[issue41396] pystate.c:_PyCrossInterpreterData_Release() does not clear py exception on error

[Irit Katriel]

Change by Irit Katriel :


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nosy: +eric.snow, vstinner

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[issue41396] pystate.c:_PyCrossInterpreterData_Release() does not clear py exception on error

[Tomasz Pytel]

New submission from Tomasz Pytel :

The call to _PyInterpreterState_LookUpID() may generate a Python exception but 
it is not explicitly cleared on error and no indicator is returned to signal 
failure. This can lead to a "a function returned a result with an error set" 
fatal error, and does in fact do so in a case I encountered in 
Modules/_xxsubinterpreters.c:channel_destroy().

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components: Interpreter Core
messages: 374270
nosy: Tomasz Pytel
priority: normal
severity: normal
status: open
title: pystate.c:_PyCrossInterpreterData_Release() does not clear py exception 
on error
type: behavior
versions: Python 3.8

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