nobu	2012-06-27 20:36:15 +0900 (Wed, 27 Jun 2012)

  New Revision: 36235

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=36235

  Log:
    fix null m_tbl
    
    * ext/objspace/objspace.c (memsize_of): m_tbl in prepended
      class/module is NULL.

  Modified files:
    trunk/ext/objspace/objspace.c

Index: ext/objspace/objspace.c
===================================================================
--- ext/objspace/objspace.c	(revision 36234)
+++ ext/objspace/objspace.c	(revision 36235)
@@ -60,7 +60,9 @@
 	break;
       case T_MODULE:
       case T_CLASS:
-	size += st_memsize(RCLASS_M_TBL(obj));
+	if (RCLASS_M_TBL(obj)) {
+	    size += st_memsize(RCLASS_M_TBL(obj));
+	}
 	if (RCLASS_IV_TBL(obj)) {
 	    size += st_memsize(RCLASS_IV_TBL(obj));
 	}

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