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[3.11] gh-106033: Get rid of new occurrences of PyDict_GetItem and Py… (#106040)

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[3.11] gh-106033: Get rid of new occurrences of PyDict_GetItem and PyObject_HasAttr (GH-106034)

These functions are broken by design because they discard any exceptions raised
inside, including MemoryError and KeyboardInterrupt.  They should not be
used in new code..
(cherry picked from commit 1d33d53780)
This commit is contained in:
Serhiy Storchaka 2023-06-25 02:41:02 +03:00 • committed by GitHub
parent c69f29f879
commit dbe416b82b
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 30 additions and 32 deletions
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13
Modules/_hashopenssl.c
View file

@ -384,14 +384,15 @@ py_digest_by_digestmod(PyObject *module, PyObject *digestmod, enum Py_hash_type
} else {
_hashlibstate *state = get_hashlib_state(module);
// borrowed ref
name_obj = PyDict_GetItem(state->constructs, digestmod);
name_obj = PyDict_GetItemWithError(state->constructs, digestmod);
}
if (name_obj == NULL) {
_hashlibstate *state = get_hashlib_state(module);
PyErr_Clear();
PyErr_Format(
state->unsupported_digestmod_error,
"Unsupported digestmod %R", digestmod);
if (!PyErr_Occurred()) {
_hashlibstate *state = get_hashlib_state(module);
PyErr_Format(
state->unsupported_digestmod_error,
"Unsupported digestmod %R", digestmod);
}
return NULL;
}

37
Objects/exceptions.c
View file

@ -210,22 +210,21 @@ BaseException_add_note(PyObject *self, PyObject *note)
return NULL;
}
if (!PyObject_HasAttr(self, &_Py_ID(__notes__))) {
PyObject *new_notes = PyList_New(0);
if (new_notes == NULL) {
return NULL;
}
if (PyObject_SetAttr(self, &_Py_ID(__notes__), new_notes) < 0) {
Py_DECREF(new_notes);
return NULL;
}
Py_DECREF(new_notes);
}
PyObject *notes = PyObject_GetAttr(self, &_Py_ID(__notes__));
if (notes == NULL) {
PyObject *notes;
if (_PyObject_LookupAttr(self, &_Py_ID(__notes__), &notes) < 0) {
return NULL;
}
if (!PyList_Check(notes)) {
if (notes == NULL) {
notes = PyList_New(0);
if (notes == NULL) {
return NULL;
}
if (PyObject_SetAttr(self, &_Py_ID(__notes__), notes) < 0) {
Py_DECREF(notes);
return NULL;
}
}
else if (!PyList_Check(notes)) {
Py_DECREF(notes);
PyErr_SetString(PyExc_TypeError, "Cannot add note: __notes__ is not a list");
return NULL;
@ -943,11 +942,11 @@ exceptiongroup_subset(
PyException_SetContext(eg, PyException_GetContext(orig));
PyException_SetCause(eg, PyException_GetCause(orig));
if (PyObject_HasAttr(orig, &_Py_ID(__notes__))) {
PyObject *notes = PyObject_GetAttr(orig, &_Py_ID(__notes__));
if (notes == NULL) {
goto error;
}
PyObject *notes;
if (_PyObject_LookupAttr(orig, &_Py_ID(__notes__), &notes) < 0) {
goto error;
}
if (notes) {
if (PySequence_Check(notes)) {
/* Make a copy so the parts have independent notes lists. */
PyObject *notes_copy = PySequence_List(notes);

12
Python/pythonrun.c
View file

@ -1138,15 +1138,13 @@ print_exception_notes(struct exception_print_context *ctx, PyObject *value)
return 0;
}
if (!PyObject_HasAttr(value, &_Py_ID(__notes__))) {
return 0;
}
PyObject *notes = PyObject_GetAttr(value, &_Py_ID(__notes__));
if (notes == NULL) {
return -1;
PyObject *notes;
int res = _PyObject_LookupAttr(value, &_Py_ID(__notes__), &notes);
if (res <= 0) {
return res;
}
if (!PySequence_Check(notes)) {
int res = 0;
res = 0;
if (write_indented_margin(ctx, f) < 0) {
res = -1;
}