From b3f8f8a5b0baffec17b0a9e7ef2fbace30f71b64 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Tue, 21 Jan 2014 17:12:14 +0900
Subject: describe call stack overwritten problem of mrb_get_backtrace; close
 #1661

---
 src/backtrace.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/backtrace.c b/src/backtrace.c
index 8edc27776..a221d5e5c 100644
--- a/src/backtrace.c
+++ b/src/backtrace.c
@@ -129,6 +129,13 @@ mrb_output_backtrace(mrb_state *mrb, struct RObject *exc, output_stream_func fun
   }
 }
 
+/* mrb_print_backtrace/mrb_get_backtrace:
+
+   function to retrieve backtrace information from the exception.
+   note that if you call method after the exception, call stack will be
+   overwritten.  So invoke these functions just after detecting exceptions.
+*/   
+
 void
 mrb_print_backtrace(mrb_state *mrb)
 {
-- 
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