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bpo-42064: Offset arguments for PyObject_Vectorcall in the _sqlite module #27931

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Merged
encukou merged 3 commits into from
Aug 31, 2021
Merged

bpo-42064: Offset arguments for PyObject_Vectorcall in the _sqlite module #27931

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dad0c57
Offset arguments for PyObject_Vectorcall in the _sqlite module
encukou Aug 24, 2021
2cbaf4d
Note about borrowed ref
encukou Aug 31, 2021
3a2e3fa
Avoid long lines
encukou Aug 31, 2021
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19 changes: 11 additions & 8 deletions 19 Modules/_sqlite/connection.c
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Original file line number Diff line number Diff line change
Expand Up @@ -59,19 +59,21 @@ static void _pysqlite_drop_unused_cursor_references(pysqlite_Connection* self);
static PyObject *
new_statement_cache(pysqlite_Connection *self, int maxsize)
{
PyObject *args[] = { PyLong_FromLong(maxsize), };
if (args[0] == NULL) {
PyObject *args[] = { NULL, PyLong_FromLong(maxsize), };
if (args[1] == NULL) {
return NULL;
}
PyObject *lru_cache = self->state->lru_cache;
PyObject *inner = PyObject_Vectorcall(lru_cache, args, 1, NULL);
Py_DECREF(args[0]);
size_t nargsf = 1 | PY_VECTORCALL_ARGUMENTS_OFFSET;
PyObject *inner = PyObject_Vectorcall(lru_cache, args + 1, nargsf, NULL);
Py_DECREF(args[1]);
if (inner == NULL) {
return NULL;
}

args[0] = (PyObject *)self; // Borrowed ref.
PyObject *res = PyObject_Vectorcall(inner, args, 1, NULL);
args[1] = (PyObject *)self; // Borrowed ref.
nargsf = 1 | PY_VECTORCALL_ARGUMENTS_OFFSET;
PyObject *res = PyObject_Vectorcall(inner, args + 1, nargsf, NULL);
Py_DECREF(inner);
return res;
}
Expand Down Expand Up @@ -1482,8 +1484,9 @@ pysqlite_collation_callback(

callback_context *ctx = (callback_context *)context;
assert(ctx != NULL);
PyObject *args[] = { string1, string2 }; // Borrowed refs.
retval = PyObject_Vectorcall(ctx->callable, args, 2, NULL);
PyObject *args[] = { NULL, string1, string2 }; // Borrowed refs.
size_t nargsf = 2 | PY_VECTORCALL_ARGUMENTS_OFFSET;
retval = PyObject_Vectorcall(ctx->callable, args + 1, nargsf, NULL);
if (retval == NULL) {
/* execution failed */
goto finally;
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5 changes: 3 additions & 2 deletions 5 Modules/_sqlite/cursor.c
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Expand Up @@ -465,9 +465,10 @@ begin_transaction(pysqlite_Connection *self)
static PyObject *
get_statement_from_cache(pysqlite_Cursor *self, PyObject *operation)
{
PyObject *args[] = { operation, };
PyObject *args[] = { NULL, operation, }; // Borrowed ref.
PyObject *cache = self->connection->statement_cache;
return PyObject_Vectorcall(cache, args, 1, NULL);
size_t nargsf = 1 | PY_VECTORCALL_ARGUMENTS_OFFSET;
return PyObject_Vectorcall(cache, args + 1, nargsf, NULL);
}

static PyObject *
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