nobu	2019-02-07 16:39:47 +0900 (Thu, 07 Feb 2019)

  New Revision: 67018

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=67018

  Log:
    * string.c (chopped_length): early return for empty strings
    
    [Bug #11391]
    
    From: Franck Verrot <franck@v...>

  Modified files:
    trunk/string.c
Index: string.c
===================================================================
--- string.c	(revision 67017)
+++ string.c	(revision 67018)
@@ -8547,7 +8547,7 @@ chopped_length(VALUE str) https://github.com/ruby/ruby/blob/trunk/string.c#L8547
 
     beg = RSTRING_PTR(str);
     end = beg + RSTRING_LEN(str);
-    if (beg > end) return 0;
+    if (beg >= end) return 0;
     p = rb_enc_prev_char(beg, end, end, enc);
     if (!p) return 0;
     if (p > beg && rb_enc_ascget(p, end, 0, enc) == '\n') {

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