From c2bfb4e93c674347b7eb09a30856e3d75f74cf4d Mon Sep 17 00:00:00 2001
From: shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 11 Sep 2018 09:48:58 +0000
Subject: add new instruction attribute called leaf

An instruction is leaf if it has no rb_funcall inside.  In order to
check this property, we introduce stack canary which is a random
number collected at runtime.  Stack top is always filled with this
number and checked for stack smashing operations, when VM_CHECK_MODE.
[GH-1947]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64677 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 variable.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'variable.c')

diff --git a/variable.c b/variable.c
index 32e71fccb4..1c23173d6c 100644
--- a/variable.c
+++ b/variable.c
@@ -867,6 +867,24 @@ rb_gvar_defined(struct rb_global_entry *entry)
     return Qtrue;
 }
 
+rb_gvar_getter_t *
+rb_gvar_getter_function_of(const struct rb_global_entry *entry)
+{
+    return entry->var->getter;
+}
+
+rb_gvar_setter_t *
+rb_gvar_setter_function_of(const struct rb_global_entry *entry)
+{
+    return entry->var->setter;
+}
+
+bool
+rb_gvar_is_traced(const struct rb_global_entry *entry)
+{
+    return !!entry->var->trace;
+}
+
 static enum rb_id_table_iterator_result
 gvar_i(ID key, VALUE val, void *a)
 {
-- 
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