https://git.ruby-lang.org/ruby.git/commit/?id=c1c5fd5a8d

From c1c5fd5a8dbfce64067961a4051646ed62a50f89 Mon Sep 17 00:00:00 2001
From: Maxime Chevalier-Boisvert <maxime.chevalierboisvert@s...>
Date: Wed, 10 Feb 2021 15:38:20 -0500
Subject: Fix REG_SP writeback bug in gen_exit

---
 ujit_codegen.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ujit_codegen.c b/ujit_codegen.c
index 9ca8216a2c..51ae1bc4ce 100644
--- a/ujit_codegen.c
+++ b/ujit_codegen.c
@@ -55,7 +55,7 @@ static void https://github.com/ruby/ruby/blob/trunk/ujit_codegen.c#L55
 ujit_gen_exit(jitstate_t* jit, ctx_t* ctx, codeblock_t* cb, VALUE* exit_pc)
 {
     // Write the adjusted SP back into the CFP
-    if (ctx->stack_size != 0)
+    if (ctx->sp_offset != 0)
     {
         x86opnd_t stack_pointer = ctx_sp_opnd(ctx, 0);
         lea(cb, REG_SP, stack_pointer);
-- 
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