* eval.c (rb_call0): defer calling of rb_frame_self() until it

become really necessary.

* eval.c (rb_call): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@16408 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,10 @@
+Wed May 14 07:49:35 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* eval.c (rb_call0): defer calling of rb_frame_self() until it
+	  become really necessary.
+
+	* eval.c (rb_call): ditto.
+
 Wed May 14 00:55:56 2008  Yusuke Endoh  <mame@tsg.ne.jp>
 
 	* test/ruby/test_io_m17n.rb: remove a duplicative method.

eval.c

@@ -1412,7 +1412,10 @@ rb_call0(VALUE klass, VALUE recv, ID mid, int argc, const VALUE *argv, int scope
 		if (TYPE(defined_class) == T_ICLASS) {
 		    defined_class = RBASIC(defined_class)->klass;
 		}
-		
+
+		if (self == Qundef) {
+		    self = rb_frame_self();
+		}
 		if (!rb_obj_is_kind_of(self, rb_class_real(defined_class))) {
 		    return method_missing(recv, mid, argc, argv, NOEX_PROTECTED);
 		}
@@ -1450,7 +1453,7 @@ rb_call0(VALUE klass, VALUE recv, ID mid, int argc, const VALUE *argv, int scope
 static VALUE
 rb_call(VALUE klass, VALUE recv, ID mid, int argc, const VALUE *argv, int scope)
 {
-    return rb_call0(klass, recv, mid, argc, argv, scope, rb_frame_self());
+    return rb_call0(klass, recv, mid, argc, argv, scope, Qundef);
 }
 
 VALUE