PT-2026-40744 · Crates.Io · Diesel
Publicado
2026-04-24
·
Atualizado
2026-04-24
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Diesel allows to register custom aggregate SQL functions for SQLite via the
SqliteAggregate interface.To store an instance of the custom aggregate processor Diesel relied on the
sqlite3 aggregate context function provided by sqlite. This function doesn't provide any guarantees about alignment of the returned allocation, which in turn can lead to problems if the type implementing requires a special alignment, e.g. via a custom #[align(x)] attribute on the type implementing this trait. This affects any user of SqliteAggregate that registers the custom aggregate function with an SQLite connection, while using a non-standard alignment on the type implementing this trait.Mitigation
The preferred mitigation to the outlined problem is to update to a Diesel version 2.3.8 or newer, which includes fixes for the problem.
Resolution
Diesel now allocates the corresponding memory on Rust side to get a correctly aligned allocation.
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Diesel