From 24a24a41dd7e97bacb225e598b74580d351d825d Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Mon, 1 May 2017 14:30:33 +0900
Subject: Type check before `print_backtrace()`

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

(limited to 'src')

diff --git a/src/backtrace.c b/src/backtrace.c
index 2a180f928..b5f8e77c9 100644
--- a/src/backtrace.c
+++ b/src/backtrace.c
@@ -213,6 +213,7 @@ print_backtrace(mrb_state *mrb, mrb_value backtrace)
   int i, n;
   FILE *stream = stderr;
 
+  if (!mrb_array_p(backtrace)) return;
   fprintf(stream, "trace:\n");
 
   n = RARRAY_LEN(backtrace);
-- 
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