From fe057faf1b995f65b0daca6f264cb6b81d2dcb71 Mon Sep 17 00:00:00 2001
From: Masaki Muranaka <monaka@monami-ya.jp>
Date: Wed, 13 Mar 2013 17:28:26 +0900
Subject: Add the type check in mrb_str_to_cstr().

---
 src/string.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/string.c b/src/string.c
index f5ac7b578..d34256e63 100644
--- a/src/string.c
+++ b/src/string.c
@@ -262,6 +262,10 @@ mrb_str_to_cstr(mrb_state *mrb, mrb_value str0)
 {
   mrb_value str;
 
+  if (!mrb_string_p(str0)) {
+      mrb_raise(mrb, E_TYPE_ERROR, "expected String");
+  }
+
   str = mrb_str_new(mrb, RSTRING_PTR(str0), RSTRING_LEN(str0));
   if (strlen(RSTRING_PTR(str)) != RSTRING_LEN(str)) {
     mrb_raise(mrb, E_ARGUMENT_ERROR, "string contains null byte");
-- 
cgit v1.2.3