https://git.ruby-lang.org/ruby.git/commit/?id=1016cff4ff

From 1016cff4ff43d8977bda01cc59867e75ad238836 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8D=9C=E9=83=A8=E6=98=8C=E5=B9=B3?=
 <shyouhei@r...>
Date: Mon, 8 Jun 2020 14:26:49 +0900
Subject: rb_eql_opt,rb_equal_opt: purge stale cc

When on USE_EMBED_CI, cd is stored statically.  Previous use could cache
stale cd->cc, which could have already been GCed.  Need flush them.

diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index 11e03f8..65bebd3 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -1799,15 +1799,14 @@ rb_equal_opt(VALUE obj1, VALUE obj2) https://github.com/ruby/ruby/blob/trunk/vm_insnhelper.c#L1799
 #if USE_EMBED_CI
     static struct rb_call_data cd = {
         .ci = vm_ci_new_id(idEq, 0, 1, 0),
-        .cc = &vm_empty_cc,
     };
 #else
     struct rb_call_data cd = {
         .ci = &VM_CI_ON_STACK(idEq, 0, 1, 0),
-        .cc = &vm_empty_cc,
     };
 #endif
 
+    cd.cc = &vm_empty_cc;
     return opt_equality(NULL, obj1, obj2, &cd);
 }
 
@@ -1819,15 +1818,14 @@ rb_eql_opt(VALUE obj1, VALUE obj2) https://github.com/ruby/ruby/blob/trunk/vm_insnhelper.c#L1818
 #if USE_EMBED_CI
     static struct rb_call_data cd = {
         .ci = vm_ci_new_id(idEqlP, 0, 1, 0),
-        .cc = &vm_empty_cc,
     };
 #else
     struct rb_call_data cd = {
         .ci = &VM_CI_ON_STACK(idEqlP, 0, 1, 0),
-        .cc = &vm_empty_cc,
     };
 #endif
 
+    cd.cc = &vm_empty_cc;
     return opt_equality(NULL, obj1, obj2, &cd);
 }
 #endif
-- 
cgit v0.10.2


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