The author discusses the deep connection between memory safety and object pools, arguing that use-after-free bugs in pooled allocations still cause logical errors even though they avoid the physical type confusion that enables arbitrary code execution. The post frames object pools as untracked tagged unions, raising questions about whether generational indexing in pools makes them fundamentally easier to reason about than union-based type systems.
Background
The article is a follow-up discussion to a previous post titled "Memory Safety's Hardest Problem" on the matklad blog, where the author (a Rust developer and former systems programmer) explores the boundary between memory safety and general program correctness.
- Source
- Lobsters
- Published
- Sep 3, 2026 at 02:19 AM
- Score
- 7.0 / 10