matz	2010-05-31 02:20:15 +0900 (Mon, 31 May 2010)

  New Revision: 28101

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=28101

  Log:
    * insns.def (defined): respond_to_missing? may not be available
      (for BasicObject instances).

  Modified files:
    trunk/ChangeLog
    trunk/insns.def

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 28100)
+++ ChangeLog	(revision 28101)
@@ -1,3 +1,8 @@
+Mon May 31 02:17:54 2010  Yukihiro Matsumoto  <matz@r...>
+
+	* insns.def (defined): respond_to_missing? may not be available
+	  (for BasicObject instances).
+
 Mon May 31 01:43:42 2010  Marc-Andre Lafortune  <ruby-core@m...>
 
 	* lib/delegate: Delegator: combine (public|protected) methods with
Index: insns.def
===================================================================
--- insns.def	(revision 28100)
+++ insns.def	(revision 28101)
@@ -799,8 +799,15 @@
 		}
 	    }
 	}
-	if (RTEST(rb_funcall(v, rb_intern("respond_to_missing?"), 2, obj, Qfalse)))
-	    expr_type = "method";
+	{
+	    VALUE args[2];
+	    VALUE r;
+
+	    args[0] = obj; args[1] = Qfalse;
+	    r = rb_check_funcall(v, rb_intern("respond_to_missing?"), 2, args);
+	    if (r != Qundef && RTEST(r)) 
+		expr_type = "method";
+	}
 	break;
       }
       case DEFINED_YIELD:

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