From c866d6563f2295d12225addc2e4f8edb677c4e2d Mon Sep 17 00:00:00 2001
From: wanabe <s.wanabe@gmail.com>
Date: Sat, 8 Aug 2020 22:34:08 +0900
Subject: [PATCH] Adjust sp for `case ... in v1 ... in v2 end`

---
 compile.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/compile.c b/compile.c
index e102dc8daf..dbdb4b9127 100644
--- a/compile.c
+++ b/compile.c
@@ -6344,6 +6344,9 @@ compile_case3(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_no
     while (type == NODE_IN) {
         LABEL *l1;
 
+        if (branch_id) {
+                ADD_INSN(body_seq, line, putnil);
+        }
         l1 = NEW_LABEL(line);
         ADD_LABEL(body_seq, l1);
         ADD_INSN(body_seq, line, pop);