From ff262f2133a5ffed2051e50a3fbcacf4c6920ecd Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Fri, 10 Mar 2017 12:37:19 +0900
Subject: Update ci->mid according to surrounding scope; fix #3490

---
 src/vm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/vm.c b/src/vm.c
index 2f999449d..37f62584b 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -569,6 +569,7 @@ eval_under(mrb_state *mrb, mrb_value self, mrb_value blk, struct RClass *c)
   p = mrb_proc_ptr(blk);
   ci->proc = p;
   ci->argc = 1;
+  ci->mid = ci[-1].mid;
   if (MRB_PROC_CFUNC_P(p)) {
     stack_extend(mrb, 3, 0);
     mrb->c->stack[0] = self;
-- 
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