aafd6de1 100644
--- a/vm_callinfo.h
+++ b/vm_callinfo.h
@@ -290,6 +290,7 @@ struct rb_callcache {
 };
 
 #define VM_CALLCACHE_UNMARKABLE IMEMO_FL_USER0
+#define VM_CALLCACHE_ON_STACK   IMEMO_FL_USER1
 
 static inline const struct rb_callcache *
 vm_cc_new(VALUE klass,
@@ -305,7 +306,8 @@ vm_cc_new(VALUE klass,
     (struct rb_callcache) {                   \
         .flags = T_IMEMO |                    \
             (imemo_callcache << FL_USHIFT) |  \
-            VM_CALLCACHE_UNMARKABLE,          \
+            VM_CALLCACHE_UNMARKABLE |         \
+            VM_CALLCACHE_ON_STACK,            \
         .klass = clazz,                       \
         .cme_  = cme,                         \
         .call_ = call,                        \
-- 
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