[issue27558] SystemError inside multiprocessing.dummy Pool.map

[Xiang Zhang]

Xiang Zhang added the comment:

It seems the thread state is initialized in thread_PyThread_start_new_thread. It calls _PyThreadState_Prealloc which initialize exc_type to NULL.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27558>
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