From 79a85b18cc6ad27f1a70a703270680dc30a1263e Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 30 May 2016 07:20:28 +0000
Subject: string.c: return reallocated pointer

* string.c (str_fill_term): return new pointer reallocated by
  filling terminator.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55212 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/-ext-/string/test_cstr.rb | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'test')

diff --git a/test/-ext-/string/test_cstr.rb b/test/-ext-/string/test_cstr.rb
index 35b5fe5931..2083016db2 100644
--- a/test/-ext-/string/test_cstr.rb
+++ b/test/-ext-/string/test_cstr.rb
@@ -18,6 +18,12 @@ class Test_StringCStr < Test::Unit::TestCase
     assert_equal(0, s.cstr_term, Bug4319)
   end
 
+  def test_shared
+    s = Bug::String.new("abcdef")*5
+    s = s.unterminated_substring(0, 29)
+    assert_equal(0, s.cstr_term, Bug4319)
+  end
+
   def test_frozen
     s0 = Bug::String.new("abcdefgh"*8)
 
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