From 3b40a2f6b56d9c81b7673cc50121a56ebf7dc8bd Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Sat, 4 Mar 2017 18:55:19 +0900
Subject: Limit ecall() recursion levels; fix #3466

---
 src/vm.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src')

diff --git a/src/vm.c b/src/vm.c
index 251ee15bc..012499610 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -292,6 +292,9 @@ ecall(mrb_state *mrb, int i)
   ptrdiff_t nstk;
 
   if (i<0) return;
+  if (mrb->c->ci - mrb->c->cibase > MRB_FUNCALL_DEPTH_MAX) {
+    mrb_exc_raise(mrb, mrb_obj_value(mrb->stack_err));
+  }
   p = mrb->c->ensure[i];
   if (!p) return;
   if (mrb->c->ci->eidx > i)
-- 
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