[issue30473] defaultdict raises SystemError, __missing__ returned NULL in thread
Serhiy Storchaka
report at bugs.python.org
Thu May 25 13:57:08 EDT 2017
Serhiy Storchaka added the comment:
In 3.6 _PyStack_UnpackDict() returns just args if there are no keyword arguments. But if args is NULL, the result of _PyStack_UnpackDict() is treated as error.
Thank you for the reproducer Louie!
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assignee: -> haypo
components: +Interpreter Core
nosy: +serhiy.storchaka
priority: normal -> critical
stage: -> needs patch
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