nagachika	2018-03-22 00:04:00 +0900 (Thu, 22 Mar 2018)

  New Revision: 62875

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=62875

  Log:
    merge revision(s) 62040: [Backport #14388]
    
    string.c: clear substring code range
    
    * string.c (str_substr): substring of broken code range string may
      be valid or broken.  patch by tommy (Masahiro Tomita) at
      [ruby-dev:50430] [Bug #14388].

  Modified directories:
    branches/ruby_2_4/
  Modified files:
    branches/ruby_2_4/string.c
    branches/ruby_2_4/test/ruby/test_string.rb
    branches/ruby_2_4/version.h
Index: ruby_2_4/test/ruby/test_string.rb
===================================================================
--- ruby_2_4/test/ruby/test_string.rb	(revision 62874)
+++ ruby_2_4/test/ruby/test_string.rb	(revision 62875)
@@ -2569,6 +2569,12 @@ CODE https://github.com/ruby/ruby/blob/trunk/ruby_2_4/test/ruby/test_string.rb#L2569
     assert_equal("\u3042", "\u3042\u3043".chr)
     assert_equal('', ''.chr)
   end
+
+  def test_substr_code_range
+    data = "\xff" + "a"*200
+    assert_not_predicate(data, :valid_encoding?)
+    assert_predicate(data[100..-1], :valid_encoding?)
+  end
 end
 
 class TestString2 < TestString
Index: ruby_2_4/version.h
===================================================================
--- ruby_2_4/version.h	(revision 62874)
+++ ruby_2_4/version.h	(revision 62875)
@@ -1,6 +1,6 @@ https://github.com/ruby/ruby/blob/trunk/ruby_2_4/version.h#L1
 #define RUBY_VERSION "2.4.4"
 #define RUBY_RELEASE_DATE "2018-03-21"
-#define RUBY_PATCHLEVEL 278
+#define RUBY_PATCHLEVEL 279
 
 #define RUBY_RELEASE_YEAR 2018
 #define RUBY_RELEASE_MONTH 3
Index: ruby_2_4/string.c
===================================================================
--- ruby_2_4/string.c	(revision 62874)
+++ ruby_2_4/string.c	(revision 62875)
@@ -2451,6 +2451,7 @@ str_substr(VALUE str, long beg, long len https://github.com/ruby/ruby/blob/trunk/ruby_2_4/string.c#L2451
 	str2 = str_new_shared(rb_obj_class(str2), str2);
 	RSTRING(str2)->as.heap.ptr += ofs;
 	RSTRING(str2)->as.heap.len = len;
+	ENC_CODERANGE_CLEAR(str2);
     }
     else {
 	if (!len && !empty) return Qnil;
Index: ruby_2_4
===================================================================
--- ruby_2_4	(revision 62874)
+++ ruby_2_4	(revision 62875)

Property changes on: ruby_2_4
___________________________________________________________________
Modified: svn:mergeinfo
## -0,0 +0,1 ##
   Merged /trunk:r62040

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