nobu	2014-12-10 16:48:56 +0900 (Wed, 10 Dec 2014)

  New Revision: 48761

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=48761

  Log:
    string.c: term fill
    
    * string.c (rb_str_chop_bang): fill wchar terminator.

  Modified files:
    trunk/string.c
    trunk/test/-ext-/string/test_cstr.rb
Index: string.c
===================================================================
--- string.c	(revision 48760)
+++ string.c	(revision 48761)
@@ -7024,7 +7024,7 @@ rb_str_chop_bang(VALUE str) https://github.com/ruby/ruby/blob/trunk/string.c#L7024
 	long len;
 	len = chopped_length(str);
 	STR_SET_LEN(str, len);
-	RSTRING_PTR(str)[len] = '\0';
+	TERM_FILL(&RSTRING_PTR(str)[len], TERM_LEN(str));
 	if (ENC_CODERANGE(str) != ENC_CODERANGE_7BIT) {
 	    ENC_CODERANGE_CLEAR(str);
 	}
Index: test/-ext-/string/test_cstr.rb
===================================================================
--- test/-ext-/string/test_cstr.rb	(revision 48760)
+++ test/-ext-/string/test_cstr.rb	(revision 48761)
@@ -52,6 +52,10 @@ class Test_StringCStr < Test::Unit::Test https://github.com/ruby/ruby/blob/trunk/test/-ext-/string/test_cstr.rb#L52
     assert_wchars_term_char("a\n") {|s| s.chop!}
   end
 
+  def test_wchar_chomp!
+    assert_wchars_term_char("a\n") {|s| s.chomp!}
+  end
+
   def assert_wchars_term_char(str)
     result = {}
     WCHARS.map do |enc|

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