* struct.c (rb_struct_select): Struct#select should return

enumerator when no block given.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25243 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Tue Oct  6 18:56:09 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* struct.c (rb_struct_select): Struct#select should return
+	  enumerator when no block given.
+
 Tue Oct  6 06:26:00 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
 
 	* * ext/tk/lib/tk/canvas.rb: *** POTENTIALLY INCOMPATIBLE ***

struct.c

@@ -774,6 +774,7 @@ rb_struct_select(int argc, VALUE *argv, VALUE s)
     if (argc > 0) {
 	rb_raise(rb_eArgError, "wrong number of arguments (%d for 0)", argc);
     }
+    RETURN_ENUMERATOR(s, 0, 0);
     result = rb_ary_new();
     for (i = 0; i < RSTRUCT_LEN(s); i++) {
 	if (RTEST(rb_yield(RSTRUCT_PTR(s)[i]))) {