From a19a6edb7c464af9dd4303659ceabe2672882a6b Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Wed, 17 Dec 2014 08:06:44 +0900
Subject: mrb_str_new(mrb, "", len) creates an unmodifiable string object; ref
 #2674

---
 src/string.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/string.c')

diff --git a/src/string.c b/src/string.c
index 23cd76747..1c54ffa72 100644
--- a/src/string.c
+++ b/src/string.c
@@ -163,7 +163,7 @@ str_new(mrb_state *mrb, const char *p, size_t len)
 {
   struct RString *s;
 
-  if (mrb_ro_data_p(p)) {
+  if (p && mrb_ro_data_p(p)) {
     return str_new_static(mrb, p, len);
   }
   s = mrb_obj_alloc_string(mrb);
-- 
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