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bpo-35476: clear error in _imp_create_dynamic_impl #14738

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isidentical wants to merge 1 commit into from
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bpo-35476: clear error in _imp_create_dynamic_impl #14738

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3 changes: 3 additions & 0 deletions 3 Python/import.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2249,6 +2249,9 @@ _imp_create_dynamic_impl(PyObject *module, PyObject *spec, PyObject *file)

mod = _PyImport_FindExtensionObject(name, path);
if (mod != NULL || PyErr_Occurred()) {
if (PyErr_Occurred()) {

@brettcannon brettcannon Jul 19, 2019

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To avoid the overhead of calling PyErr_Occurred(), could you store the result in a variable and check that?

PyErr_Clear();

@brettcannon brettcannon Jul 19, 2019

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I've started a discussion over on the issue where if I'm right and swallowing an exception is bad then this clearing of the exception should be removed.

}

@brettcannon brettcannon Jul 19, 2019

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This actually won't work because since you cleared out the error but are returning NULL you will trigger a failure in the interpreter for saying there's an exception when one isn't set.

Py_DECREF(name);
Py_DECREF(path);
Py_XINCREF(mod);
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