May 7, 2020 · Apr 23, 2020 · Apr 27, 2020 · Apr 27, 2020 · Apr 27, 2020 · Apr 27, 2020
diff --git a/Modules/_xxsubinterpretersmodule.c b/Modules/_xxsubinterpretersmodule.c
    Py_XDECREF(msgobj);
 }

 static void
 _pyexc_set_context(PyObject *exc, PyObject *context)
 {
    PyObject *contexttype = (PyObject *)Py_TYPE(context);

    // PyErr_Restore() steals references.
    PyObject *exctype = (PyObject *)Py_TYPE(exc);
    Py_INCREF(exctype);
    Py_INCREF(exc);
    PyObject *tb = PyException_GetTraceback(exc);
    PyErr_Restore(exctype, exc, tb);  // This is needed for chaining.

    Py_INCREF(contexttype);  // _PyErr_ChainExceptions() steals a reference.
    // This sets exc.__context__ to "context".
    _PyErr_ChainExceptions(contexttype, context,
                           PyException_GetTraceback(context));

    PyErr_Clear();  // We had only set it temporarily for chaining.
 }

 static PyObject *
 _sharedexception_resolve(_sharedexception *sharedexc, PyObject *wrapperclass)
 {
    // Set __cause__, is possible.
    PyObject *cause = _sharedexception_get_cause(sharedexc);
    if (cause != NULL) {
        // Set __context__ automatically.
        _pyexc_set_context(exc, cause);
        // Set __context__.
        Py_INCREF(cause);  // PyException_SetContext() steals a reference.
        PyException_SetContext(exc, cause);

        // Set __cause__.
        Py_INCREF(cause);  // PyException_SetCause() steals a reference.
Original file line number	Diff line number	Diff line change
Expand Up		@@ -1135,26 +1135,6 @@ _sharedexception_extract(_sharedexception she, PyObject exc)
		Py_XDECREF(msgobj);
		}

		static void
		_pyexc_set_context(PyObject exc, PyObject context)
		{
		PyObject contexttype = (PyObject )Py_TYPE(context);

		// PyErr_Restore() steals references.
		PyObject exctype = (PyObject )Py_TYPE(exc);
		Py_INCREF(exctype);
		Py_INCREF(exc);
		PyObject *tb = PyException_GetTraceback(exc);
		PyErr_Restore(exctype, exc, tb); // This is needed for chaining.

		Py_INCREF(contexttype); // _PyErr_ChainExceptions() steals a reference.
		// This sets exc.__context__ to "context".
		_PyErr_ChainExceptions(contexttype, context,
		PyException_GetTraceback(context));

		PyErr_Clear(); // We had only set it temporarily for chaining.
		}

		static PyObject *
		_sharedexception_resolve(_sharedexception sharedexc, PyObject wrapperclass)
		{
Expand All		@@ -1167,8 +1147,9 @@ _sharedexception_resolve(_sharedexception sharedexc, PyObject wrapperclass)
		// Set __cause__, is possible.
		PyObject *cause = _sharedexception_get_cause(sharedexc);
		if (cause != NULL) {
		// Set __context__ automatically.
		_pyexc_set_context(exc, cause);
		// Set __context__.
		Py_INCREF(cause); // PyException_SetContext() steals a reference.
		PyException_SetContext(exc, cause);

		// Set __cause__.
		Py_INCREF(cause); // PyException_SetCause() steals a reference.
Expand Down