From 86d102350b4e68ae7ad4c1fef684f53a275790dc Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Tue, 20 Nov 2018 09:14:34 +0900
Subject: Restrict total recursion number of `ecall()`; fix #3789

---
 include/mruby.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'include')

diff --git a/include/mruby.h b/include/mruby.h
index 12df9cd5a..5ff7a1d7b 100644
--- a/include/mruby.h
+++ b/include/mruby.h
@@ -267,7 +267,8 @@ typedef struct mrb_state {
 #else
   mrb_atexit_func *atexit_stack;
 #endif
-  mrb_int atexit_stack_len;
+  uint16_t atexit_stack_len;
+  uint16_t ecall_nest;                    /* prevent infinite recursive ecall() */
 } mrb_state;
 
 /**
-- 
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