On Wednesday, December 26, 2012 8:08:24 PM UTC+1, Jean-Pierre Flori wrote: > > > > On Wednesday, December 26, 2012 6:49:52 PM UTC+1, Jean-Pierre Flori wrote: >> >> The offending object seems to be a weakref which is not refcounted >> correctly. >> Not sure which yet. >> > Not sure why, but it might be the one initialized by the Expect class at > the line: > quit.expect_objects.append(weakref.ref(self)) > > If I add: > import gc > print gc.get_referrers(quit.expect_objects[-1]) > > I get: > [Mathematica, [<weakref at 0x21c07c0; to 'Mathematica' at 0x21bd490>]] > > Strange that Mathematica points to its weakref. > The second member is quit.expect_object I assume. > Really strange. If I del the weakref and then mathematica (from sage.interfaces.mathematica), everything is fine (until it fails later in InfinityRing). But if I try to del mathematica directly, then bang!
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