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gh-129346: Handle allocation errors for SQLite aggregate context #129347

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Merged
merged 3 commits into from
Jan 27, 2025
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gh-129346: Handle allocation errors for SQLite aggregate context #129347

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gh-129346: Assert SQLite aggregate context cannot be NULL in the step…
erlend-aasland Jan 27, 2025
14b45f7
Handle memory allocation errors
erlend-aasland Jan 27, 2025
095f626
NEWS
erlend-aasland Jan 27, 2025
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2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Library/2025-01-27-14-05-19.gh-issue-129346.gZRd3g.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
In :mod:`sqlite3`, handle out-of-memory when creating user-defined SQL
functions.
5 changes: 5 additions & 0 deletions Modules/_sqlite/connection.c
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Expand Up @@ -958,6 +958,11 @@ step_callback(sqlite3_context *context, int argc, sqlite3_value **params)
assert(ctx != NULL);

aggregate_instance = (PyObject**)sqlite3_aggregate_context(context, sizeof(PyObject*));
if (aggregate_instance == NULL) {
(void)PyErr_NoMemory();
set_sqlite_error(context, "unable to allocate SQLite aggregate context");
goto error;
}
Comment on lines +961 to +965
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If we had a way to hook into the SQLite memory allocator, we could simulate out-of-memory, but unfortunately the sqlite3 extension module does not support this (yet).

if (*aggregate_instance == NULL) {
*aggregate_instance = PyObject_CallNoArgs(ctx->callable);
if (!*aggregate_instance) {
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