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GH-101578: Normalize the current exception (GH-101607)

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* Make sure that the current exception is always normalized.

* Remove redundant type and traceback fields for the current exception.

* Add new API functions: PyErr_GetRaisedException, PyErr_SetRaisedException

* Add new API functions: PyException_GetArgs, PyException_SetArgs
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Mark Shannon 2023-02-08 09:31:12 +00:00 • committed by GitHub
parent 027adf42cd
commit feec49c407
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29 changed files with 477 additions and 172 deletions
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15
Parser/pegen.c
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@ -643,13 +643,10 @@ _PyPegen_number_token(Parser *p)
PyThreadState *tstate = _PyThreadState_GET();
// The only way a ValueError should happen in _this_ code is via
// PyLong_FromString hitting a length limit.
if (tstate->curexc_type == PyExc_ValueError &&
tstate->curexc_value != NULL) {
PyObject *type, *value, *tb;
// This acts as PyErr_Clear() as we're replacing curexc.
PyErr_Fetch(&type, &value, &tb);
Py_XDECREF(tb);
Py_DECREF(type);
if (tstate->current_exception != NULL &&
Py_TYPE(tstate->current_exception) == (PyTypeObject *)PyExc_ValueError
) {
PyObject *exc = PyErr_GetRaisedException();
/* Intentionally omitting columns to avoid a wall of 1000s of '^'s
* on the error message. Nobody is going to overlook their huge
* numeric literal once given the line. */
@ -659,8 +656,8 @@ _PyPegen_number_token(Parser *p)
t->end_lineno, -1 /* end_col_offset */,
"%S - Consider hexadecimal for huge integer literals "
"to avoid decimal conversion limits.",
value);
Py_DECREF(value);
exc);
Py_DECREF(exc);
}
return NULL;
}