[Python-checkins] python/dist/src/Objects object.c,2.183,2.184

[tim_one@users.sourceforge.net]

Update of /cvsroot/python/python/dist/src/Objects
In directory usw-pr-cvs1:/tmp/cvs-serv12066/python/Objects

Modified Files:
	object.c 
Log Message:
SF bug 578752: COUNT_ALLOCS vs heap types
Repair segfaults and infinite loops in COUNT_ALLOCS builds in the
presence of new-style (heap-allocated) classes/types.

Bugfix candidate.  I'll backport this to 2.2.  It's irrelevant in 2.1.


Index: object.c
===================================================================
RCS file: /cvsroot/python/python/dist/src/Objects/object.c,v
retrieving revision 2.183
retrieving revision 2.184
diff -C2 -d -r2.183 -r2.184
*** object.c	7 Jul 2002 19:59:50 -0000	2.183
--- object.c	8 Jul 2002 22:11:52 -0000	2.184
***************
*** 75,78 ****
--- 75,87 ----
  			Py_FatalError("XXX inc_count sanity check");
  		tp->tp_next = type_list;
+ 		/* Note that as of Python 2.2, heap-allocated type objects
+ 		 * can go away, but this code requires that they stay alive
+ 		 * until program exit.  That's why we're careful with
+ 		 * refcounts here.  type_list gets a new reference to tp,
+ 		 * while ownership of the reference type_list used to hold
+ 		 * (if any) was transferred to tp->tp_next in the line above.
+ 		 * tp is thus effectively immortal after this.
+ 		 */
+ 		Py_INCREF(tp);
  		type_list = tp;
  	}