* string.c (tr_trans): should not turn on modify flag if no

modification happens.  [ruby-dev:34631]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@16349 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -6,6 +6,9 @@ Sat May 10 22:14:03 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
 	* string.c (tr_trans): should check src size, not str size.
 	  [ruby-dev:34637]
 
+	* string.c (tr_trans): should not turn on modify flag if no
+	  modification happens.  [ruby-dev:34631]
+
 Sat May 10 18:11:18 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* string.c (rb_str_each_line): zero length record separator should

string.c

@@ -4331,7 +4331,6 @@ tr_trans(VALUE str, VALUE src, VALUE repl, int sflag)
 	    }
 	    else {
 		save = -1;
-		modify = 1;
 		c = c0;
 	    }
 	    while (t - buf + tlen >= max) {