[issue23571] Raise SystemError if a function returns a result with an exception set

[Roundup Robot]

Roundup Robot added the comment:

New changeset efb2c9ac2f88 by Victor Stinner in branch '3.4':
Issue #23571: Enhance Py_FatalError()
https://hg.python.org/cpython/rev/efb2c9ac2f88

New changeset 6303795f035a by Victor Stinner in branch 'default':
(Merge 3.4) Issue #23571: Enhance Py_FatalError()
https://hg.python.org/cpython/rev/6303795f035a

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