nobu	2015-06-23 14:32:52 +0900 (Tue, 23 Jun 2015)

  New Revision: 51002

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=51002

  Log:
    error.c: ArgumentError if no receiver
    
    * error.c (name_err_receiver): raise ArgumentError if no receiver
      is available on this exception object.  [Feature #10881]

  Modified files:
    trunk/ChangeLog
    trunk/error.c
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 51001)
+++ ChangeLog	(revision 51002)
@@ -1,3 +1,8 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Tue Jun 23 14:32:42 2015  Nobuyoshi Nakada  <nobu@r...>
+
+	* error.c (name_err_receiver): raise ArgumentError if no receiver
+	  is available on this exception object.  [Feature #10881]
+
 Tue Jun 23 09:48:34 2015  Eric Wong  <e@8...>
 
 	* dir.c (check_dirname): avoid volatile, use return value
Index: error.c
===================================================================
--- error.c	(revision 51001)
+++ error.c	(revision 51002)
@@ -1264,7 +1264,10 @@ name_err_receiver(VALUE self) https://github.com/ruby/ruby/blob/trunk/error.c#L1264
 {
     VALUE *ptr, mesg = rb_attr_get(self, id_mesg);
 
-    TypedData_Get_Struct(mesg, VALUE, &name_err_mesg_data_type, ptr);
+    if (!rb_typeddata_is_kind_of(mesg, &name_err_mesg_data_type)) {
+	rb_raise(rb_eArgError, "no receiver is available");
+    }
+    ptr = DATA_PTR(mesg);
     return ptr[NAME_ERR_MESG__RECV];
 }
 

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