Message 191879 - Python tracker
I'm unsure as to how to get a stack trace from Visual Studio, but I can assure you that the changes introduced by the change aff41a6421c2 *is* the cause of the failure in test_marshal. In a nutshell, the overflow happens in a recursion on the marhsal.c:r_object() function for the test_marshal test of BugsTestCase.test_loads_recursion().