ko1	2017-06-28 13:57:02 +0900 (Wed, 28 Jun 2017)

  New Revision: 59193

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=59193

  Log:
    fix to check thread type

  Modified files:
    trunk/vm_core.h
Index: vm_core.h
===================================================================
--- vm_core.h	(revision 59192)
+++ vm_core.h	(revision 59193)
@@ -675,8 +675,7 @@ extern const rb_data_type_t ruby_threadp https://github.com/ruby/ruby/blob/trunk/vm_core.h#L675
 static inline struct rb_thread_struct *
 rb_thread_ptr(VALUE thval)
 {
-    VM_ASSERT(rb_check_typeddata(obj, &ruby_threadptr_data_type) != NULL);
-    return (struct rb_thread_struct *)DATA_PTR(thval);
+    return (struct rb_thread_struct *)rb_check_typeddata(thval, &ruby_threadptr_data_type);
 }
 
 enum rb_thread_status {

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