https://git.ruby-lang.org/ruby.git/commit/?id=c866d6563f

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


diff --git a/compile.c b/compile.c
index e102dc8..dbdb4b9 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 https://github.com/ruby/ruby/blob/trunk/compile.c#L6344
     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);
-- 
cgit v0.10.2


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