https://git.ruby-lang.org/ruby.git/commit/?id=6b1d2de6cc

From 6b1d2de6cc2e85fda7885fe77dbd7c99c4eb1ef2 Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@g...>
Date: Thu, 10 Dec 2020 14:40:22 -0800
Subject: Unfortunately getinstancevariable was still not leaf

https://github.com/ruby/ruby/runs/1533401436

diff --git a/insns.def b/insns.def
index 2bdb2d5..f912b51 100644
--- a/insns.def
+++ b/insns.def
@@ -210,6 +210,8 @@ getinstancevariable https://github.com/ruby/ruby/blob/trunk/insns.def#L210
 (ID id, IVC ic)
 ()
 (VALUE val)
+/* Ractor crashes when it accesses class/module-level instances variables. */
+// attr bool leaf = false; /* has IVAR_ACCESSOR_SHOULD_BE_MAIN_RACTOR() */
 {
     val = vm_getinstancevariable(GET_ISEQ(), GET_SELF(), id, ic);
 }
-- 
cgit v0.10.2


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