[issue1706039] Added clearerr() to clear EOF state

[Guilherme Polo]

Guilherme Polo <ggpolo at gmail.com> added the comment:

It isn't being careful when calling PyErr_SetFromErrno inside the
Py_UniversalNewlineFread function since this function is being called
all over fileobject after releasing the GIL.. so, isn't this just a
matter of adding pairs of PyGILState_Ensure/PyGILState_Release around
these calls to PyErr_SetFromErrno in this specific function ?

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nosy: +gpolo

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