[Python-Dev] Preserving the blamelist (original) (raw)

Tim Peters tim.peters at gmail.com
Wed Apr 12 08:15:26 CEST 2006

[Neal Norwitz]

... I'm concerned about the negative ref leak in testcontextlib. I wonder if this was a result of PJE's fix for generators?

I don't know, but if you do

while 1: test_contextlib.test_main() gc.collect()

under a debug build it eventually (> 500 iterations) crashes with

Fatal Python error: deallocating None

That's a pretty good clue ;-) The

Py_XDECREF(gen->gi_frame);

in gen_dealloc() is on the call stack at the time, and cyclic gc is active.

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