From b200c7475ae65abbbea09fcf91c38a1c8971da1c Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Thu, 22 Jun 2017 02:05:14 +0900
Subject: No need to mark stacks of terminated fibers; fix #3720

---
 src/gc.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src')

diff --git a/src/gc.c b/src/gc.c
index da2fe3800..134b818ee 100644
--- a/src/gc.c
+++ b/src/gc.c
@@ -579,6 +579,8 @@ mark_context(mrb_state *mrb, struct mrb_context *c)
   int i;
   mrb_callinfo *ci;
 
+  if (c->status == MRB_FIBER_TERMINATED) return;
+
   /* mark VM stack */
   mark_context_stack(mrb, c);
 
-- 
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