[pypy-dev] Tracked it a bit down Re: GC problems with PyObject

[Christian Tismer]

Christian Tismer wrote:
> Michael Hudson wrote:
> 
>> What doesn't work?  I changed NEED_OLD_EXTRA_REFS to False and the c
>> tests still run fine.

see test_genc:

# this test crashes after 30 runs on my XP machine
def test_refcount_pyobj():
     def prob_with_pyobj(a=int, b=int):
         return 2, 3, long(42)

     f = compile(prob_with_pyobj, [int, int])
     ret = f(2, 3)
     for i in xrange(1000):
         print i
         f(2, 3)

What happens is this:
the function itself seems to be fine.
But the generated wrapper function, which has to
convert from (int, int, obj) to (obj, obj, obj)
does not incref the long 42 before putting it into the
result tuple.

cheers - chris

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